node-26

Directory mounted in the container wasn't removed along the container
so we ended up with a lot of empty directories on the server.

.drone.yml

@@ -1,25 +0,0 @@
-kind: pipeline
-type: docker
-name: testing
-
-steps:
-- name: test
-  image: golang
-  environment:
-    SNAPSHOTS_S3_ENDPOINT: minio:9000
-    TEST_S3_ENDPOINT: minio:9000
-  commands:
-    - go mod tidy
-    - make test
-
-services:
-- name: minio
-  image: minio/minio:latest
-  environment:
-    MINIO_ROOT_USER: test
-    MINIO_ROOT_PASSWORD: testtest
-  command:
-  - server
-  - /data
-  - --console-address
-  - :9001

.gitea/workflows/release.yml

@@ -0,0 +1,33 @@
+name: Release
+
+on:
+  release:
+    types: [published]
+  # push:
+  #   branches: [main]
+  workflow_dispatch: {}
+  
+jobs:
+  deploy-production:
+    runs-on: [amd64, prod]
+    env:
+      NODES: node-22.rosti.cz node-23.rosti.cz node-24.rosti.cz node-25.rosti.cz node-26.rosti.cz
+    steps:
+    - uses: actions/checkout@v4
+    - name: deploy
+      run: |
+        echo "Building for Debian 12 .."
+        docker run --rm --privileged -ti -v `pwd`:/srv golang:1.21-bookworm /bin/sh -c "cd /srv && go build"
+
+        for NODE in $NODES; do
+          echo "\033[0;32mDeploying $NODE\033[0m"
+          echo "\033[1;33m.. scanning SSH keys\033[0m"
+          ssh -o "StrictHostKeyChecking=no" root@$NODE echo "Setting up key"
+          echo "\033[1;33m.. copying the binary\033[0m"
+          scp node-api root@$NODE:/usr/local/bin/node-api_
+          echo "\033[1;33m.. replacing the binary\033[0m"
+          ssh root@$NODE mv /usr/local/bin/node-api_ /usr/local/bin/node-api
+          echo "\033[1;33m.. restarting service\033[0m"
+          ssh root@$NODE systemctl restart node-api
+        done
+

.gitea/workflows/unittests.yml

@@ -0,0 +1,62 @@
+name: Unittests
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch: {}
+  
+jobs:
+  unittests:
+    runs-on: [amd64, moon]
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-go@v3
+      with:
+        go-version: 1.21
+    - name: start minio
+      run: |
+        docker run -d --rm --name nodeapi_minio -p 9000:9000 -p 9001:9001 -e MINIO_ROOT_USER=test -e MINIO_ROOT_PASSWORD=testtest minio/minio:latest server /data --console-address :9001
+    - name: deps
+      run: apt update && apt install -y tar zstd
+    - name: Test
+      run: |
+        make test
+    - name: stop minio
+      if: always()
+      run: |
+        docker stop nodeapi_minio
+    # TODO: probably not supported by Gitea workflows yet
+    # services:
+    #   minio:
+    #     image: minio/minio:latest
+    #     env:
+    #       MINIO_ROOT_USER: test
+    #       MINIO_ROOT_PASSWORD: testtest
+    #     ports:
+    #     - 9001:9001
+    #     options: server /data --console-address :9001
+  deploy-dev:
+    runs-on: [amd64, moon]
+    env:
+      NODES: "192.168.1.33"
+    steps:
+    - uses: actions/checkout@v4
+    - name: deploy
+      run: |
+        # echo LS1
+        # ls
+        docker run --rm --privileged -ti -v `pwd`:/srv golang:1.20-buster /bin/sh -c "cd /srv && go build"
+        # docker run --rm --privileged -ti -v `pwd`:/srv golang:1.20-buster /bin/sh -c "cd /srv && echo LS2 && ls"
+
+        for NODE in $NODES; do
+          echo "\033[0;32mDeploying $NODE\033[0m"
+          echo "\033[1;33m.. scanning SSH keys\033[0m"
+          ssh -o "StrictHostKeyChecking=no" root@$NODE echo "Setting up key"
+          echo "\033[1;33m.. copying the binary\033[0m"
+          scp node-api root@$NODE:/usr/local/bin/node-api_
+          echo "\033[1;33m.. replacing the binary\033[0m"
+          ssh root@$NODE mv /usr/local/bin/node-api_ /usr/local/bin/node-api
+          echo "\033[1;33m.. restarting service\033[0m"
+          ssh root@$NODE systemctl restart node-api
+        done
+

Makefile

@@ -1,7 +1,9 @@
 .PHONY: test
 test:
-	go test -v apps/*.go
-	go test -v apps/drivers/*.go
+	go test -race -v apps/*.go
+	go test -race -v apps/drivers/*.go
+	go test -race -v detector/*.go
+	# env DOCKER_SOCKET="unix:///var/run/docker.sock" go test -v containers/*.go # Doesn't work in Drone right now
 
 build:
 	#podman run --rm --privileged -ti -v ${shell pwd}:/srv docker.io/library/golang:1.14-stretch /bin/sh -c "cd /srv && go build"
@@ -18,4 +20,9 @@ minio:
 		-p 9001:9001 \
 		-e MINIO_ROOT_USER=test \
 		-e MINIO_ROOT_PASSWORD=testtest \
-		minio/minio server /data --console-address ":9001"
+		docker.io/minio/minio:latest server /data --console-address ":9001"
+
+.PHONY: clean
+clean:
+	-podman stop rosti-snapshots
+	-podman rm rosti-snapshots

README.md

@@ -4,3 +4,16 @@
 
 Node API is an microservice that runs on node servers. It provides interface between
 Docker and the admin site. 
+
+
+## Test
+
+On Fedora run podman API:
+
+    Root: sudo systemctl enable --now podman.socket
+    Rootless: podman system service -t 0 --log-level=debug
+              set -x DOCKER_SOCKET unix:/run/user/1000/podman/podman.sock
+              # or
+              export DOCKER_SOCKET=unix:/run/user/1000/podman/podman.sock
+
+

apps/drivers/fs.go

@@ -1,6 +1,7 @@
 package drivers
 
 import (
+	"errors"
 	"io"
 	"io/ioutil"
 	"os"
@@ -83,3 +84,8 @@ func (f FSDriver) List(prefix string) ([]string, error) {
 func (f FSDriver) Delete(key string) error {
 	return os.Remove(path.Join(f.Path, key))
 }
+
+// GetDownloadLink is not implemented in this driver
+func (f FSDriver) GetDownloadLink(key string) (string, error) {
+	return "", errors.New("not implemented")
+}

apps/drivers/s3.go

@@ -5,11 +5,14 @@ import (
 	"context"
 	"fmt"
 	"io/ioutil"
+	"time"
 
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
 )
 
+const s3LinkExpiration = 72 // in hours
+
 // S3Driver provides basic interface for S3 storage compatible with Driver interface
 type S3Driver struct {
 	// S3 storage related things
@@ -155,3 +158,22 @@ func (s S3Driver) Delete(key string) error {
 
 	return nil
 }
+
+// GetDownloadLink returns URL of object with given key. That URL can be used to download the object.
+func (s S3Driver) GetDownloadLink(key string) (string, error) {
+	client, err := s.getMinioClient()
+	if err != nil {
+		return "", fmt.Errorf("getting minio client error: %v", err)
+	}
+
+	expiry := time.Second * s3LinkExpiration * 60 * 60 // 1 day.
+	presignedURL, err := client.PresignedPutObject(context.Background(), s.Bucket, key, expiry)
+	if err != nil {
+		return "", fmt.Errorf("generating presign URL error: %v", err)
+	}
+
+	if s.S3SSL {
+		return fmt.Sprintf("https://%s%s?%s", s.S3Endpoint, presignedURL.Path, presignedURL.RawQuery), nil
+	}
+	return fmt.Sprintf("http://%s%s?%s", s.S3Endpoint, presignedURL.Path, presignedURL.RawQuery), nil
+}

apps/drivers/s3_test.go

@@ -77,3 +77,12 @@ func TestS3Delete(t *testing.T) {
 	assert.Nil(t, err)
 	assert.NotContains(t, keys, "testkey")
 }
+
+func TestGetDownloadLink(t *testing.T) {
+	err := testS3Driver.Write("testkey", []byte(testContent))
+	assert.Nil(t, err)
+
+	link, err := testS3Driver.GetDownloadLink("testkey")
+	assert.Nil(t, err)
+	assert.Contains(t, link, "/testsnapshots/testkey?X-Amz-Algorithm=AWS4-HMAC-SHA256")
+}

apps/drivers/types.go

@@ -19,4 +19,7 @@ type DriverInterface interface {
 
 	// Delete deletes one object
 	Delete(key string) error
+
+	// GetDownloadLink returns URL of object with given key. That URL can be used to download the object.
+	GetDownloadLink(key string) (string, error)
 }

apps/main.go

@@ -3,9 +3,11 @@ package apps
 import (
 	"github.com/jinzhu/gorm"
 	_ "github.com/jinzhu/gorm/dialects/sqlite"
+	"github.com/rosti-cz/node-api/detector"
 )
 
 // AppsProcessor encapsulates functions for apps manipulation
+// This handles only the database part but not containers
 type AppsProcessor struct {
 	DB *gorm.DB
 }
@@ -16,19 +18,19 @@ func (a *AppsProcessor) Init() {
 }
 
 // Get returns one app
-func (a *AppsProcessor) Get(name string) (*App, error) {
+func (a *AppsProcessor) Get(name string) (App, error) {
 	var app App
 
 	err := a.DB.Preload("Labels").Where("name = ?", name).First(&app).Error
 	if err != nil {
-		return nil, err
+		return app, err
 	}
 
-	return &app, nil
+	return app, nil
 }
 
 // List returns all apps located on this node
-func (a *AppsProcessor) List() (*Apps, error) {
+func (a *AppsProcessor) List() (Apps, error) {
 	var apps Apps
 
 	err := a.DB.Preload("Labels").Find(&apps).Error
@@ -36,7 +38,7 @@ func (a *AppsProcessor) List() (*Apps, error) {
 		return nil, err
 	}
 
-	return &apps, nil
+	return apps, nil
 }
 
 // New creates new record about application in the database
@@ -65,7 +67,7 @@ func (a *AppsProcessor) New(name string, SSHPort int, HTTPPort int, image string
 }
 
 // Update changes value about app in the database
-func (a *AppsProcessor) Update(name string, SSHPort int, HTTPPort int, image string, CPU int, memory int) (*App, error) {
+func (a *AppsProcessor) Update(name string, SSHPort int, HTTPPort int, image string, CPU int, memory int, env map[string]string) (*App, error) {
 	var app App
 
 	err := a.DB.Where("name = ?", name).First(&app).Error
@@ -96,6 +98,10 @@ func (a *AppsProcessor) Update(name string, SSHPort int, HTTPPort int, image str
 		app.HTTPPort = HTTPPort
 	}
 
+	if len(env) != 0 {
+		app.SetEnv(env)
+	}
+
 	validationErrors := app.Validate()
 	if len(validationErrors) != 0 {
 		return &app, ValidationError{
@@ -109,21 +115,25 @@ func (a *AppsProcessor) Update(name string, SSHPort int, HTTPPort int, image str
 }
 
 // UpdateResources updates various metrics saved in the database
-func (a *AppsProcessor) UpdateResources(name string, state string, CPUUsage float64, memory int, diskUsageBytes int, diskUsageInodes int) error {
+func (a *AppsProcessor) UpdateResources(name string, state string, OOMKilled bool, CPUUsage float64, memory int, diskUsageBytes int, diskUsageInodes int, flags detector.Flags, isPasswordSet bool) error {
 	err := a.DB.Model(&App{}).Where("name = ?", name).Updates(App{
 		State:           state,
+		OOMKilled:       OOMKilled,
 		CPUUsage:        CPUUsage,
 		MemoryUsage:     memory,
 		DiskUsageBytes:  diskUsageBytes,
 		DiskUsageInodes: diskUsageInodes,
+		Flags:           flags.String(),
+		IsPasswordSet:   isPasswordSet,
 	}).Error
 	return err
 }
 
 // UpdateState sets container's state
-func (a *AppsProcessor) UpdateState(name string, state string) error {
+func (a *AppsProcessor) UpdateState(name string, state string, OOMKilled bool) error {
 	err := a.DB.Model(&App{}).Where("name = ?", name).Updates(App{
-		State: state,
+		State:     state,
+		OOMKilled: OOMKilled,
 	}).Error
 	return err
 }
@@ -178,5 +188,5 @@ func (a *AppsProcessor) RemoveLabel(appName string, label string) error {
 		return err
 	}
 
-	return a.DB.Where("label = ? AND app_id = ?", label, app.ID).Delete(&Label{}).Error
+	return a.DB.Where("value = ? AND app_id = ?", label, app.ID).Delete(&Label{}).Error
 }

apps/main_test.go

@@ -0,0 +1,194 @@
+package apps
+
+import (
+	"log"
+	"testing"
+
+	"github.com/jinzhu/gorm"
+	"github.com/rosti-cz/node-api/detector"
+	"github.com/stretchr/testify/assert"
+
+	// This is line from GORM documentation that imports database dialect
+	_ "github.com/jinzhu/gorm/dialects/sqlite"
+)
+
+const testDBPath = "file::memory:?cache=shared"
+
+func testDB() *gorm.DB {
+	db, err := gorm.Open("sqlite3", testDBPath)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	return db
+}
+
+func TestAppsProcessorGet(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("testapp_1234", 1000, 1001, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	app, err := processor.Get("testapp_1234")
+	assert.Nil(t, err)
+	assert.Greater(t, int(app.ID), 0)
+}
+
+func TestAppsProcessorList(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("testapp_2234", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	apps, err := processor.List()
+	assert.Nil(t, err)
+	assert.Equal(t, "testapp_1234", apps[0].Name)
+}
+
+func TestAppsProcessorNew(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("testapp_1234", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+}
+
+func TestAppsProcessorUpdate(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("updateapp_1224", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	env := make(map[string]string)
+	env["TEST"] = "test"
+
+	_, err = processor.Update("updateapp_1224", 1052, 1053, "testimage2", 4, 512, env)
+	assert.Nil(t, err)
+
+	app, err := processor.Get("updateapp_1224")
+	assert.Nil(t, err)
+
+	assert.Equal(t, 1052, app.SSHPort)
+	assert.Equal(t, 1053, app.HTTPPort)
+	assert.Equal(t, "testimage2", app.Image)
+	assert.Equal(t, 4, app.CPU)
+	assert.Equal(t, 512, app.Memory)
+}
+
+func TestAppsProcessorUpdateResources(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("updateresources_1224", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	err = processor.UpdateResources("updateresources_1224", "running", true, 1000, 256, 100, 200, detector.Flags{"test"}, true)
+	assert.Nil(t, err)
+
+	app, err := processor.Get("updateresources_1224")
+	assert.Nil(t, err)
+
+	assert.Equal(t, "running", app.State)
+	assert.Equal(t, true, app.OOMKilled)
+	assert.Equal(t, float64(1000), app.CPUUsage)
+	assert.Equal(t, 256, app.MemoryUsage)
+	assert.Equal(t, 100, app.DiskUsageBytes)
+	assert.Equal(t, 200, app.DiskUsageInodes)
+	assert.Equal(t, true, app.IsPasswordSet)
+	assert.Contains(t, app.Flags, "test")
+}
+
+func TestAppsProcessorUpdateState(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("update_1224", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	err = processor.UpdateState("update_1224", "no-container", false)
+	assert.Nil(t, err)
+
+	app, err := processor.Get("update_1224")
+	assert.Nil(t, err)
+
+	assert.Equal(t, "no-container", app.State)
+}
+
+func TestAppsProcessorAddLabel(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("label_1224", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	err = processor.AddLabel("label_1224", "testlabel")
+	assert.Nil(t, err)
+
+	app, err := processor.Get("label_1224")
+	assert.Nil(t, err)
+
+	assert.Equal(t, "testlabel", app.Labels[0].Value)
+}
+
+func TestAppsProcessorRemoveLabel(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("label_1223", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	err = processor.AddLabel("label_1223", "testlabel")
+	assert.Nil(t, err)
+
+	app, err := processor.Get("label_1223")
+	assert.Nil(t, err)
+
+	assert.Equal(t, "testlabel", app.Labels[0].Value)
+
+	err = processor.RemoveLabel("label_1223", "testlabel")
+	assert.Nil(t, err)
+
+	app, err = processor.Get("label_1223")
+	assert.Nil(t, err)
+
+	assert.Equal(t, 0, len(app.Labels))
+}
+
+func TestAppsProcessorDelete(t *testing.T) {
+	processor := AppsProcessor{
+		DB: testDB(),
+	}
+	processor.Init()
+
+	err := processor.New("testapp_5234", 1002, 1003, "testimage", 2, 256)
+	assert.Nil(t, err)
+
+	app, err := processor.Get("testapp_5234")
+	assert.Nil(t, err)
+	assert.Equal(t, 256, app.Memory)
+
+	err = processor.Delete("testapp_5234")
+	assert.Nil(t, err)
+
+	_, err = processor.Get("testapp_5234")
+	assert.Error(t, err, "record not found")
+}

apps/snapshots.go

@@ -1,29 +1,33 @@
 package apps
 
 import (
-	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"log"
 	"os"
+	"os/exec"
 	"path"
 	"strings"
 	"time"
 
-	"github.com/mholt/archiver/v3"
 	"github.com/rosti-cz/node-api/apps/drivers"
+	uuid "github.com/satori/go.uuid"
 )
 
 const bucketName = "snapshots"
 const dateFormat = "20060102_150405"
 const keySplitCharacter = ":"
+const metadataPrefix = "_metadata"
+const metadataKeyTemplate = metadataPrefix + "/%s"
+const tarBin = "/bin/tar"
 
 // Snapshot contains metadata about a single snapshot
 type Snapshot struct {
-	AppName   string
-	TimeStamp int64
-	Labels    []string
+	UUID      string   `json:"uuid"`
+	AppName   string   `json:"app_name"`
+	TimeStamp int64    `json:"ts"`
+	Labels    []string `json:"labels"`
 }
 
 // SnapshotIndexLine is struct holding information about a single snapshot
@@ -34,31 +38,15 @@ func (s *Snapshot) ToString() string {
 }
 
 // KeyName returns keyname used to store the snapshot in the storage
-func (s *Snapshot) KeyName() string {
-	metadata := base64.StdEncoding.EncodeToString([]byte(s.ToString()))
-	// TODO: this can't be bigger than 1kB
-	return fmt.Sprintf("%s%s%d%s%s", s.AppName, keySplitCharacter, s.TimeStamp, keySplitCharacter, metadata)
-}
-
-// DecodeKeyName returns snapshot structure containing all metadata about a single snapshot
-func DecodeKeyName(key string) (Snapshot, error) {
-	parts := strings.Split(key, keySplitCharacter)
-	if len(parts) != 3 {
-		return Snapshot{}, errors.New("key name in incorrect format")
+func (s *Snapshot) KeyName(indexLabel string) string {
+	labelValue := "-"
+	for _, label := range s.Labels {
+		if strings.HasPrefix(label, indexLabel+":") {
+			labelValue = label[len(indexLabel)+1:]
+		}
 	}
 
-	_metadata, err := base64.StdEncoding.DecodeString(parts[2])
-	if len(parts) != 3 {
-		return Snapshot{}, fmt.Errorf("base64 decoding error: %v", err)
-	}
-
-	snapshot := Snapshot{}
-	err = json.Unmarshal(_metadata, &snapshot)
-	if err != nil {
-		return snapshot, fmt.Errorf("metadata unmarshal error: %v", err)
-	}
-
-	return snapshot, nil
+	return fmt.Sprintf("%s%s%s%s%s%s%d", s.AppName, keySplitCharacter, s.UUID, keySplitCharacter, labelValue, keySplitCharacter, s.TimeStamp)
 }
 
 type Snapshots []Snapshot
@@ -66,47 +54,104 @@ type Snapshots []Snapshot
 // SnapshotProcessor encapsulates everything realted to snapshots. Snapshot is an archive of app's
 // directory content. It's stored in S3.
 // The biggest problem in the implementation is speed of looking for snapshots by labels.
+// So we can setup one label that can be used as index and it will speed up filtering a little bit in
+// certain situations - all snapshot of one owner for example.
 // This is distributed interface for the snapshot storage and any node can handle the request message
-// so we don't have any locking mechanism here and we cannot created index of snapshots without
+// so we don't have any locking mechanism here and we cannot created a single index of snapshots without
 // significant time spend on it. Let's deal with it later. I think we are fine for first 10k snapshots.
 type SnapshotProcessor struct {
 	AppsPath        string // Where apps are stored
 	TmpSnapshotPath string // where temporary location for snapshots is
+	IndexLabel      string // Label that will be used as index to make listing faster
 
 	Driver drivers.DriverInterface
 }
 
-// CreateSnapshot creates an archive of existing application and stores it in S3 storage
-// Returns key under which is the snapshot stored and/or error if there is any.
-// Metadata about the snapshot are encoded in the third part of the keyname.
-// The keyname cannot be bigger than 1 kB.
-func (s *SnapshotProcessor) CreateSnapshot(appName string, labels []string) (string, error) {
-	// Create an archive
-	archive := archiver.Zip{
-		CompressionLevel:       6,
-		MkdirAll:               true,
-		SelectiveCompression:   true,
-		ContinueOnError:        false,
-		OverwriteExisting:      false,
-		ImplicitTopLevelFolder: false,
+// saveMetadata saves metadata of single snapshot into the metadata storage
+func (s *SnapshotProcessor) saveMetadata(snapshot Snapshot) error {
+	body, err := json.Marshal(snapshot)
+	if err != nil {
+		return fmt.Errorf("marshal snapshot into JSON error: %v", err)
 	}
 
+	err = s.Driver.Write(fmt.Sprintf(metadataKeyTemplate, snapshot.UUID), body)
+	if err != nil {
+		return fmt.Errorf("copying metadata into S3 error: %v", err)
+	}
+
+	return nil
+}
+
+// loadMetadata returns metadata for given snapshot's UUID
+func (s *SnapshotProcessor) loadMetadata(snapshotUUID string) (Snapshot, error) {
+	snapshot := Snapshot{}
+
+	body, err := s.Driver.Read(fmt.Sprintf(metadataKeyTemplate, snapshotUUID))
+	if err != nil {
+		return snapshot, fmt.Errorf("reading metadata from S3 error: %v", err)
+	}
+
+	err = json.Unmarshal(body, &snapshot)
+	if err != nil {
+		return snapshot, fmt.Errorf("decoding metadata from JSON error: %v", err)
+	}
+
+	return snapshot, nil
+}
+
+// deleteMetadata deletes metadata object
+func (s *SnapshotProcessor) deleteMetadata(snapshotUUID string) error {
+	err := s.Driver.Delete(fmt.Sprintf(metadataKeyTemplate, snapshotUUID))
+	if err != nil {
+		return fmt.Errorf("delete metadata from S3 error: %v", err)
+	}
+
+	return nil
+}
+
+// metadataForSnapshotKey returns metadata for snapshot key
+func (s *SnapshotProcessor) metadataForSnapshotKey(snapshotKey string) (Snapshot, error) {
+	parts := strings.Split(snapshotKey, keySplitCharacter)
+	if len(parts) != 4 {
+		return Snapshot{}, errors.New("wrong snapshot key format")
+	}
+
+	snapshot, err := s.loadMetadata(parts[1])
+	return snapshot, err
+}
+
+// CreateSnapshot creates an archive of existing application and stores it in S3 storage
+// Returns key under which is the snapshot stored and/or error if there is any.
+// Metadata about the snapshot are stored in extra object under metadata/ prefix.
+func (s *SnapshotProcessor) CreateSnapshot(appName string, labels []string) (string, error) {
 	snapshot := Snapshot{
+		UUID:      uuid.NewV4().String(),
 		AppName:   appName,
 		TimeStamp: time.Now().Unix(),
 		Labels:    labels,
 	}
 
-	tmpSnapshotArchivePath := path.Join(s.TmpSnapshotPath, snapshot.KeyName()+".zip")
+	tmpSnapshotArchivePath := path.Join(s.TmpSnapshotPath, snapshot.KeyName(s.IndexLabel)+".tar.zst")
 
 	err := os.Chdir(path.Join(s.AppsPath, appName))
 	if err != nil {
-		return snapshot.KeyName(), fmt.Errorf("change working directory error: %v", err)
+		return snapshot.KeyName(s.IndexLabel), fmt.Errorf("change working directory error: %v", err)
 	}
 
-	err = archive.Archive([]string{"./"}, tmpSnapshotArchivePath)
+	err = exec.Command(tarBin, "-acf", tmpSnapshotArchivePath, "./").Run()
 	if err != nil {
-		return snapshot.KeyName(), fmt.Errorf("compression error: %v", err)
+		return snapshot.KeyName(s.IndexLabel), fmt.Errorf("compression error: %v", err)
+	}
+
+	info, err := os.Stat(tmpSnapshotArchivePath)
+	if err != nil {
+		return snapshot.KeyName(s.IndexLabel), fmt.Errorf("temporary file stat error: %v", err)
+	}
+	snapshot.Labels = append(snapshot.Labels, fmt.Sprintf("size:%d", info.Size()))
+
+	err = s.saveMetadata(snapshot)
+	if err != nil {
+		return snapshot.KeyName(s.IndexLabel), fmt.Errorf("saving metadata error: %v", err)
 	}
 
 	// Clean after myself
@@ -118,19 +163,19 @@ func (s *SnapshotProcessor) CreateSnapshot(appName string, labels []string) (str
 	}()
 
 	// Pipe it into the storage
-	err = s.Driver.Create(snapshot.KeyName(), tmpSnapshotArchivePath)
+	err = s.Driver.Create(snapshot.KeyName(s.IndexLabel), tmpSnapshotArchivePath)
 	if err != nil {
-		return snapshot.KeyName(), fmt.Errorf("copying snapshot into S3 error: %v", err)
+		return snapshot.KeyName(s.IndexLabel), fmt.Errorf("copying snapshot into S3 error: %v", err)
 	}
 
-	return snapshot.KeyName(), nil
+	return snapshot.KeyName(s.IndexLabel), nil
 }
 
 // RestoreSnapshot restores snapshot into an existing application
 // If you need a new app from existing snapshot just create it.
-// This restored only content of the disk, doesn't create the container.
+// This restores only content on the disk, doesn't create the container.
 func (s *SnapshotProcessor) RestoreSnapshot(key string, newAppName string) error {
-	tmpSnapshotArchivePath := path.Join(s.TmpSnapshotPath, key+".zip")
+	tmpSnapshotArchivePath := path.Join(s.TmpSnapshotPath, key+".tar.zst")
 
 	err := os.MkdirAll(path.Join(s.AppsPath, newAppName), 0755)
 	if err != nil {
@@ -142,21 +187,12 @@ func (s *SnapshotProcessor) RestoreSnapshot(key string, newAppName string) error
 		return fmt.Errorf("creating destination path error: %v", err)
 	}
 
-	s.Driver.Get(key, tmpSnapshotArchivePath)
+	err = s.Driver.Get(key, tmpSnapshotArchivePath)
 	if err != nil {
 		return fmt.Errorf("getting the archive from S3 error: %v", err)
 	}
 
-	archive := archiver.Zip{
-		CompressionLevel:       6,
-		MkdirAll:               true,
-		SelectiveCompression:   true,
-		ContinueOnError:        false,
-		OverwriteExisting:      false,
-		ImplicitTopLevelFolder: false,
-	}
-
-	err = archive.Unarchive(tmpSnapshotArchivePath, "./")
+	err = exec.Command(tarBin, "-axf", tmpSnapshotArchivePath).Run()
 	if err != nil {
 		return fmt.Errorf("unarchiving error: %v", err)
 	}
@@ -166,6 +202,12 @@ func (s *SnapshotProcessor) RestoreSnapshot(key string, newAppName string) error
 		return fmt.Errorf("removing the archive error: %v", err)
 	}
 
+	// remove .chowned file to tell the container to setup ownership of the files again
+	err = os.Remove("./.chowned")
+	if err != nil && !strings.Contains(err.Error(), "no such file or directory") {
+		return fmt.Errorf("removing  error: %v", err)
+	}
+
 	return nil
 }
 
@@ -179,8 +221,12 @@ func (s *SnapshotProcessor) ListAppSnapshots(appName string) ([]Snapshot, error)
 	}
 
 	for _, key := range keys {
+		if key == metadataPrefix+"/" {
+			continue
+		}
+
 		if strings.HasPrefix(key, appName+keySplitCharacter) {
-			snapshot, err := DecodeKeyName(key)
+			snapshot, err := s.metadataForSnapshotKey(key)
 			if err != nil {
 				return snapshots, err
 			}
@@ -202,9 +248,13 @@ func (s *SnapshotProcessor) ListAppsSnapshots(appNames []string) ([]Snapshot, er
 	}
 
 	for _, key := range keys {
+		if key == metadataPrefix+"/" {
+			continue
+		}
+
 		for _, appName := range appNames {
 			if strings.HasPrefix(key, appName+keySplitCharacter) {
-				snapshot, err := DecodeKeyName(key)
+				snapshot, err := s.metadataForSnapshotKey(key)
 				if err != nil {
 					return snapshots, err
 				}
@@ -217,9 +267,9 @@ func (s *SnapshotProcessor) ListAppsSnapshots(appNames []string) ([]Snapshot, er
 	return snapshots, nil
 }
 
-// ListAppsSnapshotsByLabels returns list of snapshots with given label
+// ListAppsSnapshotsByLabel returns list of snapshots with given label
 // TODO: this will be ok for now but probably little slow when users start using it more
-func (s *SnapshotProcessor) ListAppsSnapshotsByLabels(desiredLabel string) ([]Snapshot, error) {
+func (s *SnapshotProcessor) ListAppsSnapshotsByLabel(labelValue string) ([]Snapshot, error) {
 	snapshots := []Snapshot{}
 
 	keys, err := s.Driver.List("")
@@ -228,13 +278,20 @@ func (s *SnapshotProcessor) ListAppsSnapshotsByLabels(desiredLabel string) ([]Sn
 	}
 
 	for _, key := range keys {
-		snapshot, err := DecodeKeyName(key)
-		if err != nil {
+		if key == metadataPrefix+"/" {
+			continue
+		}
+
+		snapshot, err := s.metadataForSnapshotKey(key)
+		if err != nil && strings.Contains(err.Error(), "wrong snapshot key format") {
+			log.Printf("WARNING: Snapshot storage: invalid key found (%s)", key)
+			continue
+		} else if err != nil {
 			return snapshots, err
 		}
 
 		for _, label := range snapshot.Labels {
-			if label == desiredLabel {
+			if label == fmt.Sprintf("%s:%s", s.IndexLabel, labelValue) {
 				snapshots = append(snapshots, snapshot)
 			}
 		}
@@ -243,6 +300,28 @@ func (s *SnapshotProcessor) ListAppsSnapshotsByLabels(desiredLabel string) ([]Sn
 	return snapshots, nil
 }
 
+// GetSnapshot returns a single snapshot's metadata for given key.
+func (s *SnapshotProcessor) GetSnapshot(key string) (Snapshot, error) {
+	snapshot := Snapshot{}
+
+	snapshot, err := s.metadataForSnapshotKey(key)
+	if err != nil {
+		return snapshot, err
+	}
+
+	return snapshot, nil
+}
+
+// GetDownloadLink returns an URL for given snapshot
+func (s *SnapshotProcessor) GetDownloadLink(key string) (string, error) {
+	link, err := s.Driver.GetDownloadLink(key)
+	if err != nil {
+		return link, err
+	}
+
+	return link, nil
+}
+
 // DeleteSnapshot delete's one snapshot
 func (s *SnapshotProcessor) DeleteSnapshot(key string) error {
 	err := s.Driver.Delete(key)
@@ -261,7 +340,7 @@ func (s *SnapshotProcessor) DeleteAppSnapshots(appName string) error {
 	}
 
 	for _, snapshot := range snapshots {
-		err = s.DeleteSnapshot(snapshot.KeyName())
+		err = s.DeleteSnapshot(snapshot.KeyName(s.IndexLabel))
 		if err != nil {
 			return fmt.Errorf("removing snapshots error: %v", err)
 		}

apps/snapshots_test.go

@@ -47,6 +47,7 @@ func TestMain(m *testing.M) {
 	snapshotProcessor = &SnapshotProcessor{
 		AppsPath:        path.Join(initialPwd, "tmp/apps"),
 		TmpSnapshotPath: path.Join(initialPwd, "tmp/snapshots"),
+		IndexLabel:      "testlabel",
 
 		Driver: drivers.S3Driver{
 			S3AccessKey: "test",
@@ -76,14 +77,18 @@ func TestMain(m *testing.M) {
 
 func TestSnapshot(t *testing.T) {
 	snapshot := Snapshot{
+		UUID:      "ABCDEF",
 		AppName:   "app_0102",
 		TimeStamp: 1634510035,
 		Labels:    []string{"userid:1"},
 	}
 
-	assert.Equal(t, "app_0102:1634510035:eyJBcHBOYW1lIjoiYXBwXzAxMDIiLCJUaW1lU3RhbXAiOjE2MzQ1MTAwMzUsIkxhYmVscyI6WyJ1c2VyaWQ6MSJdfQ==", snapshot.KeyName())
+	assert.Equal(t, "app_0102:ABCDEF:1:1634510035", snapshot.KeyName("userid"))
 
-	snapshot2, err := DecodeKeyName("app_0102:1634510035:eyJBcHBOYW1lIjoiYXBwXzAxMDIiLCJUaW1lU3RhbXAiOjE2MzQ1MTAwMzUsIkxhYmVscyI6WyJ1c2VyaWQ6MSJdfQ==")
+	err := snapshotProcessor.saveMetadata(snapshot)
+	assert.Nil(t, err)
+
+	snapshot2, err := snapshotProcessor.metadataForSnapshotKey("app_0102:ABCDEF:1:1634510035")
 	assert.Nil(t, err)
 	assert.Equal(t, "app_0102", snapshot2.AppName)
 	assert.Equal(t, int64(1634510035), snapshot2.TimeStamp)
@@ -153,3 +158,37 @@ func TestCreateRestoreListSnapshot(t *testing.T) {
 	assert.Equal(t, os.IsNotExist(err), false)
 
 }
+
+func TestGetSnapshot(t *testing.T) {
+	snapshot, err := snapshotProcessor.GetSnapshot("app_0102:ABCDEF:1:1634510035")
+	assert.Nil(t, err)
+	assert.Equal(t, "app_0102", snapshot.AppName)
+}
+
+func TestListAppsSnapshotsByLabel(t *testing.T) {
+	appName := "app_0102"
+
+	// Create an app structure
+	err := os.MkdirAll(path.Join(snapshotProcessor.AppsPath, appName), 0755)
+	if err != nil {
+		fmt.Println(err.Error())
+		os.Exit(1)
+	}
+
+	_, err = exec.Command("bash", "-c", "echo content > "+path.Join(snapshotProcessor.AppsPath, appName)+"/a_file.txt").CombinedOutput()
+	if err != nil {
+		fmt.Println(err.Error())
+		os.Exit(1)
+	}
+
+	// Create an snapshot
+	snapshotName, err := snapshotProcessor.CreateSnapshot(appName, []string{"app:test2", "almost_no_content", "testlabel:abcde"})
+	assert.Nil(t, err)
+	assert.Equal(t, strings.HasPrefix(snapshotName, appName+":"), true)
+
+	snapshots, err := snapshotProcessor.ListAppsSnapshotsByLabel("abcde")
+	assert.Nil(t, err)
+	assert.True(t, len(snapshots) > 0)
+
+	assert.Equal(t, appName, snapshots[0].AppName)
+}

apps/types.go

@@ -5,8 +5,8 @@ import (
 	"strings"
 	"time"
 
-	// This is line from GORM documentation that imports database dialect
-	_ "github.com/jinzhu/gorm/dialects/sqlite"
+	"github.com/rosti-cz/node-api/detector"
+	"github.com/rosti-cz/node-api/jsonmap"
 )
 
 // ValidationError is error that holds multiple validation error messages
@@ -31,11 +31,14 @@ type Label struct {
 
 // AppState contains info about runnint application, it's not saved in the database
 type AppState struct {
-	State           string  `json:"state"`
-	CPUUsage        float64 `json:"cpu_usage"`    // in percents
-	MemoryUsage     int     `json:"memory_usage"` // in MB
-	DiskUsageBytes  int     `json:"disk_usage_bytes"`
-	DiskUsageInodes int     `json:"disk_usage_inodes"`
+	State           string         `json:"state"`
+	OOMKilled       bool           `json:"oom_killed"`
+	CPUUsage        float64        `json:"cpu_usage"`    // in percents
+	MemoryUsage     int            `json:"memory_usage"` // in MB
+	DiskUsageBytes  int            `json:"disk_usage_bytes"`
+	DiskUsageInodes int            `json:"disk_usage_inodes"`
+	Flags           detector.Flags `json:"flags"`
+	IsPasswordSet   bool           `json:"is_password_set"`
 }
 
 // Apps is list of applications
@@ -53,6 +56,8 @@ type App struct {
 	// Datetime of deletion
 	DeletedAt *time.Time `sql:"index" json:"deleted_at"`
 
+	// ####################################################
+	// This part is used in app template
 	// Name of the application
 	// Example: test_1234
 	Name string `json:"name" gorm:"unique,index,not_null"`
@@ -64,6 +69,9 @@ type App struct {
 	// Unique: true
 	// Example: 10002
 	HTTPPort int `json:"http_port"`
+	// Port of the application inside the container. Default is 0 which means default by the image.
+	// But it has to be between 1024 and 65536 with exception of 8000.
+	AppPort int `json:"app_port"`
 	// Runtime image
 	Image string `json:"image"`
 	// Number of CPUs ticks assigned, 100 means one CPU, 200 are two
@@ -72,9 +80,12 @@ type App struct {
 	Memory int `json:"memory"` // Limit in MB
 	// Custom labels
 	Labels []Label `json:"labels" gorm:"foreignkey:AppID"` // username:cx or user_id:1
+	// ####################################################
 
 	// Current status of the application (underlaying container)
 	State string `json:"state"`
+	// True if the current container has been killed by OOM killer
+	OOMKilled bool `json:"oom_killed"`
 	// CPU usage in percents
 	CPUUsage float64 `json:"cpu_usage"` // in percents
 	// Memory usage in bytes
@@ -83,6 +94,44 @@ type App struct {
 	DiskUsageBytes int `json:"disk_usage_bytes"`
 	// Disk usage in inodes
 	DiskUsageInodes int `json:"disk_usage_inodes"`
+	// Flags from detector of problems in the container
+	Flags         string `json:"flags"`           // flags are separated by comma
+	IsPasswordSet bool   `json:"is_password_set"` // True if the password is set in the container (file with the password exists)
+
+	// this is gathered in docker package and has to be assembled externally
+	Techs       AppTechs `json:"techs,omitempty" gorm:"-"`        // list of available technologies in the image
+	PrimaryTech AppTech  `json:"primary_tech,omitempty" gorm:"-"` // Technology that was selected as primary in the environment
+
+	// This is not store in the database but used in create request when the app suppose to be created from an existing snapshot
+	Snapshot string `json:"snapshot" gorm:"-"`
+
+	EnvRaw jsonmap.JSONMap `json:"env" sql:"type:json"`
+
+	// Fields to setup during creating of the app, this is not stored in the database
+	Setup struct {
+		SSHKeys     string `json:"ssh_keys"`
+		Tech        string `json:"tech"`
+		TechVersion string `json:"tech_version"`
+		Password    string `json:"password"`
+		ArchiveURL  string `json:"archive_url"` // Archive with content of /srv
+	} `json:"setup,omitempty" gorm:"-"`
+}
+
+// Return env as map[string]string
+func (a *App) GetEnv() map[string]string {
+	env := make(map[string]string)
+	for key, value := range a.EnvRaw {
+		env[key] = value.(string)
+	}
+	return env
+}
+
+// SetEnv sets env from map[string]string
+func (a *App) SetEnv(env map[string]string) {
+	a.EnvRaw = make(jsonmap.JSONMap)
+	for key, value := range env {
+		a.EnvRaw[key] = value
+	}
 }
 
 // Validate do basic checks of the struct values
@@ -102,6 +151,10 @@ func (a *App) Validate() []string {
 		errors = append(errors, "HTTP port has to be between 1 and 65536")
 	}
 
+	if a.AppPort != 0 && ((a.AppPort < 1024 && a.AppPort > 65536) || a.AppPort == 8000) {
+		errors = append(errors, "App port has to be between 1024 and 65536 with exception of 8000")
+	}
+
 	if a.Image == "" {
 		errors = append(errors, "image cannot be empty")
 	}
@@ -116,3 +169,12 @@ func (a *App) Validate() []string {
 
 	return errors
 }
+
+// AppTechs is list of technologies available in the app
+type AppTechs []AppTech
+
+// AppTech holds info about one technology in the app
+type AppTech struct {
+	Name    string `json:"name"`
+	Version string `json:"version"`
+}

auth.go

@@ -3,7 +3,7 @@ package main
 import (
 	"strings"
 
-	"github.com/labstack/echo"
+	"github.com/labstack/echo/v4"
 )
 
 var skipPaths []string = []string{"/metrics"}

common/config.go

@@ -8,6 +8,7 @@ import (
 
 // Config keeps info about configuration of this daemon
 type Config struct {
+	DockerSocket         string `envconfig:"DOCKER_SOCKET" default:"unix:///var/run/docker.sock"`
 	Token                string `envconfig:"TOKEN" required:"true"`
 	AppsPath             string `envconfig:"APPS_PATH" default:"/srv"`            // Where applications are located
 	AppsBindIPHTTP       string `envconfig:"APPS_BIND_IP_HTTP" default:"0.0.0.0"` // On what IP apps' HTTP port gonna be bound
@@ -21,6 +22,9 @@ type Config struct {
 	SnapshotsS3Endpoint  string `envconfig:"SNAPSHOTS_S3_ENDPOINT" required:"false"`
 	SnapshotsS3SSL       bool   `envconfig:"SNAPSHOTS_S3_SSL" required:"false" default:"true"`
 	SnapshotsS3Bucket    string `envconfig:"SNAPSHOTS_S3_BUCKET" required:"false" default:"snapshots"`
+	SnapshotsIndexLabel  string `envconfig:"SNAPSHOTS_INDEX_LABEL" required:"false" default:"owner_id"` // Label that will be part of the object name and it will be used as index to quick listing
+	SentryDSN            string `envconfig:"SENTRY_DSN" required:"false"`
+	SentryENV            string `envconfig:"SENTRY_ENV" default:"development"`
 }
 
 // GetConfig return configuration created based on environment variables

containers/docker.go

@@ -1,9 +1,10 @@
-package docker
+package containers
 
 import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"log"
@@ -17,6 +18,8 @@ import (
 	"github.com/docker/docker/api/types/network"
 	dockerClient "github.com/docker/docker/client"
 	"github.com/docker/go-connections/nat"
+	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/rosti-cz/node-api/detector"
 )
 
 // Stats delay in seconds
@@ -25,29 +28,22 @@ const statsDelay = 1
 // Docker timeout
 const dockerTimeout = 10
 
-// DOCKER_SOCK tells where to connect to docker, it will be always local sock
-const dockerSock = "/var/run/docker.sock"
-const podmanSock = "/run/podman/podman.sock"
-
-// DOCKER_API_VERSION set API version of Docker, 1.40 belongs to Docker 19.03.11
-const dockerAPIVersion = "1.38"
+// DOCKER_API_VERSION set API version of Docker, 1.41 is needed for the platform struct
+const dockerAPIVersion = "1.41"
 
 // Driver keeps everything for connection to Docker
 type Driver struct {
+	DockerSock string // Docker socket
 	BindIPHTTP string // IP to which containers are bound
 	BindIPSSH  string // IP to which containers are bound
 }
 
 func (d *Driver) getClient() (*dockerClient.Client, error) {
-	var connectTo string
-	if _, err := os.Stat(podmanSock); !os.IsNotExist(err) {
-		connectTo = podmanSock
-	} else {
-		connectTo = dockerSock
+	cli, err := dockerClient.NewClient(d.DockerSock, dockerAPIVersion, nil, nil)
+	if err != nil {
+		return cli, fmt.Errorf("get docker client error: %v", err)
 	}
-
-	cli, err := dockerClient.NewClient("unix://"+connectTo, dockerAPIVersion, nil, nil)
-	return cli, err
+	return cli, nil
 }
 
 // ConnectionStatus checks connection to the Docker daemon
@@ -83,8 +79,10 @@ func (d *Driver) nameToID(name string) (string, error) {
 }
 
 // Status return current status of container with given name
-func (d *Driver) Status(name string) (string, error) {
-	status := "unknown"
+func (d *Driver) Status(name string) (ContainerStatus, error) {
+	status := ContainerStatus{
+		Status: "unknown",
+	}
 
 	cli, err := d.getClient()
 	if err != nil {
@@ -94,7 +92,8 @@ func (d *Driver) Status(name string) (string, error) {
 
 	containerID, err := d.nameToID(name)
 	if err != nil && err.Error() == "no container found" {
-		return "no-container", err
+		status.Status = "no-container"
+		return status, err
 	}
 	if err != nil {
 		return status, err
@@ -105,7 +104,10 @@ func (d *Driver) Status(name string) (string, error) {
 		return status, err
 	}
 
-	return info.State.Status, nil
+	status.Status = info.State.Status
+	status.OOMKilled = info.State.OOMKilled
+
+	return status, nil
 
 }
 
@@ -200,13 +202,13 @@ func (d *Driver) Remove(name string) error {
 		return err
 	}
 
-	timeout := time.Duration(dockerTimeout * time.Second)
-	err = cli.ContainerStop(context.TODO(), containerID, &timeout)
+	timeout := dockerTimeout
+	err = cli.ContainerStop(context.TODO(), containerID, container.StopOptions{Timeout: &timeout})
 	if err != nil {
 		return err
 	}
 
-	err = cli.ContainerRemove(context.TODO(), containerID, types.ContainerRemoveOptions{})
+	err = cli.ContainerRemove(context.TODO(), containerID, container.RemoveOptions{})
 
 	return err
 }
@@ -244,8 +246,8 @@ func (d *Driver) Stop(name string) error {
 		return err
 	}
 
-	timeout := time.Duration(dockerTimeout * time.Second)
-	err = cli.ContainerStop(context.TODO(), containerID, &timeout)
+	timeout := dockerTimeout
+	err = cli.ContainerStop(context.TODO(), containerID, container.StopOptions{Timeout: &timeout})
 
 	return err
 }
@@ -305,7 +307,7 @@ func (d *Driver) pullImage(image string) error {
 // cmd - string slice of command and its arguments
 // volumePath - host's directory to mount into the container
 // returns container ID
-func (d *Driver) Create(name string, image string, volumePath string, HTTPPort int, SSHPort int, CPU int, memory int, cmd []string) (string, error) {
+func (d *Driver) Create(name string, image string, volumePath string, HTTPPort int, SSHPort int, CPU int, memory int, cmd []string, env map[string]string) (string, error) {
 	log.Println("Creating container " + name)
 	cli, err := d.getClient()
 	if err != nil {
@@ -336,11 +338,21 @@ func (d *Driver) Create(name string, image string, volumePath string, HTTPPort i
 		}
 	}
 
+	OOMKillDisable := false
+	if memory < 1500 {
+		OOMKillDisable = true
+	}
+
+	envList := []string{}
+	for key, value := range env {
+		envList = append(envList, key+"="+value)
+	}
+
 	createdContainer, err := cli.ContainerCreate(
 		context.Background(),
 		&container.Config{
 			Hostname: name,
-			Env:      []string{},
+			Env:      envList,
 			Image:    image,
 			Cmd:      cmd,
 			ExposedPorts: nat.PortSet{
@@ -354,6 +366,7 @@ func (d *Driver) Create(name string, image string, volumePath string, HTTPPort i
 				CPUQuota:          int64(CPU) * 1000,
 				Memory:            int64(memory*110/100) * 1024 * 1024, // Allow 10 % more memory so we have space for MemoryReservation
 				MemoryReservation: int64(memory) * 1024 * 1024,         // This should provide softer way how to limit the memory of our containers
+				OomKillDisable:    &OOMKillDisable,
 			},
 			PortBindings: portBindings,
 			AutoRemove:   false,
@@ -366,6 +379,10 @@ func (d *Driver) Create(name string, image string, volumePath string, HTTPPort i
 			},
 		},
 		&network.NetworkingConfig{},
+		&specs.Platform{
+			Architecture: "amd64",
+			OS:           "linux",
+		},
 		name,
 	)
 	if err != nil {
@@ -418,11 +435,9 @@ func (d *Driver) Exec(name string, cmd []string, stdin string, env []string, att
 		return &[]byte{}, err
 	}
 
-	respAttach, err := cli.ContainerExecAttach(ctx, resp.ID, types.ExecConfig{
-		AttachStdin:  stdinEnabled,
-		AttachStdout: attachStdout,
-		AttachStderr: false,
-		Tty:          attachStdout,
+	respAttach, err := cli.ContainerExecAttach(ctx, resp.ID, types.ExecStartCheck{
+		Detach: false,
+		Tty:    true,
 	})
 	if err != nil {
 		return &[]byte{}, err
@@ -448,3 +463,44 @@ func (d *Driver) Exec(name string, cmd []string, stdin string, env []string, att
 
 	return &stdouterr, err
 }
+
+// GetProcesses return list of processes running under this container
+func (d *Driver) GetProcesses(name string) ([]string, error) {
+	processes := []string{}
+
+	ctx := context.Background()
+
+	cli, err := d.getClient()
+	if err != nil {
+		return processes, err
+	}
+	defer cli.Close()
+
+	processList, err := cli.ContainerTop(ctx, name, []string{"-eo", "pid,args"})
+	if err != nil {
+		return processes, fmt.Errorf("docker container top call error: %v", err)
+	}
+
+	for _, process := range processList.Processes {
+		if len(process) > 0 {
+			// This removes PID from the list. PID has to be printed otherwise docker daemon can't handle it.
+			processes = append(processes, strings.Join(strings.Fields(process[0])[1:], " "))
+		}
+	}
+
+	return processes, nil
+}
+
+// GetFlags returns list of flags with problems found in the container, mainly used to detect miners or viruses
+func (d *Driver) GetFlags(name string) (detector.Flags, error) {
+	processes, err := d.GetProcesses(name)
+	if err != nil {
+		return detector.Flags{}, err
+	}
+	flags, err := detector.Check(processes)
+	if err != nil {
+		return flags, err
+	}
+
+	return flags, nil
+}

containers/docker_test.go

@@ -0,0 +1,44 @@
+package containers
+
+import (
+	"os"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func getTestDockerSock() string {
+	dockerSocket := os.Getenv("DOCKER_SOCKET")
+	if dockerSocket == "" {
+		return "unix:///run/user/1000/podman/podman.sock"
+	}
+	return dockerSocket
+}
+
+func TestGetProcesses(t *testing.T) {
+	driver := Driver{
+		DockerSock: getTestDockerSock(),
+		BindIPHTTP: "127.0.0.1",
+		BindIPSSH:  "127.0.0.1",
+	}
+
+	driver.Remove("test")
+
+	env := make(map[string]string)
+	env["TEST"] = "test"
+
+	_, err := driver.Create("test", "docker.io/library/busybox", "/tmp", 8990, 8922, 1, 128, []string{"sleep", "3600"}, env)
+	assert.Nil(t, err)
+
+	err = driver.Start("test")
+	assert.Nil(t, err)
+
+	time.Sleep(5 * time.Second)
+
+	processes, err := driver.GetProcesses("test")
+	assert.Nil(t, err)
+	assert.Contains(t, processes, "sleep 3600")
+
+	driver.Remove("test")
+}

containers/stats.go

@@ -0,0 +1,19 @@
+package containers
+
+// ContainerStats contains fields returned in docker stats function stream
+type ContainerStats struct {
+    Pids struct {
+        Current int `json:"current"`
+    } `json:"pids_stats"`
+    CPU struct {
+        Usage struct {
+            Total int64 `json:"total_usage"`
+        } `json:"cpu_usage"`
+    } `json:"cpu_stats"`
+    Memory struct {
+        Usage    int `json:"usage"`
+        MaxUsage int `json:"max_usage"`
+        Limit    int `json:"limit"`
+    } `json:"memory_stats"`
+    ID string `json:"id"`
+}

containers/tools.go

@@ -1,11 +1,13 @@
-package docker
+package containers
 
 import (
 	"bytes"
+	"fmt"
 	"log"
 	"os"
 	"os/exec"
 	"path/filepath"
+	"regexp"
 	"strconv"
 	"strings"
 	"time"
@@ -62,7 +64,7 @@ func du(path string) (int, int, error) {
 	return space, inodes, nil
 }
 
-// Removes content of given directory
+// Removes content of given directory and then the directory itself
 func removeDirectory(dir string) error {
 	d, err := os.Open(dir)
 	if err != nil {
@@ -79,6 +81,12 @@ func removeDirectory(dir string) error {
 			return err
 		}
 	}
+
+	err = os.Remove(filepath.Join(dir))
+	if err != nil {
+		return err
+	}
+
 	return nil
 }
 
@@ -129,3 +137,53 @@ func CPUMemoryStats(applist *[]apps.App, sample int) (*[]apps.App, error) {
 
 	return &updatedApps, nil
 }
+
+func getTechAndVersion(symlink string) (*TechInfo, error) {
+	link, err := os.Readlink(symlink)
+	if os.IsNotExist(err) {
+		return &TechInfo{
+			Tech:    "default",
+			Version: "",
+		}, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("error reading symlink: %w", err)
+	}
+
+	absLink, err := filepath.Abs(link)
+	if err != nil {
+		return nil, fmt.Errorf("error getting absolute path: %w", err)
+	}
+	absLink = strings.TrimSuffix(absLink, "/bin")
+
+	dirName := filepath.Base(absLink)
+	parts := strings.Split(dirName, "-")
+	fmt.Println("DEBUG", symlink)
+	fmt.Println("DEBUG", absLink)
+	fmt.Println("DEBUG", dirName)
+	fmt.Println("DEBUG", parts)
+	if len(parts) < 2 {
+		return &TechInfo{
+			Tech:    "default",
+			Version: "",
+		}, nil
+	}
+
+	re := regexp.MustCompile(`\d+\.\d+\.\d+`)
+	version := re.FindString(parts[1])
+	if version == "" {
+		// In case version couldn't be determined we return "unknown", otherwise returning
+		// error in this case was crashing admin when user fucked up the symlink for the
+		// tech manually.
+		log.Println("failed to extract version from symlink")
+		return &TechInfo{
+			Tech:    "unknown",
+			Version: "",
+		}, nil
+	}
+
+	return &TechInfo{
+		Tech:    parts[0],
+		Version: version,
+	}, nil
+}

containers/types.go

@@ -0,0 +1,640 @@
+package containers
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+
+	"github.com/rosti-cz/node-api/apps"
+	"github.com/rosti-cz/node-api/detector"
+)
+
+// username in the containers under which all containers run
+const appUsername = "app"
+const owner = "app:app"
+const passwordFile = "/srv/.rosti"
+const passwordFileNoPath = ".rosti"
+const deployKeyType = "ed25519"
+const deployKeyPrefix = "rosti_deploy"
+
+// Structure containing info about technology and its version
+type TechInfo struct {
+	Tech    string `json:"tech"`
+	Version string `json:"version"`
+}
+
+// Process contains info about background application usually running in supervisor
+type Process struct {
+	Name  string `json:"name"`
+	State string `json:"state"`
+}
+
+// Current status of the container
+type ContainerStatus struct {
+	Status    string `json:"status"`
+	OOMKilled bool   `json:"oom_killed"`
+}
+
+// Container extends App struct from App
+type Container struct {
+	App        *apps.App `json:"app"`
+	DockerSock string    `json:"-"`
+	BindIPHTTP string    `json:"-"`
+	BindIPSSH  string    `json:"-"`
+	AppsPath   string    `json:"-"`
+}
+
+func (c *Container) getDriver() *Driver {
+	driver := &Driver{
+		DockerSock: c.DockerSock,
+		BindIPHTTP: c.BindIPHTTP,
+		BindIPSSH:  c.BindIPSSH,
+	}
+	return driver
+}
+
+// volumeHostPath each container has one volume mounted into it,
+func (c *Container) VolumeHostPath() string {
+	return path.Join(c.AppsPath, c.App.Name)
+}
+
+// GetRawResourceStats returns RAW CPU and memory usage directly from Docker API
+func (c *Container) GetRawResourceStats() (int64, int, error) {
+	driver := c.getDriver()
+	cpu, memory, err := driver.RawStats(c.App.Name)
+	return cpu, memory, err
+}
+
+// GetState returns app state object with populated state fields
+func (c *Container) GetState() (*apps.AppState, error) {
+	status, err := c.Status()
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: this implementation takes more than one hour for 470 containers. It needs to be implemented differently.
+	// cpu, memory, err := c.ResourceUsage()
+	// if err != nil {
+	// 	return nil, err
+	// }
+
+	bytes, inodes, err := c.DiskUsage()
+	if err != nil {
+		return nil, err
+	}
+
+	processes, err := c.GetSystemProcesses()
+	if err != nil {
+		return nil, err
+	}
+
+	flags, err := detector.Check(processes)
+	if err != nil {
+		return nil, err
+	}
+
+	isPasswordSet, err := c.IsPasswordSet()
+	if err != nil {
+		return nil, err
+	}
+
+	state := apps.AppState{
+		State:     status.Status,
+		OOMKilled: status.OOMKilled,
+		// CPUUsage:        cpu,
+		// MemoryUsage:     memory,
+		CPUUsage:        -1.0,
+		MemoryUsage:     -1.0,
+		DiskUsageBytes:  bytes,
+		DiskUsageInodes: inodes,
+		Flags:           flags,
+		IsPasswordSet:   isPasswordSet,
+	}
+
+	return &state, nil
+}
+
+// Status returns state of the container
+// Possible values: running, exited (stopped), no-container, unknown
+func (c *Container) Status() (ContainerStatus, error) {
+	status := ContainerStatus{
+		Status: "unknown",
+	}
+
+	driver := c.getDriver()
+	containerStatus, err := driver.Status(c.App.Name)
+	if err != nil && err.Error() == "no container found" {
+		return ContainerStatus{Status: "no-container"}, nil
+	}
+	if err != nil {
+		return status, err
+	}
+
+	return containerStatus, nil
+}
+
+// DiskUsage returns number of bytes and inodes used by the container in it's mounted volume
+func (c *Container) DiskUsage() (int, int, error) {
+	return du(c.VolumeHostPath())
+}
+
+// IsPasswordSet returns true if the password is set for the container (file with the password exists)
+func (c *Container) IsPasswordSet() (bool, error) {
+	_, err := os.Stat(path.Join(c.VolumeHostPath(), passwordFileNoPath))
+	if err != nil && os.IsNotExist(err) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+
+	return true, nil
+}
+
+// ResourceUsage returns amount of memory in B and CPU in % that the app occupies
+func (c *Container) ResourceUsage() (float64, int, error) {
+	driver := c.getDriver()
+
+	cpu, memory, err := driver.Stats(c.App.Name)
+	if err != nil {
+		return 0.0, 0, err
+	}
+
+	return cpu, memory, nil
+}
+
+// Create creates the container
+func (c *Container) Create() error {
+	driver := c.getDriver()
+	_, err := driver.Create(
+		c.App.Name,
+		c.App.Image,
+		c.VolumeHostPath(),
+		c.App.HTTPPort,
+		c.App.SSHPort,
+		c.App.CPU,
+		c.App.Memory,
+		[]string{},
+		c.App.GetEnv(),
+	)
+
+	return err
+}
+
+// Start starts the container
+func (c *Container) Start() error {
+	driver := c.getDriver()
+
+	return driver.Start(c.App.Name)
+}
+
+// Stop stops the container
+func (c *Container) Stop() error {
+	driver := c.getDriver()
+
+	return driver.Stop(c.App.Name)
+}
+
+// Restart restarts the container
+func (c *Container) Restart() error {
+	driver := c.getDriver()
+
+	err := driver.Stop(c.App.Name)
+	if err != nil {
+		return err
+	}
+
+	return driver.Start(c.App.Name)
+}
+
+// Destroy removes the container but keeps the data so it can be created again
+func (c *Container) Destroy() error {
+	driver := c.getDriver()
+
+	return driver.Remove(c.App.Name)
+}
+
+// Delete removes both data and the container
+func (c *Container) Delete() error {
+	status, err := c.Status()
+	if err != nil {
+		return err
+	}
+
+	// It's questionable to have this here. The problem is this method
+	// does two things, deleting the container and the data and when
+	// the deleted container doesn't exist we actually don't care
+	// and we can continue to remove the data.
+	if status.Status != "no-container" {
+		err = c.Destroy()
+		if err != nil {
+			return err
+		}
+	}
+
+	volumePath := path.Join(c.AppsPath, c.App.Name)
+	err = removeDirectory(volumePath)
+	if err != nil {
+		log.Println(err)
+	}
+
+	return nil
+}
+
+// SetPassword configures password for system user app in the container
+func (c *Container) SetPassword(password string) error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(c.App.Name, []string{"chpasswd"}, appUsername+":"+password, []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"tee", passwordFile}, password, []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	return err
+}
+
+// ClearPassword removes password for system user app in the container
+func (c *Container) ClearPassword() error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(c.App.Name, []string{"passwd", "-d", "app"}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"rm", "-f", passwordFile}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	return err
+}
+
+// Generate SSH keys and copies it into authorized keys
+// Returns true if the key was generated in this call and error if there is any.
+// The container has to run for this to work.
+func (c *Container) GenerateDeploySSHKeys() (bool, error) {
+	driver := c.getDriver()
+
+	privateKey, pubKey, _ := c.GetDeploySSHKeys()
+	if privateKey != "" || pubKey != "" {
+		return false, nil
+	}
+
+	_, err := driver.Exec(c.App.Name, []string{"mkdir", "-p", "/srv/.ssh"}, "", []string{}, true)
+	if err != nil {
+		return false, err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"ssh-keygen", "-t", deployKeyType, "-f", "/srv/.ssh/" + deployKeyPrefix + "_id_" + deployKeyType, "-P", ""}, "", []string{}, true)
+	if err != nil {
+		return false, err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chown", "app:app", "-R", "/srv/.ssh"}, "", []string{}, true)
+	if err != nil {
+		return false, err
+	}
+
+	return true, nil
+}
+
+// Generate SSH keys and copies it into authorized keys
+// Return private key, public key and error.
+// The container has to run for this to work.
+func (c *Container) GetDeploySSHKeys() (string, string, error) {
+	driver := c.getDriver()
+
+	privateKey, err := driver.Exec(c.App.Name, []string{"cat", "/srv/.ssh/" + deployKeyPrefix + "_id_" + deployKeyType}, "", []string{}, true)
+	if err != nil {
+		return "", "", err
+	}
+	pubKey, err := driver.Exec(c.App.Name, []string{"cat", "/srv/.ssh/" + deployKeyPrefix + "_id_" + deployKeyType + ".pub"}, "", []string{}, true)
+	if err != nil {
+		return "", "", err
+	}
+
+	if privateKey != nil && pubKey != nil && !bytes.Contains(*privateKey, []byte("No such file")) && !bytes.Contains(*pubKey, []byte("No such file")) {
+		return string(*privateKey), string(*pubKey), nil
+	}
+
+	return "", "", nil
+}
+
+// Return host key without hostname
+// The container has to run for this to work.
+func (c *Container) GetHostKey() (string, error) {
+	driver := c.getDriver()
+
+	hostKeyRaw, err := driver.Exec(c.App.Name, []string{"ssh-keyscan", "localhost"}, "", []string{}, true)
+	if err != nil {
+		return "", err
+	}
+
+	// Loop over lines and search for localhost ssh
+	line := ""
+	if hostKeyRaw != nil {
+		for _, line = range strings.Split(string(*hostKeyRaw), "\n") {
+			if strings.HasPrefix(line, "localhost ssh") {
+				line = strings.TrimSpace(line)
+				break
+			}
+		}
+	}
+
+	if line == "" {
+		return "", errors.New("key not found")
+	}
+
+	parts := strings.SplitN(line, " ", 2)
+	if len(parts) > 1 {
+		return parts[1], nil
+	}
+
+	return "", errors.New("key not found")
+}
+
+// Append text to a file in the container
+func (c *Container) AppendFile(filename string, text string, mode string) error {
+	driver := c.getDriver()
+
+	directory := path.Dir(filename)
+
+	_, err := driver.Exec(c.App.Name, []string{"mkdir", "-p", directory}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"tee", "-a", filename}, text, []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chmod", mode, filename}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chown", owner, directory}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chown", owner, filename}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// SetAppPort changes application port in the container
+func (c *Container) SetAppPort(port int) error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(
+		c.App.Name,
+		[]string{
+			"sed",
+			"-i",
+			"s+proxy_pass[ ]*http://127.0.0.1:8080/;+proxy_pass         http://127.0.0.1:" + strconv.Itoa(port) + "/;+g",
+			"/srv/conf/nginx.d/app.conf",
+		},
+		"",
+		[]string{},
+		false,
+	)
+	if err != nil {
+		return err
+	}
+
+	return err
+}
+
+// SetFileContent uploads text into a file inside the container. It's greate for uploading SSH keys.
+// The method creates the diretory where the file is located and sets mode of the final file
+func (c *Container) SetFileContent(filename string, text string, mode string) error {
+	driver := c.getDriver()
+
+	directory := path.Dir(filename)
+
+	_, err := driver.Exec(c.App.Name, []string{"mkdir", "-p", directory}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"tee", filename}, text, []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chown", owner, directory}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chown", owner, filename}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"chmod", mode, filename}, "", []string{}, false)
+	return err
+}
+
+// SetTechnology prepares container for given technology (Python, PHP, Node.js, ...)
+// Where tech can be php, python or node and latest available version is used.
+// If version is empty string default version will be used.
+func (c *Container) SetTechnology(tech string, version string) error {
+	driver := c.getDriver()
+
+	var err error
+
+	// TODO: script injection here?
+	var output *[]byte
+	if version == "" {
+		output, err = driver.Exec(c.App.Name, []string{"su", "app", "-c", "rosti " + tech}, "", []string{}, false)
+	} else {
+		output, err = driver.Exec(c.App.Name, []string{"su", "app", "-c", "rosti " + tech + " " + version}, "", []string{}, false)
+	}
+
+	log.Printf("DEBUG: enable tech %s/%s for %s output: %s", tech, version, c.App.Name, string(*output))
+
+	return err
+}
+
+// GetProcessList returns list of processes managed by supervisor.
+func (c *Container) GetProcessList() ([]Process, error) {
+	driver := c.getDriver()
+
+	processes := []Process{}
+
+	stdouterr, err := driver.Exec(c.App.Name, []string{"supervisorctl", "status"}, "", []string{}, true)
+	if err != nil {
+		return processes, nil
+	}
+
+	trimmed := strings.TrimSpace(string(*stdouterr))
+	for _, row := range strings.Split(trimmed, "\n") {
+		fields := strings.Fields(row)
+		if len(fields) > 2 {
+			processes = append(processes, Process{
+				Name:  fields[0],
+				State: fields[1],
+			})
+		}
+	}
+
+	return processes, nil
+}
+
+// Restarts supervisord process
+func (c *Container) RestartProcess(name string) error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(c.App.Name, []string{"supervisorctl", "restart", name}, "", []string{}, false)
+	return err
+}
+
+// Starts supervisord process
+func (c *Container) StartProcess(name string) error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(c.App.Name, []string{"supervisorctl", "start", name}, "", []string{}, false)
+	return err
+}
+
+// Stops supervisord process
+func (c *Container) StopProcess(name string) error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(c.App.Name, []string{"supervisorctl", "stop", name}, "", []string{}, false)
+	return err
+}
+
+// Reread supervisord config
+func (c *Container) ReloadSupervisor() error {
+	driver := c.getDriver()
+
+	_, err := driver.Exec(c.App.Name, []string{"supervisorctl", "reread"}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	_, err = driver.Exec(c.App.Name, []string{"supervisorctl", "update"}, "", []string{}, false)
+	if err != nil {
+		return err
+	}
+
+	return err
+}
+
+// GetSystemProcesses return list of running system processes
+func (c *Container) GetSystemProcesses() ([]string, error) {
+	driver := c.getDriver()
+
+	processes, err := driver.GetProcesses(c.App.Name)
+	return processes, err
+}
+
+// GetPrimaryTech returns primary tech configured in the container.
+func (c *Container) GetPrimaryTech() (apps.AppTech, error) {
+	tech := apps.AppTech{}
+
+	driver := c.getDriver()
+
+	stdouterr, err := driver.Exec(c.App.Name, []string{"readlink", "/srv/bin/primary_tech"}, "", []string{}, true)
+	if err != nil {
+		// in case there is an error just return empty response
+		return tech, nil
+	}
+
+	if len(string(*stdouterr)) > 0 {
+		parts := strings.Split(string(*stdouterr), "/")
+		if len(parts) == 5 {
+			rawTech := parts[3]
+			if rawTech == "default" {
+				return apps.AppTech{
+					Name:    "default",
+					Version: "",
+				}, nil
+			}
+
+			techParts := strings.Split(rawTech, "-")
+			if len(techParts) != 2 {
+				return tech, errors.New("wrong number of tech parts (" + rawTech + ")")
+			}
+			return apps.AppTech{
+				Name:    techParts[0],
+				Version: techParts[1],
+			}, nil
+		}
+	}
+
+	// Probably single technology image in case the output is empty
+	return tech, nil
+}
+
+// GetTechs returns all techs available in the container
+func (c *Container) GetTechs() (apps.AppTechs, error) {
+	techs := apps.AppTechs{}
+
+	driver := c.getDriver()
+
+	stdouterr, err := driver.Exec(c.App.Name, []string{"ls", "/opt"}, "", []string{}, true)
+	if err != nil {
+		// in case there is an error just return empty response
+		return techs, nil
+	}
+
+	// Check if /opt/techs exists
+	if !strings.Contains(string(*stdouterr), "techs") {
+		return techs, nil
+	}
+
+	stdouterr, err = driver.Exec(c.App.Name, []string{"ls", "/opt/techs"}, "", []string{}, true)
+	if err != nil {
+		// in case there is an error just return empty response
+		return techs, nil
+	}
+
+	// If the directory doesn't exist it's single technology image
+	if strings.Contains(string(*stdouterr), "No such file or directory") {
+		return techs, nil
+	}
+
+	techsRaw := strings.Fields(string(*stdouterr))
+	for _, techRaw := range techsRaw {
+		techParts := strings.Split(techRaw, "-")
+		if len(techParts) == 2 {
+			techs = append(techs, apps.AppTech{
+				Name:    techParts[0],
+				Version: techParts[1],
+			})
+		} else {
+			return techs, fmt.Errorf("one of the tech has wrong number of parts (%s)", techRaw)
+		}
+	}
+
+	return techs, nil
+}
+
+// Returns info about active technology
+func (c *Container) GetActiveTech() (*TechInfo, error) {
+	info, err := getTechAndVersion(path.Join(c.VolumeHostPath(), "bin", "primary_tech"))
+	if err != nil {
+		return info, err
+	}
+
+	return info, nil
+}

containers/types_test.go

@@ -0,0 +1,39 @@
+package containers
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestGetTechAndVersion(t *testing.T) {
+	// Create a temporary directory for testing
+	tempDir := t.TempDir()
+
+	// Create a fake language directory with version in the temporary directory
+	fakeLangDir := filepath.Join(tempDir, "techs", "python-3.10.4", "bin")
+	err := os.MkdirAll(fakeLangDir, 0755)
+	if err != nil {
+		t.Fatalf("Failed to create fake language directory: %v", err)
+	}
+
+	// Create a symlink for testing
+	symlink := filepath.Join(tempDir, "primary_tech")
+	err = os.Symlink(fakeLangDir, symlink)
+	if err != nil {
+		t.Fatalf("Failed to create symlink: %v", err)
+	}
+
+	// Test parseLanguageAndVersion function
+	info, err := getTechAndVersion(symlink)
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	expectedLanguage := "python"
+	expectedVersion := "3.10.4"
+	if info.Tech != expectedLanguage || info.Version != expectedVersion {
+		t.Errorf("Expected language: %s, version: %s, but got language: %s, version: %s",
+			expectedLanguage, expectedVersion, info.Tech, info.Version)
+	}
+}

contrib/test_messages.sh

@@ -3,4 +3,5 @@
 nats pub --count 1 admin.apps.node-x.requests -w '{"type": "list"}'
 nats pub --count 1 admin.apps.node-x.requests -w '{"type": "get", "app_name": "test_1234"}'
 
-nats pub --count 1 admin.apps.node-x.requests -w '{"type": "create", "app_name": "natstest_0004", "payload": {"name": "natstest_0004", "image": "docker.io/rosti/runtime:2020.09-1", "cpu": 50, "memory": 256, "ssh_port": 20004, "http_port": 30004}}'
+nats pub --count 1 admin.apps.node-local.requests -w '{"type": "create", "name": "testrunnats_5372", "payload": "{\"name\": \"testrunnats_5372\", \"image\": \"docker.io/rosti/runtime:2022.01-1\", \"cpu\": 50, \"memory\": 512, \"ssh_port\": 25372, \"http_port\": 35372}"}'
+nats pub --count 1 admin.apps.node-local.requests -w '{"type": "create", "name": "testrunnats_5372", "payload": "{\"name\": \"testrunnats_5372\", \"image\": \"harbor.hq.rosti.cz/public/runtime:2022.01-1\", \"cpu\": 50, \"memory\": 512, \"ssh_port\": 25372, \"http_port\": 35372}"}'

detector/main.go

@@ -0,0 +1,40 @@
+package detector
+
+import (
+	"regexp"
+	"strings"
+)
+
+// Flags is list of strings describing problems found among the processes
+type Flags []string
+
+func (f *Flags) String() string {
+	return strings.Join(*f, ",")
+}
+
+// Check goes over patterns and tries to flag given list of processes with flags.
+func Check(processes []string) (Flags, error) {
+	flags := Flags{}
+	tmpFlags := make(map[string]bool)
+
+	for _, process := range processes {
+		for flag, patternSet := range patterns {
+			for _, pattern := range patternSet {
+				matched, err := regexp.MatchString(".*"+pattern+".*", process)
+				if err != nil {
+					return flags, err
+				}
+				if matched {
+					tmpFlags[flag] = true
+					break
+				}
+			}
+		}
+	}
+
+	for flag, _ := range tmpFlags {
+		flags = append(flags, flag)
+	}
+
+	return flags, nil
+}

detector/main_test.go

@@ -0,0 +1,35 @@
+package detector
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCheck(t *testing.T) {
+	flags, err := Check([]string{
+		"sleep",
+		"apache2",
+		"miner",
+		"verus-solve",
+	})
+	assert.Nil(t, err)
+	assert.Contains(t, flags, "miner")
+
+	flags, err = Check([]string{
+		"sleep",
+		"apache2",
+		"hellminer",
+	})
+	assert.Nil(t, err)
+	assert.Contains(t, flags, "miner")
+
+	flags, err = Check([]string{
+		"sleep",
+		"apache2",
+		"miner", // This is not among patterns map
+	})
+	assert.Nil(t, err)
+	assert.NotContains(t, flags, "miner")
+
+}

detector/patterns.go

@@ -0,0 +1,12 @@
+package detector
+
+var patterns map[string][]string = map[string][]string{
+	"miner": {
+		`verus\-solve`,
+		`hellminer`,
+	},
+	"bot": {
+		`youtube\-dl`,
+		`shiziyama`,
+	},
+}

docker/stats.go

@@ -1,19 +0,0 @@
-package docker
-
-// ContainerStats contains fields returned in docker stats function stream
-type ContainerStats struct {
-	Pids struct {
-		Current int `json:"current"`
-	} `json:"pids_stats"`
-	CPU struct {
-		Usage struct {
-			Total int64 `json:"total_usage"`
-		} `json:"cpu_usage"`
-	} `json:"cpu_stats"`
-	Memory struct {
-		Usage    int `json:"usage"`
-		MaxUsage int `json:"max_usage"`
-		Limit    int `json:"limit"`
-	} `json:"memory_stats"`
-	ID string `json:"id"`
-}

docker/types.go

@@ -1,279 +0,0 @@
-package docker
-
-import (
-	"log"
-	"path"
-	"strings"
-
-	"github.com/rosti-cz/node-api/apps"
-	"github.com/rosti-cz/node-api/common"
-)
-
-// username in the containers under which all containers run
-const appUsername = "app"
-const passwordFile = "/srv/.rosti"
-
-// Process contains info about background application usually running in supervisor
-type Process struct {
-	Name  string `json:"name"`
-	State string `json:"state"`
-}
-
-// Container extends App struct from App
-type Container struct {
-	App *apps.App `json:"app"`
-}
-
-func (c *Container) getDriver() *Driver {
-	config := common.GetConfig()
-	driver := &Driver{
-		BindIPHTTP: config.AppsBindIPHTTP,
-		BindIPSSH:  config.AppsBindIPSSH,
-	}
-	return driver
-}
-
-// volumeHostPath each container has one volume mounted into it,
-func (c *Container) volumeHostPath() string {
-	config := common.GetConfig()
-	return path.Join(config.AppsPath, c.App.Name)
-}
-
-// GetRawResourceStats returns RAW CPU and memory usage directly from Docker API
-func (c *Container) GetRawResourceStats() (int64, int, error) {
-	driver := c.getDriver()
-	cpu, memory, err := driver.RawStats(c.App.Name)
-	return cpu, memory, err
-}
-
-// GetState returns app state object with populated state fields
-func (c *Container) GetState() (*apps.AppState, error) {
-	status, err := c.Status()
-	if err != nil {
-		return nil, err
-	}
-
-	// TODO: this implementation takes more than one hour for 470 containers. It needs to be implemented differently.
-	// cpu, memory, err := c.ResourceUsage()
-	// if err != nil {
-	// 	return nil, err
-	// }
-
-	bytes, inodes, err := c.DiskUsage()
-	if err != nil {
-		return nil, err
-	}
-
-	state := apps.AppState{
-		State: status,
-		// CPUUsage:        cpu,
-		// MemoryUsage:     memory,
-		CPUUsage:        -1.0,
-		MemoryUsage:     -1.0,
-		DiskUsageBytes:  bytes,
-		DiskUsageInodes: inodes,
-	}
-
-	return &state, nil
-}
-
-// Status returns state of the container
-// Possible values: running, stopped, no-container, unknown
-func (c *Container) Status() (string, error) {
-	status := "unknown"
-
-	// config := common.GetConfig()
-	// if _, err := os.Stat(path.Join(config.AppsPath, c.App.Name)); !os.IsNotExist(err) {
-	// 	status = "data-only"
-	// }
-
-	driver := c.getDriver()
-	containerStatus, err := driver.Status(c.App.Name)
-	if err != nil && err.Error() == "no container found" {
-		return "no-container", nil
-	}
-	if err != nil {
-		return status, err
-	}
-
-	status = containerStatus
-
-	return status, nil
-}
-
-// DiskUsage returns number of bytes and inodes used by the container in it's mounted volume
-func (c *Container) DiskUsage() (int, int, error) {
-	return du(c.volumeHostPath())
-}
-
-// ResourceUsage returns amount of memory in B and CPU in % that the app occupies
-func (c *Container) ResourceUsage() (float64, int, error) {
-	driver := c.getDriver()
-
-	cpu, memory, err := driver.Stats(c.App.Name)
-	if err != nil {
-		return 0.0, 0, err
-	}
-
-	return cpu, memory, nil
-}
-
-// Create creates the container
-func (c *Container) Create() error {
-	driver := c.getDriver()
-	_, err := driver.Create(
-		c.App.Name,
-		c.App.Image,
-		c.volumeHostPath(),
-		c.App.HTTPPort,
-		c.App.SSHPort,
-		c.App.CPU,
-		c.App.Memory,
-		[]string{},
-	)
-
-	return err
-}
-
-// Start starts the container
-func (c *Container) Start() error {
-	driver := c.getDriver()
-
-	return driver.Start(c.App.Name)
-}
-
-// Stop stops the container
-func (c *Container) Stop() error {
-	driver := c.getDriver()
-
-	return driver.Stop(c.App.Name)
-}
-
-// Restart restarts the container
-func (c *Container) Restart() error {
-	driver := c.getDriver()
-
-	err := driver.Stop(c.App.Name)
-	if err != nil {
-		return err
-	}
-
-	return driver.Start(c.App.Name)
-}
-
-// Destroy removes the container but keeps the data so it can be created again
-func (c *Container) Destroy() error {
-	driver := c.getDriver()
-
-	return driver.Remove(c.App.Name)
-}
-
-// Delete removes both data and the container
-func (c *Container) Delete() error {
-	status, err := c.Status()
-	if err != nil {
-		return err
-	}
-
-	// It's questionable to have this here. The problem is this method
-	// does two things, deleting the container and the data and when
-	// the deleted container doesn't exist we actually don't care
-	// and we can continue to remove the data.
-	if status != "no-container" {
-		err = c.Destroy()
-		if err != nil {
-			return err
-		}
-	}
-
-	config := common.GetConfig()
-	volumePath := path.Join(config.AppsPath, c.App.Name)
-	err = removeDirectory(volumePath)
-	if err != nil {
-		log.Println(err)
-	}
-
-	return nil
-}
-
-// SetPassword configures password for system user app in the container
-func (c *Container) SetPassword(password string) error {
-	driver := c.getDriver()
-
-	_, err := driver.Exec(c.App.Name, []string{"chpasswd"}, appUsername+":"+password, []string{}, false)
-	if err != nil {
-		return err
-	}
-
-	_, err = driver.Exec(c.App.Name, []string{"tee", passwordFile}, password, []string{}, false)
-	if err != nil {
-		return err
-	}
-
-	return err
-}
-
-// SetFileContent uploads text into a file inside the container. It's greate for uploading SSH keys.
-// The method creates the diretory where the file is located and sets mode of the final file
-func (c *Container) SetFileContent(filename string, text string, mode string) error {
-	driver := c.getDriver()
-
-	directory := path.Dir(filename)
-
-	_, err := driver.Exec(c.App.Name, []string{"mkdir", "-p", directory}, "", []string{}, false)
-	if err != nil {
-		return err
-	}
-
-	_, err = driver.Exec(c.App.Name, []string{"tee", filename}, text, []string{}, false)
-	if err != nil {
-		return err
-	}
-
-	_, err = driver.Exec(c.App.Name, []string{"chown", "app:app", directory}, "", []string{}, false)
-	if err != nil {
-		return err
-	}
-
-	_, err = driver.Exec(c.App.Name, []string{"chown", "app:app", filename}, "", []string{}, false)
-	if err != nil {
-		return err
-	}
-
-	_, err = driver.Exec(c.App.Name, []string{"chmod", mode, filename}, "", []string{}, false)
-	return err
-}
-
-// SetTechnology prepares container for given technology (Python, PHP, Node.js, ...)
-// Where tech can be php, python or node and latest available version is used.
-func (c *Container) SetTechnology(tech string) error {
-	driver := c.getDriver()
-
-	_, err := driver.Exec(c.App.Name, []string{"su", "app", "-c", "rosti " + tech}, "", []string{}, false)
-	return err
-}
-
-// GetProcessList returns list of processes managed by supervisor.
-func (c *Container) GetProcessList() (*[]Process, error) {
-	driver := c.getDriver()
-
-	processes := []Process{}
-
-	stdouterr, err := driver.Exec(c.App.Name, []string{"supervisorctl", "status"}, "", []string{}, true)
-	if err != nil {
-		return &processes, nil
-	}
-
-	trimmed := strings.TrimSpace(string(*stdouterr))
-	for _, row := range strings.Split(trimmed, "\n") {
-		fields := strings.Fields(row)
-		if len(fields) > 2 {
-			processes = append(processes, Process{
-				Name:  fields[0],
-				State: fields[1],
-			})
-		}
-	}
-
-	return &processes, nil
-}

glue/main.go

@@ -0,0 +1,975 @@
+package glue
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"path"
+	"strings"
+	"time"
+
+	"github.com/jinzhu/gorm"
+	"github.com/rosti-cz/node-api/apps"
+	"github.com/rosti-cz/node-api/containers"
+	docker "github.com/rosti-cz/node-api/containers"
+	"github.com/rosti-cz/node-api/detector"
+	"github.com/rosti-cz/node-api/node"
+)
+
+// Wait for the container a little bit longer
+const ENABLE_TECH_WAIT = 10
+
+// Processor separates logic of apps, containers, detector and node from handlers.
+// It defines common interface for both types of handlers, HTTP and the events.
+type Processor struct {
+	AppName           string
+	DB                *gorm.DB
+	SnapshotProcessor *apps.SnapshotProcessor
+	NodeProcessor     *node.Processor
+	WaitForAppLoops   uint // each loop is five seconds
+	DockerSock        string
+	BindIPHTTP        string
+	BindIPSSH         string
+	AppsPath          string
+}
+
+// Return prepared Container instance
+func (p *Processor) getContainer() (containers.Container, error) {
+	container := containers.Container{}
+
+	processor := p.getAppProcessor()
+	app, err := processor.Get(p.AppName)
+	if err != nil {
+		return container, err
+	}
+
+	container = docker.Container{
+		App:        &app,
+		DockerSock: p.DockerSock,
+		BindIPHTTP: p.BindIPHTTP,
+		BindIPSSH:  p.BindIPSSH,
+		AppsPath:   p.AppsPath,
+	}
+
+	return container, nil
+}
+
+// returns instance of getAppProcessor
+func (p *Processor) getAppProcessor() apps.AppsProcessor {
+	processor := apps.AppsProcessor{
+		DB: p.DB,
+	}
+	processor.Init()
+	return processor
+}
+
+// waits until app is ready
+func (p *Processor) waitForApp() error {
+	sleepFor := 5 * time.Second
+	loops := 6
+	if p.WaitForAppLoops != 0 {
+		loops = int(p.WaitForAppLoops)
+	}
+
+	statsProcessor := StatsProcessor{
+		DB:         p.DB,
+		DockerSock: p.DockerSock,
+		BindIPHTTP: p.BindIPHTTP,
+		BindIPSSH:  p.BindIPSSH,
+		AppsPath:   p.AppsPath,
+	}
+
+	for i := 0; i < loops; i++ {
+		err := statsProcessor.UpdateState(p.AppName)
+		if err != nil {
+			time.Sleep(sleepFor)
+			continue
+		}
+
+		container, err := p.getContainer()
+		if err != nil {
+			return err
+		}
+
+		status, err := container.Status()
+		if err != nil {
+			return err
+		}
+		if status.Status == "running" {
+			return nil
+		}
+
+		time.Sleep(sleepFor)
+	}
+
+	return errors.New("timeout reached")
+}
+
+// List returns list of apps
+// noUpdate skips stats gathering to speed things up
+func (p *Processor) List(noUpdate bool) (apps.Apps, error) {
+	appList := apps.Apps{}
+
+	if !noUpdate {
+		statsProcessor := StatsProcessor{
+			DB:         p.DB,
+			DockerSock: p.DockerSock,
+			BindIPHTTP: p.BindIPHTTP,
+			BindIPSSH:  p.BindIPSSH,
+			AppsPath:   p.AppsPath,
+		}
+
+		err := statsProcessor.GatherStates()
+		if err != nil {
+			return appList, fmt.Errorf("backend error: %v", err)
+		}
+	}
+
+	processor := p.getAppProcessor()
+	appList, err := processor.List()
+
+	if err != nil {
+		return appList, fmt.Errorf("backend error: %v", err)
+	}
+
+	return appList, err
+}
+
+// Get returns one app
+func (p *Processor) Get(noUpdate bool) (apps.App, error) {
+	app := apps.App{}
+
+	if !noUpdate {
+		statsProcessor := StatsProcessor{
+			DB:         p.DB,
+			DockerSock: p.DockerSock,
+			BindIPHTTP: p.BindIPHTTP,
+			BindIPSSH:  p.BindIPSSH,
+			AppsPath:   p.AppsPath,
+		}
+
+		err := statsProcessor.UpdateState(p.AppName)
+		if err != nil {
+			return app, err
+		}
+	}
+
+	processor := p.getAppProcessor()
+	app, err := processor.Get(p.AppName)
+	if err != nil {
+		return app, err
+	}
+
+	// Gather runtime info about the container
+	if !noUpdate {
+		container := docker.Container{
+			App:        &app,
+			DockerSock: p.DockerSock,
+			BindIPHTTP: p.BindIPHTTP,
+			BindIPSSH:  p.BindIPSSH,
+			AppsPath:   p.AppsPath,
+		}
+
+		isPasswordSet, err := container.IsPasswordSet()
+		if err != nil {
+			return app, err
+		}
+		app.IsPasswordSet = isPasswordSet
+
+		status, err := container.Status()
+		if err != nil {
+			return app, err
+		}
+		if status.Status == "running" {
+			var err error
+			app.Techs, err = container.GetTechs()
+			if err != nil {
+				return app, err
+			}
+			app.PrimaryTech, err = container.GetPrimaryTech()
+			if err != nil {
+				return app, err
+			}
+
+			processList, err := container.GetSystemProcesses()
+			if err != nil {
+				return app, err
+			}
+
+			flags, err := detector.Check(processList)
+			if err != nil {
+				return app, err
+			}
+			app.Flags = flags.String()
+		}
+	}
+
+	return app, nil
+}
+
+// Takes URL with an tar archive and prepares container's volume from it.
+func (p *Processor) volumeFromURL(url string, container *docker.Container) error {
+	// Validation, check if url ends with tar.zst
+	if !strings.HasSuffix(url, ".tar.zst") {
+		return fmt.Errorf("archive has to end with .tar.zst")
+	}
+
+	volumePath := container.VolumeHostPath()
+
+	// Prepare volume path
+	err := os.MkdirAll(volumePath, 0755)
+	if err != nil {
+		return fmt.Errorf("failed to create volume path: %v", err)
+	}
+
+	// Download the archive
+	archivePath := path.Join(volumePath, "archive.tar.zst")
+
+	log.Printf("%s: downloading archive from %s\n", container.App.Name, url)
+	f, err := os.Create(archivePath)
+	if err != nil {
+		return fmt.Errorf("failed to create archive file: %v", err)
+	}
+	defer f.Close()
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return fmt.Errorf("failed to download archive: %v", err)
+	}
+	defer resp.Body.Close()
+
+	n, err := io.Copy(f, resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to download archive: %v", err)
+	}
+	log.Printf("downloaded %d bytes\n", n)
+
+	// Extract the archive
+	log.Printf("%s: extracting archive\n", container.App.Name)
+
+	// Call tar xf archive.tar.zst -C /volume
+	cmd := exec.Command("tar", "-xf", archivePath, "-C", volumePath)
+	err = cmd.Run()
+	if err != nil {
+		log.Printf("%s: failed to extract archive: %v", container.App.Name, err)
+		return err
+	}
+
+	// Remove archive
+	log.Printf("%s: removing archive\n", container.App.Name)
+	err = os.Remove(volumePath + "/archive.tar.zst")
+	if err != nil {
+		return fmt.Errorf("failed to remove archive: %v", err)
+	}
+
+	log.Printf("%s: volume preparing done\n", container.App.Name)
+
+	return nil
+}
+
+// Create creates a single app in the system
+func (p *Processor) Create(appTemplate apps.App) error {
+	if appTemplate.EnvRaw == nil {
+		appTemplate.EnvRaw = make(map[string]interface{})
+	}
+
+	err := p.Register(appTemplate)
+	if err != nil {
+		return err
+	}
+
+	container := docker.Container{
+		App:        &appTemplate,
+		DockerSock: p.DockerSock,
+		BindIPHTTP: p.BindIPHTTP,
+		BindIPSSH:  p.BindIPSSH,
+		AppsPath:   p.AppsPath,
+	}
+
+	if len(appTemplate.Snapshot) > 0 && len(appTemplate.Setup.ArchiveURL) > 0 {
+		return fmt.Errorf("snapshot and archive_url cannot be used together")
+	}
+
+	if len(appTemplate.Setup.ArchiveURL) > 0 {
+		err = p.volumeFromURL(appTemplate.Setup.ArchiveURL, &container)
+		if err != nil {
+			return fmt.Errorf("failed to prepare volume: %v", err)
+		}
+	}
+
+	err = container.Create()
+	if err != nil {
+		return err
+	}
+
+	// Restore from snapshot if it's noted in the request
+	if len(appTemplate.Snapshot) > 0 {
+		log.Printf("App %s is going to be created from %s snapshot\n", appTemplate.Name, appTemplate.Snapshot)
+
+		// Restore the data
+		err = p.SnapshotProcessor.RestoreSnapshot(appTemplate.Snapshot, appTemplate.Name)
+		if err != nil {
+			return fmt.Errorf("failed to restore snapshot: %v", err)
+		}
+	}
+
+	err = container.Start()
+	if err != nil {
+		return fmt.Errorf("failed to start container: %v", err)
+	}
+
+	// Wait for the app to be created
+	err = p.waitForApp()
+	if err != nil {
+		return fmt.Errorf("failed to wait for app: %v", err)
+	}
+	time.Sleep(5 * time.Second) // We wait for a little bit longer to make sure the container is fully started
+
+	// Setup SSH keys if it's noted in the request
+	log.Println("Checking if SSH key is required")
+	if len(appTemplate.Setup.SSHKeys) > 0 && len(appTemplate.Snapshot) == 0 {
+		log.Println("Setting up SSH keys")
+		err = p.UpdateKeys(appTemplate.Setup.SSHKeys)
+		if err != nil {
+			return fmt.Errorf("failed to update keys: %v", err)
+		}
+	}
+
+	// Setup technology if it's noted in the request
+	if len(appTemplate.Setup.Tech) > 0 && len(appTemplate.Snapshot) == 0 {
+		err = p.EnableTech(appTemplate.Setup.Tech, appTemplate.Setup.TechVersion)
+		if err != nil {
+			return fmt.Errorf("failed to enable tech: %v", err)
+		}
+	}
+
+	// Set password if it's noted in the request
+	if len(appTemplate.Setup.Password) > 0 && len(appTemplate.Snapshot) == 0 {
+		err = p.SetPassword(appTemplate.Setup.Password)
+		if err != nil {
+			return fmt.Errorf("failed to set password: %v", err)
+		}
+	}
+
+	// Changes port of the app hosted inside the container
+	if appTemplate.AppPort != 0 && len(appTemplate.Snapshot) == 0 {
+		err = container.SetAppPort(appTemplate.AppPort)
+		if err != nil {
+			return fmt.Errorf("failed to change app port to %d: %v", appTemplate.AppPort, err)
+		}
+
+		err = container.RestartProcess("nginx")
+		if err != nil {
+			return fmt.Errorf("failed to restart nginx: %v", err)
+		}
+	}
+
+	return nil
+}
+
+// Register registers app without creating a container for it
+// Returns app name and an error
+func (p *Processor) Register(appTemplate apps.App) error {
+	processor := p.getAppProcessor()
+	err := processor.New(appTemplate.Name, appTemplate.SSHPort, appTemplate.HTTPPort, appTemplate.Image, appTemplate.CPU, appTemplate.Memory)
+	if err != nil {
+		if validationError, ok := err.(apps.ValidationError); ok {
+			return fmt.Errorf("validation error: %v", validationError.Error())
+		}
+		return err
+	}
+
+	return nil
+}
+
+// Update updates application
+func (p *Processor) Update(appTemplate apps.App) error {
+	if appTemplate.EnvRaw == nil {
+		appTemplate.EnvRaw = make(map[string]interface{})
+	}
+
+	processor := p.getAppProcessor()
+	app, err := processor.Update(appTemplate.Name, appTemplate.SSHPort, appTemplate.HTTPPort, appTemplate.Image, appTemplate.CPU, appTemplate.Memory, appTemplate.GetEnv())
+	if err != nil {
+		if validationError, ok := err.(apps.ValidationError); ok {
+			return fmt.Errorf("validation error: %v", validationError.Error())
+		}
+		return err
+	}
+
+	container := docker.Container{
+		App:        app,
+		DockerSock: p.DockerSock,
+		BindIPHTTP: p.BindIPHTTP,
+		BindIPSSH:  p.BindIPSSH,
+		AppsPath:   p.AppsPath,
+	}
+
+	err = container.Destroy()
+	if err != nil && err.Error() == "no container found" {
+		// We don't care if the container didn't exist anyway
+		err = nil
+	}
+	if err != nil {
+		return err
+	}
+
+	err = container.Create()
+	if err != nil {
+		return err
+	}
+
+	err = container.Start()
+	if err != nil {
+		return err
+	}
+
+	// Setup technology if it's noted in the request
+	if len(appTemplate.Setup.Tech) > 0 {
+		err := p.waitForApp()
+		if err != nil {
+			return err
+		}
+
+		err = p.EnableTech(appTemplate.Setup.Tech, appTemplate.Setup.TechVersion)
+		if err != nil {
+			return fmt.Errorf("failed to enable tech: %v", err)
+		}
+
+		// We restart the container so everything can use the new tech
+		err = container.Restart()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Delete removes app from the system
+func (p *Processor) Delete() error {
+	processor := p.getAppProcessor()
+	container, err := p.getContainer()
+	if err != nil {
+		log.Println("ERROR: delete app:", err.Error())
+		return err
+	}
+
+	status, err := container.Status()
+	if err != nil {
+		return err
+	}
+
+	if status.Status != "no-container" {
+		// We stop the container first
+		err = container.Stop()
+		if err != nil {
+			return err
+		}
+
+		// Then delete it
+		err = container.Delete()
+		if err != nil {
+			return err
+		}
+	}
+
+	err = processor.Delete(p.AppName)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Stop stops app
+func (p *Processor) Stop() error {
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	status, err := container.Status()
+	if err != nil {
+		return err
+	}
+
+	// Stop the container only when it exists
+	if status.Status != "no-container" {
+		err = container.Stop()
+		if err != nil {
+			return err
+		}
+
+		err = container.Destroy()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Start starts app
+func (p *Processor) Start() error {
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	status, err := container.Status()
+	if err != nil {
+		return err
+	}
+	if status.Status == "no-container" {
+		err = container.Create()
+		if err != nil {
+			return err
+		}
+	}
+
+	err = container.Start()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Restart restarts app
+func (p *Processor) Restart() error {
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	err = container.Restart()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// UpdateKeys uploads SSH keys into the container
+// keys parameters is just a string, one key per line
+func (p *Processor) UpdateKeys(keys string) error {
+	err := p.waitForApp()
+	if err != nil {
+		return err
+	}
+
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	log.Println("Storing keys into " + sshPubKeysLocation)
+	err = container.AppendFile(sshPubKeysLocation, keys+"\n", "0600")
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// SetPassword sets up a new password to access the SSH user
+func (p *Processor) SetPassword(password string) error {
+	err := p.waitForApp()
+	if err != nil {
+		return err
+	}
+
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	err = container.SetPassword(password)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// ClearPassword removes password from the SSH user
+func (p *Processor) ClearPassword() error {
+	err := p.waitForApp()
+	if err != nil {
+		return err
+	}
+
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	err = container.ClearPassword()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Generate SSH key and adds it into authorized_keys
+// These pair of keys is used for deployment.
+// Returns private key, pubkey and error.
+// Keys are returned every time even if it was already generated
+func (p *Processor) GenerateDeploySSHKeys() (string, string, error) {
+	container, err := p.getContainer()
+	if err != nil {
+		return "", "", err
+	}
+
+	// If the container is not running we skip this code
+	status, err := container.Status()
+	if err != nil {
+		return "", "", err
+	}
+	if status.Status != "running" {
+		return "", "", nil
+	}
+
+	created, err := container.GenerateDeploySSHKeys()
+	if err != nil {
+		return "", "", err
+	}
+
+	privateKey, pubKey, err := container.GetDeploySSHKeys()
+	if err != nil {
+		return "", "", err
+	}
+
+	if created {
+		err = container.AppendFile(sshPubKeysLocation, pubKey+"\n", "0600")
+		if err != nil {
+			return "", "", err
+		}
+	}
+
+	return privateKey, pubKey, nil
+}
+
+// Return SSH host key without hostname (first part of the line)
+func (p *Processor) GetHostKey() (string, error) {
+	container, err := p.getContainer()
+	if err != nil {
+		return "", err
+	}
+
+	// If the container is not running we skip this code
+	status, err := container.Status()
+	if err != nil {
+		return "", err
+	}
+	if status.Status != "running" {
+		return "", nil
+	}
+
+	hostKey, err := container.GetHostKey()
+	if err != nil {
+		return "", err
+	}
+
+	return hostKey, nil
+}
+
+// Save meta data about app into a file
+func (p *Processor) SaveMetadata(metadata string) error {
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	volumePath := container.VolumeHostPath()
+
+	f, err := os.Create(path.Join(volumePath, ".metadata.json"))
+	if err != nil {
+		return err
+	}
+
+	defer f.Close()
+	_, err = f.Write([]byte(metadata))
+
+	if err != nil {
+		return err
+	}
+
+	// Set permissions
+	err = os.Chmod(path.Join(volumePath, ".metadata.json"), 0600)
+	if err != nil {
+		return err
+	}
+
+	// Set owner
+	err = os.Chown(path.Join(volumePath, ".metadata.json"), ownerUID, ownerGID)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Processes returns list of supervisord processes
+func (p *Processor) Processes() ([]docker.Process, error) {
+	container, err := p.getContainer()
+	if err != nil {
+		return nil, err
+	}
+
+	processes, err := container.GetProcessList()
+	if err != nil {
+		return nil, err
+	}
+
+	return processes, nil
+}
+
+// EnableTech sets up runtime for new tech or new version a tech
+func (p *Processor) EnableTech(service, version string) error {
+	err := p.waitForApp()
+	if err != nil {
+		return err
+	}
+
+	time.Sleep(ENABLE_TECH_WAIT * time.Second)
+
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	err = container.SetTechnology(service, version)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Rebuild recreates container for app
+func (p *Processor) Rebuild() error {
+	container, err := p.getContainer()
+	if err != nil {
+		return err
+	}
+
+	err = container.Destroy()
+	if err != nil && !strings.Contains(err.Error(), "no container found") {
+		return err
+	}
+
+	err = container.Create()
+	if err != nil {
+		return err
+	}
+
+	err = container.Start()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// AddLabel adds a label to the app
+func (p *Processor) AddLabel(label string) error {
+	appProcessor := p.getAppProcessor()
+	err := appProcessor.AddLabel(p.AppName, label)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// RemoveLabel removes a label from the app
+func (p *Processor) RemoveLabel(label string) error {
+	appProcessor := p.getAppProcessor()
+	err := appProcessor.RemoveLabel(p.AppName, label)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// GetNote returns node's info
+func (p *Processor) GetNode() (*node.Node, error) {
+	node, err := p.NodeProcessor.GetNodeInfo()
+	if err != nil {
+		return nil, err
+	}
+
+	return node, nil
+}
+
+// CreateSnapshot creates a snapshot of given app
+func (p *Processor) CreateSnapshot(labels []string) error {
+	_, err := p.SnapshotProcessor.CreateSnapshot(p.AppName, labels)
+	return err
+}
+
+// RestoreFromSnapshot restores app from given snapshot
+func (p *Processor) RestoreFromSnapshot(snapshotName string) error {
+	container, err := p.getContainer()
+
+	// Stop the container
+	status, err := container.Status()
+	if err != nil {
+		return err
+	}
+
+	// Stop the container only when it exists
+	if status.Status != "no-container" {
+		err = container.Stop()
+		if err != nil {
+			return err
+		}
+	}
+
+	// Restore the data
+	err = p.SnapshotProcessor.RestoreSnapshot(snapshotName, p.AppName)
+	if err != nil {
+		return err
+	}
+
+	// Start the container
+	status, err = container.Status()
+	if err != nil {
+		return err
+	}
+	if status.Status == "no-container" {
+		err = container.Create()
+		if err != nil {
+			return err
+		}
+	}
+
+	err = container.Start()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// ListSnapshots returns list of snapshots
+func (p *Processor) ListSnapshots() (SnapshotsMetadata, error) {
+	snapshots, err := p.SnapshotProcessor.ListAppSnapshots(p.AppName)
+	if err != nil {
+		return SnapshotsMetadata{}, err
+	}
+
+	var output SnapshotsMetadata
+	for _, snapshot := range snapshots {
+		output = append(output, SnapshotMetadata{
+			Key:      snapshot.KeyName(p.SnapshotProcessor.IndexLabel),
+			Metadata: snapshot,
+		})
+	}
+
+	return output, nil
+}
+
+// ListAppsSnapshots returns list of snapshots for given app list
+func (p *Processor) ListAppsSnapshots(appNames []string) (SnapshotsMetadata, error) {
+	snapshots, err := p.SnapshotProcessor.ListAppsSnapshots(appNames)
+	if err != nil {
+		return SnapshotsMetadata{}, err
+	}
+
+	var output SnapshotsMetadata
+	for _, snapshot := range snapshots {
+		output = append(output, SnapshotMetadata{
+			Key:      snapshot.KeyName(p.SnapshotProcessor.IndexLabel),
+			Metadata: snapshot,
+		})
+	}
+
+	return output, nil
+}
+
+// ListSnapshotsByLabel returns list of snapshots by given label
+func (p *Processor) ListSnapshotsByLabel(label string) (SnapshotsMetadata, error) {
+	snapshots, err := p.SnapshotProcessor.ListAppsSnapshotsByLabel(label)
+	if err != nil {
+		return SnapshotsMetadata{}, err
+	}
+
+	var output SnapshotsMetadata
+	for _, snapshot := range snapshots {
+		output = append(output, SnapshotMetadata{
+			Key:      snapshot.KeyName(p.SnapshotProcessor.IndexLabel),
+			Metadata: snapshot,
+		})
+	}
+
+	return output, nil
+}
+
+// GetSnapshot returns info about a single snapshot
+func (p *Processor) GetSnapshot(snapshotName string) (SnapshotMetadata, error) {
+	snapshot, err := p.SnapshotProcessor.GetSnapshot(snapshotName)
+	if err != nil {
+		return SnapshotMetadata{}, err
+	}
+	output := SnapshotMetadata{
+		Key:      snapshot.KeyName(p.SnapshotProcessor.IndexLabel),
+		Metadata: snapshot,
+	}
+
+	return output, nil
+
+}
+
+// GetSnapshotDownloadLink return download link for a snapshot
+func (p *Processor) GetSnapshotDownloadLink(snapshotName string) (string, error) {
+	link, err := p.SnapshotProcessor.GetDownloadLink(snapshotName)
+	if err != nil {
+		return "", err
+	}
+
+	return link, nil
+}
+
+// DeleteSnapshot deletes a snapshot
+func (p *Processor) DeleteSnapshot(snapshotName string) error {
+	err := p.SnapshotProcessor.DeleteSnapshot(snapshotName)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// DeleteAppSnapshots deletes all snapshot of given app
+func (p *Processor) DeleteAppSnapshots() error {
+	err := p.SnapshotProcessor.DeleteAppSnapshots(p.AppName)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Returns active technology in the app
+func (p *Processor) GetActiveTech() (*containers.TechInfo, error) {
+	container, err := p.getContainer()
+	if err != nil {
+		return nil, err
+	}
+
+	tech, err := container.GetActiveTech()
+	if err != nil {
+		return tech, err
+	}
+
+	return tech, nil
+}

glue/main_test.go

@@ -0,0 +1,244 @@
+package glue
+
+import (
+	"log"
+	"os"
+	"path"
+	"testing"
+
+	"github.com/jinzhu/gorm"
+	"github.com/rosti-cz/node-api/apps"
+	"github.com/stretchr/testify/assert"
+
+	// This is line from GORM documentation that imports database dialect
+	_ "github.com/jinzhu/gorm/dialects/sqlite"
+)
+
+const testDBPath = "file::memory:?cache=shared"
+
+var testAppTemplate apps.App = apps.App{
+	Name:     "test_1234",
+	SSHPort:  10000,
+	HTTPPort: 10001,
+	Image:    "harbor.hq.rosti.cz/public/runtime:2022.01-1",
+	CPU:      50,
+	Memory:   256,
+}
+
+func getPWD() string {
+	dir, err := os.Getwd()
+	if err != nil {
+		log.Fatal(err)
+	}
+	return dir
+}
+
+func testDB() *gorm.DB {
+	db, err := gorm.Open("sqlite3", testDBPath)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	return db
+}
+
+func getTestDockerSock() string {
+	dockerSocket := os.Getenv("DOCKER_SOCKET")
+	if dockerSocket == "" {
+		return "unix:///run/user/1000/podman/podman.sock"
+	}
+	return dockerSocket
+}
+
+var processor Processor
+
+func TestMain(m *testing.M) {
+	// This processor is used to test all methods
+	processor = Processor{
+		AppName: testAppTemplate.Name,
+		DB:      testDB(),
+		// SnapshotProcessor *apps.SnapshotProcessor
+		DockerSock: getTestDockerSock(),
+		BindIPHTTP: "127.0.0.1",
+		BindIPSSH:  "127.0.0.1",
+		AppsPath:   path.Join(getPWD(), "tmp/apps"),
+	}
+
+	exitVal := m.Run()
+
+	os.Exit(exitVal)
+}
+
+func TestProcessorCreate(t *testing.T) {
+	err := processor.Create(testAppTemplate)
+	assert.Nil(t, err)
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+// func TestProcessorList(t *testing.T) {
+
+// }
+
+func TestProcessorGet(t *testing.T) {
+	err := processor.Create(testAppTemplate)
+	assert.Nil(t, err)
+
+	app, err := processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, "running", app.State)
+
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+func TestProcessorRegister(t *testing.T) {
+	err := processor.Register(testAppTemplate)
+	assert.Nil(t, err)
+
+	app, err := processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, "no-container", app.State)
+
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+func TestProcessorUpdate(t *testing.T) {
+	err := processor.Create(testAppTemplate)
+	assert.Nil(t, err)
+
+	app, err := processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, "running", app.State)
+
+	updatedTemplate := testAppTemplate
+	updatedTemplate.Memory = 1024
+
+	err = processor.Update(updatedTemplate)
+	assert.Nil(t, err)
+	assert.Equal(t, "running", app.State)
+
+	app, err = processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, 1024, app.Memory)
+
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+func TestProcessorDelete(t *testing.T) {
+	err := processor.Create(testAppTemplate)
+	assert.Nil(t, err)
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+func TestProcessorStop(t *testing.T) {
+	err := processor.Create(testAppTemplate)
+	assert.Nil(t, err)
+
+	err = processor.Stop()
+	assert.Nil(t, err)
+
+	app, err := processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, "exited", app.State)
+
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+func TestProcessorStart(t *testing.T) {
+	err := processor.Create(testAppTemplate)
+	assert.Nil(t, err)
+
+	err = processor.Stop()
+	assert.Nil(t, err)
+
+	app, err := processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, "exited", app.State)
+
+	err = processor.Start()
+	assert.Nil(t, err)
+
+	app, err = processor.Get(false)
+	assert.Nil(t, err)
+	assert.Equal(t, "running", app.State)
+
+	processor.Delete()
+	assert.Nil(t, err)
+}
+
+// func TestProcessorRestart(t *testing.T) {
+
+// }
+
+// func TestProcessorUpdateKeys(t *testing.T) {
+
+// }
+
+// func TestProcessorSetPassword(t *testing.T) {
+
+// }
+
+// func TestProcessorProcesses(t *testing.T) {
+
+// }
+
+// func TestProcessorEnableTech(t *testing.T) {
+
+// }
+
+// func TestProcessorRebuild(t *testing.T) {
+
+// }
+
+// func TestProcessorAddLabel(t *testing.T) {
+
+// }
+
+// func TestProcessorRemoveLabel(t *testing.T) {
+
+// }
+
+// func TestProcessorGetNode(t *testing.T) {
+
+// }
+
+// func TestProcessorCreateSnapshot(t *testing.T) {
+
+// }
+
+// func TestProcessorRestoreFromSnapshot(t *testing.T) {
+
+// }
+
+// func TestProcessorListSnapshots(t *testing.T) {
+
+// }
+
+// func TestProcessorListAppsSnapshots(t *testing.T) {
+
+// }
+
+// func TestProcessorListSnapshotsByLabel(t *testing.T) {
+
+// }
+
+// func TestProcessorGetSnapshot(t *testing.T) {
+
+// }
+
+// func TestProcessorGetSnapshotDownloadLink(t *testing.T) {
+
+// }
+
+// func TestProcessorDeleteSnapshot(t *testing.T) {
+
+// }
+
+// func TestProcessorDeleteAppSnapshots(t *testing.T) {
+
+// }

glue/stats.go

@@ -0,0 +1,132 @@
+package glue
+
+import (
+	"log"
+
+	"github.com/getsentry/sentry-go"
+	"github.com/jinzhu/gorm"
+	"github.com/rosti-cz/node-api/apps"
+	docker "github.com/rosti-cz/node-api/containers"
+)
+
+// StatsProcessor covers all methods that are needed
+// to gather information about application containers.
+type StatsProcessor struct {
+	DB         *gorm.DB
+	DockerSock string
+	BindIPHTTP string
+	BindIPSSH  string
+	AppsPath   string
+}
+
+// returns instance of getAppProcessor
+func (s *StatsProcessor) getAppProcessor() apps.AppsProcessor {
+	processor := apps.AppsProcessor{
+		DB: s.DB,
+	}
+	processor.Init()
+	return processor
+}
+
+// updateUsage updates various resource usage of the container/app in the database
+func (s *StatsProcessor) UpdateUsage(name string) error {
+	processor := s.getAppProcessor()
+
+	app, err := processor.Get(name)
+	if err != nil {
+		return err
+	}
+
+	container := docker.Container{
+		App:        &app,
+		DockerSock: s.DockerSock,
+		BindIPHTTP: s.BindIPHTTP,
+		BindIPSSH:  s.BindIPSSH,
+		AppsPath:   s.AppsPath,
+	}
+
+	state, err := container.GetState()
+	if err != nil {
+		return err
+	}
+
+	err = processor.UpdateResources(
+		name,
+		state.State,
+		state.OOMKilled,
+		state.CPUUsage,
+		state.MemoryUsage,
+		state.DiskUsageBytes,
+		state.DiskUsageInodes,
+		state.Flags,
+		state.IsPasswordSet,
+	)
+
+	return err
+}
+
+// Updates only container's state. Check current status of the container and saves it into the database.
+func (s *StatsProcessor) UpdateState(name string) error {
+	processor := s.getAppProcessor()
+	app, err := processor.Get(name)
+	if err != nil {
+		return err
+	}
+
+	container := docker.Container{
+		App:        &app,
+		DockerSock: s.DockerSock,
+		BindIPHTTP: s.BindIPHTTP,
+		BindIPSSH:  s.BindIPSSH,
+		AppsPath:   s.AppsPath,
+	}
+	state, err := container.Status()
+	if err != nil {
+		return err
+	}
+
+	err = processor.UpdateState(
+		app.Name,
+		state.Status,
+		state.OOMKilled,
+	)
+	return err
+}
+
+// gatherStats loops over all applications and calls updateUsage to write various metric into the database.
+func (s *StatsProcessor) GatherStats() error {
+	processor := s.getAppProcessor()
+	appList, err := processor.List()
+	if err != nil {
+		return err
+	}
+
+	for _, app := range appList {
+		err := s.UpdateUsage(app.Name)
+		if err != nil {
+			sentry.CaptureException(err)
+			log.Println("STATS ERROR:", err.Error())
+		}
+	}
+
+	return nil
+}
+
+// gatherStates loops over all apps and updates their container state
+func (s *StatsProcessor) GatherStates() error {
+	processor := s.getAppProcessor()
+	appList, err := processor.List()
+	if err != nil {
+		return err
+	}
+
+	for _, app := range appList {
+		err := s.UpdateState(app.Name)
+		if err != nil {
+			sentry.CaptureException(err)
+			log.Println("STATE ERROR:", err.Error())
+		}
+	}
+
+	return nil
+}

glue/types.go

@@ -0,0 +1,18 @@
+package glue
+
+import "github.com/rosti-cz/node-api/apps"
+
+const ownerUID = 1000
+const ownerGID = 1000
+
+// Path where authorized keys are
+const sshPubKeysLocation = "/srv/.ssh/authorized_keys"
+
+// SnapshotMetadata is snapshot structure encapsulation that combines key and metadata about the snapshot
+type SnapshotMetadata struct {
+	Key      string        `json:"key"`
+	Metadata apps.Snapshot `json:"metadata"`
+}
+
+// SnapshotsMetadata is returned by handlers
+type SnapshotsMetadata []SnapshotMetadata

go.mod

@@ -3,26 +3,31 @@ module github.com/rosti-cz/node-api
 go 1.14
 
 require (
-	github.com/Microsoft/go-winio v0.4.18 // indirect
-	github.com/StackExchange/wmi v0.0.0-20210224194228-fe8f1750fd46 // indirect
-	github.com/docker/distribution v2.7.1+incompatible // indirect
-	github.com/docker/docker v1.13.1
+	github.com/Microsoft/go-winio v0.6.1 // indirect
+	github.com/StackExchange/wmi v1.2.1 // indirect
+	github.com/containerd/log v0.1.0 // indirect
+	github.com/distribution/reference v0.5.0 // indirect
+	github.com/docker/docker v25.0.3+incompatible
 	github.com/docker/go-connections v0.4.0
-	github.com/docker/go-units v0.4.0 // indirect
-	github.com/go-ole/go-ole v1.2.5 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/getsentry/sentry-go v0.26.0
 	github.com/gobuffalo/packr v1.30.1
-	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/jinzhu/gorm v1.9.14
 	github.com/kelseyhightower/envconfig v1.4.0
-	github.com/labstack/echo v3.3.10+incompatible
-	github.com/labstack/gommon v0.3.0 // indirect
-	github.com/mholt/archiver/v3 v3.5.0
+	github.com/labstack/echo/v4 v4.10.0
 	github.com/minio/minio-go/v7 v7.0.14
-	github.com/nats-io/nats-server/v2 v2.6.1 // indirect
-	github.com/nats-io/nats.go v1.12.3
-	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/moby/term v0.5.0 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/nats-io/nats.go v1.23.0
+	github.com/opencontainers/image-spec v1.0.2
 	github.com/pkg/errors v0.9.1
+	github.com/satori/go.uuid v1.2.0
 	github.com/shirou/gopsutil v2.20.6+incompatible
-	github.com/stretchr/testify v1.4.0
-	google.golang.org/protobuf v1.27.1 // indirect
+	github.com/stretchr/testify v1.8.4
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.49.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.24.0 // indirect
+	gorm.io/driver/mysql v1.4.7
+	gorm.io/gorm v1.25.2-0.20230530020048-26663ab9bf55
+	gotest.tools/v3 v3.5.1 // indirect
 )

handlers.go

@@ -2,16 +2,16 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
+	"strings"
 
-	"github.com/labstack/echo"
+	"github.com/labstack/echo/v4"
 	"github.com/rosti-cz/node-api/apps"
 	"github.com/rosti-cz/node-api/common"
-	"github.com/rosti-cz/node-api/docker"
-	"github.com/rosti-cz/node-api/node"
+	"github.com/rosti-cz/node-api/glue"
 )
 
 func homeHandler(c echo.Context) error {
@@ -21,16 +21,15 @@ func homeHandler(c echo.Context) error {
 }
 
 func listAppsHandler(c echo.Context) error {
-	err := gatherStates()
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	processor := glue.Processor{
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	applications, err := processor.List()
-
+	applications, err := processor.List(false)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -41,16 +40,17 @@ func listAppsHandler(c echo.Context) error {
 // Returns one app
 func getAppHandler(c echo.Context) error {
 	name := c.Param("name")
+	fast := c.Param("fast")
 
-	err := updateState(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	app, err := processor.Get(name)
+	app, err := processor.Get(fast == "1")
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -63,35 +63,33 @@ func getAppHandler(c echo.Context) error {
 func createAppHandler(c echo.Context) error {
 	registerOnly := c.QueryParam("register_only") == "1"
 
-	app := apps.App{}
-	err := c.Bind(&app)
+	appTemplate := apps.App{}
+	err := c.Bind(&appTemplate)
 	if err != nil {
 		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	err = processor.New(app.Name, app.SSHPort, app.HTTPPort, app.Image, app.CPU, app.Memory)
-	if err != nil {
-		if validationError, ok := err.(apps.ValidationError); ok {
-			return c.JSONPretty(http.StatusBadRequest, Message{Errors: validationError.Errors}, JSONIndent)
-		}
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	processor := glue.Processor{
+		AppName:    appTemplate.Name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
 
-	if !registerOnly {
-		container := docker.Container{
-			App: &app,
-		}
-
-		err = container.Create()
-		if err != nil {
+	if registerOnly {
+		err = processor.Register(appTemplate)
+		if err != nil && strings.Contains(err.Error(), "validation error") {
+			return c.JSONPretty(http.StatusBadRequest, Message{Errors: []string{err.Error()}}, JSONIndent)
+		} else if err != nil {
 			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 		}
-
-		err = container.Start()
-		if err != nil {
+	} else {
+		err = processor.Create(appTemplate)
+		if err != nil && strings.Contains(err.Error(), "validation error") {
+			return c.JSONPretty(http.StatusBadRequest, Message{Errors: []string{err.Error()}}, JSONIndent)
+		} else if err != nil {
 			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 		}
 	}
@@ -103,45 +101,24 @@ func createAppHandler(c echo.Context) error {
 func updateAppHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	app := apps.App{}
-	err := c.Bind(&app)
+	appTemplate := apps.App{}
+	err := c.Bind(&appTemplate)
 	if err != nil {
 		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	appPointer, err := processor.Update(name, app.SSHPort, app.HTTPPort, app.Image, app.CPU, app.Memory)
-	if err != nil {
-		if validationError, ok := err.(apps.ValidationError); ok {
-			return c.JSONPretty(http.StatusBadRequest, Message{Errors: validationError.Errors}, JSONIndent)
-		}
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	app = *appPointer
-
-	container := docker.Container{
-		App: &app,
-	}
-
-	err = container.Destroy()
-	if err != nil && err.Error() == "no container found" {
-		// We don't care if the container didn't exist anyway
-		err = nil
-	}
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	err = container.Create()
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	err = container.Start()
-	if err != nil {
+	err = processor.Update(appTemplate)
+	if err != nil && strings.Contains(err.Error(), "validation error") {
+		return c.JSONPretty(http.StatusBadRequest, Message{Errors: []string{err.Error()}}, JSONIndent)
+	} else if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
@@ -152,31 +129,19 @@ func updateAppHandler(c echo.Context) error {
 func stopAppHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
+	err := processor.Stop()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	container := docker.Container{
-		App: app,
-	}
-
-	status, err := container.Status()
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	// Stop the container only when it exists
-	if status != "no-container" {
-		err = container.Stop()
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
 	return c.JSON(http.StatusOK, Message{Message: "ok"})
 }
 
@@ -184,30 +149,15 @@ func stopAppHandler(c echo.Context) error {
 func startAppHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-
-	status, err := container.Status()
-	if err != nil {
-		return err
-	}
-	if status == "no-container" {
-		err = container.Create()
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	err = container.Start()
+	err := processor.Start()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -219,19 +169,15 @@ func startAppHandler(c echo.Context) error {
 func restartAppHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-
-	err = container.Restart()
+	err := processor.Restart()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -249,19 +195,35 @@ func setPasswordHandler(c echo.Context) error {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
+	err = processor.SetPassword(password.Password)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	container := docker.Container{
-		App: app,
-	}
+	return c.JSON(http.StatusOK, Message{Message: "ok"})
+}
 
-	err = container.SetPassword(password.Password)
+// Clear password for the app user in the container
+func clearPasswordHandler(c echo.Context) error {
+	name := c.Param("name")
+
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
+	}
+	err := processor.ClearPassword()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -273,24 +235,20 @@ func setPasswordHandler(c echo.Context) error {
 func setKeysHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	body, err := ioutil.ReadAll(c.Request().Body)
+	body, err := io.ReadAll(c.Request().Body)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-
-	err = container.SetFileContent(sshPubKeysLocation, string(body)+"\n", "0600")
+	err = processor.UpdateKeys(string(body) + "\n")
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -301,73 +259,26 @@ func setKeysHandler(c echo.Context) error {
 func setServicesHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	quickServices := &QuickServices{}
-	err := c.Bind(quickServices)
+	tech := &Technology{}
+	err := c.Bind(tech)
 	if err != nil {
 		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
+
+	err = processor.EnableTech(tech.Name, tech.Version)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	container := docker.Container{
-		App: app,
-	}
-
-	if quickServices.Python {
-		err = container.SetTechnology("python")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	if quickServices.PHP {
-		err = container.SetTechnology("php")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	if quickServices.Node {
-		err = container.SetTechnology("node")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	if quickServices.Ruby {
-		err = container.SetTechnology("ruby")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	if quickServices.Deno {
-		err = container.SetTechnology("deno")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	if quickServices.Memcached {
-		err = container.SetTechnology("memcached")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
-	if quickServices.Redis {
-		err = container.SetTechnology("redis")
-		if err != nil {
-			return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-		}
-	}
-
 	return c.JSON(http.StatusOK, Message{Message: "ok"})
 }
 
@@ -375,33 +286,15 @@ func setServicesHandler(c echo.Context) error {
 func rebuildAppHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-
-	err = container.Destroy()
-	if err != nil && err.Error() == "no container found" {
-		// We don't care if the container didn't exist anyway
-		err = nil
-	}
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	err = container.Create()
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	err = container.Start()
+	err := processor.Rebuild()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -419,10 +312,15 @@ func addLabelHandler(c echo.Context) error {
 		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	err = processor.AddLabel(name, label.Value)
+	err = processor.AddLabel(label.Value)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -440,10 +338,15 @@ func deleteLabelHandler(c echo.Context) error {
 		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	err = processor.RemoveLabel(name, label.Value)
+	err = processor.RemoveLabel(label.Value)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -456,36 +359,20 @@ func deleteLabelHandler(c echo.Context) error {
 func deleteAppHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	go func(app *apps.App) {
-		container := docker.Container{
-			App: app,
+	go func(name string) {
+		processor := glue.Processor{
+			AppName:    name,
+			DB:         common.GetDBConnection(),
+			DockerSock: config.DockerSocket,
+			BindIPHTTP: config.AppsBindIPHTTP,
+			BindIPSSH:  config.AppsBindIPSSH,
+			AppsPath:   config.AppsPath,
 		}
-
-		status, err := container.Status()
+		err := processor.Delete()
 		if err != nil {
-			log.Println("ERROR delete application problem: " + err.Error())
-
+			log.Printf("Deletion of application failed: %v", err)
 		}
-		if status != "no-container" {
-			err = container.Delete()
-			if err != nil {
-				log.Println("ERROR delete application problem: " + err.Error())
-			}
-		}
-
-		err = processor.Delete(app.Name)
-		if err != nil {
-			log.Println("ERROR delete application problem: " + err.Error())
-		}
-	}(app)
+	}(name)
 
 	return c.JSON(http.StatusOK, Message{Message: "deleted"})
 }
@@ -495,9 +382,44 @@ func getOrphansHander(c echo.Context) error {
 	return c.JSON(http.StatusOK, []string{})
 }
 
+// Save metadata for the app
+func saveMetadataHandler(c echo.Context) error {
+	name := c.Param("name")
+
+	processor := glue.Processor{
+		AppName:           name,
+		DB:                common.GetDBConnection(),
+		SnapshotProcessor: &snapshotProcessor,
+		DockerSock:        config.DockerSocket,
+		BindIPHTTP:        config.AppsBindIPHTTP,
+		BindIPSSH:         config.AppsBindIPSSH,
+		AppsPath:          config.AppsPath,
+	}
+
+	body, err := io.ReadAll(c.Request().Body)
+	if err != nil {
+		return fmt.Errorf("error reading request body: %v", err)
+	}
+
+	err = processor.SaveMetadata(string(body))
+	if err != nil {
+		return fmt.Errorf("error while save metadata: %v", err.Error())
+	}
+
+	return nil
+}
+
 // Return info about the node including performance index
 func getNodeInfoHandler(c echo.Context) error {
-	node, err := node.GetNodeInfo()
+	processor := glue.Processor{
+		DB:            common.GetDBConnection(),
+		DockerSock:    config.DockerSocket,
+		BindIPHTTP:    config.AppsBindIPHTTP,
+		BindIPSSH:     config.AppsBindIPSSH,
+		AppsPath:      config.AppsPath,
+		NodeProcessor: &nodeProcessor,
+	}
+	node, err := processor.GetNode()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -509,19 +431,15 @@ func getNodeInfoHandler(c echo.Context) error {
 func getAppProcessesHandler(c echo.Context) error {
 	name := c.Param("name")
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	processor := glue.Processor{
+		AppName:    name,
+		DB:         common.GetDBConnection(),
+		DockerSock: config.DockerSocket,
+		BindIPHTTP: config.AppsBindIPHTTP,
+		BindIPSSH:  config.AppsBindIPSSH,
+		AppsPath:   config.AppsPath,
 	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-
-	processes, err := container.GetProcessList()
+	processes, err := processor.Processes()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -534,7 +452,15 @@ func metricsHandler(c echo.Context) error {
 	var metrics string
 
 	// Node indexes
-	node, err := node.GetNodeInfo()
+	processor := glue.Processor{
+		DB:            common.GetDBConnection(),
+		DockerSock:    config.DockerSocket,
+		BindIPHTTP:    config.AppsBindIPHTTP,
+		BindIPSSH:     config.AppsBindIPSSH,
+		AppsPath:      config.AppsPath,
+		NodeProcessor: &nodeProcessor,
+	}
+	node, err := processor.GetNode()
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
@@ -552,18 +478,135 @@ func metricsHandler(c echo.Context) error {
 	metrics += fmt.Sprintf("rosti_node_memory_index{hostname=\"%s\"} %f\n", hostname, node.MemoryIndex)
 	metrics += fmt.Sprintf("rosti_node_sold_memory{hostname=\"%s\"} %d\n", hostname, node.SoldMemory)
 
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
+	if elapsedMetric != -1 {
+		metrics += fmt.Sprintf("rosti_node_stats_time_elapsed{hostname=\"%s\"} %f\n", hostname, float64(elapsedMetric)/1000000000)
 	}
-	apps, err := processor.List()
+
+	apps, err := processor.List(true)
 	if err != nil {
 		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
 	}
 
-	for _, app := range *apps {
+	for _, app := range apps {
 		metrics += fmt.Sprintf("rosti_node_app_disk_usage_bytes{hostname=\"%s\", app=\"%s\"} %d\n", hostname, app.Name, app.DiskUsageBytes)
 		metrics += fmt.Sprintf("rosti_node_app_disk_usage_inodes{hostname=\"%s\", app=\"%s\"} %d\n", hostname, app.Name, app.DiskUsageInodes)
 	}
 
 	return c.String(http.StatusOK, metrics)
 }
+
+func CreateSnapshotHandler(c echo.Context) error {
+	name := c.Param("name")
+
+	body := createSnapshotBody{}
+	err := c.Bind(body)
+	if err != nil {
+		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	processor := glue.Processor{
+		AppName:           name,
+		DB:                common.GetDBConnection(),
+		SnapshotProcessor: &snapshotProcessor,
+		DockerSock:        config.DockerSocket,
+		BindIPHTTP:        config.AppsBindIPHTTP,
+		BindIPSSH:         config.AppsBindIPSSH,
+		AppsPath:          config.AppsPath,
+	}
+
+	err = processor.CreateSnapshot(body.Labels)
+	if err != nil {
+		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	return c.JSONPretty(http.StatusOK, Message{Message: "ok"}, JSONIndent)
+}
+
+func RestoreFromSnapshotHandler(c echo.Context) error {
+	name := c.Param("name")
+	snapshot := c.Param("snapshot")
+
+	processor := glue.Processor{
+		AppName:           name,
+		DB:                common.GetDBConnection(),
+		SnapshotProcessor: &snapshotProcessor,
+		DockerSock:        config.DockerSocket,
+		BindIPHTTP:        config.AppsBindIPHTTP,
+		BindIPSSH:         config.AppsBindIPSSH,
+		AppsPath:          config.AppsPath,
+	}
+
+	err := processor.RestoreFromSnapshot(snapshot)
+	if err != nil {
+		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	return c.JSONPretty(http.StatusOK, Message{Message: "ok"}, JSONIndent)
+}
+
+func ListSnapshotsHandler(c echo.Context) error {
+	name := c.Param("name")
+
+	processor := glue.Processor{
+		AppName:           name,
+		DB:                common.GetDBConnection(),
+		SnapshotProcessor: &snapshotProcessor,
+		DockerSock:        config.DockerSocket,
+		BindIPHTTP:        config.AppsBindIPHTTP,
+		BindIPSSH:         config.AppsBindIPSSH,
+		AppsPath:          config.AppsPath,
+	}
+
+	snapshots, err := processor.ListSnapshots()
+	if err != nil {
+		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	return c.JSON(http.StatusOK, snapshots)
+}
+
+func ListAppsSnapshotsHandler(c echo.Context) error {
+	name := c.Param("name")
+	apps := []string{}
+
+	err := c.Bind(&apps)
+	if err != nil {
+		return c.JSONPretty(http.StatusBadRequest, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	processor := glue.Processor{
+		AppName:           name,
+		DB:                common.GetDBConnection(),
+		SnapshotProcessor: &snapshotProcessor,
+		DockerSock:        config.DockerSocket,
+		BindIPHTTP:        config.AppsBindIPHTTP,
+		BindIPSSH:         config.AppsBindIPSSH,
+		AppsPath:          config.AppsPath,
+	}
+	snapshots, err := processor.ListAppsSnapshots(apps)
+	if err != nil {
+		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	return c.JSON(http.StatusOK, snapshots)
+}
+
+func ListSnapshotsByLabelHandler(c echo.Context) error {
+	label := c.Param("label")
+
+	processor := glue.Processor{
+		AppName:           "",
+		DB:                common.GetDBConnection(),
+		SnapshotProcessor: &snapshotProcessor,
+		DockerSock:        config.DockerSocket,
+		BindIPHTTP:        config.AppsBindIPHTTP,
+		BindIPSSH:         config.AppsBindIPSSH,
+		AppsPath:          config.AppsPath,
+	}
+	snapshots, err := processor.ListSnapshotsByLabel(label)
+	if err != nil {
+		return c.JSONPretty(http.StatusInternalServerError, Message{Message: err.Error()}, JSONIndent)
+	}
+
+	return c.JSON(http.StatusOK, snapshots)
+}

jsonmap/jsonmap.go

@@ -0,0 +1,100 @@
+package jsonmap
+
+import (
+	"bytes"
+	"context"
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strings"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+	"gorm.io/gorm/schema"
+)
+
+// JSONMap defined JSON data type, need to implements driver.Valuer, sql.Scanner interface
+type JSONMap map[string]interface{}
+
+// Value return json value, implement driver.Valuer interface
+func (m JSONMap) Value() (driver.Value, error) {
+	if m == nil {
+		return nil, nil
+	}
+	ba, err := m.MarshalJSON()
+	return string(ba), err
+}
+
+// Scan scan value into Jsonb, implements sql.Scanner interface
+func (m *JSONMap) Scan(val interface{}) error {
+	if val == nil {
+		*m = make(JSONMap)
+		return nil
+	}
+	var ba []byte
+	switch v := val.(type) {
+	case []byte:
+		ba = v
+	case string:
+		ba = []byte(v)
+	default:
+		return errors.New(fmt.Sprint("Failed to unmarshal JSONB value:", val))
+	}
+	t := map[string]interface{}{}
+	rd := bytes.NewReader(ba)
+	decoder := json.NewDecoder(rd)
+	decoder.UseNumber()
+	err := decoder.Decode(&t)
+	*m = t
+	return err
+}
+
+// MarshalJSON to output non base64 encoded []byte
+func (m JSONMap) MarshalJSON() ([]byte, error) {
+	if m == nil {
+		return []byte("null"), nil
+	}
+	t := (map[string]interface{})(m)
+	return json.Marshal(t)
+}
+
+// UnmarshalJSON to deserialize []byte
+func (m *JSONMap) UnmarshalJSON(b []byte) error {
+	t := map[string]interface{}{}
+	err := json.Unmarshal(b, &t)
+	*m = JSONMap(t)
+	return err
+}
+
+// GormDataType gorm common data type
+func (m JSONMap) GormDataType() string {
+	return "jsonmap"
+}
+
+// GormDBDataType gorm db data type
+func (JSONMap) GormDBDataType(db *gorm.DB, field *schema.Field) string {
+	switch db.Dialector.Name() {
+	case "sqlite3":
+		return "JSON"
+	case "mysql":
+		return "JSON"
+	case "postgres":
+		return "JSONB"
+	case "sqlserver":
+		return "NVARCHAR(MAX)"
+	}
+	return ""
+}
+
+func (jm JSONMap) GormValue(ctx context.Context, db *gorm.DB) clause.Expr {
+	data, _ := jm.MarshalJSON()
+	switch db.Dialector.Name() {
+	case "mysql":
+		if v, ok := db.Dialector.(*mysql.Dialector); ok && !strings.Contains(v.ServerVersion, "MariaDB") {
+			return gorm.Expr("CAST(? AS JSON)", string(data))
+		}
+	}
+	return gorm.Expr("?", string(data))
+}

main.go

@@ -5,10 +5,14 @@ import (
 	"log"
 	"time"
 
-	"github.com/labstack/echo"
+	"github.com/getsentry/sentry-go"
+	sentryecho "github.com/getsentry/sentry-go/echo"
+	"github.com/labstack/echo/v4"
 	"github.com/nats-io/nats.go"
 	"github.com/rosti-cz/node-api/apps"
+	"github.com/rosti-cz/node-api/apps/drivers"
 	"github.com/rosti-cz/node-api/common"
+	"github.com/rosti-cz/node-api/glue"
 	"github.com/rosti-cz/node-api/node"
 )
 
@@ -17,6 +21,10 @@ const JSONIndent = "  "
 
 var config common.Config
 var nc *nats.Conn
+var snapshotProcessor apps.SnapshotProcessor
+var nodeProcessor node.Processor
+
+var elapsedMetric int // time elapsed while loading stats about apps
 
 func _init() {
 	var err error
@@ -24,9 +32,18 @@ func _init() {
 	// Load config from environment variables
 	config = *common.GetConfig()
 
+	// Sentry
+	sentry.Init(sentry.ClientOptions{
+		Dsn:              config.SentryDSN,
+		AttachStacktrace: true,
+		Environment:      config.SentryENV,
+		TracesSampleRate: 0.1,
+	})
+
 	// Connect to the NATS service
 	nc, err = nats.Connect(config.NATSURL)
 	if err != nil {
+		sentry.CaptureException(err)
 		log.Fatalln(err)
 	}
 
@@ -35,11 +52,35 @@ func _init() {
 		DB: common.GetDBConnection(),
 	}
 	processor.Init()
+
+	// Prepare snapshot processor
+	snapshotProcessor = apps.SnapshotProcessor{
+		AppsPath:        config.AppsPath,
+		TmpSnapshotPath: config.SnapshotsPath,
+		IndexLabel:      config.SnapshotsIndexLabel,
+
+		Driver: drivers.S3Driver{
+			S3AccessKey: config.SnapshotsS3AccessKey,
+			S3SecretKey: config.SnapshotsS3SecretKey,
+			S3Endpoint:  config.SnapshotsS3Endpoint,
+			S3SSL:       config.SnapshotsS3SSL,
+			Bucket:      config.SnapshotsS3Bucket,
+		},
+	}
+
+	nodeProcessor = node.Processor{
+		DB: common.GetDBConnection(),
+	}
+	nodeProcessor.Init()
+
+	// Reset elapsed stats
+	elapsedMetric = -1
 }
 
 func main() {
 	_init()
 	defer nc.Drain()
+	defer sentry.Flush(time.Second * 10)
 
 	// Close database at the end
 	db := common.GetDBConnection()
@@ -50,14 +91,24 @@ func main() {
 
 	// Stats loop
 	go func() {
+		statsProcessor := glue.StatsProcessor{
+			DB:         common.GetDBConnection(),
+			DockerSock: config.DockerSocket,
+			BindIPHTTP: config.AppsBindIPHTTP,
+			BindIPSSH:  config.AppsBindIPSSH,
+			AppsPath:   config.AppsPath,
+		}
+
 		for {
 			log.Println("Stats gathering started")
 			start := time.Now()
-			err := gatherStats()
+			err := statsProcessor.GatherStats()
 			if err != nil {
+				sentry.CaptureException(err)
 				log.Println("LOOP ERROR:", err.Error())
 			}
 			elapsed := time.Since(start)
+			elapsedMetric = int(elapsed)
 			log.Printf("Stats gathering elapsed time: %.2fs\n", elapsed.Seconds())
 			time.Sleep(300 * time.Second)
 		}
@@ -66,8 +117,9 @@ func main() {
 	// Node stats
 	go func() {
 		for {
-			err := node.Log()
+			err := nodeProcessor.Log()
 			if err != nil {
+				sentry.CaptureException(err)
 				log.Println("NODE PERFORMANCE LOG ERROR:", err.Error())
 			}
 			time.Sleep(5 * time.Minute)
@@ -79,6 +131,7 @@ func main() {
 	e.Renderer = t
 
 	e.Use(TokenMiddleware)
+	e.Use(sentryecho.New(sentryecho.Options{}))
 
 	// NATS handling
 	// admin.apps.ALIAS.events
@@ -121,6 +174,9 @@ func main() {
 	// Set password for the app user in the container
 	e.PUT("/v1/apps/:name/password", setPasswordHandler)
 
+	// Clear password for the app user in the container
+	e.DELETE("/v1/apps/:name/password", clearPasswordHandler)
+
 	// Copies body of the request into /srv/.ssh/authorized_keys
 	e.PUT("/v1/apps/:name/keys", setKeysHandler)
 
@@ -130,6 +186,9 @@ func main() {
 	// Rebuilds existing app, it keeps the data but creates the container again
 	e.PUT("/v1/apps/:name/rebuild", rebuildAppHandler)
 
+	// Save metadata about app
+	e.POST("/v1/apps/:name/metadata", saveMetadataHandler)
+
 	// Adds new label
 	e.POST("/v1/apps/:name/labels", addLabelHandler)
 
@@ -139,6 +198,13 @@ func main() {
 	// Delete one app
 	e.DELETE("/v1/apps/:name", deleteAppHandler)
 
+	// Snapshots
+	e.POST("/v1/apps/:name/snapshots", CreateSnapshotHandler)
+	e.POST("/v1/apps/:name/snapshots/restore/:snapshot", RestoreFromSnapshotHandler)
+	e.GET("/v1/apps/:name/snapshots", ListSnapshotsHandler)
+	e.GET("/v1/snapshots", ListAppsSnapshotsHandler)
+	e.GET("/v1/snapshots/by-label", ListSnapshotsByLabelHandler)
+
 	// Orphans returns directories in /srv that doesn't match any hosted application
 	e.GET("/v1/orphans", getOrphansHander)
 

node/load.go

@@ -1,23 +1,33 @@
 package node
 
 import (
-	"github.com/rosti-cz/node-api/common"
-
 	"github.com/shirou/gopsutil/cpu"
 	"github.com/shirou/gopsutil/disk"
 	"github.com/shirou/gopsutil/load"
 	"github.com/shirou/gopsutil/mem"
+
+	"github.com/jinzhu/gorm"
 )
 
 const history = 72 * 3600 / 300 //  3 days, one record every five minutes
 
-func init() {
-	db := common.GetDBConnection()
-	db.AutoMigrate(PerformanceLog{})
+// Processor covers Node related methods for monitoring and calculating performance indexes.
+type Processor struct {
+	DB *gorm.DB
+}
+
+func (p *Processor) Init() {
+	p.DB.AutoMigrate(PerformanceLog{})
+}
+
+// GetNodeInfo returns information about this node
+func (p *Processor) GetNodeInfo() (*Node, error) {
+	node, err := p.Index()
+	return node, err
 }
 
 // Log creates a record for all important metrics used as
-func Log() error {
+func (p *Processor) Log() error {
 	performanceLog := PerformanceLog{}
 
 	// Load
@@ -45,8 +55,7 @@ func Log() error {
 	performanceLog.DiskSpaceUsage = diskUsage.UsedPercent / 100.0
 
 	// Save
-	db := common.GetDBConnection()
-	err = db.Create(&performanceLog).Error
+	err = p.DB.Create(&performanceLog).Error
 	if err != nil {
 		return err
 	}
@@ -54,13 +63,13 @@ func Log() error {
 	// and clean
 	// we have to use this stupid approach because DELETE doesn't support ORDER BY and LIMIT
 	toDeleteLogs := []PerformanceLog{}
-	err = db.Order("id DESC").Limit("99").Offset(history).Find(&toDeleteLogs).Error
+	err = p.DB.Order("id DESC").Limit("99").Offset(history).Find(&toDeleteLogs).Error
 	if err != nil {
 		return err
 	}
 
 	for _, toDeleteLog := range toDeleteLogs {
-		err = db.Delete(&toDeleteLog).Error
+		err = p.DB.Delete(&toDeleteLog).Error
 		if err != nil {
 			return err
 		}
@@ -71,7 +80,7 @@ func Log() error {
 
 // Index returns number from 0 to 1 where 0 means least loaded and 1 maximally loaded.
 // It uses history of last 72 hours
-func index() (*Node, error) {
+func (p *Processor) Index() (*Node, error) {
 	node := Node{
 		Index: 1.0,
 	}
@@ -82,11 +91,9 @@ func index() (*Node, error) {
 		return &node, err
 	}
 
-	db := common.GetDBConnection()
-
 	logs := []PerformanceLog{}
 
-	err = db.Find(&logs).Error
+	err = p.DB.Find(&logs).Error
 	if err != nil {
 		return &node, err
 	}

node/main.go

@@ -1,7 +1 @@
 package node
-
-// GetNodeInfo returns information about this node
-func GetNodeInfo() (*Node, error) {
-	node, err := index()
-	return node, err
-}

stats.go

@@ -1,106 +0,0 @@
-package main
-
-import (
-	"log"
-
-	"github.com/rosti-cz/node-api/apps"
-	"github.com/rosti-cz/node-api/common"
-	"github.com/rosti-cz/node-api/docker"
-)
-
-// updateUsage updates various resource usage of the container/app in the database
-func updateUsage(name string) error {
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-
-	app, err := processor.Get(name)
-	if err != nil {
-		return err
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-
-	state, err := container.GetState()
-	if err != nil {
-		return err
-	}
-
-	err = processor.UpdateResources(
-		name,
-		state.State,
-		state.CPUUsage,
-		state.MemoryUsage,
-		state.DiskUsageBytes,
-		state.DiskUsageInodes,
-	)
-
-	return err
-}
-
-// Updates only container's state
-func updateState(name string) error {
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	app, err := processor.Get(name)
-	if err != nil {
-		return err
-	}
-
-	container := docker.Container{
-		App: app,
-	}
-	state, err := container.Status()
-	if err != nil {
-		return err
-	}
-
-	err = processor.UpdateState(
-		app.Name,
-		state,
-	)
-	return err
-}
-
-// gatherStats loops over all applications and calls updateUsage to write various metric into the database.
-func gatherStats() error {
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	appList, err := processor.List()
-	if err != nil {
-		return err
-	}
-
-	for _, app := range *appList {
-		err := updateUsage(app.Name)
-		if err != nil {
-			log.Println("STATS ERROR:", err.Error())
-		}
-	}
-
-	return nil
-}
-
-// gatherStates loops over all apps and updates their container state
-func gatherStates() error {
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-	appList, err := processor.List()
-	if err != nil {
-		return err
-	}
-
-	for _, app := range *appList {
-		err := updateState(app.Name)
-		if err != nil {
-			log.Println("STATE ERROR:", err.Error())
-		}
-	}
-
-	return nil
-}

templates.go

@@ -5,7 +5,7 @@ import (
 	"io"
 
 	"github.com/gobuffalo/packr"
-	"github.com/labstack/echo"
+	"github.com/labstack/echo/v4"
 )
 
 // Template struct

tools.go

@@ -2,15 +2,10 @@ package main
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
 	"log"
-	"time"
 
 	"github.com/nats-io/nats.go"
-	"github.com/rosti-cz/node-api/apps"
-	"github.com/rosti-cz/node-api/common"
-	"github.com/rosti-cz/node-api/docker"
 )
 
 func errorReplyFormater(m *nats.Msg, message string, err error) error {
@@ -54,43 +49,3 @@ func publish(appName string, state string, isErr bool) {
 		log.Println("ERROR: publish:", err.Error())
 	}
 }
-
-// waitForApp waits until app is ready or timeout is reached.
-// It's used in some async calls that need at least part of the
-// environment prepared.
-func waitForApp(appName string) error {
-	processor := apps.AppsProcessor{
-		DB: common.GetDBConnection(),
-	}
-
-	sleepFor := 5 * time.Second
-	loops := 6
-
-	for i := 0; i < loops; i++ {
-		err := updateState(appName)
-		if err != nil {
-			time.Sleep(sleepFor)
-			continue
-		}
-
-		app, err := processor.Get(appName)
-		if err != nil {
-			return err
-		}
-
-		container := docker.Container{
-			App: app,
-		}
-
-		status, err := container.Status()
-
-		if status == "running" {
-			return nil
-		}
-
-		time.Sleep(sleepFor)
-		continue
-	}
-
-	return errors.New("timeout reached")
-}

types.go

@@ -1,9 +1,8 @@
 package main
 
-import "encoding/json"
-
-// Path where authorized keys are
-const sshPubKeysLocation = "/srv/.ssh/authorized_keys"
+import (
+	"encoding/json"
+)
 
 // RequestMessage message
 type RequestMessage struct {
@@ -57,6 +56,17 @@ type QuickServices struct {
 	PHP       bool `json:"php"`
 	Ruby      bool `json:"ruby"`
 	Deno      bool `json:"deno"`
+	Bun      bool `json:"bun"`
 	Memcached bool `json:"memcached"`
 	Redis     bool `json:"redis"`
 }
+
+// Set technology
+type Technology struct {
+	Name    string
+	Version string
+}
+
+type createSnapshotBody struct {
+	Labels []string `json:"labels"`
+}