Configuration structure

* Configurable apps path

common/config.go

@@ -0,0 +1,24 @@
+package common
+
+import (
+	"log"
+
+	"github.com/kelseyhightower/envconfig"
+)
+
+// Config keeps info about configuration of this daemon
+type Config struct {
+	AppsPath string `envconfig:"APPS_PATH" default:"/srv"` // Where applications are located
+}
+
+// GetConfig return configuration created based on environment variables
+func GetConfig() *Config {
+	var config Config
+
+	err := envconfig.Process("", &config)
+	if err != nil {
+		log.Fatal(err.Error())
+	}
+
+	return &config
+}

config.go

@@ -2,10 +2,10 @@ package main
 
 import (
 	"io/ioutil"
-	"os"
 	"log"
+	"os"
 
-	"github.com/satori/go.uuid"
+	uuid "github.com/satori/go.uuid"
 )
 
 const configDirectory = "/var/lib/node-api"

docker/types.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/rosti-cz/node-api/apps"
+	"github.com/rosti-cz/node-api/common"
 )
 
 // username in the containers under which all containers run
@@ -30,7 +31,8 @@ func (c *Container) getDriver() *Driver {
 
 // volumeHostPath each container has one volume mounted into it,
 func (c *Container) volumeHostPath() string {
-	return path.Join("/srv", c.App.Name)
+	config := common.GetConfig()
+	return path.Join(config.AppsPath, c.App.Name)
 }
 
 // GetRawResourceStats returns RAW CPU and memory usage directly from Docker API
@@ -73,7 +75,8 @@ func (c *Container) GetState() (*apps.AppState, error) {
 func (c *Container) Status() (string, error) {
 	status := "unknown"
 
-	// if _, err := os.Stat(path.Join("/srv", c.App.Name)); !os.IsNotExist(err) {
+	// config := common.GetConfig()
+	// if _, err := os.Stat(path.Join(config.AppsPath, c.App.Name)); !os.IsNotExist(err) {
 	// 	status = "data-only"
 	// }
 
@@ -176,7 +179,8 @@ func (c *Container) Delete() error {
 		}
 	}
 
-	volumePath := path.Join("/srv", c.App.Name)
+	config := common.GetConfig()
+	volumePath := path.Join(config.AppsPath, c.App.Name)
 	err = removeDirectory(volumePath)
 	if err != nil {
 		log.Println(err)

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/gobuffalo/packr v1.30.1
 	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/opencontainers/go-digest v1.0.0 // indirect

go.sum

@@ -83,6 +83,8 @@ github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqx
 github.com/json-iterator/go v1.1.5/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/karrick/godirwalk v1.10.12/go.mod h1:RoGL9dQei4vP9ilrpETWE8CLOZ1kiN0LhBygSwrAsHA=
+github.com/kelseyhightower/envconfig v1.4.0 h1:Im6hONhd3pLkfDFsbRgu68RDNkGF1r3dvMUtDTo2cv8=
+github.com/kelseyhightower/envconfig v1.4.0/go.mod h1:cccZRl6mQpaq41TPp5QxidR+Sa3axMbJDNb//FQX6Gg=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=