Redis driver, changing name of the package
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64
README.md
64
README.md
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@ -9,7 +9,7 @@ servers instead. Each server runs one or more instances of lobby daemon and it r
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about its hostname and configured labels.
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Labels are similar what you could know from AWS. It's basically alternative to resources' tags feature
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with the only different that you can use this anywhere. Every server sends something called
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with the only different that you can use this anywhere including AWS. Every server sends something called
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"discovery packet" which is basically a json that looks like this:
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```json
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@ -19,14 +19,14 @@ with the only different that you can use this anywhere. Every server sends somet
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"service:smtp",
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"public_ip4:1.2.3.4",
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"public_ip6:2a03::1"
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],
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"last_check": 1630612478
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]
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}
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```
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The packet contains information what's the server's hostname and then list of labels describing
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what's running on it and what are the IP addresses. What's in the labels is completely up to you
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but in some use-cases (Node Exporter API endpoint) it expects "NAME:VALUE" format.
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what's running on it, what are the IP addresses, services, directories to backup or server's location for example.
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What's in the labels is completely up to you but in some use-cases (Node Exporter API endpoint) it
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expects "NAME:VALUE" format.
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The labels can be configured via environment variables but also as files located in
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*/etc/lobby/labels* (configurable path) so it can dynamically change. Another way is to use
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@ -88,22 +88,29 @@ To test if local instance is running call this:
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There are other config directives you can use to fine-tune lobbyd to exactly what you need.
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| Environment variable | Type | Default | Required | Note |
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| ----------------------- | ------ | ----------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| TOKEN | string | | no | Authentication token for API, if empty auth is disabled |
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| HOST | string | 127.0.0.1 | no | IP address used for the REST server to listen |
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| PORT | int | 1313 | no | Port related to the address above |
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| NATS_URL | string | | yes | NATS URL used to connect to the NATS server |
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| NATS_DISCOVERY_CHANNEL | string | lobby.discovery | no | Channel where the keep-alive packets are sent |
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| LABELS | string | | no | List of labels, labels should be separated by comma |
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| LABELS_PATH | string | /etc/lobby/labels | no | Path where filesystem based labels are located, one label per line, filename is not important for lobby |
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| RUNTIME_LABELS_FILENAME | string | _runtime | no | Filename for file created in LabelsPath where runtime labels will be added |
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| HOSTNAME | string | | no | Override local machine's hostname |
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| CLEAN_EVERY | int | 15 | no | How often to clean the list of discovered servers to get rid of the not alive ones [secs] |
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| KEEP_ALIVE | int | 5 | no | how often to send the keep-alive discovery message with all available information [secs] |
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| TTL | int | 30 | no | After how many secs is discovery record considered as invalid |
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| NODE_EXPORTER_PORT | int | 9100 | no | Default port where node_exporter listens on all registered servers, this is used when the special prometheus labels doesn't contain port |
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| REGISTER | bool | true | no | If true (default) then local instance is registered with other instance (discovery packet is sent regularly), if false the daemon runs only as a client |
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| Environment variable | Type | Default | Required | Note |
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| ----------------------- | ------ | ----------------- | ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| TOKEN | string | | no | Authentication token for API, if empty auth is disabled |
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| HOST | string | 127.0.0.1 | no | IP address used for the REST server to listen |
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| PORT | int | 1313 | no | Port related to the address above |
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| DISABLE_API | bool | false | no | If true API interface won't start |
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| DRIVER | string | NATS | yes | Selects which driver is used to exchange the discovery packets. |
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| NATS_URL | string | | yes (NATS driver) | NATS URL used to connect to the NATS server |
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| NATS_DISCOVERY_CHANNEL | string | lobby.discovery | no | Channel where the keep-alive packets are sent |
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| REDIS_HOST | string | 127.0.0.1" | no | Redis host |
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| REDIS_PORT | uint16 | 6379 | no | Redis port |
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| REDIS_DB | string | 0 | no | Redis DB |
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| REDIS_CHANNEL | string | lobby:discovery | no | Redis channel |
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| REDIS_PASSWORD | string | | no | Redis password |
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| LABELS | string | | no | List of labels, labels should be separated by comma |
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| LABELS_PATH | string | /etc/lobby/labels | no | Path where filesystem based labels are located, one label per line, filename is not important for lobby |
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| RUNTIME_LABELS_FILENAME | string | _runtime | no | Filename for file created in LabelsPath where runtime labels will be added |
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| HOSTNAME | string | | no | Override local machine's hostname |
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| CLEAN_EVERY | int | 15 | no | How often to clean the list of discovered servers to get rid of the not alive ones [secs] |
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| KEEP_ALIVE | int | 5 | no | how often to send the keep-alive discovery message with all available information [secs] |
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| TTL | int | 30 | no | After how many secs is discovery record considered as invalid |
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| NODE_EXPORTER_PORT | int | 9100 | no | Default port where node_exporter listens on all registered servers, this is used when the special prometheus labels doesn't contain port |
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| REGISTER | bool | true | no | If true (default) then local instance is registered with other instance (discovery packet is sent regularly), if false the daemon runs only as a client |
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### Service discovery for Prometheus
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@ -197,12 +204,25 @@ If there is an error the error message is returned as plain text.
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* Golang client is part of this repository.
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* There is also [Python client](https://github.com/by-cx/lobby-python) available.
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## Notes
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I wanted to use SQS or SNS as backend but when I checked the services I found out
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it wouldn't work. SNS would require open HTTP server whicn is hard to do in our
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infrastructure and I couldn't find a way how SQS could deliver every message
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to all instances of lobbyd.
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Instead I decided to implement Redis because it's much easier to use for
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development and testing. But there is no reason why it couldn't work in production
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too.
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## TODO
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* [X] Tests
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* [ ] Command hooks - script or list of scripts that are triggered when discovery status has changed
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* [ ] Support for multiple active backend drivers
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* [ ] SNS driver
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* [ ] Redis driver
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* [X] Remove the 5 secs waiting when daemon is stopped
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* [X] API to allow add labels at runtime
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@ -6,8 +6,8 @@ import (
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"fmt"
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"strings"
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"github.com/by-cx/lobby/server"
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"github.com/go-resty/resty/v2"
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"github.com/rosti-cz/server_lobby/server"
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)
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// Encapsulation of Lobby's client code
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@ -1,6 +1,6 @@
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package common
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import "github.com/rosti-cz/server_lobby/server"
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import "github.com/by-cx/lobby/server"
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// Listener is a function that returns received discovery
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type Listener func(server.Discovery)
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@ -7,8 +7,8 @@ import (
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"strconv"
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"strings"
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"github.com/by-cx/lobby/server"
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"github.com/fatih/color"
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"github.com/rosti-cz/server_lobby/server"
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)
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func printDiscovery(discovery server.Discovery) {
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@ -6,8 +6,8 @@ import (
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"os"
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"strings"
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"github.com/rosti-cz/server_lobby/client"
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"github.com/rosti-cz/server_lobby/server"
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"github.com/by-cx/lobby/client"
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"github.com/by-cx/lobby/server"
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)
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func Usage() {
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@ -3,8 +3,8 @@ package main
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import (
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"log"
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"github.com/by-cx/lobby/server"
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"github.com/kelseyhightower/envconfig"
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"github.com/rosti-cz/server_lobby/server"
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)
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// Config keeps info about configuration of this daemon
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@ -12,8 +12,15 @@ type Config struct {
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Token string `envconfig:"TOKEN" required:"false"` // Authentication token, if empty auth is disabled
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Host string `envconfig:"HOST" required:"false" default:"127.0.0.1"` // IP address used for the REST server to listen
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Port uint16 `envconfig:"PORT" required:"false" default:"1313"` // Port related to the address above
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NATSURL string `envconfig:"NATS_URL" required:"true"` // NATS URL used to connect to the NATS server
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DisableAPI bool `envconfig:"DISABLE_API" required:"false" default:"false"` // If true API interface won't start
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Driver string `envconfig:"DRIVER" required:"false" default:"NATS"` // Select driver to use to communicate with the group of nodes. The possible values are NATS and Redis
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NATSURL string `envconfig:"NATS_URL" required:"false"` // NATS URL used to connect to the NATS server
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NATSDiscoveryChannel string `envconfig:"NATS_DISCOVERY_CHANNEL" required:"false" default:"lobby.discovery"` // Channel where the kepp alive packets are sent
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RedisHost string `envconfig:"REDIS_HOST" required:"false" default:"127.0.0.1"` // Redis host
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RedisPort uint16 `envconfig:"REDIS_PORT" required:"false" default:"6379"` // Redis port
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RedisDB uint `envconfig:"REDIS_DB" required:"false" default:"0"` // Redis DB
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RedisChannel string `envconfig:"REDIS_CHANNEL" required:"false" default:"lobby:discovery"` // Redis channel
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RedisPassword string `envconfig:"REDIS_PASSWORD" required:"false" default:""` // Redis password
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Labels server.Labels `envconfig:"LABELS" required:"false" default:""` // List of labels
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LabelsPath string `envconfig:"LABELS_PATH" required:"false" default:"/etc/lobby/labels"` // Path where filesystem based labels are located
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RuntimeLabelsFilename string `envconfig:"RUNTIME_LABELS_FILENAME" required:"false" default:"_runtime"` // Filename for file created in LabelsPath where runtime labels will be added
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@ -34,5 +41,13 @@ func GetConfig() *Config {
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log.Fatal(err.Error())
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}
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if config.Driver != "Redis" && config.Driver != "NATS" {
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log.Fatal("ERROR: the only supported drivers are Redis and NATS (default)")
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}
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if config.Driver == "NATS" && len(config.NATSURL) == 0 {
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log.Fatal("ERROR: NATS_URL cannot be empty when driver is set to NATS")
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}
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return &config
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}
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@ -6,8 +6,8 @@ import (
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"net/http"
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"strings"
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"github.com/by-cx/lobby/server"
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"github.com/labstack/echo"
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"github.com/rosti-cz/server_lobby/server"
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)
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func listHandler(c echo.Context) error {
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@ -9,11 +9,12 @@ import (
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"syscall"
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"time"
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"github.com/by-cx/lobby/common"
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"github.com/by-cx/lobby/nats_driver"
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"github.com/by-cx/lobby/redis_driver"
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"github.com/by-cx/lobby/server"
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"github.com/labstack/echo"
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"github.com/labstack/echo/middleware"
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"github.com/rosti-cz/server_lobby/common"
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"github.com/rosti-cz/server_lobby/nats_driver"
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"github.com/rosti-cz/server_lobby/server"
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)
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var discoveryStorage server.Discoveries = server.Discoveries{}
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@ -41,12 +42,27 @@ func init() {
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}
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// Setup driver
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driver = &nats_driver.Driver{
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NATSUrl: config.NATSURL,
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NATSDiscoveryChannel: config.NATSDiscoveryChannel,
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if config.Driver == "NATS" {
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driver = &nats_driver.Driver{
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NATSUrl: config.NATSURL,
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NATSDiscoveryChannel: config.NATSDiscoveryChannel,
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LogChannel: discoveryStorage.LogChannel,
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LogChannel: discoveryStorage.LogChannel,
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}
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} else if config.Driver == "Redis" {
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driver = &redis_driver.Driver{
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Host: config.RedisHost,
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Port: uint(config.RedisPort),
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Password: config.RedisPassword,
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Channel: config.RedisChannel,
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DB: uint(config.RedisDB),
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LogChannel: discoveryStorage.LogChannel,
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}
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} else {
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log.Fatalf("unsupported driver %s", config.Driver)
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}
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}
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// cleanDiscoveryPool clears the local server map and keeps only the alive servers
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@ -147,12 +163,14 @@ func main() {
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e.Use(middleware.Recover())
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// Routes
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e.GET("/", listHandler)
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e.GET("/v1/discovery", getIdentificationHandler)
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e.GET("/v1/discoveries", listHandler)
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e.POST("/v1/labels", addLabelsHandler)
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e.DELETE("/v1/labels", deleteLabelsHandler)
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e.GET("/v1/prometheus/:name", prometheusHandler)
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if config.DisableAPI {
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e.GET("/", listHandler)
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e.GET("/v1/discovery", getIdentificationHandler)
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e.GET("/v1/discoveries", listHandler)
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e.POST("/v1/labels", addLabelsHandler)
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e.DELETE("/v1/labels", deleteLabelsHandler)
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e.GET("/v1/prometheus/:name", prometheusHandler)
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}
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// ------------------------------
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// Termination signals processing
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@ -4,7 +4,7 @@ import (
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"strconv"
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"strings"
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"github.com/rosti-cz/server_lobby/server"
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"github.com/by-cx/lobby/server"
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)
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// [
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6
go.mod
6
go.mod
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@ -1,19 +1,21 @@
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module github.com/rosti-cz/server_lobby
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module github.com/by-cx/lobby
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go 1.16
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require (
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github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
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github.com/fatih/color v1.12.0
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github.com/go-redis/redis v6.15.9+incompatible
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github.com/go-resty/resty/v2 v2.6.0
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github.com/golang/protobuf v1.5.2 // indirect
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github.com/kelseyhightower/envconfig v1.4.0
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github.com/labstack/echo v3.3.10+incompatible
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github.com/labstack/gommon v0.3.0 // indirect
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github.com/nats-io/nats-server/v2 v2.4.0 // indirect
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github.com/nats-io/nats.go v1.12.0
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github.com/onsi/gomega v1.16.0 // indirect
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github.com/shirou/gopsutil/v3 v3.21.7
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github.com/stretchr/testify v1.7.0
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github.com/valyala/fasttemplate v1.2.1 // indirect
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golang.org/x/net v0.0.0-20210614182718-04defd469f4e // indirect
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google.golang.org/protobuf v1.27.1 // indirect
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)
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|
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61
go.sum
61
go.sum
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@ -1,15 +1,23 @@
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github.com/StackExchange/wmi v1.2.1 h1:VIkavFPXSjcnS+O8yTq7NI32k0R5Aj+v39y29VYDOSA=
|
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github.com/StackExchange/wmi v1.2.1/go.mod h1:rcmrprowKIVzvc+NUiLncP2uuArMWLCbu9SBzvHz7e8=
|
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github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
|
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
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github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
|
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github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
|
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github.com/fatih/color v1.12.0 h1:mRhaKNwANqRgUBGKmnI5ZxEk7QXmjQeCcuYFMX2bfcc=
|
||||
github.com/fatih/color v1.12.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
|
||||
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
|
||||
github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
|
||||
github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
|
||||
github.com/go-ole/go-ole v1.2.5 h1:t4MGB5xEDZvXI+0rMjjsfBsD7yAgp/s9ZDkL1JndXwY=
|
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github.com/go-ole/go-ole v1.2.5/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
|
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github.com/go-redis/redis v6.15.9+incompatible h1:K0pv1D7EQUjfyoMql+r/jZqCLizCGKFlFgcHWWmHQjg=
|
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github.com/go-redis/redis v6.15.9+incompatible/go.mod h1:NAIEuMOZ/fxfXJIrKDQDz8wamY7mA7PouImQ2Jvg6kA=
|
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github.com/go-resty/resty/v2 v2.6.0 h1:joIR5PNLM2EFqqESUjCMGXrWmXNHEU9CEiK813oKYS4=
|
||||
github.com/go-resty/resty/v2 v2.6.0/go.mod h1:PwvJS6hvaPkjtjNg9ph+VrSD92bi5Zq73w/BIH7cC3Q=
|
||||
github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
|
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
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github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
|
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github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
|
||||
github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
|
||||
|
|
@ -24,6 +32,7 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
|
|||
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
|
||||
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
|
||||
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
|
||||
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
|
||||
github.com/kelseyhightower/envconfig v1.4.0 h1:Im6hONhd3pLkfDFsbRgu68RDNkGF1r3dvMUtDTo2cv8=
|
||||
github.com/kelseyhightower/envconfig v1.4.0/go.mod h1:cccZRl6mQpaq41TPp5QxidR+Sa3axMbJDNb//FQX6Gg=
|
||||
github.com/klauspost/compress v1.13.4 h1:0zhec2I8zGnjWcKyLl6i3gPqKANCCn5e9xmviEEeX6s=
|
||||
|
|
@ -54,12 +63,24 @@ github.com/nats-io/nkeys v0.3.0 h1:cgM5tL53EvYRU+2YLXIK0G2mJtK12Ft9oeooSZMA2G8=
|
|||
github.com/nats-io/nkeys v0.3.0/go.mod h1:gvUNGjVcM2IPr5rCsRsC6Wb3Hr2CQAm08dsxtV6A5y4=
|
||||
github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
|
||||
github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
|
||||
github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
|
||||
github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
|
||||
github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
|
||||
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
|
||||
github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
|
||||
github.com/onsi/ginkgo v1.16.4 h1:29JGrr5oVBm5ulCWet69zQkzWipVXIol6ygQUe/EzNc=
|
||||
github.com/onsi/ginkgo v1.16.4/go.mod h1:dX+/inL/fNMqNlz0e9LfyB9TswhZpCVdJM/Z6Vvnwo0=
|
||||
github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
|
||||
github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
|
||||
github.com/onsi/gomega v1.16.0 h1:6gjqkI8iiRHMvdccRJM8rVKjCWk6ZIm6FTm3ddIe4/c=
|
||||
github.com/onsi/gomega v1.16.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/shirou/gopsutil/v3 v3.21.7 h1:PnTqQamUjwEDSgn+nBGu0qSDV/CfvyiR/gwTH3i7HTU=
|
||||
github.com/shirou/gopsutil/v3 v3.21.7/go.mod h1:RGl11Y7XMTQPmHh8F0ayC6haKNBgH4PXMJuTAcMOlz4=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
|
||||
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
|
||||
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
|
||||
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
|
||||
github.com/tklauser/go-sysconf v0.3.7 h1:HT7h4+536gjqeq1ZIJPgOl1rg1XFatQGVZWp7Py53eg=
|
||||
|
|
@ -71,36 +92,63 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
|
|||
github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
|
||||
github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
|
||||
github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
|
||||
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
|
||||
golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||
golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
|
||||
golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e h1:gsTQYXdTw2Gq7RBsWvlQ91b+aEQ6bXFUngBGuR8sPpI=
|
||||
golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
|
||||
golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
|
||||
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
||||
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
|
||||
golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
|
||||
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
|
||||
golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4 h1:4nGaVu0QrbjT/AK2PRLuQfQuh6DJve+pELhqTdAj3x0=
|
||||
golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
|
||||
golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
|
||||
golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
|
||||
golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
|
||||
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190130150945-aca44879d564/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
|
||||
golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
|
||||
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
|
||||
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
|
||||
golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1 h1:NusfzzA6yGQ+ua51ck7E3omNUX/JuqbFSaRGqU8CcLI=
|
||||
golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
|
||||
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
|
||||
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
|
||||
golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
|
||||
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
|
||||
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
|
||||
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
|
||||
|
|
@ -113,6 +161,13 @@ google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+Rur
|
|||
google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
|
||||
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
|
||||
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
|
|
|
|||
|
|
@ -4,11 +4,12 @@ import (
|
|||
"encoding/json"
|
||||
"fmt"
|
||||
|
||||
"github.com/by-cx/lobby/common"
|
||||
"github.com/by-cx/lobby/server"
|
||||
"github.com/nats-io/nats.go"
|
||||
"github.com/rosti-cz/server_lobby/common"
|
||||
"github.com/rosti-cz/server_lobby/server"
|
||||
)
|
||||
|
||||
// NATS drivers is used to send discovery packet to other nodes into the group via NATS messenging protocol.
|
||||
type Driver struct {
|
||||
NATSUrl string
|
||||
NATSDiscoveryChannel string
|
||||
|
|
@ -65,18 +66,22 @@ func (d *Driver) Init() error {
|
|||
return nil
|
||||
}
|
||||
|
||||
// Close is called when all is done.
|
||||
func (d *Driver) Close() error {
|
||||
return d.nc.Drain()
|
||||
}
|
||||
|
||||
// RegisterSubscribeFunction sets the function that will process the incoming messages
|
||||
func (d *Driver) RegisterSubscribeFunction(listener common.Listener) {
|
||||
d.subscribeListener = listener
|
||||
}
|
||||
|
||||
// RegisterUnsubscribeFunction sets the function that will process the goodbye incoming messages
|
||||
func (d *Driver) RegisterUnsubscribeFunction(listener common.Listener) {
|
||||
d.unsubscribeListener = listener
|
||||
}
|
||||
|
||||
// SendDiscoveryPacket send discovery packet to the group.
|
||||
func (d *Driver) SendDiscoveryPacket(discovery server.Discovery) error {
|
||||
envelope := discoveryEnvelope{
|
||||
Discovery: discovery,
|
||||
|
|
@ -94,6 +99,7 @@ func (d *Driver) SendDiscoveryPacket(discovery server.Discovery) error {
|
|||
return nil
|
||||
}
|
||||
|
||||
// SendGoodbyePacket deregister node from the group. It tells everybody that it's going to die.
|
||||
func (d *Driver) SendGoodbyePacket(discovery server.Discovery) error {
|
||||
envelope := discoveryEnvelope{
|
||||
Discovery: discovery,
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@ package nats_driver
|
|||
import (
|
||||
"encoding/json"
|
||||
|
||||
"github.com/rosti-cz/server_lobby/server"
|
||||
"github.com/by-cx/lobby/server"
|
||||
)
|
||||
|
||||
// discoveryEnvelope adds a message to the standard discovery format. The message
|
||||
|
|
|
|||
|
|
@ -0,0 +1,142 @@
|
|||
package redis_driver
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
|
||||
"github.com/by-cx/lobby/common"
|
||||
"github.com/by-cx/lobby/server"
|
||||
"github.com/go-redis/redis"
|
||||
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// Redis drivers is used to send discovery packet to other nodes into the group via Redis's pubsub protocol.
|
||||
type Driver struct {
|
||||
Host string
|
||||
Port uint
|
||||
Password string
|
||||
Channel string
|
||||
DB uint
|
||||
|
||||
LogChannel chan string
|
||||
|
||||
subscribeListener common.Listener
|
||||
unsubscribeListener common.Listener
|
||||
|
||||
redis *redis.Client
|
||||
}
|
||||
|
||||
// handler is called asynchronously so and because it cannot log directly to stderr there
|
||||
// is channel called LogChannel that can be used to log error messages from this
|
||||
func (d *Driver) handler(payload string) {
|
||||
message := discoveryEnvelope{}
|
||||
err := json.Unmarshal([]byte(payload), &message)
|
||||
if err != nil && d.LogChannel != nil {
|
||||
d.LogChannel <- fmt.Errorf("decoding message error: %v", err).Error()
|
||||
}
|
||||
|
||||
err = message.Discovery.Validate()
|
||||
if err != nil && d.LogChannel != nil {
|
||||
d.LogChannel <- fmt.Errorf("validation error: %v", err).Error()
|
||||
}
|
||||
|
||||
if message.Message == "hi" {
|
||||
d.subscribeListener(message.Discovery)
|
||||
} else if message.Message == "goodbye" {
|
||||
d.unsubscribeListener(message.Discovery)
|
||||
} else {
|
||||
if d.LogChannel != nil {
|
||||
d.LogChannel <- "incompatible message"
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Init connect to Redis, subscribes to the channel and waits for the messages.
|
||||
// It runs goroutine in background that listens for new messages.
|
||||
func (d *Driver) Init() error {
|
||||
if d.LogChannel == nil {
|
||||
return fmt.Errorf("please initiate LogChannel variable")
|
||||
}
|
||||
|
||||
if len(d.Host) == 0 {
|
||||
return fmt.Errorf("parameter Host cannot be empty")
|
||||
}
|
||||
|
||||
if len(d.Channel) == 0 {
|
||||
return fmt.Errorf("pattern cannot be empty")
|
||||
}
|
||||
|
||||
if d.Port <= 0 || d.Port > 65536 {
|
||||
return fmt.Errorf("port has to be in range of 0-65536")
|
||||
}
|
||||
|
||||
d.redis = redis.NewClient(&redis.Options{
|
||||
Addr: fmt.Sprintf("%s:%d", d.Host, d.Port),
|
||||
Password: d.Password,
|
||||
DB: int(d.DB),
|
||||
})
|
||||
|
||||
pubsub := d.redis.Subscribe(d.Channel)
|
||||
|
||||
go func(pubsub *redis.PubSub, d *Driver) {
|
||||
channel := pubsub.Channel()
|
||||
|
||||
for message := range channel {
|
||||
d.handler(message.Payload)
|
||||
}
|
||||
}(pubsub, d)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Close is called when all is done.
|
||||
func (d *Driver) Close() error {
|
||||
return d.redis.Close()
|
||||
}
|
||||
|
||||
// RegisterSubscribeFunction sets the function that will process the incoming messages
|
||||
func (d *Driver) RegisterSubscribeFunction(listener common.Listener) {
|
||||
d.subscribeListener = listener
|
||||
}
|
||||
|
||||
// RegisterUnsubscribeFunction sets the function that will process the goodbye incoming messages
|
||||
func (d *Driver) RegisterUnsubscribeFunction(listener common.Listener) {
|
||||
d.unsubscribeListener = listener
|
||||
}
|
||||
|
||||
// SendDiscoveryPacket send discovery packet to the group.
|
||||
func (d *Driver) SendDiscoveryPacket(discovery server.Discovery) error {
|
||||
envelope := discoveryEnvelope{
|
||||
Discovery: discovery,
|
||||
Message: "hi",
|
||||
}
|
||||
|
||||
data, err := envelope.Bytes()
|
||||
if err != nil {
|
||||
return fmt.Errorf("sending discovery formating message error: %v", err)
|
||||
}
|
||||
|
||||
err = d.redis.Publish(d.Channel, data).Err()
|
||||
if err != nil {
|
||||
return fmt.Errorf("sending discovery error: %v", err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SendGoodbyePacket deregister node from the group. It tells everybody that it's going to die.
|
||||
func (d *Driver) SendGoodbyePacket(discovery server.Discovery) error {
|
||||
envelope := discoveryEnvelope{
|
||||
Discovery: discovery,
|
||||
Message: "goodbye",
|
||||
}
|
||||
|
||||
data, err := envelope.Bytes()
|
||||
if err != nil {
|
||||
return fmt.Errorf("sending discovery formating message error: %v", err)
|
||||
}
|
||||
err = d.redis.Publish(d.Channel, data).Err()
|
||||
if err != nil {
|
||||
return fmt.Errorf("sending discovery error: %v", err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
package redis_driver
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
|
||||
"github.com/by-cx/lobby/server"
|
||||
)
|
||||
|
||||
// discoveryEnvelope adds a message to the standard discovery format. The message
|
||||
// can be "hi" or "goodbye" where "hi" is used when the node is sending keep alive
|
||||
// packets and "goodbye" means the node is leaving.
|
||||
type discoveryEnvelope struct {
|
||||
Discovery server.Discovery `json:"discovery"`
|
||||
Message string `json:"message"` // can be hi or goodbye
|
||||
}
|
||||
|
||||
func (e *discoveryEnvelope) Bytes() ([]byte, error) {
|
||||
body, err := json.Marshal(e)
|
||||
return body, err
|
||||
}
|
||||
Loading…
Reference in New Issue