Реализовано автоматическое восстановление соединения с AMQP

Gopkg.lock

@@ -1,6 +1,12 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
+[[projects]]
+  name = "github.com/assembla/cony"
+  packages = ["."]
+  revision = "dd62697b0adb9adfda8589520cb85f4cbc2361f1"
+  version = "v0.3.2"
+
 [[projects]]
   name = "github.com/certifi/gocertifi"
   packages = ["."]
@@ -65,7 +71,7 @@
   branch = "master"
   name = "github.com/mediocregopher/radix.v2"
   packages = ["cluster","pool","redis","util"]
-  revision = "0fe87e4a1bde3bb29991ea5ee1d9d536b77877d5"
+  revision = "d234cfb904a91daafa4e1f92599a893b349cc0c2"
 
 [[projects]]
   branch = "master"
@@ -107,7 +113,7 @@
   branch = "master"
   name = "github.com/spf13/afero"
   packages = [".","mem"]
-  revision = "36f8810e2e3d7eeac4ac05b57f65690fbfba62a2"
+  revision = "ee1bd8ee15a1306d1f9201acc41ef39cd9f99a1b"
 
 [[projects]]
   name = "github.com/spf13/cast"
@@ -119,13 +125,13 @@
   branch = "master"
   name = "github.com/spf13/cobra"
   packages = ["."]
-  revision = "2df9a531813370438a4d79bfc33e21f58063ed87"
+  revision = "3c0b56b677e04926dfa835a1b3f11cd4f62f076e"
 
 [[projects]]
   branch = "master"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
-  revision = "0efa5202c04663c757d84f90f5219c1250baf94f"
+  revision = "12bd96e66386c1960ab0f74ced1362f66f552f7b"
 
 [[projects]]
   name = "github.com/spf13/pflag"
@@ -155,13 +161,13 @@
   branch = "master"
   name = "golang.org/x/sys"
   packages = ["unix"]
-  revision = "2d6f6f883a06fc0d5f4b14a81e4c28705ea64c15"
+  revision = "7ddbeae9ae08c6a06a59597f0c9edbc5ff2444ce"
 
 [[projects]]
   branch = "master"
   name = "golang.org/x/text"
   packages = ["internal/gen","internal/triegen","internal/ucd","transform","unicode/cldr","unicode/norm"]
-  revision = "ac87088df8ef557f1e32cd00ed0b6fbc3f7ddafb"
+  revision = "bd91bbf73e9a4a801adbfb97133c992678533126"
 
 [[projects]]
   name = "gopkg.in/h2non/gock.v1"
@@ -178,6 +184,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "fe0c38f46a10e79ddfd7449f98bcde02dbac62ec20cb9d957f661c6da079013f"
+  inputs-digest = "dd545fafc23f9b6429b5b679ad5c213c14c819f1e4ea381823acf338651122e1"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -17,10 +17,11 @@ ignored = ["elyby/minecraft-skinsystem"]
   name = "github.com/spf13/viper"
 
 [[constraint]]
-  name = "github.com/streadway/amqp"
+  name = "github.com/getsentry/raven-go"
 
 [[constraint]]
-  name = "github.com/getsentry/raven-go"
+  name = "github.com/assembla/cony"
+  version = "^0.3.2"
 
 # Testing dependencies
 

bootstrap/bootstrap.go

@@ -5,12 +5,12 @@ import (
 	"net/url"
 	"os"
 
+	"github.com/assembla/cony"
 	"github.com/getsentry/raven-go"
 	"github.com/mono83/slf/rays"
 	"github.com/mono83/slf/recievers/ansi"
 	"github.com/mono83/slf/recievers/statsd"
 	"github.com/mono83/slf/wd"
-	"github.com/streadway/amqp"
 
 	"elyby/minecraft-skinsystem/logger/receivers/sentry"
 )
@@ -72,7 +72,7 @@ type RabbitMQConfig struct {
 	Vhost string
 }
 
-func CreateRabbitMQChannel(config *RabbitMQConfig) (*amqp.Channel, error) {
+func CreateRabbitMQClient(config *RabbitMQConfig) *cony.Client {
 	addr := fmt.Sprintf(
 		"amqp://%s:%s@%s:%d/%s",
 		config.Username,
@@ -82,15 +82,7 @@ func CreateRabbitMQChannel(config *RabbitMQConfig) (*amqp.Channel, error) {
 		url.PathEscape(config.Vhost),
 	)
 
-	rabbitConnection, err := amqp.Dial(addr)
-	if err != nil {
-		return nil, err
-	}
+	client := cony.NewClient(cony.URL(addr), cony.Backoff(cony.DefaultBackoff))
 
-	rabbitChannel, err := rabbitConnection.Channel()
-	if err != nil {
-		return nil, err
-	}
-
-	return rabbitChannel, nil
+	return client
 }

cmd/amqpWorker.go

@@ -33,19 +33,14 @@ var amqpWorkerCmd = &cobra.Command{
 		}
 		logger.Info("Skins repository successfully initialized")
 
-		logger.Info("Initializing AMQP connection")
-		amqpChannel, err := bootstrap.CreateRabbitMQChannel(&bootstrap.RabbitMQConfig{
+		logger.Info("Creating AMQP client")
+		amqpClient := bootstrap.CreateRabbitMQClient(&bootstrap.RabbitMQConfig{
 			Host:     viper.GetString("amqp.host"),
 			Port:     viper.GetInt("amqp.port"),
 			Username: viper.GetString("amqp.username"),
 			Password: viper.GetString("amqp.password"),
 			Vhost:    viper.GetString("amqp.vhost"),
 		})
-		if err != nil {
-			logger.Emergency(fmt.Sprintf("Error on connecting AMQP: %+v", err))
-			return
-		}
-		logger.Info("AMQP connection successfully initialized")
 
 		accountsApi := (&accounts.Config{
 			Addr:   viper.GetString("api.accounts.host"),
@@ -56,7 +51,7 @@ var amqpWorkerCmd = &cobra.Command{
 
 		services := &worker.Services{
 			Logger:      logger,
-			Channel:     amqpChannel,
+			AmqpClient:  amqpClient,
 			SkinsRepo:   skinsRepo,
 			AccountsAPI: accountsApi,
 		}

worker/worker.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"strconv"
 
+	"github.com/assembla/cony"
 	"github.com/mono83/slf/wd"
 	"github.com/streadway/amqp"
 
@@ -13,7 +14,7 @@ import (
 )
 
 type Services struct {
-	Channel     *amqp.Channel
+	AmqpClient  *cony.Client
 	SkinsRepo   interfaces.SkinsRepository
 	AccountsAPI interfaces.AccountsAPI
 	Logger      wd.Watchdog
@@ -42,18 +43,28 @@ const exchangeName string = "events"
 const queueName string = "skinsystem-accounts-events"
 
 func (service *Services) Run() error {
-	deliveryChannel, err := setupConsume(service.Channel)
-	if err != nil {
+	clientErrs, consumerErrs, deliveryChannel := setupClient(service.AmqpClient)
+	shouldReturnError := true
+
+	for service.AmqpClient.Loop() {
+		select {
+		case msg := <-deliveryChannel:
+			shouldReturnError = false
+			service.HandleDelivery(&msg)
+		case err := <-consumerErrs:
+			if shouldReturnError {
 				return err
 			}
 
-	forever := make(chan bool)
-	go func() {
-		for d := range deliveryChannel {
-			service.HandleDelivery(&d)
+			service.Logger.Error("Consume error: :err", wd.ErrParam(err))
+		case err := <-clientErrs:
+			if shouldReturnError {
+				return err
+			}
+
+			service.Logger.Error("Client error: :err", wd.ErrParam(err))
+		}
 	}
-	}()
-	<-forever
 
 	return nil
 }
@@ -163,55 +174,47 @@ func (service *Services) HandleSkinChanged(event *SkinChanged) bool {
 	return true
 }
 
-func setupConsume(channel *amqp.Channel) (<-chan amqp.Delivery, error) {
-	var err error
-	err = channel.ExchangeDeclare(
-		exchangeName, // name
-		"topic",      // type
-		true,         // durable
-		false,        // auto-deleted
-		false,        // internal
-		false,        // no-wait
-		nil,          // arguments
+func setupClient(client *cony.Client) (<-chan error, <-chan error, <-chan amqp.Delivery ) {
+	exchange := cony.Exchange{
+		Name:       exchangeName,
+		Kind:       "topic",
+		Durable:    true,
+		AutoDelete: false,
+	}
+
+	queue := &cony.Queue{
+		Name:       queueName,
+		Durable:    true,
+		AutoDelete: false,
+		Exclusive:  false,
+	}
+
+	usernameEventBinding := cony.Binding{
+		Exchange: exchange,
+		Queue:    queue,
+		Key:      "accounts.username-changed",
+	}
+
+	skinEventBinding := cony.Binding{
+		Exchange: exchange,
+		Queue:    queue,
+		Key:      "accounts.skin-changed",
+	}
+
+	declarations := []cony.Declaration{
+		cony.DeclareExchange(exchange),
+		cony.DeclareQueue(queue),
+		cony.DeclareBinding(usernameEventBinding),
+		cony.DeclareBinding(skinEventBinding),
+	}
+
+	client.Declare(declarations)
+
+	consumer := cony.NewConsumer(queue,
+		cony.Qos(10),
+		cony.AutoTag(),
 	)
-	if err != nil {
-		return nil, err
-	}
+	client.Consume(consumer)
 
-	_, err = channel.QueueDeclare(
-		queueName, // name
-		true,      // durable
-		false,     // delete when usused
-		false,     // exclusive
-		false,     // no-wait
-		nil,       // arguments
-	)
-	if err != nil {
-		return nil, err
-	}
-
-	err = channel.QueueBind(queueName, "accounts.username-changed", exchangeName, false, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	err = channel.QueueBind(queueName, "accounts.skin-changed", exchangeName, false, nil)
-	if err != nil {
-		return nil, err
-	}
-
-	deliveryChannel, err := channel.Consume(
-		queueName, // queue
-		"",        // consumer
-		false,     // auto-ack
-		false,     // exclusive
-		false,     // no-local
-		false,     // no-wait
-		nil,       // args
-	)
-	if err != nil {
-		return nil, err
-	}
-
-	return deliveryChannel, nil
+	return client.Errors(), consumer.Errors(), consumer.Deliveries()
 }