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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,17 +1,155 @@ | ||
| package rabbitmq | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "flag" | ||
| "fmt" | ||
| "github.com/dmportella/docker-beat/logging" | ||
| "github.com/dmportella/docker-beat/plugin" | ||
| _ "github.com/streadway/amqp" // Not currently used | ||
| "github.com/streadway/amqp" | ||
| ) | ||
|
|
||
| var ( | ||
| rabbitmqEndpoint string | ||
| rabbitmqExchange string | ||
| rabbitmqExchangeType string | ||
| rabbitmqRoutingKey string | ||
| rabbitmqReliable bool | ||
| ) | ||
|
|
||
| const ( | ||
| defaultRabbitmqEndpoint = "amqp://guest:guest@localhost:5672/" | ||
| rabbitmqEndpointUsage = "rabbitmq: The URL that events will be published too." | ||
|
|
||
| defaultRabbitmqExchange = "docker-beat" | ||
| rabbitmqExchangeUsage = "rabbitmq: The exchange docker-beat will publish messages too." | ||
|
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| defaultRabbitmqExchangeType = "fanout" | ||
| rabbitmqExchangeTypeUsage = "rabbitmq: The exchange type that docker-beat will create/connect too. (direct|fanout|topic|x-custom)" | ||
|
|
||
| defaultRabbitmqRoutingKey = "docker-event" | ||
| rabbitmqRoutingKeyUsage = "rabbitmq: The routing key for messages published to the exchange. (default: docker-event" | ||
|
|
||
| defaultRabbitmqReliable = false | ||
| rabbitmqReliableUsage = "rabbitmq: The ensures messages published are confirmed." | ||
| ) | ||
|
|
||
| type consumer struct { | ||
| Debug bool | ||
| Indent bool | ||
| endpoint string | ||
| exchange string | ||
| exchangeType string | ||
| routingKey string | ||
| reliable bool | ||
| connection *amqp.Connection | ||
| } | ||
|
|
||
| func (consumer *consumer) OnEvent(event plugin.DockerEvent) { | ||
| var data []byte | ||
|
|
||
| if consumer.Indent { | ||
| data, _ = json.MarshalIndent(event, "", " ") | ||
| } else { | ||
| data, _ = json.Marshal(event) | ||
| } | ||
|
|
||
| err := consumer.publish(data) | ||
| if err != nil { | ||
| logging.Error.Printf("Error publishing event '%s'\n", err) | ||
| } | ||
| } | ||
|
|
||
| func init() { | ||
| // do something here | ||
| flag.StringVar(&rabbitmqEndpoint, "rabbitmq-endpoint", defaultRabbitmqEndpoint, rabbitmqEndpointUsage) | ||
| flag.StringVar(&rabbitmqExchange, "rabbitmq-exchange", defaultRabbitmqExchange, rabbitmqExchangeUsage) | ||
| flag.StringVar(&rabbitmqExchangeType, "rabbitmq-exchange-type", defaultRabbitmqExchangeType, rabbitmqExchangeTypeUsage) | ||
| flag.StringVar(&rabbitmqRoutingKey, "rabbitmq-routing-key", defaultRabbitmqRoutingKey, rabbitmqRoutingKeyUsage) | ||
| flag.BoolVar(&rabbitmqReliable, "rabbitmq-reliable", defaultRabbitmqReliable, rabbitmqReliableUsage) | ||
|
|
||
| consumer := &consumer{ | ||
| endpoint: rabbitmqEndpoint, | ||
| exchange: rabbitmqExchange, | ||
| exchangeType: rabbitmqExchangeType, | ||
| routingKey: rabbitmqRoutingKey, | ||
| reliable: rabbitmqReliable, | ||
| } | ||
|
|
||
| plugin.RegisterConsumer("rabbitmq", consumer) | ||
| } | ||
|
|
||
| func (consumer *consumer) publish(body []byte) error { | ||
| if consumer.connection == nil { | ||
| consumer.endpoint = rabbitmqEndpoint | ||
| consumer.exchange = rabbitmqExchange | ||
| consumer.exchangeType = rabbitmqExchangeType | ||
| consumer.routingKey = rabbitmqRoutingKey | ||
| consumer.reliable = rabbitmqReliable | ||
|
|
||
| connection, err := amqp.Dial(consumer.endpoint) | ||
| if err != nil { | ||
| return fmt.Errorf("Dial: %s", err) | ||
| } | ||
|
|
||
| consumer.connection = connection | ||
| } | ||
|
|
||
| channel, err := consumer.connection.Channel() | ||
| if err != nil { | ||
| return fmt.Errorf("Channel: %s", err) | ||
| } | ||
|
|
||
| if err := channel.ExchangeDeclare( | ||
| consumer.exchange, // name | ||
| consumer.exchangeType, // type | ||
| true, // durable | ||
| false, // auto-deleted | ||
| false, // internal | ||
| false, // noWait | ||
| nil, // arguments | ||
| ); err != nil { | ||
| return fmt.Errorf("Exchange Declare: %s", err) | ||
| } | ||
|
|
||
| // Reliable publisher confirms require confirm.select support from the | ||
| // connection. | ||
| if consumer.reliable { | ||
| if err := channel.Confirm(false); err != nil { | ||
| return fmt.Errorf("Channel could not be put into confirm mode: %s", err) | ||
| } | ||
|
|
||
| confirms := channel.NotifyPublish(make(chan amqp.Confirmation, 1)) | ||
|
|
||
| defer confirmOne(confirms) | ||
| } | ||
|
|
||
| if err = channel.Publish( | ||
| consumer.exchange, // publish to an exchange | ||
| consumer.routingKey, // routing to 0 or more queues | ||
| false, // mandatory | ||
| false, // immediate | ||
| amqp.Publishing{ | ||
| Headers: amqp.Table{}, | ||
| ContentType: "application/json", | ||
| ContentEncoding: "utf-8", | ||
| Body: body, | ||
| DeliveryMode: amqp.Transient, // 1=non-persistent, 2=persistent | ||
| Priority: 0, // 0-9 | ||
| // a bunch of application/implementation-specific fields | ||
| }, | ||
| ); err != nil { | ||
| return fmt.Errorf("Exchange Publish: %s", err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func confirmOne(confirms <-chan amqp.Confirmation) { | ||
| logging.Info.Printf("Waiting for confirmation of one publishing.") | ||
|
|
||
| if confirmed := <-confirms; confirmed.Ack { | ||
| logging.Info.Printf("Confirmed delivery with delivery tag: %d", confirmed.DeliveryTag) | ||
| } else { | ||
| logging.Error.Printf("Failed delivery of delivery tag: %d", confirmed.DeliveryTag) | ||
| } | ||
| } |
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