mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-06-23 19:11:40 +02:00
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
// Package gocdk_pub_sub supports the Go CDK (Cloud Development Kit) PubSub API,
|
|
// which in turn supports many providers, including Amazon SNS/SQS, Azure Service Bus,
|
|
// Google Cloud PubSub, and RabbitMQ.
|
|
//
|
|
// In the config, select a provider and topic using a URL. See
|
|
// https://godoc.org/gocloud.dev/pubsub and its sub-packages for details.
|
|
//
|
|
// The Go CDK PubSub API does not support administrative operations like topic
|
|
// creation. Create the topic using a UI, CLI or provider-specific API before running
|
|
// weed.
|
|
//
|
|
// The Go CDK obtains credentials via environment variables and other
|
|
// provider-specific default mechanisms. See the provider's documentation for
|
|
// details.
|
|
package gocdk_pub_sub
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/golang/protobuf/proto"
|
|
"gocloud.dev/pubsub"
|
|
_ "gocloud.dev/pubsub/awssnssqs"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/notification"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
// _ "gocloud.dev/pubsub/azuresb"
|
|
_ "gocloud.dev/pubsub/gcppubsub"
|
|
_ "gocloud.dev/pubsub/natspubsub"
|
|
_ "gocloud.dev/pubsub/rabbitpubsub"
|
|
)
|
|
|
|
func init() {
|
|
notification.MessageQueues = append(notification.MessageQueues, &GoCDKPubSub{})
|
|
}
|
|
|
|
type GoCDKPubSub struct {
|
|
topicURL string
|
|
topic *pubsub.Topic
|
|
}
|
|
|
|
func (k *GoCDKPubSub) GetName() string {
|
|
return "gocdk_pub_sub"
|
|
}
|
|
|
|
func (k *GoCDKPubSub) Initialize(configuration util.Configuration, prefix string) error {
|
|
k.topicURL = configuration.GetString(prefix + "topic_url")
|
|
glog.V(0).Infof("notification.gocdk_pub_sub.topic_url: %v", k.topicURL)
|
|
topic, err := pubsub.OpenTopic(context.Background(), k.topicURL)
|
|
if err != nil {
|
|
glog.Fatalf("Failed to open topic: %v", err)
|
|
}
|
|
k.topic = topic
|
|
return nil
|
|
}
|
|
|
|
func (k *GoCDKPubSub) SendMessage(key string, message proto.Message) error {
|
|
bytes, err := proto.Marshal(message)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
ctx := context.Background()
|
|
err = k.topic.Send(ctx, &pubsub.Message{
|
|
Body: bytes,
|
|
Metadata: map[string]string{"key": key},
|
|
})
|
|
if err != nil {
|
|
return fmt.Errorf("send message via Go CDK pubsub %s: %v", k.topicURL, err)
|
|
}
|
|
return nil
|
|
}
|