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package sub
import (
"context"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/golang/protobuf/proto"
"gocloud.dev/pubsub"
_ "gocloud.dev/pubsub/awssnssqs"
// _ "gocloud.dev/pubsub/azuresb"
_ "gocloud.dev/pubsub/gcppubsub"
_ "gocloud.dev/pubsub/natspubsub"
_ "gocloud.dev/pubsub/rabbitpubsub"
)
func init() {
NotificationInputs = append(NotificationInputs, &GoCDKPubSubInput{})
}
type GoCDKPubSubInput struct {
sub *pubsub.Subscription
}
func (k *GoCDKPubSubInput) GetName() string {
return "gocdk_pub_sub"
}
func (k *GoCDKPubSubInput) Initialize(configuration util.Configuration, prefix string) error {
subURL := configuration.GetString(prefix + "sub_url")
glog.V(0).Infof("notification.gocdk_pub_sub.sub_url: %v", subURL)
sub, err := pubsub.OpenSubscription(context.Background(), subURL)
if err != nil {
return err
}
k.sub = sub
return nil
}
func (k *GoCDKPubSubInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, err error) {
msg, err := k.sub.Receive(context.Background())
key = msg.Metadata["key"]
message = &filer_pb.EventNotification{}
err = proto.Unmarshal(msg.Body, message)
if err != nil {
return "", nil, err
}
return key, message, nil
}
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