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114 lines
3.3 KiB
114 lines
3.3 KiB
package sub
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/sqs"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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"google.golang.org/protobuf/proto"
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)
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func init() {
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NotificationInputs = append(NotificationInputs, &AwsSqsInput{})
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}
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type AwsSqsInput struct {
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svc *sqs.SQS
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queueUrl string
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}
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func (k *AwsSqsInput) GetName() string {
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return "aws_sqs"
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}
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func (k *AwsSqsInput) Initialize(configuration util.Configuration, prefix string) error {
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glog.V(0).Infof("replication.notification.aws_sqs.region: %v", configuration.GetString(prefix+"region"))
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glog.V(0).Infof("replication.notification.aws_sqs.sqs_queue_name: %v", configuration.GetString(prefix+"sqs_queue_name"))
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return k.initialize(
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configuration.GetString(prefix+"aws_access_key_id"),
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configuration.GetString(prefix+"aws_secret_access_key"),
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configuration.GetString(prefix+"region"),
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configuration.GetString(prefix+"sqs_queue_name"),
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)
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}
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func (k *AwsSqsInput) initialize(awsAccessKeyId, awsSecretAccessKey, region, queueName string) (err error) {
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config := &aws.Config{
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Region: aws.String(region),
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S3DisableContentMD5Validation: aws.Bool(true),
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}
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if awsAccessKeyId != "" && awsSecretAccessKey != "" {
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config.Credentials = credentials.NewStaticCredentials(awsAccessKeyId, awsSecretAccessKey, "")
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}
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sess, err := session.NewSession(config)
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if err != nil {
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return fmt.Errorf("create aws session: %v", err)
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}
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k.svc = sqs.New(sess)
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result, err := k.svc.GetQueueUrl(&sqs.GetQueueUrlInput{
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QueueName: aws.String(queueName),
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})
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if err != nil {
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if aerr, ok := err.(awserr.Error); ok && aerr.Code() == sqs.ErrCodeQueueDoesNotExist {
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return fmt.Errorf("unable to find queue %s", queueName)
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}
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return fmt.Errorf("get queue %s url: %v", queueName, err)
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}
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k.queueUrl = *result.QueueUrl
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return nil
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}
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func (k *AwsSqsInput) ReceiveMessage() (key string, message *filer_pb.EventNotification, onSuccessFn func(), onFailureFn func(), err error) {
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// receive message
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result, err := k.svc.ReceiveMessage(&sqs.ReceiveMessageInput{
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AttributeNames: []*string{
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aws.String(sqs.MessageSystemAttributeNameSentTimestamp),
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},
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MessageAttributeNames: []*string{
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aws.String(sqs.QueueAttributeNameAll),
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},
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QueueUrl: &k.queueUrl,
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MaxNumberOfMessages: aws.Int64(1),
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VisibilityTimeout: aws.Int64(20), // 20 seconds
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WaitTimeSeconds: aws.Int64(20),
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})
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if err != nil {
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err = fmt.Errorf("receive message from sqs %s: %v", k.queueUrl, err)
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return
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}
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if len(result.Messages) == 0 {
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return
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}
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// process the message
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// fmt.Printf("messages: %+v\n", result.Messages[0])
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keyValue := result.Messages[0].MessageAttributes["key"]
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key = *keyValue.StringValue
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text := *result.Messages[0].Body
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message = &filer_pb.EventNotification{}
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err = proto.Unmarshal([]byte(text), message)
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// delete the message
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_, err = k.svc.DeleteMessage(&sqs.DeleteMessageInput{
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QueueUrl: &k.queueUrl,
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ReceiptHandle: result.Messages[0].ReceiptHandle,
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})
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if err != nil {
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glog.V(1).Infof("delete message from sqs %s: %v", k.queueUrl, err)
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}
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return
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}
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