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92 lines
2.8 KiB
92 lines
2.8 KiB
package s3api
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import (
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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func (s3a *S3ApiServer) subscribeMetaEvents(clientName string, lastTsNs int64, prefix string, directoriesToWatch []string) {
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processEventFn := func(resp *filer_pb.SubscribeMetadataResponse) error {
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message := resp.EventNotification
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if message.NewEntry == nil {
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return nil
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}
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dir := resp.Directory
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if message.NewParentPath != "" {
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dir = message.NewParentPath
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}
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fileName := message.NewEntry.Name
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content := message.NewEntry.Content
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_ = s3a.onIamConfigUpdate(dir, fileName, content)
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_ = s3a.onCircuitBreakerConfigUpdate(dir, fileName, content)
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_ = s3a.onBucketMetadataChange(dir, message.OldEntry, message.NewEntry)
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return nil
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}
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var clientEpoch int32
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metadataFollowOption := &pb.MetadataFollowOption{
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ClientName: clientName,
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ClientId: s3a.randomClientId,
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ClientEpoch: clientEpoch,
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SelfSignature: 0,
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PathPrefix: prefix,
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AdditionalPathPrefixes: nil,
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DirectoriesToWatch: directoriesToWatch,
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StartTsNs: lastTsNs,
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StopTsNs: 0,
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EventErrorType: pb.FatalOnError,
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}
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util.RetryForever("followIamChanges", func() error {
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clientEpoch++
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return pb.WithFilerClientFollowMetadata(s3a, metadataFollowOption, processEventFn)
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}, func(err error) bool {
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glog.V(0).Infof("iam follow metadata changes: %v", err)
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return true
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})
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}
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// reload iam config
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func (s3a *S3ApiServer) onIamConfigUpdate(dir, filename string, content []byte) error {
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if dir == filer.IamConfigDirectory && filename == filer.IamIdentityFile {
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if err := s3a.iam.LoadS3ApiConfigurationFromBytes(content); err != nil {
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return err
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}
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glog.V(0).Infof("updated %s/%s", dir, filename)
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}
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return nil
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}
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// reload circuit breaker config
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func (s3a *S3ApiServer) onCircuitBreakerConfigUpdate(dir, filename string, content []byte) error {
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if dir == s3_constants.CircuitBreakerConfigDir && filename == s3_constants.CircuitBreakerConfigFile {
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if err := s3a.cb.LoadS3ApiConfigurationFromBytes(content); err != nil {
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return err
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}
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glog.V(0).Infof("updated %s/%s", dir, filename)
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}
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return nil
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}
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// reload bucket metadata
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func (s3a *S3ApiServer) onBucketMetadataChange(dir string, oldEntry *filer_pb.Entry, newEntry *filer_pb.Entry) error {
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if dir == s3a.option.BucketsPath {
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if newEntry != nil {
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s3a.bucketRegistry.LoadBucketMetadata(newEntry)
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glog.V(0).Infof("updated bucketMetadata %s/%s", dir, newEntry)
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} else {
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s3a.bucketRegistry.RemoveBucketMetadata(oldEntry)
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glog.V(0).Infof("remove bucketMetadata %s/%s", dir, newEntry)
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}
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}
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return nil
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}
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