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Auto-reconnect for regular authRPC client. (#3506)

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Implement a storage rpc specific rpc client,
which does not reconnect unnecessarily.

Instead reconnect is handled at a different
layer for storage alone.

Rest of the calls using AuthRPC automatically
reconnect, i.e upon an error equal to `rpc.ErrShutdown`
they dial again and call the requested method again.
This commit is contained in:
Harshavardhana
2016-12-29 19:42:02 -08:00
committed by GitHub
parent 41cf580bb1
commit dd68cdd802
5 changed files with 155 additions and 90 deletions
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49
cmd/bucket-metadata.go
View File

@@ -16,10 +16,7 @@
package cmd
import (
"encoding/json"
"net/rpc"
)
import "encoding/json"
// BucketMetaState - Interface to update bucket metadata in-memory
// state.
@@ -112,62 +109,26 @@ type remoteBucketMetaState struct {
// change to remote peer via RPC call.
func (rc *remoteBucketMetaState) UpdateBucketNotification(args *SetBucketNotificationPeerArgs) error {
reply := GenericReply{}
err := rc.Call("S3.SetBucketNotificationPeer", args, &reply)
// Check for network error and retry once.
if err != nil && err == rpc.ErrShutdown {
// Close the underlying connection to attempt once more.
rc.Close()
// Attempt again and proceed.
err = rc.Call("S3.SetBucketNotificationPeer", args, &reply)
}
return err
return rc.Call("S3.SetBucketNotificationPeer", args, &reply)
}
// remoteBucketMetaState.UpdateBucketListener - sends bucket listener change to
// remote peer via RPC call.
func (rc *remoteBucketMetaState) UpdateBucketListener(args *SetBucketListenerPeerArgs) error {
reply := GenericReply{}
err := rc.Call("S3.SetBucketListenerPeer", args, &reply)
// Check for network error and retry once.
if err != nil && err == rpc.ErrShutdown {
// Close the underlying connection to attempt once more.
rc.Close()
// Attempt again and proceed.
err = rc.Call("S3.SetBucketListenerPeer", args, &reply)
}
return err
return rc.Call("S3.SetBucketListenerPeer", args, &reply)
}
// remoteBucketMetaState.UpdateBucketPolicy - sends bucket policy change to remote
// peer via RPC call.
func (rc *remoteBucketMetaState) UpdateBucketPolicy(args *SetBucketPolicyPeerArgs) error {
reply := GenericReply{}
err := rc.Call("S3.SetBucketPolicyPeer", args, &reply)
// Check for network error and retry once.
if err != nil && err == rpc.ErrShutdown {
// Close the underlying connection to attempt once more.
rc.Close()
// Attempt again and proceed.
err = rc.Call("S3.SetBucketPolicyPeer", args, &reply)
}
return err
return rc.Call("S3.SetBucketPolicyPeer", args, &reply)
}
// remoteBucketMetaState.SendEvent - sends event for bucket listener to remote
// peer via RPC call.
func (rc *remoteBucketMetaState) SendEvent(args *EventArgs) error {
reply := GenericReply{}
err := rc.Call("S3.Event", args, &reply)
// Check for network error and retry once.
if err != nil && err == rpc.ErrShutdown {
// Close the underlying connection to attempt once more.
rc.Close()
// Attempt again and proceed.
err = rc.Call("S3.Event", args, &reply)
}
return err
return rc.Call("S3.Event", args, &reply)
}