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c3bbadacbf
* Check for RPC connection shutdown and try again just once. * Refactor SendRPC to use sync.WaitGroup
94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"fmt"
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"io/ioutil"
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"net/rpc"
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"github.com/Sirupsen/logrus"
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)
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type listenerConn struct {
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TargetAddr string
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ListenerARN string
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}
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type listenerLogger struct {
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log *logrus.Logger
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lconn listenerConn
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}
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func newListenerLogger(listenerArn, targetAddr string) (*listenerLogger, error) {
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if globalS3Peers.GetPeerClient(targetAddr) == nil {
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return nil, fmt.Errorf(
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"Peer %s was not initialized - bug!",
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targetAddr,
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)
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}
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lc := listenerConn{
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TargetAddr: targetAddr,
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ListenerARN: listenerArn,
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}
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lcLog := logrus.New()
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lcLog.Out = ioutil.Discard
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lcLog.Formatter = new(logrus.JSONFormatter)
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lcLog.Hooks.Add(lc)
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return &listenerLogger{lcLog, lc}, nil
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}
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// send event to target server via rpc client calls.
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func (lc listenerConn) Fire(entry *logrus.Entry) error {
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notificationEvent, ok := entry.Data["Records"].([]NotificationEvent)
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if !ok {
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// If the record is not of the expected type, silently
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// discard.
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return nil
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}
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// Fetch peer client object
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client := globalS3Peers.GetPeerClient(lc.TargetAddr)
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if client == nil {
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return fmt.Errorf("Target %s client RPC object not available!", lc.TargetAddr)
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}
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// Send Event RPC call and return error
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arg := EventArgs{Event: notificationEvent, Arn: lc.ListenerARN}
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reply := GenericReply{}
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err := client.Call("S3.Event", &arg, &reply)
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// In case connection is shutdown, retry once.
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if err != nil {
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if err.Error() == rpc.ErrShutdown.Error() {
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err = client.Call("S3.Event", &arg, &reply)
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}
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}
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return err
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}
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func (lc listenerConn) Levels() []logrus.Level {
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return []logrus.Level{
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logrus.InfoLevel,
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}
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}
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