1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.zookeeper.server.quorum;
import java.io.Flushable;
import java.io.IOException;
import java.net.Socket;
import org.apache.zookeeper.ZooDefs.OpCode;
import org.apache.zookeeper.server.Request;
import org.apache.zookeeper.server.RequestProcessor;
import org.apache.zookeeper.server.ServerMetrics;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SendAckRequestProcessor implements RequestProcessor, Flushable {
private static final Logger LOG = LoggerFactory.getLogger(SendAckRequestProcessor.class);
final Learner learner;
SendAckRequestProcessor(Learner peer) {
this.learner = peer;
}
public void processRequest(Request si) {
if (si.type != OpCode.sync) {
QuorumPacket qp = new QuorumPacket(Leader.ACK, si.getHdr().getZxid(), null, null);
try {
si.logLatency(ServerMetrics.getMetrics().PROPOSAL_ACK_CREATION_LATENCY);
learner.writePacket(qp, false);
} catch (IOException e) {
LOG.warn("Closing connection to leader, exception during packet send", e);
try {
if (!learner.sock.isClosed()) {
learner.sock.close();
}
} catch (IOException e1) {
// Nothing to do, we are shutting things down, so an exception here is irrelevant
LOG.debug("Ignoring error closing the connection", e1);
}
}
}
}
public void flush() throws IOException {
try {
learner.writePacket(null, true);
} catch (IOException e) {
LOG.warn("Closing connection to leader, exception during packet send", e);
try {
Socket socket = learner.sock;
if (socket != null && !socket.isClosed()) {
learner.sock.close();
}
} catch (IOException e1) {
// Nothing to do, we are shutting things down, so an exception here is irrelevant
LOG.debug("Ignoring error closing the connection", e1);
}
}
}
public void shutdown() {
// Nothing needed
}
}
|
