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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// Copyright (C) 2013 The Android Open Source Project
//
// Licensed 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 com.googlesource.gerrit.plugins.replication;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.google.gerrit.extensions.annotations.PluginName;
import com.google.gerrit.extensions.events.LifecycleListener;
import com.google.gerrit.server.git.WorkQueue;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.googlesource.gerrit.plugins.replication.api.ReplicationConfig;
import java.nio.file.Path;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import org.eclipse.jgit.lib.Config;
@Singleton
public class AutoReloadConfigDecorator implements ReplicationConfig, LifecycleListener {
private static final long RELOAD_DELAY = 120;
private static final long RELOAD_INTERVAL = 60;
private volatile ReplicationConfig currentConfig;
private final ScheduledExecutorService autoReloadExecutor;
private ScheduledFuture<?> autoReloadRunnable;
private final AutoReloadRunnable reloadRunner;
@Inject
public AutoReloadConfigDecorator(
@PluginName String pluginName,
WorkQueue workQueue,
ReplicationConfigImpl replicationConfig,
AutoReloadRunnable reloadRunner,
EventBus eventBus) {
this.currentConfig = replicationConfig;
this.autoReloadExecutor = workQueue.createQueue(1, pluginName + "_auto-reload-config");
this.reloadRunner = reloadRunner;
eventBus.register(this);
}
@VisibleForTesting
public void reload() {
reloadRunner.reload();
}
@Override
public synchronized boolean isReplicateAllOnPluginStart() {
return currentConfig.isReplicateAllOnPluginStart();
}
@Override
public synchronized boolean isDefaultForceUpdate() {
return currentConfig.isDefaultForceUpdate();
}
@Override
public int getDistributionInterval() {
return currentConfig.getDistributionInterval();
}
@Override
public synchronized int getMaxRefsToLog() {
return currentConfig.getMaxRefsToLog();
}
@Override
public int getMaxRefsToShow() {
return currentConfig.getMaxRefsToShow();
}
@Override
public Path getEventsDirectory() {
return currentConfig.getEventsDirectory();
}
@Override
public synchronized void start() {
autoReloadRunnable =
autoReloadExecutor.scheduleAtFixedRate(
reloadRunner, RELOAD_DELAY, RELOAD_INTERVAL, TimeUnit.SECONDS);
}
@Override
public synchronized void stop() {
if (autoReloadRunnable != null) {
if (!autoReloadRunnable.cancel(true)) {
throw new IllegalStateException(
"Unable to cancel replication reload task: cannot guarantee orderly shutdown");
}
autoReloadRunnable = null;
}
}
@Override
public String getVersion() {
return currentConfig.getVersion();
}
@Subscribe
public void onReload(ReplicationConfig newConfig) {
currentConfig = newConfig;
}
@Override
public synchronized int getSshConnectionTimeout() {
return currentConfig.getSshConnectionTimeout();
}
@Override
public synchronized int getSshCommandTimeout() {
return currentConfig.getSshCommandTimeout();
}
@Override
public Config getConfig() {
return currentConfig.getConfig();
}
}
|
