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
|
// 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.gerrit.common.FileUtil;
import com.google.gerrit.server.config.SitePaths;
import com.google.gerrit.server.git.WorkQueue;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.List;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Singleton
public class AutoReloadConfigDecorator implements ReplicationConfig {
private static final Logger log = LoggerFactory.getLogger(AutoReloadConfigDecorator.class);
private ReplicationFileBasedConfig currentConfig;
private long currentConfigTs;
private final SitePaths site;
private final WorkQueue workQueue;
private final DestinationFactory destinationFactory;
@Inject
public AutoReloadConfigDecorator(
SitePaths site, WorkQueue workQueue, DestinationFactory destinationFactory)
throws ConfigInvalidException, IOException {
this.site = site;
this.destinationFactory = destinationFactory;
this.currentConfig = loadConfig();
this.currentConfigTs = getLastModified(currentConfig);
this.workQueue = workQueue;
}
private static long getLastModified(ReplicationFileBasedConfig cfg) {
return FileUtil.lastModified(cfg.getCfgPath());
}
private ReplicationFileBasedConfig loadConfig() throws ConfigInvalidException, IOException {
return new ReplicationFileBasedConfig(site, destinationFactory);
}
private synchronized boolean isAutoReload() {
return currentConfig.getConfig().getBoolean("gerrit", "autoReload", false);
}
@Override
public synchronized List<Destination> getDestinations(FilterType filterType) {
reloadIfNeeded();
return currentConfig.getDestinations(filterType);
}
private void reloadIfNeeded() {
try {
if (isAutoReload()) {
long lastModified = getLastModified(currentConfig);
if (lastModified > currentConfigTs) {
ReplicationFileBasedConfig newConfig = loadConfig();
newConfig.startup(workQueue);
int discarded = currentConfig.shutdown();
this.currentConfig = newConfig;
this.currentConfigTs = lastModified;
log.info(
"Configuration reloaded: {} destinations, {} replication events discarded",
currentConfig.getDestinations(FilterType.ALL).size(),
discarded);
}
}
} catch (Exception e) {
log.error("Cannot reload replication configuration: keeping existing settings", e);
return;
}
}
@Override
public synchronized boolean isReplicateAllOnPluginStart() {
return currentConfig.isReplicateAllOnPluginStart();
}
@Override
public synchronized boolean isDefaultForceUpdate() {
return currentConfig.isDefaultForceUpdate();
}
@Override
public synchronized boolean isEmpty() {
return currentConfig.isEmpty();
}
@Override
public synchronized int shutdown() {
return currentConfig.shutdown();
}
@Override
public synchronized void startup(WorkQueue workQueue) {
currentConfig.startup(workQueue);
}
}
|
