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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
// Copyright 2015 The Bazel Authors. All rights reserved.
//
// 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.google.devtools.build.lib.bazel.repository;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.analysis.BlazeDirectories;
import com.google.devtools.build.lib.bazel.rules.workspace.MavenServerRule;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.repository.ExternalPackageException;
import com.google.devtools.build.lib.repository.ExternalPackageUtil;
import com.google.devtools.build.lib.repository.ExternalRuleNotFoundException;
import com.google.devtools.build.lib.rules.repository.RepositoryFunction.RepositoryFunctionException;
import com.google.devtools.build.lib.rules.repository.WorkspaceAttributeMapper;
import com.google.devtools.build.lib.skyframe.FileValue;
import com.google.devtools.build.lib.syntax.EvalException;
import com.google.devtools.build.lib.syntax.Type;
import com.google.devtools.build.lib.util.Fingerprint;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.lib.vfs.Root;
import com.google.devtools.build.lib.vfs.RootedPath;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException.Transience;
import com.google.devtools.build.skyframe.SkyFunctionName;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import java.io.IOException;
import java.util.Arrays;
import java.util.Map;
import javax.annotation.Nullable;
import org.apache.maven.settings.Server;
import org.apache.maven.settings.Settings;
import org.apache.maven.settings.building.DefaultSettingsBuilder;
import org.apache.maven.settings.building.DefaultSettingsBuilderFactory;
import org.apache.maven.settings.building.DefaultSettingsBuildingRequest;
import org.apache.maven.settings.building.SettingsBuildingException;
import org.apache.maven.settings.building.SettingsBuildingResult;
/**
* Implementation of maven_repository.
*/
public class MavenServerFunction implements SkyFunction {
public static final SkyFunctionName NAME = SkyFunctionName.create("MAVEN_SERVER_FUNCTION");
private static final String USER_KEY = "user";
private static final String SYSTEM_KEY = "system";
private final BlazeDirectories directories;
public MavenServerFunction(BlazeDirectories directories) {
this.directories = directories;
}
@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env)
throws InterruptedException, RepositoryFunctionException, ExternalPackageException {
String repository = (String) skyKey.argument();
Rule repositoryRule = null;
try {
repositoryRule = ExternalPackageUtil.getRuleByName(repository, env);
} catch (ExternalRuleNotFoundException ex) {
// Ignored. We throw a new one below.
}
if (env.valuesMissing()) {
return null;
}
String serverName;
String url;
Map<String, FileValue> settingsFiles;
boolean foundRepoRule = repositoryRule != null
&& repositoryRule.getRuleClass().equals(MavenServerRule.NAME);
if (!foundRepoRule) {
if (repository.equals(MavenServerValue.DEFAULT_ID)) {
settingsFiles = getDefaultSettingsFile(directories, env);
serverName = MavenServerValue.DEFAULT_ID;
url = MavenConnector.getMavenCentralRemote().getUrl();
} else {
throw new RepositoryFunctionException(
new IOException("Could not find maven repository " + repository),
Transience.TRANSIENT);
}
} else {
WorkspaceAttributeMapper mapper = WorkspaceAttributeMapper.of(repositoryRule);
serverName = repositoryRule.getName();
try {
url = mapper.get("url", Type.STRING);
if (!mapper.isAttributeValueExplicitlySpecified("settings_file")) {
settingsFiles = getDefaultSettingsFile(directories, env);
} else {
PathFragment settingsFilePath =
PathFragment.create(mapper.get("settings_file", Type.STRING));
RootedPath settingsPath =
RootedPath.toRootedPath(
Root.fromPath(directories.getWorkspace().getRelative(settingsFilePath)),
PathFragment.EMPTY_FRAGMENT);
FileValue fileValue = (FileValue) env.getValue(FileValue.key(settingsPath));
if (fileValue == null) {
return null;
}
if (!fileValue.exists()) {
throw new RepositoryFunctionException(
new IOException("Could not find settings file " + settingsPath),
Transience.TRANSIENT);
}
settingsFiles = ImmutableMap.<String, FileValue>builder().put(
USER_KEY, fileValue).build();
}
} catch (EvalException e) {
throw new RepositoryFunctionException(e, Transience.PERSISTENT);
}
}
if (settingsFiles == null) {
return null;
}
Fingerprint fingerprint = new Fingerprint();
try {
for (Map.Entry<String, FileValue> entry : settingsFiles.entrySet()) {
fingerprint.addString(entry.getKey());
Path path = entry.getValue().realRootedPath().asPath();
if (path.exists()) {
fingerprint.addBoolean(true);
fingerprint.addBytes(path.getDigest());
} else {
fingerprint.addBoolean(false);
}
}
} catch (IOException e) {
throw new RepositoryFunctionException(e, Transience.TRANSIENT);
}
byte[] fingerprintBytes = fingerprint.digestAndReset();
if (settingsFiles.isEmpty()) {
return new MavenServerValue(serverName, url, new Server(), fingerprintBytes);
}
DefaultSettingsBuildingRequest request = new DefaultSettingsBuildingRequest();
if (settingsFiles.containsKey(SYSTEM_KEY)) {
request.setGlobalSettingsFile(
settingsFiles.get(SYSTEM_KEY).realRootedPath().asPath().getPathFile());
}
if (settingsFiles.containsKey(USER_KEY)) {
request.setUserSettingsFile(
settingsFiles.get(USER_KEY).realRootedPath().asPath().getPathFile());
}
DefaultSettingsBuilder builder = (new DefaultSettingsBuilderFactory()).newInstance();
SettingsBuildingResult result;
try {
result = builder.build(request);
} catch (SettingsBuildingException e) {
throw new RepositoryFunctionException(
new IOException("Error parsing settings files: " + e.getMessage()),
Transience.TRANSIENT);
}
if (!result.getProblems().isEmpty()) {
throw new RepositoryFunctionException(
new IOException("Errors interpreting settings file: "
+ Arrays.toString(result.getProblems().toArray())), Transience.PERSISTENT);
}
Settings settings = result.getEffectiveSettings();
Server server = settings.getServer(serverName);
server = server == null ? new Server() : server;
return new MavenServerValue(serverName, url, server, fingerprintBytes);
}
private Map<String, FileValue> getDefaultSettingsFile(
BlazeDirectories directories, Environment env) throws InterruptedException {
// The system settings file is at $M2_HOME/conf/settings.xml.
String m2Home = System.getenv("M2_HOME");
ImmutableList.Builder<SkyKey> settingsFilesBuilder = ImmutableList.builder();
SkyKey systemKey = null;
if (m2Home != null) {
PathFragment mavenInstallSettings =
PathFragment.create(m2Home).getRelative("conf/settings.xml");
systemKey =
FileValue.key(
RootedPath.toRootedPath(
Root.fromPath(directories.getWorkspace().getRelative(mavenInstallSettings)),
PathFragment.EMPTY_FRAGMENT));
settingsFilesBuilder.add(systemKey);
}
// The user settings file is at $HOME/.m2/settings.xml.
String userHome = System.getenv("HOME");
SkyKey userKey = null;
if (userHome != null) {
PathFragment userSettings = PathFragment.create(userHome).getRelative(".m2/settings.xml");
userKey =
FileValue.key(
RootedPath.toRootedPath(
Root.fromPath(directories.getWorkspace().getRelative(userSettings)),
PathFragment.EMPTY_FRAGMENT));
settingsFilesBuilder.add(userKey);
}
ImmutableList<SkyKey> settingsFiles = settingsFilesBuilder.build();
if (settingsFiles.isEmpty()) {
return ImmutableMap.of();
}
Map<SkyKey, SkyValue> values = env.getValues(settingsFiles);
ImmutableMap.Builder<String, FileValue> settingsBuilder = ImmutableMap.builder();
for (Map.Entry<SkyKey, SkyValue> entry : values.entrySet()) {
if (entry.getValue() == null) {
return null;
}
if (systemKey != null && systemKey.equals(entry.getKey())) {
settingsBuilder.put(SYSTEM_KEY, (FileValue) entry.getValue());
} else if (userKey != null && userKey.equals(entry.getKey())) {
settingsBuilder.put(USER_KEY, (FileValue) entry.getValue());
}
}
return settingsBuilder.build();
}
@Nullable
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}
|
