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
|
// Copyright 2014 Google Inc. 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.skyframe;
import com.google.common.base.Supplier;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
import com.google.devtools.build.lib.analysis.config.BuildConfigurationCollection;
import com.google.devtools.build.lib.analysis.config.BuildOptions;
import com.google.devtools.build.lib.analysis.config.ConfigurationFactory;
import com.google.devtools.build.lib.analysis.config.HostTransition;
import com.google.devtools.build.lib.analysis.config.InvalidConfigurationException;
import com.google.devtools.build.lib.analysis.config.PackageProviderForConfigurations;
import com.google.devtools.build.lib.events.EventHandler;
import com.google.devtools.build.lib.events.StoredEventHandler;
import com.google.devtools.build.lib.packages.Attribute;
import com.google.devtools.build.lib.skyframe.ConfigurationCollectionValue.ConfigurationCollectionKey;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nullable;
/**
* A builder for {@link ConfigurationCollectionValue} instances.
*/
public class ConfigurationCollectionFunction implements SkyFunction {
private final Supplier<ConfigurationFactory> configurationFactory;
public ConfigurationCollectionFunction(Supplier<ConfigurationFactory> configurationFactory) {
this.configurationFactory = configurationFactory;
}
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws InterruptedException,
ConfigurationCollectionFunctionException {
ConfigurationCollectionKey collectionKey = (ConfigurationCollectionKey) skyKey.argument();
try {
BuildConfigurationCollection result =
getConfigurations(env, new SkyframePackageLoaderWithValueEnvironment(env),
collectionKey.getBuildOptions(), collectionKey.getMultiCpu());
// BuildConfigurationCollection can be created, but dependencies to some files might be
// missing. In that case we need to build configurationCollection again.
if (env.valuesMissing()) {
return null;
}
for (BuildConfiguration config : result.getTargetConfigurations()) {
config.declareSkyframeDependencies(env);
}
if (env.valuesMissing()) {
return null;
}
return new ConfigurationCollectionValue(result);
} catch (InvalidConfigurationException e) {
throw new ConfigurationCollectionFunctionException(e);
}
}
/** Create the build configurations with the given options. */
private BuildConfigurationCollection getConfigurations(Environment env,
PackageProviderForConfigurations loadedPackageProvider, BuildOptions buildOptions,
ImmutableSet<String> multiCpu)
throws InvalidConfigurationException {
// We cache all the related configurations for this target configuration in a cache that is
// dropped at the end of this method call. We instead rely on the cache for entire collections
// for caching the target and related configurations, and on a dedicated host configuration
// cache for the host configuration.
Cache<String, BuildConfiguration> cache =
CacheBuilder.newBuilder().<String, BuildConfiguration>build();
List<BuildConfiguration> targetConfigurations = new ArrayList<>();
if (!multiCpu.isEmpty()) {
for (String cpu : multiCpu) {
BuildConfiguration targetConfiguration = createConfiguration(
cache, env.getListener(), loadedPackageProvider, buildOptions, cpu);
if (targetConfiguration == null || targetConfigurations.contains(targetConfiguration)) {
continue;
}
targetConfigurations.add(targetConfiguration);
}
if (loadedPackageProvider.valuesMissing()) {
return null;
}
} else {
BuildConfiguration targetConfiguration = createConfiguration(
cache, env.getListener(), loadedPackageProvider, buildOptions, null);
if (targetConfiguration == null) {
return null;
}
targetConfigurations.add(targetConfiguration);
}
BuildConfiguration hostConfiguration = getHostConfiguration(env, targetConfigurations.get(0));
if (hostConfiguration == null) {
return null;
}
return new BuildConfigurationCollection(targetConfigurations, hostConfiguration);
}
/**
* Returns the host configuration, or null on missing Skyframe deps.
*/
private BuildConfiguration getHostConfiguration(Environment env,
BuildConfiguration targetConfiguration) throws InvalidConfigurationException {
if (targetConfiguration.useDynamicConfigurations()) {
BuildOptions hostOptions = HostTransition.INSTANCE.apply(targetConfiguration.getOptions());
SkyKey hostConfigKey =
BuildConfigurationValue.key(targetConfiguration.fragmentClasses(), hostOptions);
BuildConfigurationValue skyValHost = (BuildConfigurationValue)
env.getValueOrThrow(hostConfigKey, InvalidConfigurationException.class);
// Also preload the target configuration so the configured target functions for
// top-level targets don't have to waste cycles from a missing Skyframe dep.
BuildOptions targetOptions = targetConfiguration.getOptions();
SkyKey targetConfigKey =
BuildConfigurationValue.key(targetConfiguration.fragmentClasses(), targetOptions);
BuildConfigurationValue skyValTarget = (BuildConfigurationValue)
env.getValueOrThrow(targetConfigKey, InvalidConfigurationException.class);
if (skyValHost == null || skyValTarget == null) {
return null;
}
return skyValHost.getConfiguration();
} else {
return targetConfiguration.getConfiguration(Attribute.ConfigurationTransition.HOST);
}
}
@Nullable
private BuildConfiguration createConfiguration(
Cache<String, BuildConfiguration> cache,
EventHandler originalEventListener,
PackageProviderForConfigurations loadedPackageProvider,
BuildOptions buildOptions, String cpuOverride) throws InvalidConfigurationException {
StoredEventHandler errorEventListener = new StoredEventHandler();
if (cpuOverride != null) {
// TODO(bazel-team): Options classes should be immutable. This is a bit of a hack.
buildOptions = buildOptions.clone();
buildOptions.get(BuildConfiguration.Options.class).cpu = cpuOverride;
}
BuildConfiguration targetConfig = configurationFactory.get().createConfigurations(
cache, loadedPackageProvider, buildOptions, errorEventListener);
if (targetConfig == null) {
return null;
}
errorEventListener.replayOn(originalEventListener);
if (errorEventListener.hasErrors()) {
throw new InvalidConfigurationException("Build options are invalid");
}
return targetConfig;
}
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
/**
* Used to declare all the exception types that can be wrapped in the exception thrown by
* {@link ConfigurationCollectionFunction#compute}.
*/
private static final class ConfigurationCollectionFunctionException extends
SkyFunctionException {
public ConfigurationCollectionFunctionException(InvalidConfigurationException e) {
super(e, Transience.PERSISTENT);
}
}
}
|
