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
|
// Copyright 2014 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.skyframe;
import com.google.common.base.Function;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.ListMultimap;
import com.google.devtools.build.lib.actions.Action;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.DependencyResolver.Dependency;
import com.google.devtools.build.lib.analysis.LabelAndConfiguration;
import com.google.devtools.build.lib.analysis.TargetAndConfiguration;
import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
import com.google.devtools.build.lib.analysis.config.ConfigMatchingProvider;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.AspectParameters;
import com.google.devtools.build.lib.packages.Attribute;
import com.google.devtools.build.lib.packages.BuildType;
import com.google.devtools.build.lib.packages.RawAttributeMapper;
import com.google.devtools.build.lib.packages.Rule;
import com.google.devtools.build.lib.packages.RuleClassProvider;
import com.google.devtools.build.lib.skyframe.SkyframeActionExecutor.ConflictException;
import com.google.devtools.build.lib.syntax.EvalException;
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.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import javax.annotation.Nullable;
/**
* Build a post-processed ConfiguredTarget, vetting it for action conflict issues.
*/
public class PostConfiguredTargetFunction implements SkyFunction {
private static final Function<Dependency, SkyKey> TO_KEYS =
new Function<Dependency, SkyKey>() {
@Override
public SkyKey apply(Dependency input) {
return PostConfiguredTargetValue.key(
new ConfiguredTargetKey(input.getLabel(), input.getConfiguration()));
}
};
private final SkyframeExecutor.BuildViewProvider buildViewProvider;
private final RuleClassProvider ruleClassProvider;
public PostConfiguredTargetFunction(
SkyframeExecutor.BuildViewProvider buildViewProvider,
RuleClassProvider ruleClassProvider) {
this.buildViewProvider = Preconditions.checkNotNull(buildViewProvider);
this.ruleClassProvider = ruleClassProvider;
}
@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env)
throws SkyFunctionException, InterruptedException {
ImmutableMap<Action, ConflictException> badActions = PrecomputedValue.BAD_ACTIONS.get(env);
ConfiguredTargetValue ctValue = (ConfiguredTargetValue)
env.getValue(ConfiguredTargetValue.key((ConfiguredTargetKey) skyKey.argument()));
SkyframeDependencyResolver resolver =
buildViewProvider.getSkyframeBuildView().createDependencyResolver(env);
if (env.valuesMissing()) {
return null;
}
for (Action action : ctValue.getActions()) {
if (badActions.containsKey(action)) {
throw new ActionConflictFunctionException(badActions.get(action));
}
}
ConfiguredTarget ct = ctValue.getConfiguredTarget();
TargetAndConfiguration ctgValue =
new TargetAndConfiguration(ct.getTarget(), ct.getConfiguration());
Set<ConfigMatchingProvider> configConditions =
getConfigurableAttributeConditions(ctgValue, env);
if (configConditions == null) {
return null;
}
ListMultimap<Attribute, Dependency> deps;
try {
BuildConfiguration hostConfiguration =
buildViewProvider.getSkyframeBuildView().getHostConfiguration(ct.getConfiguration());
deps = resolver.dependentNodeMap(ctgValue, hostConfiguration, /*aspect=*/null,
AspectParameters.EMPTY, configConditions);
if (ct.getConfiguration() != null && ct.getConfiguration().useDynamicConfigurations()) {
deps = ConfiguredTargetFunction.trimConfigurations(env, ctgValue, deps, hostConfiguration,
ruleClassProvider);
}
} catch (EvalException e) {
throw new PostConfiguredTargetFunctionException(e);
} catch (ConfiguredTargetFunction.DependencyEvaluationException e) {
throw new PostConfiguredTargetFunctionException(e);
}
env.getValues(Iterables.transform(deps.values(), TO_KEYS));
if (env.valuesMissing()) {
return null;
}
return new PostConfiguredTargetValue(ct);
}
/**
* Returns the configurable attribute conditions necessary to evaluate the given configured
* target, or null if not all dependencies have yet been SkyFrame-evaluated.
*/
@Nullable
private Set<ConfigMatchingProvider> getConfigurableAttributeConditions(
TargetAndConfiguration ctg, Environment env) {
if (!(ctg.getTarget() instanceof Rule)) {
return ImmutableSet.of();
}
Rule rule = (Rule) ctg.getTarget();
RawAttributeMapper mapper = RawAttributeMapper.of(rule);
Set<SkyKey> depKeys = new LinkedHashSet<>();
for (Attribute attribute : rule.getAttributes()) {
for (Label label : mapper.getConfigurabilityKeys(attribute.getName(), attribute.getType())) {
if (!BuildType.Selector.isReservedLabel(label)) {
depKeys.add(ConfiguredTargetValue.key(label, ctg.getConfiguration()));
}
}
}
Map<SkyKey, SkyValue> cts = env.getValues(depKeys);
if (env.valuesMissing()) {
return null;
}
ImmutableSet.Builder<ConfigMatchingProvider> conditions = ImmutableSet.builder();
for (SkyValue ctValue : cts.values()) {
ConfiguredTarget ct = ((ConfiguredTargetValue) ctValue).getConfiguredTarget();
conditions.add(Preconditions.checkNotNull(ct.getProvider(ConfigMatchingProvider.class)));
}
return conditions.build();
}
@Nullable
@Override
public String extractTag(SkyKey skyKey) {
return Label.print(((LabelAndConfiguration) skyKey.argument()).getLabel());
}
private static class ActionConflictFunctionException extends SkyFunctionException {
public ActionConflictFunctionException(ConflictException e) {
super(e, Transience.PERSISTENT);
}
}
private static class PostConfiguredTargetFunctionException extends SkyFunctionException {
public PostConfiguredTargetFunctionException(Exception e) {
super(e, Transience.PERSISTENT);
}
}
}
|
