// Copyright 2016 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.rules.java.proto;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode.TARGET;
import static com.google.devtools.build.lib.collect.nestedset.Order.STABLE_ORDER;
import static com.google.devtools.build.lib.rules.java.proto.JavaLiteProtoAspect.PROTO_TOOLCHAIN_ATTR;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.OutputGroupProvider;
import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.analysis.RuleConfiguredTargetBuilder;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.Runfiles;
import com.google.devtools.build.lib.analysis.RunfilesProvider;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
import com.google.devtools.build.lib.rules.java.JavaCompilationArgsProvider;
import com.google.devtools.build.lib.rules.java.JavaRuleOutputJarsProvider;
import com.google.devtools.build.lib.rules.java.JavaRunfilesProvider;
import com.google.devtools.build.lib.rules.java.JavaSkylarkApiProvider;
import com.google.devtools.build.lib.rules.java.JavaSourceJarsProvider;
import com.google.devtools.build.lib.rules.java.ProguardLibrary;
import com.google.devtools.build.lib.rules.java.ProguardSpecProvider;
import com.google.devtools.build.lib.rules.proto.ProtoLangToolchainProvider;
/** Implementation of the java_lite_proto_library rule. */
public class JavaLiteProtoLibrary implements RuleConfiguredTargetFactory {
@Override
public ConfiguredTarget create(final RuleContext ruleContext)
throws InterruptedException, RuleErrorException {
JavaCompilationArgsProvider dependencyArgsProviders =
JavaCompilationArgsProvider.merge(
Iterables.<JavaCompilationArgsAspectProvider, JavaCompilationArgsProvider>transform(
getDeps(ruleContext, JavaCompilationArgsAspectProvider.class),
JavaCompilationArgsAspectProvider.GET_PROVIDER));
if (!StrictDepsUtils.isStrictDepsJavaProtoLibrary(ruleContext)) {
dependencyArgsProviders = StrictDepsUtils.makeNonStrict(dependencyArgsProviders);
}
Runfiles runfiles = new Runfiles.Builder(ruleContext.getWorkspaceName()).addArtifacts(
dependencyArgsProviders.getRecursiveJavaCompilationArgs().getRuntimeJars()).build();
JavaSourceJarsProvider sourceJarsProvider =
JavaSourceJarsProvider.merge(
Iterables.<JavaSourceJarsAspectProvider, JavaSourceJarsProvider>transform(
getDeps(ruleContext, JavaSourceJarsAspectProvider.class),
JavaSourceJarsAspectProvider.GET_PROVIDER));
NestedSetBuilder<Artifact> filesToBuild = NestedSetBuilder.stableOrder();
filesToBuild.addAll(sourceJarsProvider.getSourceJars());
for (JavaProtoLibraryTransitiveFilesToBuildProvider provider : ruleContext.getPrerequisites(
"deps", Mode.TARGET, JavaProtoLibraryTransitiveFilesToBuildProvider.class)) {
filesToBuild.addTransitive(provider.getJars());
}
JavaRuleOutputJarsProvider javaRuleOutputJarsProvider =
JavaRuleOutputJarsProvider.builder().build();
JavaSkylarkApiProvider.Builder skylarkApiProvider =
JavaSkylarkApiProvider.builder()
.setRuleOutputJarsProvider(javaRuleOutputJarsProvider)
.setSourceJarsProvider(sourceJarsProvider)
.setCompilationArgsProvider(dependencyArgsProviders);
return new RuleConfiguredTargetBuilder(ruleContext)
.setFilesToBuild(filesToBuild.build())
.addSkylarkTransitiveInfo(JavaSkylarkApiProvider.NAME, skylarkApiProvider.build())
.addProvider(RunfilesProvider.class, RunfilesProvider.withData(Runfiles.EMPTY, runfiles))
.addOutputGroup(
OutputGroupProvider.DEFAULT, NestedSetBuilder.<Artifact>emptySet(STABLE_ORDER))
.add(JavaCompilationArgsProvider.class, dependencyArgsProviders)
.add(JavaSourceJarsProvider.class, sourceJarsProvider)
.add(JavaRunfilesProvider.class, new JavaRunfilesProvider(runfiles))
.add(ProguardSpecProvider.class, getJavaLiteRuntimeSpec(ruleContext))
.add(JavaRuleOutputJarsProvider.class, javaRuleOutputJarsProvider)
.build();
}
private <C extends TransitiveInfoProvider> Iterable<C> getDeps(
RuleContext ruleContext, Class<C> clazz) {
return ruleContext.getPrerequisites("deps", TARGET, clazz);
}
private ProguardSpecProvider getJavaLiteRuntimeSpec(RuleContext ruleContext) {
NestedSet<Artifact> specs =
new ProguardLibrary(ruleContext).collectProguardSpecs(ImmutableMultimap.<Mode, String>of());
TransitiveInfoCollection runtime = getProtoToolchainProvider(ruleContext).runtime();
if (runtime == null) {
return new ProguardSpecProvider(specs);
}
ProguardSpecProvider specProvider = runtime.getProvider(ProguardSpecProvider.class);
if (specProvider == null) {
return new ProguardSpecProvider(specs);
}
return new ProguardSpecProvider(
NestedSetBuilder.fromNestedSet(specs)
.addTransitive(specProvider.getTransitiveProguardSpecs())
.build());
}
private ProtoLangToolchainProvider getProtoToolchainProvider(RuleContext ruleContext) {
return checkNotNull(
ruleContext.getPrerequisite(
PROTO_TOOLCHAIN_ATTR, TARGET, ProtoLangToolchainProvider.class));
}
}