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// Copyright 2017 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.android;
import com.android.builder.dependency.SymbolFileProvider;
import com.android.resources.ResourceType;
import com.google.common.base.Optional;
import com.google.common.base.Stopwatch;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import com.google.devtools.build.android.AndroidResourceProcessor.AaptConfigOptions;
import com.google.devtools.build.android.Converters.DependencyAndroidDataListConverter;
import com.google.devtools.build.android.Converters.PathConverter;
import com.google.devtools.build.android.resources.RClassGenerator;
import com.google.devtools.build.android.resources.ResourceSymbols;
import com.google.devtools.common.options.Option;
import com.google.devtools.common.options.OptionDocumentationCategory;
import com.google.devtools.common.options.OptionEffectTag;
import com.google.devtools.common.options.OptionsBase;
import com.google.devtools.common.options.OptionsParser;
import com.google.devtools.common.options.ShellQuotedParamsFilePreProcessor;
import java.io.Closeable;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
/** This action generates consistent ids R.class files for use in robolectric tests. */
public class GenerateRobolectricResourceSymbolsAction {
private static final Logger logger =
Logger.getLogger(GenerateRobolectricResourceSymbolsAction.class.getName());
private static final class WriteLibraryRClass implements Callable<Boolean> {
private final Map.Entry<String, Collection<ListenableFuture<ResourceSymbols>>>
librarySymbolEntry;
private final RClassGenerator generator;
private WriteLibraryRClass(
Map.Entry<String, Collection<ListenableFuture<ResourceSymbols>>> librarySymbolEntry,
RClassGenerator generator) {
this.librarySymbolEntry = librarySymbolEntry;
this.generator = generator;
}
@Override
public Boolean call() throws Exception {
List<ResourceSymbols> resourceSymbolsList = new ArrayList<>();
for (final ListenableFuture<ResourceSymbols> resourceSymbolsReader :
librarySymbolEntry.getValue()) {
resourceSymbolsList.add(resourceSymbolsReader.get());
}
generator.write(
librarySymbolEntry.getKey(), ResourceSymbols.merge(resourceSymbolsList).asInitializers());
return true;
}
}
/** Flag specifications for this action. */
public static final class Options extends OptionsBase {
@Option(
name = "data",
defaultValue = "",
converter = DependencyAndroidDataListConverter.class,
category = "input",
documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
effectTags = {OptionEffectTag.UNKNOWN},
help =
"Data dependencies. The expected format is "
+ DependencyAndroidData.EXPECTED_FORMAT
+ "[&...]"
)
public List<DependencyAndroidData> data;
@Option(
name = "classJarOutput",
defaultValue = "null",
converter = PathConverter.class,
category = "output",
documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
effectTags = {OptionEffectTag.UNKNOWN},
help = "Path for the generated java class jar."
)
public Path classJarOutput;
@Option(
name = "targetLabel",
defaultValue = "null",
category = "input",
documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
effectTags = {OptionEffectTag.UNKNOWN},
help = "A label to add to the output jar's manifest as 'Target-Label'"
)
public String targetLabel;
@Option(
name = "injectingRuleKind",
defaultValue = "null",
category = "input",
documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
effectTags = {OptionEffectTag.UNKNOWN},
help = "A string to add to the output jar's manifest as 'Injecting-Rule-Kind'"
)
public String injectingRuleKind;
}
public static void main(String[] args) throws Exception {
final Stopwatch timer = Stopwatch.createStarted();
OptionsParser optionsParser =
OptionsParser.newOptionsParser(Options.class, AaptConfigOptions.class);
optionsParser.enableParamsFileSupport(
new ShellQuotedParamsFilePreProcessor(FileSystems.getDefault()));
optionsParser.parseAndExitUponError(args);
AaptConfigOptions aaptConfigOptions = optionsParser.getOptions(AaptConfigOptions.class);
Options options = optionsParser.getOptions(Options.class);
try (ScopedTemporaryDirectory scopedTmp =
new ScopedTemporaryDirectory("robolectric_resources_tmp")) {
Path tmp = scopedTmp.getPath();
Path generatedSources = Files.createDirectories(tmp.resolve("generated_resources"));
// The reported availableProcessors may be higher than the actual resources
// (on a shared system). On the other hand, a lot of the work is I/O, so it's not completely
// CPU bound. As a compromise, divide by 2 the reported availableProcessors.
int numThreads = Math.max(1, Runtime.getRuntime().availableProcessors() / 2);
ListeningExecutorService executorService =
MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(numThreads));
try (Closeable closeable = ExecutorServiceCloser.createWith(executorService)) {
logger.fine(String.format("Setup finished at %sms", timer.elapsed(TimeUnit.MILLISECONDS)));
final PlaceholderIdFieldInitializerBuilder robolectricIds =
PlaceholderIdFieldInitializerBuilder.from(aaptConfigOptions.androidJar);
ParsedAndroidData.loadedFrom(
options.data, executorService, AndroidParsedDataDeserializer.create())
.writeResourcesTo(
new AndroidResourceSymbolSink() {
@Override
public void acceptSimpleResource(ResourceType type, String name) {
robolectricIds.addSimpleResource(type, name);
}
@Override
public void acceptPublicResource(
ResourceType type, String name, Optional<Integer> value) {
robolectricIds.addPublicResource(type, name, value);
}
@Override
public void acceptStyleableResource(
FullyQualifiedName key, Map<FullyQualifiedName, Boolean> attrs) {
robolectricIds.addStyleableResource(key, attrs);
}
});
final RClassGenerator generator =
RClassGenerator.with(generatedSources, robolectricIds.build(), false);
List<SymbolFileProvider> libraries = new ArrayList<>();
for (DependencyAndroidData dataDep : options.data) {
SymbolFileProvider library = dataDep.asSymbolFileProvider();
libraries.add(library);
}
List<ListenableFuture<Boolean>> writeSymbolsTask = new ArrayList<>();
for (final Map.Entry<String, Collection<ListenableFuture<ResourceSymbols>>>
librarySymbolEntry :
ResourceSymbols.loadFrom(libraries, executorService, null).asMap().entrySet()) {
writeSymbolsTask.add(
executorService.submit(new WriteLibraryRClass(librarySymbolEntry, generator)));
}
FailedFutureAggregator.forIOExceptionsWithMessage("Errors writing symbols.")
.aggregateAndMaybeThrow(writeSymbolsTask);
}
logger.fine(String.format("Merging finished at %sms", timer.elapsed(TimeUnit.MILLISECONDS)));
AndroidResourceOutputs.createClassJar(
generatedSources, options.classJarOutput, options.targetLabel, options.injectingRuleKind);
logger.fine(
String.format("Create classJar finished at %sms", timer.elapsed(TimeUnit.MILLISECONDS)));
} catch (Exception e) {
logger.log(Level.SEVERE, "Unexpected", e);
throw e;
}
logger.fine(String.format("Resources merged in %sms", timer.elapsed(TimeUnit.MILLISECONDS)));
}
}
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