| /* |
| * 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.idea.blaze.base.command.buildresult; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.idea.blaze.base.async.process.LineProcessingOutputStream; |
| import com.google.idea.blaze.base.async.process.LineProcessingOutputStream.LineProcessor; |
| import com.google.idea.blaze.base.model.primitives.Label; |
| import com.intellij.openapi.diagnostic.Logger; |
| import java.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.function.Predicate; |
| |
| /** |
| * Build event protocol implementation to get build results. |
| * |
| * <p>The build even protocol (BEP for short) is a proto-based protocol used by bazel to communicate |
| * build events. |
| */ |
| class BuildResultHelperBep implements BuildResultHelper { |
| |
| private static final Logger logger = Logger.getInstance(BuildResultHelperBep.class); |
| private final File outputFile; |
| private final Predicate<String> fileFilter; |
| private ImmutableList<File> result; |
| |
| BuildResultHelperBep(Predicate<String> fileFilter) { |
| this.fileFilter = fileFilter; |
| outputFile = BuildEventProtocolUtils.createTempOutputFile(); |
| } |
| |
| @Override |
| public List<String> getBuildFlags() { |
| return BuildEventProtocolUtils.getBuildFlags(outputFile); |
| } |
| |
| @Override |
| public OutputStream stderr(LineProcessor... lineProcessors) { |
| return LineProcessingOutputStream.of(ImmutableList.copyOf(lineProcessors)); |
| } |
| |
| @Override |
| public ImmutableList<File> getBuildArtifacts() { |
| if (result == null) { |
| result = |
| readResult( |
| input -> |
| BuildEventProtocolOutputReader.parseAllOutputFilenames(input, fileFilter)) |
| .orElse(ImmutableList.of()); |
| } |
| return result; |
| } |
| |
| @Override |
| public ImmutableList<File> getBuildArtifactsForTarget(Label target) { |
| if (result == null) { |
| result = |
| readResult( |
| input -> |
| BuildEventProtocolOutputReader.parseArtifactsForTarget( |
| input, target, fileFilter)) |
| .orElse(ImmutableList.of()); |
| } |
| return result; |
| } |
| |
| private <V> Optional<V> readResult(BepReader<V> readAction) { |
| try (InputStream inputStream = new BufferedInputStream(new FileInputStream(outputFile))) { |
| return Optional.of(readAction.read(inputStream)); |
| } catch (IOException e) { |
| logger.error(e); |
| return Optional.empty(); |
| } finally { |
| close(); |
| } |
| } |
| |
| @Override |
| public void close() { |
| if (!outputFile.delete()) { |
| logger.warn("Could not delete BEP output file: " + outputFile); |
| } |
| } |
| |
| private interface BepReader<V> { |
| V read(InputStream inputStream) throws IOException; |
| } |
| } |