| // Copyright 2019 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.actiongraph.v2; |
| |
| import static com.google.devtools.build.lib.skyframe.actiongraph.v2.AqueryOutputHandler.OutputType.BINARY; |
| import static com.google.devtools.build.lib.skyframe.actiongraph.v2.AqueryOutputHandler.OutputType.TEXT; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.Action; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.ActionGraphContainer; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.Artifact; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.AspectDescriptor; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.Configuration; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.DepSetOfFiles; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.PathFragment; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.RuleClass; |
| import com.google.devtools.build.lib.analysis.AnalysisProtosV2.Target; |
| import com.google.protobuf.CodedOutputStream; |
| import com.google.protobuf.Message; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| |
| /** Manages the various streamed output channels of aquery. This does not support JSON format. */ |
| public class StreamedOutputHandler implements AqueryOutputHandler { |
| private final OutputType outputType; |
| private final CodedOutputStream outputStream; |
| private final PrintStream printStream; |
| |
| public StreamedOutputHandler( |
| OutputType outputType, CodedOutputStream outputStream, PrintStream printStream) { |
| this.outputType = outputType; |
| Preconditions.checkArgument( |
| outputType == BINARY || outputType == TEXT, |
| "Only proto and textproto outputs should be streamed."); |
| this.outputStream = outputStream; |
| this.printStream = printStream; |
| } |
| |
| @Override |
| public void outputArtifact(Artifact message) throws IOException { |
| printMessage(message, ActionGraphContainer.ARTIFACTS_FIELD_NUMBER, "artifacts"); |
| } |
| |
| @Override |
| public void outputAction(Action message) throws IOException { |
| printMessage(message, ActionGraphContainer.ACTIONS_FIELD_NUMBER, "actions"); |
| } |
| |
| @Override |
| public void outputTarget(Target message) throws IOException { |
| printMessage(message, ActionGraphContainer.TARGETS_FIELD_NUMBER, "targets"); |
| } |
| |
| @Override |
| public void outputDepSetOfFiles(DepSetOfFiles message) throws IOException { |
| printMessage(message, ActionGraphContainer.DEP_SET_OF_FILES_FIELD_NUMBER, "dep_set_of_files"); |
| } |
| |
| @Override |
| public void outputConfiguration(Configuration message) throws IOException { |
| printMessage(message, ActionGraphContainer.CONFIGURATION_FIELD_NUMBER, "configuration"); |
| } |
| |
| @Override |
| public void outputAspectDescriptor(AspectDescriptor message) throws IOException { |
| printMessage( |
| message, ActionGraphContainer.ASPECT_DESCRIPTORS_FIELD_NUMBER, "aspect_descriptors"); |
| } |
| |
| @Override |
| public void outputRuleClass(RuleClass message) throws IOException { |
| printMessage(message, ActionGraphContainer.RULE_CLASSES_FIELD_NUMBER, "rule_classes"); |
| } |
| |
| @Override |
| public void outputPathFragment(PathFragment message) throws IOException { |
| printMessage(message, ActionGraphContainer.PATH_FRAGMENTS_FIELD_NUMBER, "path_fragments"); |
| } |
| |
| /** |
| * Prints the Message to the appropriate output channel. |
| * |
| * @param message The message to be printed. |
| */ |
| private void printMessage(Message message, int fieldNumber, String messageLabel) |
| throws IOException { |
| switch (outputType) { |
| case BINARY: |
| outputStream.writeMessage(fieldNumber, message); |
| break; |
| case TEXT: |
| printStream.print(messageLabel + " {\n" + message + "}\n"); |
| break; |
| default: |
| throw new IllegalStateException("Unknown outputType " + outputType.formatName()); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| outputStream.flush(); |
| printStream.flush(); |
| } |
| } |