| // 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.lib.buildeventstream.transports; |
| |
| import com.google.devtools.build.lib.buildeventstream.ArtifactGroupNamer; |
| import com.google.devtools.build.lib.buildeventstream.BuildEvent; |
| import com.google.devtools.build.lib.buildeventstream.BuildEventConverters; |
| import com.google.devtools.build.lib.buildeventstream.BuildEventTransport; |
| import com.google.devtools.build.lib.buildeventstream.PathConverter; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| import com.google.protobuf.util.JsonFormat; |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| |
| /** |
| * A simple {@link BuildEventTransport} that writes the JSON representation of the protocol-buffer |
| * representation of the events to a file. |
| */ |
| public final class JsonFormatFileTransport extends FileTransport { |
| |
| private final PathConverter pathConverter; |
| |
| JsonFormatFileTransport(String path, PathConverter pathConverter) throws IOException { |
| super(path); |
| this.pathConverter = pathConverter; |
| } |
| |
| @Override |
| public String name() { |
| return this.getClass().getSimpleName(); |
| } |
| |
| @Override |
| public synchronized void sendBuildEvent(BuildEvent event, final ArtifactGroupNamer namer) { |
| BuildEventConverters converters = |
| new BuildEventConverters() { |
| @Override |
| public PathConverter pathConverter() { |
| return pathConverter; |
| } |
| |
| @Override |
| public ArtifactGroupNamer artifactGroupNamer() { |
| return namer; |
| } |
| }; |
| String protoJsonRepresentation; |
| try { |
| protoJsonRepresentation = |
| JsonFormat.printer() |
| .omittingInsignificantWhitespace() |
| .print(event.asStreamProto(converters)) |
| + "\n"; |
| } catch (InvalidProtocolBufferException e) { |
| // We don't expect any unknown Any fields in our protocol buffer. Nevertheless, handle |
| // the exception gracefully and, at least, return valid JSON with an id field. |
| protoJsonRepresentation = |
| "{\"id\" : \"unknown\", \"exception\" : \"InvalidProtocolBufferException\"}\n"; |
| } |
| writeData(protoJsonRepresentation.getBytes(StandardCharsets.UTF_8)); |
| } |
| } |