src/main/java/com/google/devtools/build/lib/analysis/NoBuildEvent.java

// 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.analysis;

import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.buildeventstream.BuildEvent;
import com.google.devtools.build.lib.buildeventstream.BuildEventConverters;
import com.google.devtools.build.lib.buildeventstream.BuildEventId;
import com.google.devtools.build.lib.buildeventstream.BuildEventStreamProtos;
import com.google.devtools.build.lib.buildeventstream.GenericBuildEvent;
import com.google.devtools.build.lib.buildeventstream.ProgressEvent;
import java.util.Collection;

/** This event raised to indicate that no build will be happening for the given command. */
public final class NoBuildEvent implements BuildEvent {
  private final String command;
  private final Long startTimeMillis;

  public NoBuildEvent(String command, Long startTimeMillis) {
    this.command = command;
    this.startTimeMillis = startTimeMillis;
  }

  public NoBuildEvent() {
    this(null, null);
  }

  @Override
  public Collection<BuildEventId> getChildrenEvents() {
    return ImmutableList.of(ProgressEvent.INITIAL_PROGRESS_UPDATE);
  }

  @Override
  public BuildEventId getEventId() {
    return BuildEventId.buildStartedId();
  }

  @Override
  public BuildEventStreamProtos.BuildEvent asStreamProto(BuildEventConverters converters) {
    BuildEventStreamProtos.BuildStarted.Builder started =
        BuildEventStreamProtos.BuildStarted.newBuilder()
            .setBuildToolVersion(BlazeVersionInfo.instance().getVersion());
    if (command != null) {
      started.setCommand(command);
    }
    if (startTimeMillis != null) {
      started.setStartTimeMillis(startTimeMillis);
    }
    return GenericBuildEvent.protoChaining(this).setStarted(started.build()).build();
  }
}