Create an "WorkspaceConfig" event to report the local Blaze exec_root to BEP, primarily for local consumers.
Going forward, we may add more workspace/output information to the message. For now it just contains the exec_root.
RELNOTES: None
PiperOrigin-RevId: 251459139
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/ExecRootEvent.java b/src/main/java/com/google/devtools/build/lib/runtime/ExecRootEvent.java
new file mode 100644
index 0000000..d6588bb
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/runtime/ExecRootEvent.java
@@ -0,0 +1,55 @@
+// 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.runtime;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.buildeventstream.BuildEvent;
+import com.google.devtools.build.lib.buildeventstream.BuildEventContext;
+import com.google.devtools.build.lib.buildeventstream.BuildEventId;
+import com.google.devtools.build.lib.buildeventstream.BuildEventStreamProtos;
+import com.google.devtools.build.lib.vfs.Path;
+import java.util.Collection;
+
+/** An event that receives the execRoot of this blaze invocation. */
+public class ExecRootEvent implements BuildEvent {
+
+ private final Path execRoot;
+
+ public ExecRootEvent(Path execRoot) {
+ this.execRoot = execRoot;
+ }
+
+ @Override
+ public BuildEventStreamProtos.BuildEvent asStreamProto(BuildEventContext context) {
+ BuildEventStreamProtos.WorkspaceConfig workspaceConfigEvent =
+ BuildEventStreamProtos.WorkspaceConfig.newBuilder()
+ .setLocalExecRoot(execRoot.getPathString())
+ .build();
+ return BuildEventStreamProtos.BuildEvent.newBuilder()
+ .setId(getEventId().asStreamProto())
+ .setWorkspaceInfo(workspaceConfigEvent)
+ .build();
+ }
+
+ @Override
+ public BuildEventId getEventId() {
+ return BuildEventId.workspaceConfigId();
+ }
+
+ @Override
+ public Collection<BuildEventId> getChildrenEvents() {
+ return ImmutableList.of();
+ }
+}
