BEP: add a JSON transport

As JSON is a widely supported format, also add a transport writing
the build events in JSON format. This will allow more tools to get
status reports about builds.

Change-Id: I7e5901cc65d927b93c8fc9bcd2d2baa7e707f09e
PiperOrigin-RevId: 155750964

1 files changed, 88 insertions, 0 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/buildeventstream/transports/JsonFormatFileTransportTest.java b/src/test/java/com/google/devtools/build/lib/buildeventstream/transports/JsonFormatFileTransportTest.java
new file mode 100644
index 0000000000..a1414de41d
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/buildeventstream/transports/JsonFormatFileTransportTest.java
@@ -0,0 +1,88 @@
+// 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.buildeventstream.transports;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.when;
+
+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.BuildEventStreamProtos;
+import com.google.devtools.build.lib.buildeventstream.BuildEventStreamProtos.BuildStarted;
+import com.google.devtools.build.lib.buildeventstream.PathConverter;
+import com.google.protobuf.util.JsonFormat;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.mockito.Matchers;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+
+/** Tests {@link TextFormatFileTransport}. * */
+@RunWith(JUnit4.class)
+public class JsonFormatFileTransportTest {
+
+  @Rule public TemporaryFolder tmp = new TemporaryFolder();
+
+  @Mock public BuildEvent buildEvent;
+
+  @Mock public PathConverter pathConverter;
+  @Mock public ArtifactGroupNamer artifactGroupNamer;
+
+  @Before
+  public void initMocks() {
+    MockitoAnnotations.initMocks(this);
+  }
+
+  @After
+  public void validateMocks() {
+    Mockito.validateMockitoUsage();
+  }
+
+  @Test
+  public void testCreatesFileAndWritesProtoJsonFormat() throws Exception {
+    File output = tmp.newFile();
+
+    BuildEventStreamProtos.BuildEvent started =
+        BuildEventStreamProtos.BuildEvent.newBuilder()
+            .setStarted(BuildStarted.newBuilder().setCommand("build"))
+            .build();
+    when(buildEvent.asStreamProto(Matchers.<BuildEventConverters>any())).thenReturn(started);
+    JsonFormatFileTransport transport =
+        new JsonFormatFileTransport(output.getAbsolutePath(), pathConverter);
+    transport.sendBuildEvent(buildEvent, artifactGroupNamer);
+
+    transport.close().get();
+    try (InputStream in = new FileInputStream(output)) {
+      Reader reader = new InputStreamReader(in);
+      JsonFormat.Parser parser = JsonFormat.parser();
+      BuildEventStreamProtos.BuildEvent.Builder builder =
+          BuildEventStreamProtos.BuildEvent.newBuilder();
+      parser.merge(reader, builder);
+      assertThat(builder.build()).isEqualTo(started);
+    }
+  }
+}