From ef82068bd6c9dfba1c6b32c125151f4b939e282b Mon Sep 17 00:00:00 2001
From: Qingyang Chen <qingyangc@google.com>
Date: Tue, 11 Dec 2018 18:59:42 -0500
Subject: [PATCH] Adds SuccessEvent.

---
 .../cloud/tools/jib/event/JibEventType.java   |  4 ++++
 .../tools/jib/event/events/SuccessEvent.java  | 22 +++++++++++++++++++
 .../jib/plugins/common/BuildStepsRunner.java  |  2 ++
 3 files changed, 28 insertions(+)
 create mode 100644 jib-core/src/main/java/com/google/cloud/tools/jib/event/events/SuccessEvent.java

diff --git a/jib-core/src/main/java/com/google/cloud/tools/jib/event/JibEventType.java b/jib-core/src/main/java/com/google/cloud/tools/jib/event/JibEventType.java
index 6f9c47dae7..f9eea5b199 100644
--- a/jib-core/src/main/java/com/google/cloud/tools/jib/event/JibEventType.java
+++ b/jib-core/src/main/java/com/google/cloud/tools/jib/event/JibEventType.java
@@ -18,6 +18,7 @@
 
 import com.google.cloud.tools.jib.event.events.LogEvent;
 import com.google.cloud.tools.jib.event.events.ProgressEvent;
+import com.google.cloud.tools.jib.event.events.SuccessEvent;
 import com.google.cloud.tools.jib.event.events.TimerEvent;
 import com.google.common.annotations.VisibleForTesting;
 
@@ -40,6 +41,9 @@ public class JibEventType<E extends JibEvent> {
   public static final JibEventType<ProgressEvent> PROGRESS =
       new JibEventType<>(ProgressEvent.class);
 
+  /** Event indicating successful build completion. */
+  public static final JibEventType<SuccessEvent> SUCCESS = new JibEventType<>(SuccessEvent.class);
+
   // TODO: Add entries for all JibEvent types.
 
   private final Class<E> eventClass;
diff --git a/jib-core/src/main/java/com/google/cloud/tools/jib/event/events/SuccessEvent.java b/jib-core/src/main/java/com/google/cloud/tools/jib/event/events/SuccessEvent.java
new file mode 100644
index 0000000000..7895b7b802
--- /dev/null
+++ b/jib-core/src/main/java/com/google/cloud/tools/jib/event/events/SuccessEvent.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2018 Google LLC.
+ *
+ * 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.cloud.tools.jib.event.events;
+
+import com.google.cloud.tools.jib.event.JibEvent;
+
+/** Indicates build success. */
+public class SuccessEvent implements JibEvent {}
diff --git a/jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/BuildStepsRunner.java b/jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/BuildStepsRunner.java
index 64e1658404..d3149c555d 100644
--- a/jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/BuildStepsRunner.java
+++ b/jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/BuildStepsRunner.java
@@ -26,6 +26,7 @@
 import com.google.cloud.tools.jib.configuration.LayerConfiguration;
 import com.google.cloud.tools.jib.event.EventDispatcher;
 import com.google.cloud.tools.jib.event.events.LogEvent;
+import com.google.cloud.tools.jib.event.events.SuccessEvent;
 import com.google.cloud.tools.jib.image.ImageReference;
 import com.google.cloud.tools.jib.image.LayerEntry;
 import com.google.cloud.tools.jib.registry.InsecureRegistryException;
@@ -213,6 +214,7 @@ public JibContainer build(
 
       eventDispatcher.dispatch(LogEvent.lifecycle(""));
       eventDispatcher.dispatch(LogEvent.lifecycle(successMessage));
+      eventDispatcher.dispatch(new SuccessEvent());
 
       // when an image is built, write out the digest and id
       if (imageDigestOutputPath != null) {