Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/4697#discussion_r141370485
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/messages/JobCancellationHeaders.java
---
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.flink.runtime.rest.messages;
+
+import org.apache.flink.runtime.rest.HttpMethodWrapper;
+import org.apache.flink.runtime.rest.handler.legacy.JobCancellationHandler;
+
+import
org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpResponseStatus;
+
+/**
+ * Message headers for the {@link JobCancellationHandler}.
+ */
+public class JobCancellationHeaders implements
MessageHeaders<EmptyRequestBody, EmptyResponseBody, JobMessageParameters> {
+
+ private static final JobCancellationHeaders INSTANCE = new
JobCancellationHeaders();
+
+ private JobCancellationHeaders() {}
+
+ @Override
+ public Class<EmptyRequestBody> getRequestClass() {
+ return EmptyRequestBody.class;
+ }
+
+ @Override
+ public Class<EmptyResponseBody> getResponseClass() {
+ return EmptyResponseBody.class;
+ }
+
+ @Override
+ public HttpResponseStatus getResponseStatusCode() {
+ return HttpResponseStatus.ACCEPTED;
+ }
+
+ @Override
+ public JobMessageParameters getUnresolvedMessageParameters() {
+ return new JobMessageParameters();
+ }
+
+ @Override
+ public HttpMethodWrapper getHttpMethod() {
+ return HttpMethodWrapper.DELETE;
--- End diff --
For example: `rescale`, `restart`, `pause`. Others to come in the future.
Agreed that if this list contains two more methods, it wouldn't change much.
---
