[flink] 07/11: [FLINK-15347][tests] Add ActorSystemResource

[tr...@apache.org]

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trohrmann pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/flink.git

commit 4c63f212e2d98bb8f6a5b813ed594e78a6b5b420
Author: Till Rohrmann <tr...@apache.org>
AuthorDate: Wed Apr 8 17:00:21 2020 +0200

    [FLINK-15347][tests] Add ActorSystemResource
---
 .../runtime/rpc/akka/ActorSystemResource.java      | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/flink-runtime/src/test/java/org/apache/flink/runtime/rpc/akka/ActorSystemResource.java b/flink-runtime/src/test/java/org/apache/flink/runtime/rpc/akka/ActorSystemResource.java
new file mode 100644
index 0000000..0f734bf
--- /dev/null
+++ b/flink-runtime/src/test/java/org/apache/flink/runtime/rpc/akka/ActorSystemResource.java
@@ -0,0 +1,64 @@
+/*
+ * 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.rpc.akka;
+
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.util.Preconditions;
+
+import akka.actor.ActorSystem;
+import org.junit.rules.ExternalResource;
+
+/**
+ * External resource which starts an {@link akka.actor.ActorSystem}.
+ */
+public class ActorSystemResource extends ExternalResource {
+
+	private final Configuration configuration;
+
+	private ActorSystem actorSystem;
+
+	private ActorSystemResource(Configuration configuration) {
+		this.configuration = configuration;
+	}
+
+	@Override
+	protected void before() throws Throwable {
+		Preconditions.checkState(actorSystem == null, "ActorSystem must not be initialized when calling before.");
+		actorSystem = AkkaUtils.createLocalActorSystem(configuration);
+	}
+
+	@Override
+	protected void after() {
+		Preconditions.checkState(actorSystem != null, "ActorSystem must be initialized when calling after.");
+		AkkaUtils.terminateActorSystem(actorSystem).join();
+	}
+
+	public ActorSystem getActorSystem() {
+		return actorSystem;
+	}
+
+	public static ActorSystemResource defaultConfiguration() {
+		return new ActorSystemResource(new Configuration());
+	}
+
+	public static ActorSystemResource withConfiguration(Configuration configuration) {
+		return new ActorSystemResource(configuration);
+	}
+}