1 files changed, 68 insertions, 0 deletions
diff --git a/hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/states/endpoint/VersionEndpointTask.java b/hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/states/endpoint/VersionEndpointTask.java
new file mode 100644
index 0000000000..b048ee5b5c
--- /dev/null
+++ b/hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/states/endpoint/VersionEndpointTask.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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.container.common.states.endpoint;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hdds.protocol.proto
+    .StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto;
+import org.apache.hadoop.ozone.container.common.statemachine
+    .EndpointStateMachine;
+import org.apache.hadoop.ozone.protocol.VersionResponse;
+
+import java.io.IOException;
+import java.util.concurrent.Callable;
+
+/**
+ * Task that returns version.
+ */
+public class VersionEndpointTask implements
+    Callable<EndpointStateMachine.EndPointStates> {
+  private final EndpointStateMachine rpcEndPoint;
+  private final Configuration configuration;
+
+  public VersionEndpointTask(EndpointStateMachine rpcEndPoint,
+      Configuration conf) {
+    this.rpcEndPoint = rpcEndPoint;
+    this.configuration = conf;
+  }
+
+  /**
+   * Computes a result, or throws an exception if unable to do so.
+   *
+   * @return computed result
+   * @throws Exception if unable to compute a result
+   */
+  @Override
+  public EndpointStateMachine.EndPointStates call() throws Exception {
+    rpcEndPoint.lock();
+    try{
+      SCMVersionResponseProto versionResponse =
+          rpcEndPoint.getEndPoint().getVersion(null);
+      rpcEndPoint.setVersion(VersionResponse.getFromProtobuf(versionResponse));
+
+      EndpointStateMachine.EndPointStates nextState =
+          rpcEndPoint.getState().getNextState();
+      rpcEndPoint.setState(nextState);
+      rpcEndPoint.zeroMissedCount();
+    } catch (IOException ex) {
+      rpcEndPoint.logIfNeeded(ex);
+    } finally {
+      rpcEndPoint.unlock();
+    }
+    return rpcEndPoint.getState();
+  }
+}