ratis-examples/src/main/java/org/apache/ratis/examples/arithmetic/cli/Client.java

/**
 * 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.ratis.examples.arithmetic.cli;

import org.apache.ratis.client.RaftClient;
import org.apache.ratis.conf.Parameters;
import org.apache.ratis.conf.RaftProperties;
import org.apache.ratis.examples.common.SubCommandBase;
import org.apache.ratis.grpc.GrpcFactory;
import org.apache.ratis.protocol.ClientId;
import org.apache.ratis.protocol.RaftGroup;
import org.apache.ratis.protocol.RaftGroupId;
import org.apache.ratis.thirdparty.com.google.protobuf.ByteString;

import java.io.IOException;

/**
 * Client to connect arithmetic example cluster.
 */
public abstract class Client extends SubCommandBase {


  @Override
  public void run() throws Exception {
    RaftProperties raftProperties = new RaftProperties();

    final RaftGroup raftGroup = RaftGroup.valueOf(RaftGroupId.valueOf(ByteString.copyFromUtf8(getRaftGroupId())),
            getPeers());

    RaftClient.Builder builder =
        RaftClient.newBuilder().setProperties(raftProperties);
    builder.setRaftGroup(raftGroup);
    builder.setClientRpc(new GrpcFactory(new Parameters()).newRaftClientRpc(ClientId.randomId(), raftProperties));
    RaftClient client = builder.build();

    operation(client);


  }

  protected abstract void operation(RaftClient client) throws IOException;
}