| /** |
| * 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.storm.drpc; |
| |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.apache.storm.generated.DRPCRequest; |
| import org.apache.storm.generated.DistributedRPCInvocations; |
| import org.apache.storm.generated.AuthorizationException; |
| import org.apache.storm.security.auth.ThriftClient; |
| import org.apache.storm.security.auth.ThriftConnectionType; |
| import org.apache.thrift.transport.TTransportException; |
| import org.apache.thrift.TException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class DRPCInvocationsClient extends ThriftClient implements DistributedRPCInvocations.Iface { |
| public static final Logger LOG = LoggerFactory.getLogger(DRPCInvocationsClient.class); |
| private final AtomicReference<DistributedRPCInvocations.Client> client = new AtomicReference<>(); |
| private String host; |
| private int port; |
| |
| public DRPCInvocationsClient(Map conf, String host, int port) throws TTransportException { |
| super(conf, ThriftConnectionType.DRPC_INVOCATIONS, host, port, null); |
| this.host = host; |
| this.port = port; |
| client.set(new DistributedRPCInvocations.Client(_protocol)); |
| } |
| |
| public String getHost() { |
| return host; |
| } |
| |
| public int getPort() { |
| return port; |
| } |
| |
| public void reconnectClient() throws TException { |
| if (client.get() == null) { |
| reconnect(); |
| client.set(new DistributedRPCInvocations.Client(_protocol)); |
| } |
| } |
| |
| public boolean isConnected() { |
| return client.get() != null; |
| } |
| |
| public void result(String id, String result) throws TException, AuthorizationException { |
| DistributedRPCInvocations.Client c = client.get(); |
| try { |
| if (c == null) { |
| throw new TException("Client is not connected..."); |
| } |
| c.result(id, result); |
| } catch(AuthorizationException aze) { |
| throw aze; |
| } catch(TException e) { |
| client.compareAndSet(c, null); |
| throw e; |
| } |
| } |
| |
| public DRPCRequest fetchRequest(String func) throws TException, AuthorizationException { |
| DistributedRPCInvocations.Client c = client.get(); |
| try { |
| if (c == null) { |
| throw new TException("Client is not connected..."); |
| } |
| return c.fetchRequest(func); |
| } catch(AuthorizationException aze) { |
| throw aze; |
| } catch(TException e) { |
| client.compareAndSet(c, null); |
| throw e; |
| } |
| } |
| |
| public void failRequest(String id) throws TException, AuthorizationException { |
| DistributedRPCInvocations.Client c = client.get(); |
| try { |
| if (c == null) { |
| throw new TException("Client is not connected..."); |
| } |
| c.failRequest(id); |
| } catch(AuthorizationException aze) { |
| throw aze; |
| } catch(TException e) { |
| client.compareAndSet(c, null); |
| throw e; |
| } |
| } |
| |
| public DistributedRPCInvocations.Client getClient() { |
| return client.get(); |
| } |
| } |