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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.omid.tso;
19  
20  import org.apache.commons.daemon.Daemon;
21  import org.apache.commons.daemon.DaemonContext;
22  import org.slf4j.Logger;
23  import org.slf4j.LoggerFactory;
24  
25  /**
26   * Wraps TSO Server as a Daemon
27   */
28  public class TsoServerDaemon implements Daemon {
29  
30      private static final Logger LOG = LoggerFactory.getLogger(TsoServerDaemon.class);
31      private TSOServer tsoServer;
32  
33      @Override
34      public void init(DaemonContext daemonContext) throws Exception {
35          try {
36              TSOServerConfig config = new TSOServerConfig();
37              LOG.info("Creating TSOServer instance as a Daemon process...");
38              tsoServer = TSOServer.getInitializedTsoServer(config);
39              LOG.info("TSOServer instance for Daemon process created");
40          } catch (Exception e) {
41              LOG.error("Error creating TSOServer instance", e);
42              throw e;
43          }
44      }
45  
46      @Override
47      public void start() throws Exception {
48          tsoServer.startAndWait();
49      }
50  
51      @Override
52      public void stop() throws Exception {
53          tsoServer.stopAndWait();
54      }
55  
56      @Override
57      public void destroy() {
58      }
59  
60  }