engine/compbio/engine/local/LocalRunner.java

   1 /* Copyright (c) 2009 Peter Troshin\r
   2  *  \r
   3  *  JAva Bioinformatics Analysis Web Services (JABAWS) @version: 1.0     \r
   4  * \r
   5  *  This library is free software; you can redistribute it and/or modify it under the terms of the\r
   6  *  Apache License version 2 as published by the Apache Software Foundation\r
   7  * \r
   8  *  This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without\r
   9  *  even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Apache \r
  10  *  License for more details.\r
  11  * \r
  12  *  A copy of the license is in apache_license.txt. It is also available here:\r
  13  * @see: http://www.apache.org/licenses/LICENSE-2.0.txt\r
  14  * \r
  15  * Any republication or derived work distributed in source code form\r
  16  * must include this copyright and license notice.\r
  17  */\r
  18 \r
  19 package compbio.engine.local;\r
  20 \r
  21 import java.io.IOException;\r
  22 import java.util.concurrent.CancellationException;\r
  23 import java.util.concurrent.ExecutorService;\r
  24 import java.util.concurrent.Future;\r
  25 \r
  26 import org.apache.log4j.Logger;\r
  27 \r
  28 import compbio.engine.SyncExecutor;\r
  29 import compbio.engine.client.ConfiguredExecutable;\r
  30 import compbio.metadata.JobExecutionException;\r
  31 import compbio.metadata.JobStatus;\r
  32 import compbio.metadata.JobSubmissionException;\r
  33 import compbio.metadata.ResultNotAvailableException;\r
  34 \r
  35 public final class LocalRunner implements SyncExecutor {\r
  36 \r
  37         private static final Logger log = Logger.getLogger(LocalRunner.class);\r
  38         /*\r
  39          * If is not advisable to start threads statically, thus this field is not static\r
  40          */\r
  41         private final ExecutorService executor;\r
  42         private final ConfiguredExecutable<?> executable;\r
  43         private Future<ConfiguredExecutable<?>> future;\r
  44         private final String workDirectory;\r
  45 \r
  46         public LocalRunner(ConfiguredExecutable<?> executable) {\r
  47                 if (executable == null) {\r
  48                         throw new IllegalArgumentException("Executable value is NULL. Executable must be provided!");\r
  49                 }\r
  50                 this.executor = LocalExecutorService.getExecutor();\r
  51                 this.executable = executable;\r
  52                 this.workDirectory = executable.getWorkDirectory();\r
  53                 // Save run configuration\r
  54                 try {\r
  55                         executable.saveRunConfiguration();\r
  56                 } catch (IOException e) {\r
  57                         log.error("Could not save run configuration! " + e.getMessage(), e.getCause());\r
  58                 }\r
  59         }\r
  60 \r
  61         @Override\r
  62         public String getWorkDirectory() {\r
  63                 return this.workDirectory;\r
  64         }\r
  65 \r
  66         @Override\r
  67         public boolean cancelJob() {\r
  68                 return LocalEngineUtil.cancelJob(future, getWorkDirectory());\r
  69         }\r
  70 \r
  71         Future<ConfiguredExecutable<?>> getFuture() {\r
  72                 return this.future;\r
  73         }\r
  74 \r
  75         @Override\r
  76         public JobStatus getJobStatus() {\r
  77                 if (future == null) {\r
  78                         return LocalEngineUtil.getRecordedJobStatus(executable.getTaskId());\r
  79                 }\r
  80                 return LocalEngineUtil.getJobStatus(future);\r
  81         }\r
  82 \r
  83         @Override\r
  84         public void executeJob()\r
  85                         throws JobSubmissionException {\r
  86                 ExecutableWrapper ewrapper = new ExecutableWrapper(executable, workDirectory);\r
  87                 this.future = executor.submit(ewrapper);\r
  88         }\r
  89 \r
  90         /**\r
  91          * @throws CancellationException\r
  92          */\r
  93         @Override\r
  94         public ConfiguredExecutable<?> waitForResult()\r
  95                         throws JobExecutionException {\r
  96                 try {\r
  97                         return LocalEngineUtil.getResults(future, executable.getTaskId());\r
  98                 } catch (ResultNotAvailableException e) {\r
  99                         throw new JobExecutionException(e);\r
 100                 }\r
 101         }\r
 102 \r
 103         @Override\r
 104         public boolean cleanup() {\r
 105                 return LocalEngineUtil.cleanup(executable);\r
 106         }\r
 107 \r
 108 }\r