runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.slc.core.execution;
  18
  19 import java.util.ArrayList;
  20 import java.util.List;
  21 import java.util.Map;
  22
  23 import org.apache.commons.logging.Log;
  24 import org.apache.commons.logging.LogFactory;
  25 import org.argeo.slc.execution.ExecutionContext;
  26 import org.argeo.slc.execution.ExecutionFlow;
  27 import org.argeo.slc.execution.ExecutionFlowDescriptorConverter;
  28 import org.argeo.slc.execution.ExecutionModulesListener;
  29 import org.argeo.slc.execution.ExecutionModulesManager;
  30 import org.argeo.slc.process.RealizedFlow;
  31 import org.argeo.slc.process.SlcExecution;
  32 import org.argeo.slc.process.SlcExecutionNotifier;
  33
  34 public abstract class AbstractExecutionModulesManager implements
  35                 ExecutionModulesManager {
  36         private final static Log log = LogFactory
  37                         .getLog(AbstractExecutionModulesManager.class);
  38
  39         private List<SlcExecutionNotifier> slcExecutionNotifiers = new ArrayList<SlcExecutionNotifier>();
  40         private List<ExecutionModulesListener> executionModulesListeners = new ArrayList<ExecutionModulesListener>();
  41
  42         private ThreadGroup processesThreadGroup = new ThreadGroup("Processes");
  43
  44         protected abstract ExecutionFlow findExecutionFlow(String moduleName,
  45                         String moduleVersion, String flowName);
  46
  47         protected abstract ExecutionContext findExecutionContext(String moduleName,
  48                         String moduleVersion);
  49
  50         protected abstract ExecutionFlowDescriptorConverter getExecutionFlowDescriptorConverter(
  51                         String moduleName, String moduleVersion);
  52
  53         public void process(SlcExecution slcExecution) {
  54                 new ProcessThread(this, slcExecution).start();
  55         }
  56
  57         public void execute(RealizedFlow realizedFlow) {
  58                 if (log.isTraceEnabled())
  59                         log.trace("Executing " + realizedFlow);
  60
  61                 String moduleName = realizedFlow.getModuleName();
  62                 String moduleVersion = realizedFlow.getModuleVersion();
  63
  64                 Map<? extends String, ? extends Object> variablesToAdd = getExecutionFlowDescriptorConverter(
  65                                 moduleName, moduleVersion).convertValues(
  66                                 realizedFlow.getFlowDescriptor());
  67                 ExecutionContext executionContext = findExecutionContext(moduleName,
  68                                 moduleVersion);
  69                 for (String key : variablesToAdd.keySet())
  70                         executionContext.setVariable(key, variablesToAdd.get(key));
  71
  72                 ExecutionFlow flow = findExecutionFlow(moduleName, moduleVersion,
  73                                 realizedFlow.getFlowDescriptor().getName());
  74
  75                 //
  76                 // Actually runs the flow, IN THIS THREAD
  77                 //
  78                 flow.run();
  79                 //
  80                 //
  81                 //
  82         }
  83
  84         public void setSlcExecutionNotifiers(
  85                         List<SlcExecutionNotifier> slcExecutionNotifiers) {
  86                 this.slcExecutionNotifiers = slcExecutionNotifiers;
  87         }
  88
  89         public List<SlcExecutionNotifier> getSlcExecutionNotifiers() {
  90                 return slcExecutionNotifiers;
  91         }
  92
  93         public ThreadGroup getProcessesThreadGroup() {
  94                 return processesThreadGroup;
  95         }
  96
  97         public List<ExecutionModulesListener> getExecutionModulesListeners() {
  98                 return executionModulesListeners;
  99         }
 100
 101         public void setExecutionModulesListeners(
 102                         List<ExecutionModulesListener> executionModulesListeners) {
 103                 this.executionModulesListeners = executionModulesListeners;
 104         }
 105
 106 }