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.Iterator;
  21 import java.util.List;
  22 import java.util.Map;
  23
  24 import org.apache.commons.logging.Log;
  25 import org.apache.commons.logging.LogFactory;
  26 import org.argeo.slc.execution.ExecutionContext;
  27 import org.argeo.slc.execution.ExecutionFlow;
  28 import org.argeo.slc.execution.ExecutionFlowDescriptorConverter;
  29 import org.argeo.slc.execution.ExecutionModulesManager;
  30 import org.argeo.slc.execution.ExecutionProcess;
  31 import org.argeo.slc.process.RealizedFlow;
  32 import org.argeo.slc.process.SlcExecutionNotifier;
  33 import org.argeo.slc.process.SlcExecutionStep;
  34
  35 /** Provides the base feature of an execution module manager. */
  36 @SuppressWarnings("deprecation")
  37 public abstract class AbstractExecutionModulesManager implements
  38                 ExecutionModulesManager {
  39         private final static Log log = LogFactory
  40                         .getLog(AbstractExecutionModulesManager.class);
  41
  42         private List<SlcExecutionNotifier> slcExecutionNotifiers = new ArrayList<SlcExecutionNotifier>();
  43
  44         private ThreadGroup processesThreadGroup = new ThreadGroup("Processes");
  45
  46         protected abstract ExecutionFlow findExecutionFlow(String moduleName,
  47                         String moduleVersion, String flowName);
  48
  49         protected abstract ExecutionContext findExecutionContext(String moduleName,
  50                         String moduleVersion);
  51
  52         protected abstract ExecutionFlowDescriptorConverter getExecutionFlowDescriptorConverter(
  53                         String moduleName, String moduleVersion);
  54
  55         public void execute(RealizedFlow realizedFlow) {
  56                 if (log.isTraceEnabled())
  57                         log.trace("Executing " + realizedFlow);
  58
  59                 String moduleName = realizedFlow.getModuleName();
  60                 String moduleVersion = realizedFlow.getModuleVersion();
  61
  62                 Map<? extends String, ? extends Object> variablesToAdd = getExecutionFlowDescriptorConverter(
  63                                 moduleName, moduleVersion).convertValues(
  64                                 realizedFlow.getFlowDescriptor());
  65                 ExecutionContext executionContext = findExecutionContext(moduleName,
  66                                 moduleVersion);
  67                 for (String key : variablesToAdd.keySet())
  68                         executionContext.setVariable(key, variablesToAdd.get(key));
  69
  70                 ExecutionFlow flow = findExecutionFlow(moduleName, moduleVersion,
  71                                 realizedFlow.getFlowDescriptor().getName());
  72
  73                 //
  74                 // Actually runs the flow, IN THIS THREAD
  75                 //
  76                 flow.run();
  77                 //
  78                 //
  79                 //
  80         }
  81
  82         public void dispatchUpdateStatus(ExecutionProcess slcExecution,
  83                         String oldStatus, String newStatus) {
  84                 for (Iterator<SlcExecutionNotifier> it = getSlcExecutionNotifiers()
  85                                 .iterator(); it.hasNext();) {
  86                         it.next().updateStatus(slcExecution, oldStatus, newStatus);
  87                 }
  88         }
  89
  90         public void dispatchAddStep(ExecutionProcess slcExecution,
  91                         SlcExecutionStep step) {
  92                 List<SlcExecutionStep> steps = new ArrayList<SlcExecutionStep>();
  93                 steps.add(step);
  94                 for (Iterator<SlcExecutionNotifier> it = getSlcExecutionNotifiers()
  95                                 .iterator(); it.hasNext();) {
  96                         it.next().addSteps(slcExecution, steps);
  97                 }
  98         }
  99
 100         public void setSlcExecutionNotifiers(
 101                         List<SlcExecutionNotifier> slcExecutionNotifiers) {
 102                 this.slcExecutionNotifiers = slcExecutionNotifiers;
 103         }
 104
 105         public List<SlcExecutionNotifier> getSlcExecutionNotifiers() {
 106                 return slcExecutionNotifiers;
 107         }
 108
 109         public ThreadGroup getProcessesThreadGroup() {
 110                 return processesThreadGroup;
 111         }
 112
 113 }