/*
- * Copyright (C) 2007-2012 Mathieu Baudier
+ * Copyright (C) 2007-2012 Argeo GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*/
package org.argeo.slc.core.execution;
+import java.util.ArrayList;
+import java.util.List;
+
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.argeo.slc.SlcException;
import org.argeo.slc.execution.ExecutionFlowDescriptor;
+import org.argeo.slc.execution.ExecutionModulesManager;
import org.argeo.slc.execution.ExecutionStep;
-import org.argeo.slc.process.RealizedFlow;
+import org.argeo.slc.execution.RealizedFlow;
import org.springframework.security.Authentication;
import org.springframework.security.context.SecurityContextHolder;
/** Thread of a single execution */
public class ExecutionThread extends Thread {
public final static String SYSPROP_EXECUTION_AUTO_UPGRADE = "slc.execution.autoupgrade";
-
private final static Log log = LogFactory.getLog(ExecutionThread.class);
+ private ExecutionModulesManager executionModulesManager;
private final RealizedFlow realizedFlow;
- private final ProcessThread processThread;
- public ExecutionThread(ProcessThread processThread,
+ private List<Runnable> destructionCallbacks = new ArrayList<Runnable>();
+
+ public ExecutionThread(ProcessThreadGroup processThreadGroup,
+ ExecutionModulesManager executionModulesManager,
RealizedFlow realizedFlow) {
- super(processThread.getProcessThreadGroup(), "Flow "
+ super(processThreadGroup, "Flow "
+ realizedFlow.getFlowDescriptor().getName());
this.realizedFlow = realizedFlow;
- this.processThread = processThread;
+ this.executionModulesManager = executionModulesManager;
}
public void run() {
throw new SlcException("Can only execute authenticated threads");
SecurityContextHolder.getContext().setAuthentication(authentication);
- if (getContextClassLoader() != null) {
- if (log.isTraceEnabled())
- log.trace("Context class loader set to "
- + getContextClassLoader());
- }
-
// Retrieve execution flow descriptor
ExecutionFlowDescriptor executionFlowDescriptor = realizedFlow
.getFlowDescriptor();
String flowName = executionFlowDescriptor.getName();
- dispatchAddStep(new ExecutionStep(realizedFlow.getModuleName(),
- ExecutionStep.PHASE_START, "Flow " + flowName));
+ getProcessThreadGroup().dispatchAddStep(
+ new ExecutionStep(realizedFlow.getModuleName(),
+ ExecutionStep.PHASE_START, "Flow " + flowName));
try {
String autoUpgrade = System
.getProperty(SYSPROP_EXECUTION_AUTO_UPGRADE);
if (autoUpgrade != null && autoUpgrade.equals("true"))
- processThread.getExecutionModulesManager().upgrade(
- realizedFlow.getModuleNameVersion());
-
+ executionModulesManager.upgrade(realizedFlow
+ .getModuleNameVersion());
+ executionModulesManager.start(realizedFlow.getModuleNameVersion());
+ //
// START FLOW
- processThread.getExecutionModulesManager().execute(realizedFlow);
+ //
+ executionModulesManager.execute(realizedFlow);
// END FLOW
+ } catch (FlowConfigurationException e) {
+ String msg = "Configuration problem with flow " + flowName + ":\n"
+ + e.getMessage();
+ log.error(msg);
+ getProcessThreadGroup().dispatchAddStep(
+ new ExecutionStep(realizedFlow.getModuleName(),
+ ExecutionStep.ERROR, msg + " " + e.getMessage()));
} catch (Exception e) {
// TODO: re-throw exception ?
String msg = "Execution of flow " + flowName + " failed.";
log.error(msg, e);
- dispatchAddStep(new ExecutionStep(realizedFlow.getModuleName(),
- ExecutionStep.ERROR, msg + " " + e.getMessage()));
- processThread.notifyError();
+ getProcessThreadGroup().dispatchAddStep(
+ new ExecutionStep(realizedFlow.getModuleName(),
+ ExecutionStep.ERROR, msg + " " + e.getMessage()));
} finally {
- processThread.flowCompleted();
- dispatchAddStep(new ExecutionStep(realizedFlow.getModuleName(),
- ExecutionStep.PHASE_END, "Flow " + flowName));
+ getProcessThreadGroup().dispatchAddStep(
+ new ExecutionStep(realizedFlow.getModuleName(),
+ ExecutionStep.PHASE_END, "Flow " + flowName));
+ processDestructionCallbacks();
}
}
- private void dispatchAddStep(ExecutionStep step) {
- processThread.getProcessThreadGroup().dispatchAddStep(step);
+ private synchronized void processDestructionCallbacks() {
+ for (int i = destructionCallbacks.size() - 1; i >= 0; i--) {
+ try {
+ destructionCallbacks.get(i).run();
+ } catch (Exception e) {
+ log.warn("Could not process destruction callback " + i
+ + " in thread " + getName(), e);
+ }
+ }
}
- protected ProcessThreadGroup getProcessThreadGroup() {
- return processThread.getProcessThreadGroup();
+ /**
+ * Gather object destruction callback to be called in reverse order at the
+ * end of the thread
+ */
+ synchronized void registerDestructionCallback(String name, Runnable callback) {
+ destructionCallbacks.add(callback);
}
- public RealizedFlow getRealizedFlow() {
- return realizedFlow;
+ protected ProcessThreadGroup getProcessThreadGroup() {
+ return (ProcessThreadGroup) getThreadGroup();
}
-
-}
+}
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