+/*
+ * Copyright (C) 2007-2012 Mathieu Baudier
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
package org.argeo.slc.core.execution;
import java.util.ArrayList;
-import java.util.Iterator;
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.process.RealizedFlow;
-import org.argeo.slc.process.SlcExecution;
-import org.argeo.slc.process.SlcExecutionNotifier;
-import org.argeo.slc.process.SlcExecutionStep;
+import org.argeo.slc.execution.ExecutionStep;
+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 final RealizedFlow realizedFlow;
private final ProcessThread processThread;
+ private List<Runnable> destructionCallbacks = new ArrayList<Runnable>();
+
public ExecutionThread(ProcessThread processThread,
RealizedFlow realizedFlow) {
super(processThread.getProcessThreadGroup(), "Flow "
}
public void run() {
- if (getContextClassLoader() != null) {
- if (log.isTraceEnabled())
- log.debug("Context class loader set to "
- + getContextClassLoader());
- }
+ // authenticate thread
+ Authentication authentication = getProcessThreadGroup()
+ .getAuthentication();
+ if (authentication == null)
+ throw new SlcException("Can only execute authenticated threads");
+ SecurityContextHolder.getContext().setAuthentication(authentication);
// Retrieve execution flow descriptor
ExecutionFlowDescriptor executionFlowDescriptor = realizedFlow
.getFlowDescriptor();
String flowName = executionFlowDescriptor.getName();
- dispatchAddStep(processThread.getSlcProcess(), new SlcExecutionStep(
- SlcExecutionStep.TYPE_PHASE_START, "Flow " + flowName));
+ 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());
+
+ // START FLOW
processThread.getExecutionModulesManager().execute(realizedFlow);
+ // END FLOW
} catch (Exception e) {
// TODO: re-throw exception ?
String msg = "Execution of flow " + flowName + " failed.";
log.error(msg, e);
- dispatchAddStep(processThread.getSlcProcess(),
- new SlcExecutionStep(msg + " " + e.getMessage()));
+ dispatchAddStep(new ExecutionStep(realizedFlow.getModuleName(),
+ ExecutionStep.ERROR, msg + " " + e.getMessage()));
processThread.notifyError();
} finally {
processThread.flowCompleted();
- dispatchAddStep(processThread.getSlcProcess(),
- new SlcExecutionStep(SlcExecutionStep.TYPE_PHASE_END,
- "Flow " + flowName));
+ dispatchAddStep(new ExecutionStep(realizedFlow.getModuleName(),
+ ExecutionStep.PHASE_END, "Flow " + flowName));
+ processDestructionCallbacks();
}
}
- protected void dispatchAddStep(SlcExecution slcExecution,
- SlcExecutionStep step) {
- slcExecution.getSteps().add(step);
- List<SlcExecutionStep> steps = new ArrayList<SlcExecutionStep>();
- steps.add(step);
- for (Iterator<SlcExecutionNotifier> it = processThread
- .getExecutionModulesManager().getSlcExecutionNotifiers()
- .iterator(); it.hasNext();) {
- it.next().addSteps(slcExecution, steps);
+ 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);
+ }
}
}
+
+ /**
+ * 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);
+ }
+
+ protected ProcessThreadGroup getProcessThreadGroup() {
+ return processThread.getProcessThreadGroup();
+ }
+
+ public RealizedFlow getRealizedFlow() {
+ return realizedFlow;
+ }
+
}