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.execution.ExecutionModule;
import org.argeo.slc.execution.ExecutionModuleDescriptor;
import org.argeo.slc.execution.ExecutionModulesManager;
-import org.springframework.util.Assert;
+import org.argeo.slc.process.RealizedFlow;
+import org.argeo.slc.process.SlcExecution;
+import org.argeo.slc.process.SlcExecutionNotifier;
+import org.argeo.slc.process.SlcExecutionStep;
public class DefaultModulesManager implements ExecutionModulesManager {
+ private final static Log log = LogFactory
+ .getLog(DefaultModulesManager.class);
+
private List<ExecutionModule> executionModules = new ArrayList<ExecutionModule>();
+ private List<SlcExecutionNotifier> slcExecutionNotifiers = new ArrayList<SlcExecutionNotifier>();
+ private ThreadGroup processesThreadGroup = new ThreadGroup("Processes");
- public ExecutionModuleDescriptor getExecutionModuleDescriptor(
- String moduleName, String version) {
- ExecutionModule module = null;
+ protected ExecutionModule getExecutionModule(String moduleName,
+ String version) {
for (ExecutionModule moduleT : executionModules) {
if (moduleT.getName().equals(moduleName)) {
- // TODO: check version
- module = moduleT;
- break;
+ if (moduleT.getVersion().equals(version)) {
+ return moduleT;
+ }
}
}
+ return null;
+ }
+
+ public ExecutionModuleDescriptor getExecutionModuleDescriptor(
+ String moduleName, String version) {
+ ExecutionModule module = getExecutionModule(moduleName, version);
- Assert.notNull(module);
+ if (module == null)
+ throw new SlcException("Module " + moduleName + " (" + version
+ + ") not found");
return module.getDescriptor();
}
-
-
public List<ExecutionModule> listExecutionModules() {
return executionModules;
}
-
-
public void setExecutionModules(List<ExecutionModule> executionModules) {
this.executionModules = executionModules;
}
+ public void process(SlcExecution slcExecution) {
+ new ProcessThread(processesThreadGroup, slcExecution).start();
+ }
+
+ protected void dispatchUpdateStatus(SlcExecution slcExecution,
+ String oldStatus, String newStatus) {
+ for (Iterator<SlcExecutionNotifier> it = slcExecutionNotifiers
+ .iterator(); it.hasNext();) {
+ it.next().updateStatus(slcExecution, oldStatus, newStatus);
+ }
+ }
+
+ protected synchronized void dispatchAddStep(SlcExecution slcExecution,
+ SlcExecutionStep step) {
+ slcExecution.getSteps().add(step);
+ List<SlcExecutionStep> steps = new ArrayList<SlcExecutionStep>();
+ steps.add(step);
+ for (Iterator<SlcExecutionNotifier> it = slcExecutionNotifiers
+ .iterator(); it.hasNext();) {
+ it.next().addSteps(slcExecution, steps);
+ }
+ }
+
+ public void setSlcExecutionNotifiers(
+ List<SlcExecutionNotifier> slcExecutionNotifiers) {
+ this.slcExecutionNotifiers = slcExecutionNotifiers;
+ }
+
+ /** Thread of the SLC Process, starting the sub executions. */
+ private class ProcessThread extends Thread {
+ private final SlcExecution slcProcess;
+ private final ThreadGroup processThreadGroup;
+ private final List<RealizedFlow> flowsToProcess = new ArrayList<RealizedFlow>();
+
+ public ProcessThread(ThreadGroup processesThreadGroup,
+ SlcExecution slcExecution) {
+ super(processesThreadGroup, "SLC Process #"
+ + slcExecution.getUuid());
+ this.slcProcess = slcExecution;
+ processThreadGroup = new ThreadGroup("SLC Process #"
+ + slcExecution.getUuid() + " thread group");
+ }
+
+ public void run() {
+ log.info("\n##\n## Process SLC Execution " + slcProcess + "\n##\n");
+
+ // FIXME: hack to let the SlcExecution be registered on server
+ try {
+ Thread.sleep(500);
+ } catch (InterruptedException e1) {
+ // silent
+ }
+
+ slcProcess.setStatus(SlcExecution.STATUS_RUNNING);
+ dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_SCHEDULED,
+ SlcExecution.STATUS_RUNNING);
+
+ flowsToProcess.addAll(slcProcess.getRealizedFlows());
+
+ while (flowsToProcess.size() > 0) {
+ RealizedFlow flow = flowsToProcess.remove(0);
+ ExecutionModule module = getExecutionModule(flow
+ .getModuleName(), flow.getModuleVersion());
+ if (module != null) {
+ ExecutionThread thread = new ExecutionThread(this, flow
+ .getFlowDescriptor(), module);
+ thread.start();
+ } else {
+ throw new SlcException("ExecutionModule "
+ + flow.getModuleName() + ", version "
+ + flow.getModuleVersion() + " not found.");
+ }
+
+ synchronized (this) {
+ try {
+ wait();
+ } catch (InterruptedException e) {
+ // silent
+ }
+ }
+ }
+
+ slcProcess.setStatus(SlcExecution.STATUS_FINISHED);
+ dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_RUNNING,
+ SlcExecution.STATUS_FINISHED);
+ }
+
+ public synchronized void flowCompleted() {
+ notifyAll();
+ }
+
+ public SlcExecution getSlcProcess() {
+ return slcProcess;
+ }
+
+ public ThreadGroup getProcessThreadGroup() {
+ return processThreadGroup;
+ }
+ }
+
+ /** Thread of a single execution */
+ private class ExecutionThread extends Thread {
+ private final ExecutionFlowDescriptor executionFlowDescriptor;
+ private final ExecutionModule executionModule;
+ private final ProcessThread processThread;
+
+ public ExecutionThread(ProcessThread processThread,
+ ExecutionFlowDescriptor executionFlowDescriptor,
+ ExecutionModule executionModule) {
+ super(processThread.getProcessThreadGroup(), "Flow "
+ + executionFlowDescriptor.getName());
+ this.executionFlowDescriptor = executionFlowDescriptor;
+ this.executionModule = executionModule;
+ this.processThread = processThread;
+ }
+
+ public void run() {
+ dispatchAddStep(processThread.getSlcProcess(),
+ new SlcExecutionStep(SlcExecutionStep.TYPE_PHASE_START,
+ "Flow " + executionFlowDescriptor.getName()));
+
+ try {
+ executionModule.execute(executionFlowDescriptor);
+ } catch (Exception e) {
+ // TODO: re-throw exception ?
+ String msg = "Execution of flow "
+ + executionFlowDescriptor.getName() + " failed.";
+ log.error(msg, e);
+ dispatchAddStep(processThread.getSlcProcess(),
+ new SlcExecutionStep(msg + " " + e.getMessage()));
+ } finally {
+ processThread.flowCompleted();
+ dispatchAddStep(processThread.getSlcProcess(),
+ new SlcExecutionStep(SlcExecutionStep.TYPE_PHASE_END,
+ "Flow " + executionFlowDescriptor.getName()));
+ }
+ }
+ }
}
projects / gpl / argeo-slc.git / blobdiff