+/*
+ * 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.
+ * 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.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
import java.util.List;
+import java.util.Map;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.slc.execution.ExecutionContext;
+import org.argeo.slc.execution.ExecutionFlow;
+import org.argeo.slc.execution.ExecutionFlowDescriptorConverter;
import org.argeo.slc.execution.ExecutionModulesManager;
-import org.argeo.slc.process.SlcExecution;
+import org.argeo.slc.execution.ExecutionProcess;
+import org.argeo.slc.execution.ExecutionProcessNotifier;
+import org.argeo.slc.execution.ExecutionStep;
+import org.argeo.slc.execution.RealizedFlow;
import org.argeo.slc.process.SlcExecutionNotifier;
+/** Provides the base feature of an execution module manager. */
+@SuppressWarnings("deprecation")
public abstract class AbstractExecutionModulesManager implements
ExecutionModulesManager {
+ private final static Log log = LogFactory
+ .getLog(AbstractExecutionModulesManager.class);
+
private List<SlcExecutionNotifier> slcExecutionNotifiers = new ArrayList<SlcExecutionNotifier>();
- private ThreadGroup processesThreadGroup = new ThreadGroup("Processes");
- public void process(SlcExecution slcExecution) {
- new ProcessThread(this, slcExecution).start();
+ private List<FilteredNotifier> filteredNotifiers = Collections
+ .synchronizedList(new ArrayList<FilteredNotifier>());
+
+ protected abstract ExecutionFlow findExecutionFlow(String moduleName,
+ String moduleVersion, String flowName);
+
+ protected abstract ExecutionContext findExecutionContext(String moduleName,
+ String moduleVersion);
+
+ protected abstract ExecutionFlowDescriptorConverter getExecutionFlowDescriptorConverter(
+ String moduleName, String moduleVersion);
+
+ public void execute(RealizedFlow realizedFlow) {
+ if (log.isTraceEnabled())
+ log.trace("Executing " + realizedFlow);
+
+ String moduleName = realizedFlow.getModuleName();
+ String moduleVersion = realizedFlow.getModuleVersion();
+
+ Map<? extends String, ? extends Object> variablesToAdd = getExecutionFlowDescriptorConverter(
+ moduleName, moduleVersion).convertValues(
+ realizedFlow.getFlowDescriptor());
+ ExecutionContext executionContext = findExecutionContext(moduleName,
+ moduleVersion);
+ for (String key : variablesToAdd.keySet())
+ executionContext.setVariable(key, variablesToAdd.get(key));
+
+ ExecutionFlow flow = findExecutionFlow(moduleName, moduleVersion,
+ realizedFlow.getFlowDescriptor().getName());
+
+ //
+ // Actually runs the flow, IN THIS THREAD
+ //
+ flow.run();
+ //
+ //
+ //
+ }
+
+ public void dispatchUpdateStatus(ExecutionProcess process,
+ String oldStatus, String newStatus) {
+ // generic notifiers (notified of everything)
+ for (Iterator<SlcExecutionNotifier> it = getSlcExecutionNotifiers()
+ .iterator(); it.hasNext();) {
+ it.next().updateStatus(process, oldStatus, newStatus);
+ }
+
+ // filtered notifiers
+ for (Iterator<FilteredNotifier> it = filteredNotifiers.iterator(); it
+ .hasNext();) {
+ FilteredNotifier filteredNotifier = it.next();
+ if (filteredNotifier.receiveFrom(process))
+ filteredNotifier.getNotifier().updateStatus(process, oldStatus,
+ newStatus);
+ }
+
+ }
+
+ public void dispatchAddSteps(ExecutionProcess process,
+ List<ExecutionStep> steps) {
+ process.addSteps(steps);
+
+ for (Iterator<SlcExecutionNotifier> it = getSlcExecutionNotifiers()
+ .iterator(); it.hasNext();) {
+ it.next().addSteps(process, steps);
+ }
+
+ for (Iterator<FilteredNotifier> it = filteredNotifiers.iterator(); it
+ .hasNext();) {
+ FilteredNotifier filteredNotifier = it.next();
+ if (filteredNotifier.receiveFrom(process))
+ filteredNotifier.getNotifier().addSteps(process, steps);
+ }
+ }
+
+ public void registerProcessNotifier(ExecutionProcessNotifier notifier,
+ Map<String, String> properties) {
+ filteredNotifiers.add(new FilteredNotifier(notifier, properties));
+ }
+
+ public void unregisterProcessNotifier(ExecutionProcessNotifier notifier,
+ Map<String, String> properties) {
+ filteredNotifiers.remove(notifier);
}
public void setSlcExecutionNotifiers(
this.slcExecutionNotifiers = slcExecutionNotifiers;
}
- public List<SlcExecutionNotifier> getSlcExecutionNotifiers() {
+ private List<SlcExecutionNotifier> getSlcExecutionNotifiers() {
return slcExecutionNotifiers;
}
- public ThreadGroup getProcessesThreadGroup() {
- return processesThreadGroup;
- }
+ protected class FilteredNotifier {
+ private final ExecutionProcessNotifier notifier;
+ private final String processId;
+
+ public FilteredNotifier(ExecutionProcessNotifier notifier,
+ Map<String, String> properties) {
+ super();
+ this.notifier = notifier;
+ if (properties == null)
+ properties = new HashMap<String, String>();
+ if (properties.containsKey(SLC_PROCESS_ID))
+ processId = properties.get(SLC_PROCESS_ID);
+ else
+ processId = null;
+ }
+
+ /**
+ * Whether event from this process should be received by this listener.
+ */
+ public Boolean receiveFrom(ExecutionProcess process) {
+ if (processId != null)
+ if (process.getUuid().equals(processId))
+ return true;
+ else
+ return false;
+ return true;
+ }
+
+ @Override
+ public int hashCode() {
+ return notifier.hashCode();
+ }
+ @Override
+ public boolean equals(Object obj) {
+ if (obj instanceof FilteredNotifier) {
+ FilteredNotifier fn = (FilteredNotifier) obj;
+ return notifier.equals(fn.notifier);
+ } else if (obj instanceof ExecutionProcessNotifier) {
+ ExecutionProcessNotifier epn = (ExecutionProcessNotifier) obj;
+ return notifier.equals(epn);
+ } else
+ return false;
+ }
+
+ public ExecutionProcessNotifier getNotifier() {
+ return notifier;
+ }
+
+ }
}
projects / gpl / argeo-slc.git / blobdiff