Rename SLC Core into SLC Spring.

[gpl/argeo-slc.git] / org.argeo.slc.spring / src / org / argeo / slc / core / execution / AbstractExecutionModulesManager.java

diff --git a/org.argeo.slc.spring/src/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java b/org.argeo.slc.spring/src/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java
new file mode 100644 (file)
index 0000000..1d401c6
--- /dev/null
+++ b/org.argeo.slc.spring/src/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java
@@ -0,0 +1,162 @@
+/*
+ * 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.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.execution.RealizedFlow;
+
+/** Provides the base feature of an execution module manager. */
+public abstract class AbstractExecutionModulesManager implements
+               ExecutionModulesManager {
+       private final static Log log = LogFactory
+                       .getLog(AbstractExecutionModulesManager.class);
+
+       // 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
+               //
+               executionContext.beforeFlow(flow);
+               try {
+                       flow.run();
+               } finally {
+                       executionContext.afterFlow(flow);
+               }
+               //
+               //
+               //
+       }
+
+       // public void dispatchUpdateStatus(ExecutionProcess process,
+       // String oldStatus, String 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<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);
+       // }
+
+       // 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;
+       // }
+       //
+       // }
+}