Move SLC Core

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

diff --git a/org.argeo.slc.core/src/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java b/org.argeo.slc.core/src/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java
new file mode 100644 (file)
index 0000000..1a07313
--- /dev/null
+++ b/org.argeo.slc.core/src/org/argeo/slc/core/execution/AbstractExecutionModulesManager.java
@@ -0,0 +1,157 @@
+/*
+ * 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
+               //
+               flow.run();
+               //
+               //
+               //
+       }
+
+//     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;
+//             }
+//
+//     }
+}