plugins/org.argeo.slc.client.ui/src/main/java/org/argeo/slc/client/ui/editors/ProcessEditor.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.client.ui.editors;
  17
  18 import java.util.HashMap;
  19 import java.util.Map;
  20 import java.util.UUID;
  21
  22 import javax.jcr.Node;
  23 import javax.jcr.NodeIterator;
  24 import javax.jcr.Property;
  25 import javax.jcr.RepositoryException;
  26 import javax.jcr.Session;
  27
  28 import org.argeo.eclipse.ui.ErrorFeedback;
  29 import org.argeo.jcr.JcrUtils;
  30 import org.argeo.slc.SlcException;
  31 import org.argeo.slc.client.ui.ClientUiPlugin;
  32 import org.argeo.slc.client.ui.controllers.ProcessController;
  33 import org.argeo.slc.execution.ExecutionModulesManager;
  34 import org.argeo.slc.execution.ExecutionProcess;
  35 import org.argeo.slc.jcr.SlcJcrUtils;
  36 import org.argeo.slc.jcr.SlcNames;
  37 import org.argeo.slc.jcr.SlcTypes;
  38 import org.eclipse.core.runtime.IProgressMonitor;
  39 import org.eclipse.ui.IEditorInput;
  40 import org.eclipse.ui.IEditorSite;
  41 import org.eclipse.ui.IWorkbenchPage;
  42 import org.eclipse.ui.PartInitException;
  43 import org.eclipse.ui.PlatformUI;
  44 import org.eclipse.ui.forms.editor.FormEditor;
  45
  46 /** Editor for an execution process. */
  47 public class ProcessEditor extends FormEditor implements SlcTypes, SlcNames {
  48         public final static String ID = ClientUiPlugin.ID + ".processEditor";
  49
  50         private Session session;
  51         private Node processNode;
  52         private ProcessController processController;
  53
  54         private ProcessBuilderPage builderPage;
  55
  56         private ExecutionModulesManager modulesManager;
  57
  58         @Override
  59         public void init(IEditorSite site, IEditorInput input)
  60                         throws PartInitException {
  61                 super.init(site, input);
  62                 ProcessEditorInput pei = (ProcessEditorInput) input;
  63                 String processPath = pei.getProcessPath();
  64                 try {
  65                         if (processPath != null) {
  66                                 if (!session.itemExists(processPath))
  67                                         throw new SlcException("Process " + processPath
  68                                                         + " does not exist");
  69                                 processNode = session.getNode(processPath);
  70                         } else {// new
  71                                 processNode = newProcessNode(pei);
  72                         }
  73                         setPartName(processNode.getName());
  74                 } catch (RepositoryException e) {
  75                         throw new SlcException("Cannot initialize editor for " + pei, e);
  76                 }
  77
  78         }
  79
  80         protected Node newProcessNode(ProcessEditorInput pei)
  81                         throws RepositoryException {
  82                 String uuid = UUID.randomUUID().toString();
  83                 String processPath = SlcJcrUtils.createExecutionProcessPath(session,
  84                                 uuid);
  85                 Node processNode = JcrUtils.mkdirs(session, processPath, SLC_PROCESS);
  86                 processNode.setProperty(SLC_UUID, uuid);
  87                 processNode.setProperty(SLC_STATUS, ExecutionProcess.NEW);
  88                 Node processFlow = processNode.addNode(SLC_FLOW);
  89                 processFlow.addMixin(SLC_REALIZED_FLOW);
  90                 return processNode;
  91         }
  92
  93         @Override
  94         public boolean isDirty() {
  95                 if (getProcessStatus().equals(ExecutionProcess.NEW))
  96                         return true;
  97                 return super.isDirty();
  98         }
  99
 100         protected String getProcessStatus() {
 101                 try {
 102                         return processNode.getProperty(SLC_STATUS).getString();
 103                 } catch (RepositoryException e) {
 104                         throw new SlcException("Cannot retrieve status for " + processNode,
 105                                         e);
 106                 }
 107         }
 108
 109         @Override
 110         public void dispose() {
 111                 JcrUtils.logoutQuietly(session);
 112         }
 113
 114         /** Actually runs the process. */
 115         void process() {
 116                 // the modifications have to be saved before execution
 117                 try {
 118                         processNode.setProperty(SLC_STATUS, ExecutionProcess.SCHEDULED);
 119                 } catch (RepositoryException e) {
 120                         throw new SlcException("Cannot update status of " + processNode, e);
 121                 }
 122
 123                 // save
 124                 doSave(null);
 125
 126                 try {
 127                         // make sure modules are started for all nodes
 128                         for (NodeIterator nit = processNode.getNode(SLC_FLOW).getNodes(); nit
 129                                         .hasNext();) {
 130                                 Node flowNode = nit.nextNode();
 131                                 try {
 132                                         String flowDefPath = flowNode.getNode(SLC_ADDRESS)
 133                                                         .getProperty(Property.JCR_PATH).getString();
 134                                         Node executionModuleNode = flowNode.getSession().getNode(
 135                                                         SlcJcrUtils.modulePath(flowDefPath));
 136                                         if (!executionModuleNode.getProperty(SLC_STARTED)
 137                                                         .getBoolean())
 138                                                 ClientUiPlugin.startStopExecutionModule(modulesManager,
 139                                                                 executionModuleNode);
 140                                 } catch (Exception e) {
 141                                         ErrorFeedback.show(
 142                                                         "Cannot start execution module related to "
 143                                                                         + flowNode, e);
 144                                 }
 145                         }
 146
 147                         // Actually process
 148                         ExecutionProcess process = processController.process(processNode);
 149                         Map<String, String> properties = new HashMap<String, String>();
 150                         properties.put(ExecutionModulesManager.SLC_PROCESS_ID,
 151                                         process.getUuid());
 152                         // modulesManager.registerProcessNotifier(this, properties);
 153                 } catch (Exception e) {
 154                         ErrorFeedback.show("Execution of " + processNode + " failed", e);
 155                 }
 156         }
 157
 158         void kill() {
 159                 processController.kill(processNode);
 160         }
 161
 162         /** Opens a new editor with a copy of this process */
 163         void relaunch() {
 164                 try {
 165                         Node duplicatedNode = duplicateProcess();
 166                         IWorkbenchPage activePage = PlatformUI.getWorkbench()
 167                                         .getActiveWorkbenchWindow().getActivePage();
 168                         activePage.openEditor(
 169                                         new ProcessEditorInput(duplicatedNode.getPath()),
 170                                         ProcessEditor.ID);
 171                         close(false);
 172                 } catch (Exception e1) {
 173                         throw new SlcException("Cannot relaunch " + processNode, e1);
 174                 }
 175         }
 176
 177         /** Duplicates the process */
 178         protected Node duplicateProcess() {
 179                 try {
 180                         Session session = processNode.getSession();
 181                         String uuid = UUID.randomUUID().toString();
 182                         String destPath = SlcJcrUtils.createExecutionProcessPath(session,
 183                                         uuid);
 184                         Node newNode = JcrUtils.mkdirs(session, destPath,
 185                                         SlcTypes.SLC_PROCESS);
 186
 187                         Node rootRealizedFlowNode = newNode.addNode(SLC_FLOW);
 188                         // copy node
 189                         JcrUtils.copy(processNode.getNode(SLC_FLOW), rootRealizedFlowNode);
 190
 191                         newNode.setProperty(SLC_UUID, uuid);
 192                         newNode.setProperty(SLC_STATUS, ExecutionProcess.INITIALIZED);
 193
 194                         // reset realized flow status
 195                         // we just manage one level for the time being
 196                         NodeIterator nit = rootRealizedFlowNode.getNodes(SLC_FLOW);
 197                         while (nit.hasNext()) {
 198                                 nit.nextNode().setProperty(SLC_STATUS,
 199                                                 ExecutionProcess.INITIALIZED);
 200                         }
 201
 202                         session.save();
 203                         return newNode;
 204                 } catch (RepositoryException e) {
 205                         throw new SlcException("Cannot duplicate process", e);
 206                 }
 207         }
 208
 209         @Override
 210         protected void addPages() {
 211                 try {
 212                         builderPage = new ProcessBuilderPage(this, processNode);
 213                         addPage(builderPage);
 214                         firePropertyChange(PROP_DIRTY);
 215                 } catch (PartInitException e) {
 216                         throw new SlcException("Cannot add pages", e);
 217                 }
 218
 219         }
 220
 221         @Override
 222         public void doSave(IProgressMonitor monitor) {
 223                 try {
 224                         String status = processNode.getProperty(SLC_STATUS).getString();
 225                         if (status.equals(ExecutionProcess.NEW))
 226                                 processNode.setProperty(SLC_STATUS,
 227                                                 ExecutionProcess.INITIALIZED);
 228                         session.save();
 229                         builderPage.commit(true);
 230                         editorDirtyStateChanged();
 231                 } catch (RepositoryException e) {
 232                         throw new SlcException("Cannot save " + processNode, e);
 233                 } finally {
 234                         JcrUtils.discardQuietly(session);
 235                 }
 236         }
 237
 238         @Override
 239         public void doSaveAs() {
 240         }
 241
 242         @Override
 243         public boolean isSaveAsAllowed() {
 244                 return false;
 245         }
 246
 247         // public void updateStatus(ExecutionProcess process, String oldStatus,
 248         // String newStatus) {
 249         // }
 250         //
 251         // public void addSteps(ExecutionProcess process, List<ExecutionStep> steps)
 252         // {
 253         // }
 254
 255         /** Expects one session per editor. */
 256         public void setSession(Session session) {
 257                 this.session = session;
 258         }
 259
 260         public void setProcessController(ProcessController processController) {
 261                 this.processController = processController;
 262         }
 263
 264         public void setModulesManager(ExecutionModulesManager modulesManager) {
 265                 this.modulesManager = modulesManager;
 266         }
 267
 268 }