org.argeo.slc.client.ui/src/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.Repository;
  26 import javax.jcr.RepositoryException;
  27 import javax.jcr.Session;
  28
  29 import org.argeo.eclipse.ui.dialogs.ErrorFeedback;
  30 import org.argeo.jcr.JcrUtils;
  31 import org.argeo.slc.SlcException;
  32 import org.argeo.slc.client.ui.ClientUiPlugin;
  33 import org.argeo.slc.client.ui.controllers.ProcessController;
  34 import org.argeo.slc.execution.ExecutionModulesManager;
  35 import org.argeo.slc.execution.ExecutionProcess;
  36 import org.argeo.slc.jcr.SlcJcrUtils;
  37 import org.argeo.slc.jcr.SlcNames;
  38 import org.argeo.slc.jcr.SlcTypes;
  39 import org.eclipse.core.runtime.IProgressMonitor;
  40 import org.eclipse.ui.IEditorInput;
  41 import org.eclipse.ui.IEditorSite;
  42 import org.eclipse.ui.IWorkbenchPage;
  43 import org.eclipse.ui.PartInitException;
  44 import org.eclipse.ui.PlatformUI;
  45 import org.eclipse.ui.forms.editor.FormEditor;
  46
  47 /** Editor for an execution process. */
  48 public class ProcessEditor extends FormEditor implements SlcTypes, SlcNames {
  49         private static final long serialVersionUID = 509589737739132467L;
  50
  51         public final static String ID = ClientUiPlugin.ID + ".processEditor";
  52
  53         private Repository repository;
  54         private Session session;
  55         private Node processNode;
  56         private ProcessController processController;
  57
  58         private ProcessBuilderPage builderPage;
  59
  60         private ExecutionModulesManager modulesManager;
  61
  62         @Override
  63         public void init(IEditorSite site, IEditorInput input)
  64                         throws PartInitException {
  65                 super.init(site, input);
  66                 try {
  67                         session = repository.login();
  68                 } catch (RepositoryException e1) {
  69                         throw new SlcException("Cannot log in to repository");
  70                 }
  71
  72                 ProcessEditorInput pei = (ProcessEditorInput) input;
  73                 String processPath = pei.getProcessPath();
  74                 try {
  75                         if (processPath != null) {
  76                                 if (!session.itemExists(processPath))
  77                                         throw new SlcException("Process " + processPath
  78                                                         + " does not exist");
  79                                 processNode = session.getNode(processPath);
  80                         } else {// new
  81                                 processNode = newProcessNode(pei);
  82                         }
  83                         setPartName(processNode.getName());
  84                 } catch (RepositoryException e) {
  85                         throw new SlcException("Cannot initialize editor for " + pei, e);
  86                 }
  87
  88         }
  89
  90         protected Node newProcessNode(ProcessEditorInput pei)
  91                         throws RepositoryException {
  92                 String uuid = UUID.randomUUID().toString();
  93                 String processPath = SlcJcrUtils.createExecutionProcessPath(session,
  94                                 uuid);
  95                 Node processNode = JcrUtils.mkdirs(session, processPath, SLC_PROCESS);
  96                 processNode.setProperty(SLC_UUID, uuid);
  97                 processNode.setProperty(SLC_STATUS, ExecutionProcess.NEW);
  98                 Node processFlow = processNode.addNode(SLC_FLOW);
  99                 processFlow.addMixin(SLC_REALIZED_FLOW);
 100                 return processNode;
 101         }
 102
 103         @Override
 104         public boolean isDirty() {
 105                 if (getProcessStatus().equals(ExecutionProcess.NEW))
 106                         return true;
 107                 return super.isDirty();
 108         }
 109
 110         protected String getProcessStatus() {
 111                 try {
 112                         return processNode.getProperty(SLC_STATUS).getString();
 113                 } catch (RepositoryException e) {
 114                         throw new SlcException("Cannot retrieve status for " + processNode,
 115                                         e);
 116                 }
 117         }
 118
 119         @Override
 120         public void dispose() {
 121                 JcrUtils.logoutQuietly(session);
 122                 super.dispose();
 123         }
 124
 125         /** Actually runs the process. */
 126         void process() {
 127                 // the modifications have to be saved before execution
 128                 try {
 129                         processNode.setProperty(SLC_STATUS, ExecutionProcess.SCHEDULED);
 130                 } catch (RepositoryException e) {
 131                         throw new SlcException("Cannot update status of " + processNode, e);
 132                 }
 133
 134                 // save
 135                 doSave(null);
 136
 137                 try {
 138                         // make sure modules are started for all nodes
 139                         for (NodeIterator nit = processNode.getNode(SLC_FLOW).getNodes(); nit
 140                                         .hasNext();) {
 141                                 Node flowNode = nit.nextNode();
 142                                 try {
 143                                         String flowDefPath = flowNode.getNode(SLC_ADDRESS)
 144                                                         .getProperty(Property.JCR_PATH).getString();
 145                                         Node executionModuleNode = flowNode.getSession().getNode(
 146                                                         SlcJcrUtils.modulePath(flowDefPath));
 147                                         if (!executionModuleNode.getProperty(SLC_STARTED)
 148                                                         .getBoolean())
 149                                                 ClientUiPlugin.startStopExecutionModule(modulesManager,
 150                                                                 executionModuleNode);
 151                                 } catch (Exception e) {
 152                                         ErrorFeedback.show(
 153                                                         "Cannot start execution module related to "
 154                                                                         + flowNode, e);
 155                                 }
 156                         }
 157
 158                         // Actually process
 159                         ExecutionProcess process = processController.process(processNode);
 160                         Map<String, String> properties = new HashMap<String, String>();
 161                         properties.put(ExecutionModulesManager.SLC_PROCESS_ID,
 162                                         process.getUuid());
 163                         // modulesManager.registerProcessNotifier(this, properties);
 164                 } catch (Exception e) {
 165                         ErrorFeedback.show("Execution of " + processNode + " failed", e);
 166                 }
 167         }
 168
 169         void kill() {
 170                 processController.kill(processNode);
 171         }
 172
 173         /** Opens a new editor with a copy of this process */
 174         void relaunch() {
 175                 try {
 176                         Node duplicatedNode = duplicateProcess();
 177                         IWorkbenchPage activePage = PlatformUI.getWorkbench()
 178                                         .getActiveWorkbenchWindow().getActivePage();
 179                         activePage.openEditor(
 180                                         new ProcessEditorInput(duplicatedNode.getPath()),
 181                                         ProcessEditor.ID);
 182                         close(false);
 183                 } catch (Exception e1) {
 184                         throw new SlcException("Cannot relaunch " + processNode, e1);
 185                 }
 186         }
 187
 188         /** Duplicates the process */
 189         protected Node duplicateProcess() {
 190                 try {
 191                         Session session = processNode.getSession();
 192                         String uuid = UUID.randomUUID().toString();
 193                         String destPath = SlcJcrUtils.createExecutionProcessPath(session,
 194                                         uuid);
 195                         Node newNode = JcrUtils.mkdirs(session, destPath,
 196                                         SlcTypes.SLC_PROCESS);
 197
 198                         Node rootRealizedFlowNode = newNode.addNode(SLC_FLOW);
 199                         // copy node
 200                         JcrUtils.copy(processNode.getNode(SLC_FLOW), rootRealizedFlowNode);
 201
 202                         newNode.setProperty(SLC_UUID, uuid);
 203                         newNode.setProperty(SLC_STATUS, ExecutionProcess.INITIALIZED);
 204
 205                         // reset realized flow status
 206                         // we just manage one level for the time being
 207                         NodeIterator nit = rootRealizedFlowNode.getNodes(SLC_FLOW);
 208                         while (nit.hasNext()) {
 209                                 nit.nextNode().setProperty(SLC_STATUS,
 210                                                 ExecutionProcess.INITIALIZED);
 211                         }
 212
 213                         session.save();
 214                         return newNode;
 215                 } catch (RepositoryException e) {
 216                         throw new SlcException("Cannot duplicate process", e);
 217                 }
 218         }
 219
 220         @Override
 221         protected void addPages() {
 222                 try {
 223                         builderPage = new ProcessBuilderPage(this, processNode);
 224                         addPage(builderPage);
 225                         firePropertyChange(PROP_DIRTY);
 226                 } catch (PartInitException e) {
 227                         throw new SlcException("Cannot add pages", e);
 228                 }
 229
 230         }
 231
 232         @Override
 233         public void doSave(IProgressMonitor monitor) {
 234                 try {
 235                         String status = processNode.getProperty(SLC_STATUS).getString();
 236                         if (status.equals(ExecutionProcess.NEW))
 237                                 processNode.setProperty(SLC_STATUS,
 238                                                 ExecutionProcess.INITIALIZED);
 239                         session.save();
 240                         builderPage.commit(true);
 241                         editorDirtyStateChanged();
 242                 } catch (RepositoryException e) {
 243                         throw new SlcException("Cannot save " + processNode, e);
 244                         // } finally {
 245                         // JcrUtils.discardQuietly(session);
 246                 }
 247         }
 248
 249         public void setEditorTitle(String title) {
 250                 setPartName(title);
 251         }
 252
 253         @Override
 254         public void doSaveAs() {
 255         }
 256
 257         @Override
 258         public boolean isSaveAsAllowed() {
 259                 return false;
 260         }
 261
 262         public void setRepository(Repository repository) {
 263                 this.repository = repository;
 264         }
 265
 266         public void setProcessController(ProcessController processController) {
 267                 this.processController = processController;
 268         }
 269
 270         public void setModulesManager(ExecutionModulesManager modulesManager) {
 271                 this.modulesManager = modulesManager;
 272         }
 273 }