1 /*******************************************************************************
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2 * Copyright (c) 2012 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * Semantum Oy - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics;
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14 import org.eclipse.core.runtime.IProgressMonitor;
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15 import org.eclipse.core.runtime.IStatus;
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16 import org.eclipse.core.runtime.Status;
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17 import org.eclipse.core.runtime.jobs.Job;
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18 import org.eclipse.core.runtime.preferences.DefaultScope;
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19 import org.eclipse.core.runtime.preferences.InstanceScope;
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20 import org.osgi.service.prefs.Preferences;
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21 import org.simantics.db.ReadGraph;
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22 import org.simantics.db.Session;
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23 import org.simantics.db.common.request.ReadRequest;
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24 import org.simantics.db.exception.DatabaseException;
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25 import org.simantics.db.service.LifecycleSupport;
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26 import org.simantics.db.service.VirtualGraphSupport;
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27 import org.simantics.internal.Activator;
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30 * @author Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
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32 public class AutosaveVirtualGraphs extends Job {
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34 private static final boolean TRACE = false;
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36 private boolean enabled = true;
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38 private Preferences defaultPrefs = DefaultScope.INSTANCE.getNode(AutosavePreferences.P_NODE);
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39 private Preferences prefs = InstanceScope.INSTANCE.getNode(AutosavePreferences.P_NODE);
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41 private static AutosaveVirtualGraphs INSTANCE;
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43 private boolean getBooleanPref(String preference, boolean def) {
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44 return prefs.getBoolean(preference, defaultPrefs.getBoolean(preference, def));
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47 private int getIntPref(String preference, int def) {
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48 return prefs.getInt(preference, defaultPrefs.getInt(preference, def));
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51 private AutosaveVirtualGraphs() {
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52 super("Autosave Virtual Graphs");
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54 setPriority(Job.LONG);
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57 public static synchronized AutosaveVirtualGraphs getInstance() {
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58 if(INSTANCE == null) {
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59 INSTANCE = new AutosaveVirtualGraphs();
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68 public boolean isEnabled() {
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73 * @param enabled new enabled state
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74 * @return previous enabled state
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76 public boolean setEnabled(boolean enabled) {
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77 if (enabled == this.enabled)
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79 this.enabled = enabled;
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81 scheduleAfterInterval();
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87 public AutosaveVirtualGraphs scheduleAfterInterval() {
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88 // Check global disable first.
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89 String enabled = System.getProperty(AutosavePreferences.SYSTEM_PROPERTY_AUTOSAVE);
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90 if (enabled != null && enabled.equalsIgnoreCase(Boolean.FALSE.toString())) {
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94 // Then check preference.
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95 if (!getBooleanPref(AutosavePreferences.P_VG_AUTOSAVE_ENABLED, AutosavePreferences.DEFAULT_VG_AUTOSAVE_ENABLED))
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99 int interval = getIntPref(AutosavePreferences.P_VG_AUTOSAVE_INTERVAL, AutosavePreferences.DEFAULT_VG_AUTOSAVE_INTERVAL);
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100 schedule(interval*1000L);
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105 public boolean shouldSchedule() {
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110 public boolean shouldRun() {
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114 protected IStatus runHeadless(IProgressMonitor monitor) {
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116 Session session = Simantics.peekSession();
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117 if (session == null)
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118 return Status.CANCEL_STATUS;
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119 LifecycleSupport lfs = session.peekService(LifecycleSupport.class);
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120 if (lfs == null || lfs.isClosed() || lfs.isClosing())
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121 return Status.CANCEL_STATUS;
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124 monitor.beginTask("Autosaving virtual graphs...", IProgressMonitor.UNKNOWN);
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126 System.out.println("Autosaving virtual graphs...");
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127 long startTime = System.nanoTime();
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129 session.syncRequest(new ReadRequest() {
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131 public void run(ReadGraph graph) throws DatabaseException {
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137 long endTime = System.nanoTime();
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138 System.out.println("Autosave of virtual graphs completed in " + (endTime-startTime)*1e-6 + " ms");
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141 return Status.OK_STATUS;
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142 } catch (DatabaseException e) {
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143 return new Status(Status.ERROR, Activator.PLUGIN_ID, "Autosaving virtual graphs failed", e);
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149 protected IStatus run(IProgressMonitor monitor) {
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150 if (!getBooleanPref(AutosavePreferences.P_VG_AUTOSAVE_ENABLED, AutosavePreferences.DEFAULT_VG_AUTOSAVE_ENABLED))
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151 return Status.OK_STATUS;
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152 int interval = getIntPref(AutosavePreferences.P_VG_AUTOSAVE_INTERVAL, AutosavePreferences.DEFAULT_VG_AUTOSAVE_INTERVAL);
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154 // Never run while a heavy database job is in progress.
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155 if (DatabaseJob.inProgress()) {
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156 // Schedule again in at most 10 seconds instead of
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157 // waiting for the whole autosave period again.
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158 interval = Math.min(10, interval);
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159 return Status.OK_STATUS;
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162 // if(PlatformUI.isWorkbenchRunning()) {
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163 // return runInWorkbench(monitor);
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165 return runHeadless(monitor);
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168 schedule(interval*1000L);
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172 public static void doSave(ReadGraph graph) throws DatabaseException {
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173 VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
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177 public static void saveVirtualGraphsPeriodically() {
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178 getInstance().scheduleAfterInterval();
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