org.eclipse.linuxtools.lttng.core/src/org/eclipse/linuxtools/lttng/core/state/experiment/StateManagerFactory.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2010 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Alvaro Sanchez-Leon (alvsan09@gmail.com) - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.lttng.core.state.experiment;
  14
  15 import org.eclipse.linuxtools.lttng.core.TraceDebug;
  16 import org.eclipse.linuxtools.lttng.core.model.LTTngTreeNode;
  17 import org.eclipse.linuxtools.lttng.core.state.LttngStateException;
  18 import org.eclipse.linuxtools.lttng.core.state.trace.IStateTraceManager;
  19 import org.eclipse.linuxtools.lttng.core.state.trace.StateTraceManager;
  20 import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment;
  21 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  22
  23 /**
  24  * @author alvaro
  25  *
  26  */
  27 public class StateManagerFactory {
  28     // ========================================================================
  29     // Data
  30     // =======================================================================
  31
  32     private static IStateExperimentManager experimentManager = null;
  33     /**
  34      * Allows to modify the check point interval for every new instance of trace manager
  35      */
  36     private static Long ftraceCheckPointInterval = null;
  37
  38     static {
  39         initCheck();
  40     }
  41
  42     // ========================================================================
  43     // Methods
  44     // =======================================================================
  45
  46     /**
  47      * @param traceUniqueId
  48      * @param experiment
  49      * @return
  50      */
  51     public static LTTngTreeNode getManager(ITmfTrace rtrace, LTTngTreeNode experiment) {
  52
  53         // Validate
  54         if (rtrace == null) {
  55             return null;
  56         }
  57
  58         String traceUniqueId = rtrace.getName();
  59         if (traceUniqueId == null) {
  60             return null;
  61         }
  62
  63         LTTngTreeNode managerNode = null;
  64         managerNode = experiment.getChildByName(traceUniqueId);
  65
  66         if (managerNode != null && managerNode instanceof IStateTraceManager) {
  67             return managerNode;
  68         }
  69
  70 //              LttngTraceState traceModel =
  71 //              StateModelFactory.getStateEntryInstance();
  72         StateTraceManager manager = null;
  73
  74         // catch potential construction problems
  75         try {
  76             manager = new StateTraceManager(experiment.getNextUniqueId(), experiment, traceUniqueId, rtrace);
  77
  78             // Allow the possibility to configure the trace state check point
  79             // interval at creation time
  80             if (ftraceCheckPointInterval != null) {
  81                 manager.setCheckPointInterval(ftraceCheckPointInterval);
  82             }
  83
  84         } catch (LttngStateException e) {
  85             e.printStackTrace();
  86         }
  87
  88         experiment.addChild(manager);
  89         return manager;
  90     }
  91
  92     /**
  93      * Provide the State trace set manager
  94      *
  95      * @return
  96      */
  97     public static IStateExperimentManager getExperimentManager() {
  98         return experimentManager;
  99     }
 100
 101     /**
 102      * Remove previously registered managers
 103      *
 104      * @param traceUniqueId
 105      */
 106     public static void removeManager(ITmfTrace rtrace, LTTngTreeNode rexperiment) {
 107         if (rtrace != null && rexperiment != null && rexperiment.getValue() instanceof TmfExperiment<?>) {
 108             LTTngTreeNode childToremove = rexperiment.getChildByName(rtrace.getName());
 109             if (childToremove != null) {
 110                 rexperiment.removeChild(childToremove);
 111             }
 112         } else {
 113             TraceDebug.debug("Invalid arguments to remove manager for trace: " //$NON-NLS-1$
 114                     + rtrace.getName());
 115         }
 116     }
 117
 118     /**
 119      * initialization of factory
 120      */
 121     private static void initCheck() {
 122         if (experimentManager == null) {
 123             Long id = 0L; // unique id
 124             String name = "StateExperimentManager"; // name //$NON-NLS-1$
 125             experimentManager = new StateExperimentManager(id, name);
 126         }
 127     }
 128
 129     /**
 130      * Clea up resources
 131      */
 132     public static void dispose() {
 133         if (experimentManager != null) {
 134             experimentManager = null;
 135         }
 136     }
 137
 138     /**
 139      * @return the traceCheckPointInterval
 140      */
 141     public static Long getTraceCheckPointInterval() {
 142         return ftraceCheckPointInterval;
 143     }
 144
 145     /**
 146      * @param traceCheckPointInterval
 147      *            the traceCheckPointInterval to set
 148      */
 149     public static void setTraceCheckPointInterval(Long traceCheckPointInterval) {
 150         StateManagerFactory.ftraceCheckPointInterval = traceCheckPointInterval;
 151     }
 152 }