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From s...@apache.org
Subject svn commit: r1719992 - in /jmeter/branches/SampleTimeout: bin/ src/components/org/apache/jmeter/modifiers/ src/components/org/apache/jmeter/modifiers/gui/ src/components/org/apache/jmeter/timers/ src/components/org/apache/jmeter/timers/gui/ src/core/or...
Date Mon, 14 Dec 2015 19:32:38 GMT
Author: sebb
Date: Mon Dec 14 19:32:38 2015
New Revision: 1719992

URL: http://svn.apache.org/viewvc?rev=1719992&view=rev
Log:
Use Pre-Processor rather than Timer

Added:
    jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/SampleTimeout.java
  (with props)
    jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/gui/SampleTimeoutGui.java
  (with props)
    jmeter/branches/SampleTimeout/xdocs/images/screenshots/sample_timeout.png   (with props)
Removed:
    jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/timers/InterruptTimer.java
    jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/timers/gui/InterruptTimerGui.java
    jmeter/branches/SampleTimeout/xdocs/images/screenshots/timers/interrupt_timer.png
Modified:
    jmeter/branches/SampleTimeout/bin/saveservice.properties
    jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages.properties
    jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages_fr.properties
    jmeter/branches/SampleTimeout/xdocs/usermanual/component_reference.xml

Modified: jmeter/branches/SampleTimeout/bin/saveservice.properties
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/bin/saveservice.properties?rev=1719992&r1=1719991&r2=1719992&view=diff
==============================================================================
--- jmeter/branches/SampleTimeout/bin/saveservice.properties (original)
+++ jmeter/branches/SampleTimeout/bin/saveservice.properties Mon Dec 14 19:32:38 2015
@@ -165,8 +165,6 @@ IncludeController=org.apache.jmeter.cont
 IncludeControllerGui=org.apache.jmeter.control.gui.IncludeControllerGui
 InterleaveControl=org.apache.jmeter.control.InterleaveControl
 InterleaveControlGui=org.apache.jmeter.control.gui.InterleaveControlGui
-InterruptTimer=org.apache.jmeter.timers.InterruptTimer
-InterruptTimerGui=org.apache.jmeter.timers.gui.InterruptTimerGui
 JavaConfig=org.apache.jmeter.protocol.java.config.JavaConfig
 JavaConfigGui=org.apache.jmeter.protocol.java.config.gui.JavaConfigGui
 JavaSampler=org.apache.jmeter.protocol.java.sampler.JavaSampler
@@ -261,6 +259,8 @@ ResultSaverGui=org.apache.jmeter.reporte
 RunTime=org.apache.jmeter.control.RunTime
 RunTimeGui=org.apache.jmeter.control.gui.RunTimeGui
 SampleSaveConfiguration=org.apache.jmeter.samplers.SampleSaveConfiguration
+SampleTimeout=org.apache.jmeter.modifiers.SampleTimeout
+SampleTimeoutGui=org.apache.jmeter.modifiers.gui.SampleTimeoutGui
 SimpleConfigGui=org.apache.jmeter.config.gui.SimpleConfigGui
 SimpleDataWriter=org.apache.jmeter.visualizers.SimpleDataWriter
 SizeAssertion=org.apache.jmeter.assertions.SizeAssertion

Added: jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/SampleTimeout.java
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/SampleTimeout.java?rev=1719992&view=auto
==============================================================================
--- jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/SampleTimeout.java
(added)
+++ jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/SampleTimeout.java
Mon Dec 14 19:32:38 2015
@@ -0,0 +1,230 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.jmeter.modifiers;
+
+import java.io.Serializable;
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.jmeter.samplers.Interruptible;
+import org.apache.jmeter.samplers.SampleEvent;
+import org.apache.jmeter.samplers.SampleListener;
+import org.apache.jmeter.samplers.Sampler;
+import org.apache.jmeter.testelement.AbstractTestElement;
+import org.apache.jmeter.testelement.TestElement;
+import org.apache.jmeter.testelement.ThreadListener;
+import org.apache.jmeter.threads.JMeterContext;
+import org.apache.jmeter.threads.JMeterContextService;
+import org.apache.jmeter.util.JMeterUtils;
+import org.apache.jorphan.logging.LoggingManager;
+import org.apache.log.Logger;
+
+/**
+ * 
+ * Sample timeout implementation using Executor threads
+ *
+ */
+public class SampleTimeout extends AbstractTestElement implements Serializable, ThreadListener,
SampleListener {
+
+    private static final long serialVersionUID = 1L;
+
+    private static final Logger LOG = LoggingManager.getLoggerForClass();
+
+    private static final String TIMEOUT = "InterruptTimer.timeout"; //$NON-NLS-1$
+
+    private final boolean useRunnable = JMeterUtils.getPropDefault("InterruptTimer.useRunnable",
false);
+
+    private static class TPOOLHolder {
+        static final ScheduledExecutorService EXEC_SERVICE =
+                Executors.newScheduledThreadPool(1,
+                        new ThreadFactory() {
+                            public Thread newThread(Runnable r) {
+                                Thread t = Executors.defaultThreadFactory().newThread(r);
+                                t.setDaemon(true); // also ensures that Executor thread is
daemon
+                                return t;
+                            }
+                        });
+    }
+
+    private static ScheduledExecutorService getExecutorService() {
+        return TPOOLHolder.EXEC_SERVICE;
+    }
+
+    private JMeterContext context; // Cache this here to avoid refetching
+
+    private ScheduledFuture<?> future;
+    
+    private final transient ScheduledExecutorService execService;
+    
+    private final boolean debug;
+
+    /**
+     * No-arg constructor.
+     */
+    public SampleTimeout() {
+//        LOG.setPriority(org.apache.log.Priority.DEBUG); // for local debugging when enabled
+        debug = LOG.isDebugEnabled();
+        execService = getExecutorService();
+        if (debug) {
+            LOG.debug(whoAmI("InterruptTimer()", this));
+        }
+    }
+
+    /**
+     * Set the timeout for this timer.
+     * @param timeout The timeout for this timer
+     */
+    public void setTimeout(String timeout) {
+        setProperty(TIMEOUT, timeout);
+    }
+
+    /**
+     * Get the timeout value for display.
+     *
+     * @return the timeout value for display.
+     */
+    public String getTimeout() {
+        return getPropertyAsString(TIMEOUT);
+    }
+
+    @Override
+    public void sampleStarted(SampleEvent e) {
+        if (debug) {
+            LOG.debug(whoAmI("sampleStarted()", this));
+        }
+        createTask();
+    }
+
+    @Override
+    public void sampleStopped(SampleEvent e) {
+        if (debug) {
+            LOG.debug(whoAmI("sampleStopped()", this));
+        }
+        cancelTask();
+    }
+
+    private void createTask() {
+        long timeout = getPropertyAsLong(TIMEOUT); // refetch each time so it can be a variable
+        if (timeout <= 0) {
+            return;
+        }
+        final Sampler samp = context.getCurrentSampler();
+        if (!(samp instanceof Interruptible)) { // may be applied to a whole test 
+            return; // Cannot time out in this case
+        }
+        final Interruptible sampler = (Interruptible) samp;
+        
+        if (useRunnable) {
+            Runnable run=new Runnable() {
+                public void run() {
+                    long start = System.nanoTime();
+                    boolean interrupted = sampler.interrupt();
+                    String elapsed = Double.toString((double)(System.nanoTime()-start)/ 1000000000)+"
secs";
+                    if (interrupted) {
+                        LOG.warn("Run Done interrupting " + getInfo(samp) + " took " + elapsed);
+                    } else {
+                        if (debug) {
+                            LOG.debug("Run Didn't interrupt: " + getInfo(samp) + " took "
+ elapsed);
+                        }
+                    }
+                }
+            };
+            // schedule the interrupt to occur and save for possible cancellation 
+            future = execService.schedule(run, timeout, TimeUnit.MILLISECONDS);
+        } else {
+            Callable<Object> call = new Callable<Object>() {
+                @Override
+                public Object call() throws Exception {
+                    long start = System.nanoTime();
+                    boolean interrupted = sampler.interrupt();
+                    String elapsed = Double.toString((double)(System.nanoTime()-start)/ 1000000000)+"
secs";
+                    if (interrupted) {
+                        LOG.warn("Call Done interrupting " + getInfo(samp) + " took " + elapsed);
+                    } else {
+                        if (debug) {
+                            LOG.debug("Call Didn't interrupt: " + getInfo(samp) + " took
" + elapsed);
+                        }
+                    }
+                    return null;
+                }
+                
+            };
+            // schedule the interrupt to occur and save for possible cancellation 
+            future = execService.schedule(call, timeout, TimeUnit.MILLISECONDS);
+        }
+        if (debug) {
+            LOG.debug("Scheduled timer: @" + System.identityHashCode(future) + " " + getInfo(samp));
+        }
+    }
+
+    @Override
+    public void threadStarted() {
+        if (debug) {
+            LOG.debug(whoAmI("threadStarted()", this));
+        }
+        context = JMeterContextService.getContext();
+     }
+
+    @Override
+    public void threadFinished() {
+        if (debug) {
+            LOG.debug(whoAmI("threadFinished()", this));
+        }
+        cancelTask(); // cancel final if any
+     }
+
+    /**
+     * Provide a description of this class.
+     *
+     * @return the description of this class.
+     */
+    @Override
+    public String toString() {
+        return JMeterUtils.getResString("sample_timeout_memo"); //$NON-NLS-1$
+    }
+
+    private String whoAmI(String id, TestElement o) {
+        return id + " @" + System.identityHashCode(o)+ " '"+ o.getName() + "' " + (debug
?  Thread.currentThread().getName() : "");         
+    }
+
+    private String getInfo(TestElement o) {
+        return whoAmI(o.getClass().getSimpleName(), o); 
+    }
+
+    private void cancelTask() {
+        if (future != null) {
+            if (!future.isDone()) {
+                boolean cancelled = future.cancel(false);
+                if (debug) {
+                    LOG.debug("Cancelled timer: @" + System.identityHashCode(future) + "
with result " + cancelled);
+                }
+            }
+            future = null;
+        }        
+    }
+
+    @Override
+    public void sampleOccurred(SampleEvent e) {
+        // Not used
+    }
+}

Propchange: jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/SampleTimeout.java
------------------------------------------------------------------------------
    svn:eol-style = native

Added: jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/gui/SampleTimeoutGui.java
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/gui/SampleTimeoutGui.java?rev=1719992&view=auto
==============================================================================
--- jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/gui/SampleTimeoutGui.java
(added)
+++ jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/gui/SampleTimeoutGui.java
Mon Dec 14 19:32:38 2015
@@ -0,0 +1,133 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.jmeter.modifiers.gui;
+
+import javax.swing.Box;
+import javax.swing.JComponent;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JTextField;
+
+import org.apache.jmeter.modifiers.SampleTimeout;
+import org.apache.jmeter.processor.gui.AbstractPreProcessorGui;
+import org.apache.jmeter.testelement.TestElement;
+import org.apache.jmeter.util.JMeterUtils;
+import org.apache.jorphan.gui.layout.VerticalLayout;
+
+/**
+ * The GUI for SampleTimeout.
+ */
+public class SampleTimeoutGui extends AbstractPreProcessorGui {
+
+    private static final long serialVersionUID = 240L;
+
+    /**
+     * The default value for the timeout.
+     */
+    private static final String DEFAULT_TIMEOUT = "10000";
+
+    private JTextField timeoutField;
+
+    /**
+     * No-arg constructor.
+     */
+    public SampleTimeoutGui() {
+        init();
+    }
+
+    /**
+     * Handle an error.
+     *
+     * @param e
+     *            the Exception that was thrown.
+     * @param thrower
+     *            the JComponent that threw the Exception.
+     */
+    public static void error(Exception e, JComponent thrower) {
+        JOptionPane.showMessageDialog(thrower, e, "Error", JOptionPane.ERROR_MESSAGE);
+    }
+
+    @Override
+    public String getLabelResource() {
+        return "sample_timeout_title"; // $NON-NLS-1$
+    }
+
+    /**
+     * Create the test element underlying this GUI component.
+     *
+     * @see org.apache.jmeter.gui.JMeterGUIComponent#createTestElement()
+     */
+    @Override
+    public TestElement createTestElement() {
+        SampleTimeout timer = new SampleTimeout();
+        modifyTestElement(timer);
+        return timer;
+    }
+
+    /**
+     * Modifies a given TestElement to mirror the data in the gui components.
+     *
+     * @see org.apache.jmeter.gui.JMeterGUIComponent#modifyTestElement(TestElement)
+     */
+    @Override
+    public void modifyTestElement(TestElement timer) {
+        this.configureTestElement(timer);
+        ((SampleTimeout) timer).setTimeout(timeoutField.getText());
+    }
+
+    /**
+     * Configure this GUI component from the underlying TestElement.
+     *
+     * @see org.apache.jmeter.gui.JMeterGUIComponent#configure(TestElement)
+     */
+    @Override
+    public void configure(TestElement el) {
+        super.configure(el);
+        timeoutField.setText(((SampleTimeout) el).getTimeout());
+    }
+
+    /**
+     * Initialize this component.
+     */
+    private void init() {
+        setLayout(new VerticalLayout(5, VerticalLayout.BOTH, VerticalLayout.TOP));
+
+        setBorder(makeBorder());
+        add(makeTitlePanel());
+
+        Box timeoutPanel = Box.createHorizontalBox();
+        JLabel timeoutLabel = new JLabel(JMeterUtils.getResString("sample_timeout_timeout"));//$NON-NLS-1$
+        timeoutPanel.add(timeoutLabel);
+
+        timeoutField = new JTextField(6);
+        timeoutField.setText(DEFAULT_TIMEOUT);
+        timeoutPanel.add(timeoutField);
+
+        add(timeoutPanel);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void clearGui() {
+        timeoutField.setText(DEFAULT_TIMEOUT);
+        super.clearGui();
+    }
+}

Propchange: jmeter/branches/SampleTimeout/src/components/org/apache/jmeter/modifiers/gui/SampleTimeoutGui.java
------------------------------------------------------------------------------
    svn:eol-style = native

Modified: jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages.properties
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages.properties?rev=1719992&r1=1719991&r2=1719992&view=diff
==============================================================================
--- jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages.properties
(original)
+++ jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages.properties
Mon Dec 14 19:32:38 2015
@@ -423,9 +423,6 @@ insert_after=Insert After
 insert_before=Insert Before
 insert_parent=Insert Parent
 interleave_control_title=Interleave Controller
-interrupt_timer_memo=Interrupt the sampler if it times out
-interrupt_timer_timeout=Sampler timeout (in milliseconds)\:
-interrupt_timer_title=Interrupt Timer
 intsum_param_1=First int to add.
 intsum_param_2=Second int to add - further ints can be summed by adding further arguments.
 invalid_data=Invalid data
@@ -887,6 +884,9 @@ sampler_on_error_start_next_loop=Start N
 sampler_on_error_stop_test=Stop Test
 sampler_on_error_stop_test_now=Stop Test Now
 sampler_on_error_stop_thread=Stop Thread
+sample_timeout_memo=Interrupt the sampler if it times out
+sample_timeout_timeout=Sample timeout (in milliseconds)\:
+sample_timeout_title=Sample Timeout
 save=Save
 save?=Save?
 save_all_as=Save Test Plan as

Modified: jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages_fr.properties
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages_fr.properties?rev=1719992&r1=1719991&r2=1719992&view=diff
==============================================================================
--- jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages_fr.properties
(original)
+++ jmeter/branches/SampleTimeout/src/core/org/apache/jmeter/resources/messages_fr.properties
Mon Dec 14 19:32:38 2015
@@ -416,9 +416,6 @@ insert_after=Ins\u00E9rer apr\u00E8s
 insert_before=Ins\u00E9rer avant
 insert_parent=Ins\u00E9rer en tant que parent
 interleave_control_title=Contr\u00F4leur Interleave
-interrupt_timer_memo=Interrompre l'\u00E9chantillon si le d\u00E9lai est d\u00E9pass\u00E9
-interrupt_timer_timeout=D\u00E9lai d'attente avant interruption (en millisecondes) \: 
-interrupt_timer_title=Compteur Interruption
 intsum_param_1=Premier entier \u00E0 ajouter
 intsum_param_2=Deuxi\u00E8me entier \u00E0 ajouter - les entier(s) suivants peuvent \u00EAtre
ajout\u00E9(s) avec les arguments suivants.
 invalid_data=Donn\u00E9e invalide
@@ -866,6 +863,9 @@ sample_scope_children=Les ressources li\
 sample_scope_parent=L'\u00E9chantillon
 sample_scope_variable=Une variable \:
 sampler_label=Libell\u00E9
+sample_timeout_memo=Interrompre l'\u00E9chantillon si le d\u00E9lai est d\u00E9pass\u00E9
+sample_timeout_timeout=D\u00E9lai d'attente avant interruption (en millisecondes) \: 
+sample_timeout_title=Compteur Interruption
 sampler_on_error_action=Action \u00E0 suivre apr\u00E8s une erreur d'\u00E9chantillon
 sampler_on_error_continue=Continuer
 sampler_on_error_start_next_loop=D\u00E9marrer it\u00E9ration suivante

Added: jmeter/branches/SampleTimeout/xdocs/images/screenshots/sample_timeout.png
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/xdocs/images/screenshots/sample_timeout.png?rev=1719992&view=auto
==============================================================================
Binary file - no diff available.

Propchange: jmeter/branches/SampleTimeout/xdocs/images/screenshots/sample_timeout.png
------------------------------------------------------------------------------
    svn:mime-type = image/png

Modified: jmeter/branches/SampleTimeout/xdocs/usermanual/component_reference.xml
URL: http://svn.apache.org/viewvc/jmeter/branches/SampleTimeout/xdocs/usermanual/component_reference.xml?rev=1719992&r1=1719991&r2=1719992&view=diff
==============================================================================
--- jmeter/branches/SampleTimeout/xdocs/usermanual/component_reference.xml (original)
+++ jmeter/branches/SampleTimeout/xdocs/usermanual/component_reference.xml Mon Dec 14 19:32:38
2015
@@ -5236,23 +5236,6 @@ to the random delay.</property>
 
 </component>
 
-<component name="Interrupt Timer" index="&sect-num;.6.1" anchor="interrupt" width="336"
height="148" screenshot="timers/interrupt_timer.png">
-<description>
-<p>This is not strictly a timer, as it does not cause a delay before a sampler.
-Instead it interrupts the sampler if that has taken longer than the timeout.
-The timeout is ignored if it is zero or negative.
-For this to work, the sampler must implement Interruptible. 
-The following samplers are known to do so:<br></br>
-AJP, BeanShell, FTP, HTTP, Soap, AccessLog, MailReader, JMS Subscriber, TCPSampler, TestAction
-</p></description>
-
-<properties>
-        <property name="Name" required="No">Descriptive name for this timer that is
shown in the tree.</property>
-        <property name="Sampler Timeout" required="Yes">If the sampler takes longer
to complete, it will be interrupted.</property>
-</properties>
-</component>
-
-
 <a href="#">^</a>
 
 </section>
@@ -5587,6 +5570,36 @@ this one will be used by "Calculate Pric
         <link href="../demos/RegEx-User-Parameters.jmx">Test Plan showing how to use
RegEx User Parameters</link>
 </links>
 
+<component name="Sample Timeout" index="&sect-num;.7.11" anchor="interrupt" width="316"
height="138" screenshot="sample_timeout.png">
+<description>
+<note>BETA CODE - the test element may be moved or replaced in a future release</note>
+<p>This Pre-Processor schedules a timer task to interrupt a sample if it takes too
long to complete.
+The timeout is ignored if it is zero or negative.
+For this to work, the sampler must implement Interruptible. 
+The following samplers are known to do so:<br></br>
+AJP, BeanShell, FTP, HTTP, Soap, AccessLog, MailReader, JMS Subscriber, TCPSampler, TestAction,
JavaSampler
+</p>
+<p>
+The test element is intended for use where individual timeouts such as Connection Timeout
or Response Timeout are insufficient,
+or where the Sampler does not support timeouts.
+The timeout should be set sufficiently long so that it is not triggered in normal tests,
but short enough that it interrupts samples
+that are stuck.
+</p>
+<p>
+[By default, JMeter uses a Callable to interrupt the sampler.
+This executes in the same thread as the timer, so if the interrupt takes a long while, 
+it may delay the processing of subsequent timeouts.
+This is not expected to be a problem, but if necessary the property <code>InterruptTimer.useRunnable</code>
+can be set to <code>true</code> to use a separate Runnable thread instead of
the Callable.]
+</p>
+</description>
+
+<properties>
+        <property name="Name" required="No">Descriptive name for this timer that is
shown in the tree.</property>
+        <property name="Sampler Timeout" required="Yes">If the sample takes longer
to complete, it will be interrupted.</property>
+</properties>
+</component>
+
 <a href="#">^</a>
 
 </section>



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