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| <div class="subTitle">org.apache.jmeter.visualizers.backend</div> |
| <h2 title="Interface BackendListenerClient" class="title">Interface BackendListenerClient</h2> |
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| <div class="description"> |
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| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../org/apache/jmeter/visualizers/backend/AbstractBackendListenerClient.html" title="class in org.apache.jmeter.visualizers.backend">AbstractBackendListenerClient</a>, <a href="../../../../../org/apache/jmeter/visualizers/backend/graphite/GraphiteBackendListenerClient.html" title="class in org.apache.jmeter.visualizers.backend.graphite">GraphiteBackendListenerClient</a>, <a href="../../../../../org/apache/jmeter/visualizers/backend/influxdb/InfluxdbBackendListenerClient.html" title="class in org.apache.jmeter.visualizers.backend.influxdb">InfluxdbBackendListenerClient</a></dd> |
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| <br> |
| <pre>public interface <span class="typeNameLabel">BackendListenerClient</span></pre> |
| <div class="block">This interface defines the interactions between the BackendListener and external |
| Java programs which can be executed by JMeter. Any Java class which wants to |
| be executed using the BackendListener test element must implement this interface (either directly |
| or preferably indirectly through AbstractBackendListenerClient). |
| <p> |
| JMeter will create one instance of a BackendListenerClient implementation for |
| each user/thread in the test. Additional instances may be created for |
| internal use by JMeter (for example, to find out what parameters are |
| supported by the client). |
| <p> |
| When the test is started, setupTest() will be called on each thread's |
| BackendListenerClient instance to initialize the client. Then handleSampleResult() will be |
| called for each SampleResult notification. Finally, teardownTest() will be called |
| to allow the client to do any necessary clean-up. |
| <p> |
| The JMeter BackendListener GUI allows a list of parameters to be defined for the |
| test. These are passed to the various test methods through the |
| <a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend"><code>BackendListenerContext</code></a>. A list of default parameters can be defined |
| through the getDefaultParameters() method. These parameters and any default |
| values associated with them will be shown in the GUI. Users can add other |
| parameters as well. |
| <p> |
| When possible, Listeners should extend <a href="../../../../../org/apache/jmeter/visualizers/backend/AbstractBackendListenerClient.html" title="class in org.apache.jmeter.visualizers.backend"><code>AbstractBackendListenerClient</code></a> rather than implementing BackendListenerClient |
| directly. This should protect your tests from future changes to the |
| interface. While it may be necessary to make changes to the BackendListenerClient |
| interface from time to time (therefore requiring changes to any |
| implementations of this interface), we intend to make this abstract class |
| provide reasonable default implementations of any new methods so that |
| subclasses do not necessarily need to be updated for new versions. |
| Implementing BackendListenerClient directly will continue to be supported for |
| cases where extending this class is not possible (for example, when the |
| client class is already a subclass of some other class).</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>2.13</dd> |
| </dl> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers">SampleResult</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerClient.html#createSampleResult-org.apache.jmeter.visualizers.backend.BackendListenerContext-org.apache.jmeter.samplers.SampleResult-">createSampleResult</a></span>(<a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context, |
| <a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers">SampleResult</a> result)</code> |
| <div class="block">Create a copy of SampleResult, this method is here to allow customizing |
| what is kept in the copy, for example copy could remove some useless fields.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/jmeter/config/Arguments.html" title="class in org.apache.jmeter.config">Arguments</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerClient.html#getDefaultParameters--">getDefaultParameters</a></span>()</code> |
| <div class="block">Provide a list of parameters which this test supports.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerClient.html#handleSampleResults-java.util.List-org.apache.jmeter.visualizers.backend.BackendListenerContext-">handleSampleResults</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers">SampleResult</a>> sampleResults, |
| <a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context)</code> |
| <div class="block">Handle sampleResults, this can be done in many ways: |
| |
| Write to a file |
| Write to a distant server |
| ... |
| </div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerClient.html#setupTest-org.apache.jmeter.visualizers.backend.BackendListenerContext-">setupTest</a></span>(<a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context)</code> |
| <div class="block">Do any initialization required by this client.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerClient.html#teardownTest-org.apache.jmeter.visualizers.backend.BackendListenerContext-">teardownTest</a></span>(<a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context)</code> |
| <div class="block">Do any clean-up required at the end of a test run.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="setupTest-org.apache.jmeter.visualizers.backend.BackendListenerContext-"> |
| <!-- --> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setupTest</h4> |
| <pre>void setupTest(<a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <div class="block">Do any initialization required by this client. It is generally |
| recommended to do any initialization such as getting parameter values in |
| the setupTest method rather than the runTest method in order to add as |
| little overhead as possible to the test.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - the context to run with. This provides access to |
| initialization parameters. |
| Context is readonly</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code> - when setup fails</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="handleSampleResults-java.util.List-org.apache.jmeter.visualizers.backend.BackendListenerContext-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>handleSampleResults</h4> |
| <pre>void handleSampleResults(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers">SampleResult</a>> sampleResults, |
| <a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context)</pre> |
| <div class="block">Handle sampleResults, this can be done in many ways: |
| <ul> |
| <li>Write to a file</li> |
| <li>Write to a distant server</li> |
| <li>...</li> |
| </ul></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sampleResults</code> - List of <a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers"><code>SampleResult</code></a></dd> |
| <dd><code>context</code> - the context to run with. This provides access to |
| initialization parameters.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="teardownTest-org.apache.jmeter.visualizers.backend.BackendListenerContext-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>teardownTest</h4> |
| <pre>void teardownTest(<a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <div class="block">Do any clean-up required at the end of a test run.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - the context to run with. This provides access to |
| initialization parameters.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code> - when tear down fails</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getDefaultParameters--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getDefaultParameters</h4> |
| <pre><a href="../../../../../org/apache/jmeter/config/Arguments.html" title="class in org.apache.jmeter.config">Arguments</a> getDefaultParameters()</pre> |
| <div class="block">Provide a list of parameters which this test supports. Any parameter |
| names and associated values returned by this method will appear in the |
| GUI by default so the user doesn't have to remember the exact names. The |
| user can add other parameters which are not listed here. If this method |
| returns null then no parameters will be listed. If the value for some |
| parameter is null then that parameter will be listed in the GUI with an |
| empty value.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a specification of the parameters used by this test which should |
| be listed in the GUI, or null if no parameters should be listed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createSampleResult-org.apache.jmeter.visualizers.backend.BackendListenerContext-org.apache.jmeter.samplers.SampleResult-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>createSampleResult</h4> |
| <pre><a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers">SampleResult</a> createSampleResult(<a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend">BackendListenerContext</a> context, |
| <a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers">SampleResult</a> result)</pre> |
| <div class="block">Create a copy of SampleResult, this method is here to allow customizing |
| what is kept in the copy, for example copy could remove some useless fields. |
| Note that if it returns null, the sample result is not put in the queue. |
| Defaults to returning result.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - <a href="../../../../../org/apache/jmeter/visualizers/backend/BackendListenerContext.html" title="class in org.apache.jmeter.visualizers.backend"><code>BackendListenerContext</code></a></dd> |
| <dd><code>result</code> - <a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers"><code>SampleResult</code></a></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><a href="../../../../../org/apache/jmeter/samplers/SampleResult.html" title="class in org.apache.jmeter.samplers"><code>SampleResult</code></a></dd> |
| </dl> |
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