Class AbstractBackendListenerClient
- java.lang.Object
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- org.apache.jmeter.visualizers.backend.AbstractBackendListenerClient
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- All Implemented Interfaces:
BackendListenerClient
- Direct Known Subclasses:
GraphiteBackendListenerClient
public abstract class AbstractBackendListenerClient extends Object implements BackendListenerClient
An abstract implementation of the BackendListenerClient interface. This implementation provides default implementations of most of the methods in the interface, as well as some convenience methods, in order to simplify development of BackendListenerClient implementations. 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 implementations of any new methods so that subclasses do not necessarily need to be updated for new versions. Therefore, when creating a new BackendListenerClient implementation, developers are encouraged to subclass this abstract class rather than implementing the BackendListenerClient interface directly. 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).The
BackendListenerClient.handleSampleResults(java.util.List, BackendListenerContext)
method of BackendListenerClient does not have a default implementation here, so subclasses must define at least this method. It may be useful to override other methods as well.- Since:
- 2.13
- See Also:
BackendListener.sampleOccurred(org.apache.jmeter.samplers.SampleEvent)
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Constructor Summary
Constructors Constructor Description AbstractBackendListenerClient()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SampleResult
createSampleResult(BackendListenerContext context, SampleResult result)
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.Arguments
getDefaultParameters()
Provide a list of parameters which this test supports.protected Logger
getLogger()
Get a Logger instance which can be used by subclasses to log information.protected Map<String,SamplerMetric>
getMetricsPerSampler()
protected SamplerMetric
getSamplerMetric(String sampleLabel)
protected UserMetric
getUserMetrics()
void
setupTest(BackendListenerContext context)
Do any initialization required by this client.void
teardownTest(BackendListenerContext context)
Do any clean-up required at the end of a test run.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.jmeter.visualizers.backend.BackendListenerClient
handleSampleResults
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Method Detail
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setupTest
public void setupTest(BackendListenerContext context) throws Exception
Description copied from interface:BackendListenerClient
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.- Specified by:
setupTest
in interfaceBackendListenerClient
- Parameters:
context
- the context to run with. This provides access to initialization parameters. Context is readonly- Throws:
Exception
- when setup fails
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teardownTest
public void teardownTest(BackendListenerContext context) throws Exception
Description copied from interface:BackendListenerClient
Do any clean-up required at the end of a test run.- Specified by:
teardownTest
in interfaceBackendListenerClient
- Parameters:
context
- the context to run with. This provides access to initialization parameters.- Throws:
Exception
- when tear down fails
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getDefaultParameters
public Arguments getDefaultParameters()
Description copied from interface:BackendListenerClient
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.- Specified by:
getDefaultParameters
in interfaceBackendListenerClient
- Returns:
- a specification of the parameters used by this test which should be listed in the GUI, or null if no parameters should be listed.
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getLogger
protected Logger getLogger()
Get a Logger instance which can be used by subclasses to log information. As this class is designed to be subclassed this is useful.- Returns:
- a Logger instance which can be used for logging
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createSampleResult
public SampleResult createSampleResult(BackendListenerContext context, SampleResult result)
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.- Specified by:
createSampleResult
in interfaceBackendListenerClient
- Parameters:
context
-BackendListenerContext
result
-SampleResult
- Returns:
SampleResult
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getSamplerMetric
protected final SamplerMetric getSamplerMetric(String sampleLabel)
- Parameters:
sampleLabel
- Name of sample used as key- Returns:
SamplerMetric
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getMetricsPerSampler
protected Map<String,SamplerMetric> getMetricsPerSampler()
- Returns:
- Map where key is SampleLabel and
SamplerMetric
is the metrics of this Sample
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getUserMetrics
protected UserMetric getUserMetrics()
- Returns:
UserMetric
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