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## org.apache.jmeter.protocol.http.sampler
Class AccessLogSampler

    java.lang.Object
      org.apache.jmeter.testelement.AbstractTestElement
          org.apache.jmeter.samplers.AbstractSampler
              org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase
                  org.apache.jmeter.protocol.http.sampler.HTTPSampler
                      org.apache.jmeter.protocol.http.sampler.AccessLogSampler

All Implemented Interfaces:
  Serializable, Cloneable, HTTPConstantsInterface, Interruptible, Sampler, TestBean, TestElement, TestListener, ThreadListener

    public class AccessLogSampler

extends HTTPSampler
implements TestBean, ThreadListener

Description:
AccessLogSampler is responsible for a couple of things:

- creating instances of Generator
- creating instances of Parser
- triggering popup windows
- calling Generator.generateRequest()
- checking to make sure the classes are valid
- making sure a class can be instantiated

The intent of this sampler is it uses the generator and parser to create a HTTPSampler when it is needed. It does not contain logic about how to parse the logs. It also doesn't care how Generator is implemented, as long as it implements the interface. This means a person could simply implement a dummy parser to generate random parameters and the generator consumes the results. This wasn't the original intent of the sampler. I originaly wanted to write this sampler, so that I can take production logs to simulate production traffic in a test environment. Doing so is desirable to study odd or unusual behavior. It's also good to compare a new system against an existing system to get near apples- to-apples comparison. I've been asked if benchmarks are really fair comparisons just about every single time, so this helps me accomplish that task.

Some bugs only appear under production traffic, so it is useful to generate traffic using production logs. This way, JMeter can record when problems occur and provide a way to match the server logs.

Created on: Jun 26, 2003

See Also:
  Serialized Form

Field Summary
`static String` | `DEFAULT_CLASS`

Fields inherited from class org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase
`ARGUMENTS, AUTH_MANAGER, AUTO_REDIRECTS, CACHE_MANAGER, CLIENT, CONNECT_TIMEOUT, CONTENT_ENCODING, CONTENT_TYPE, COOKIE_MANAGER, DEFAULT_METHOD, DO_MULTIPART_POST, DOMAIN, EMBEDDED_URL_RE, FOLLOW_REDIRECTS, HEADER_MANAGER, IMAGE_PARSER, IMPLEMENTATION, MAX_FRAME_DEPTH, MAX_REDIRECTS, METHOD, MONITOR, NON_HTTP_RESPONSE_CODE, NON_HTTP_RESPONSE_MESSAGE, PATH, PORT, PROTOCOL, PROXYHOST, PROXYPASS, PROXYPORT, PROXYUSER, RESPONSE_TIMEOUT, UNSPECIFIED_PORT, UNSPECIFIED_PORT_AS_STRING, URL, URL_UNSPECIFIED_PORT, URL_UNSPECIFIED_PORT_AS_STRING, USE_KEEPALIVE`

Fields inherited from interface org.apache.jmeter.protocol.http.util.HTTPConstantsInterface
`APPLICATION_X_WWW_FORM_URLENCODED, CACHE_CONTROL, CONNECT, CONNECTION_CLOSE, DEFAULT_HTTP_PORT, DEFAULT_HTTP_PORT_STRING, DEFAULT_HTTPS_PORT, DEFAULT_HTTPS_PORT_STRING, DELETE, ENCODING_GZIP, ETAG, EXPIRES, GET, HEAD, HEADER_AUTHORIZATION, HEADER_CONNECTION, HEADER_CONTENT_DISPOSITION, HEADER_CONTENT_ENCODING, HEADER_CONTENT_LENGTH, HEADER_CONTENT_TYPE, HEADER_COOKIE, HEADER_LOCATION, HEADER_SET_COOKIE, HTTP_1_1, IF_MODIFIED_SINCE, IF_NONE_MATCH, KEEP_ALIVE, LAST_MODIFIED, MULTIPART_FORM_DATA, OPTIONS, POST, PROTOCOL_HTTP, PROTOCOL_HTTPS, PUT, TRACE, TRANSFER_ENCODING`

Fields inherited from interface org.apache.jmeter.testelement.TestElement
`COMMENTS, ENABLED, GUI_CLASS, NAME, TEST_CLASS`

Constructor Summary
`AccessLogSampler()`

Method Summary
`Object` | `clone()`
`String` | `getDomain()`
`String` | `getFilterClassName()`
`String` | `getLogFile()` Get the path where XML messages are stored. this is the directory where JMeter will randomly select a file.
`String` | `getParserClassName()` Get the file location of the xml file.
`String` | `getPortString()`
`protected void` | `initFilter()`
`void` | `instantiateParser()` Method will instantiate the log parser based on the class in the text field.
`boolean` | `isImageParsing()`
`SampleResult` | `sample(Entry e)` sample(Entry e) simply calls sample().
`SampleResult` | `sampleWithParser()` sample gets a new HTTPSampler from the generator and calls it's sample() method.
`void` | `setDomain(String domain)`
`void` | `setFilterClassName(String filterClassName)`
`void` | `setImageParsing(boolean imageParsing)`
`void` | `setLogFile(String path)` Set the path where XML messages are stored for random selection.
`void` | `setParserClassName(String classname)` it's kinda obvious, but we state it anyways.
`void` | `setPortString(String port)`
`void` | `testEnded()` Called once for all threads after the end of a test.
`void` | `testStarted()` Called just before the start of the test from the main engine thread.
`void` | `threadFinished()` Called for each thread after all samples have been processed.

Methods inherited from class org.apache.jmeter.protocol.http.sampler.HTTPSampler
`disconnect, getResponseHeaders, interrupt, readResponse, sample, sendPostData, setPostHeaders, setupConnection`

Methods inherited from class org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase
`addArgument, addArgument, addEncodedArgument, addEncodedArgument, addEncodedArgument, addNonEncodedArgument, addTestElement, downloadPageResources, encodeBackSlashes, encodeSpaces, errorResult, followRedirects, getArguments, getAuthManager, getAutoRedirects, getCacheManager, getClient, getConnectTimeout, getContentEncoding, getCookieManager, getDefaultPort, getDoMultipartPost, getEmbeddedUrlRE, getFollowRedirects, getHeaderManager, getHTTPFileCount, getHTTPFiles, getImplementation, getMethod, getMonitor, getPath, getPort, getPortIfSpecified, getProtocol, getProxyHost, getProxyPass, getProxyPortInt, getProxyUser, getQueryString, getQueryString, getResponseTimeout, getSendFileAsPostBody, getSendParameterValuesAsPostBody, getUrl, getUseKeepAlive, getUseMultipartForPost, getValidMethodsAsArray, hasArguments, isImageParser, isMonitor, isProtocolDefaultPort, isSecure, isSecure, isSuccessCode, parseArguments, parseArguments, readResponse, resultProcessing, sample, setArguments, setAuthManager, setAutoRedirects, setCacheManager, setClient, setConnectTimeout, setContentEncoding, setCookieManager, setDoMultipartPost, setEmbeddedUrlRE, setFollowRedirects, setHeaderManager, setHTTPFiles, setImageParser, setImplementation, setMD5, setMethod, setMonitor, setMonitor, setPath, setPath, setPort, setProtocol, setResponseTimeout, setUseKeepAlive, testEnded, testIterationStart, testStarted, threadStarted, toString, useMD5`

Methods inherited from class org.apache.jmeter.testelement.AbstractTestElement
`addProperty, canRemove, clear, clearTemporary, emptyTemporary, equals, getComment, getName, getProperty, getPropertyAsBoolean, getPropertyAsBoolean, getPropertyAsDouble, getPropertyAsFloat, getPropertyAsInt, getPropertyAsInt, getPropertyAsLong, getPropertyAsLong, getPropertyAsString, getPropertyAsString, getThreadContext, getThreadName, hashCode, isEnabled, isRunningVersion, isTemporary, logProperties, mergeIn, propertyIterator, recoverRunningVersion, removeProperty, setComment, setName, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setRunningVersion, setTemporary, setThreadContext, setThreadName, traverse, traverseCollection, traverseMap, traverseProperty`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface org.apache.jmeter.testelement.ThreadListener
`threadStarted`

Methods inherited from interface org.apache.jmeter.testelement.TestElement
`canRemove, clear, getComment, getName, getProperty, getPropertyAsBoolean, getPropertyAsBoolean, getPropertyAsDouble, getPropertyAsFloat, getPropertyAsInt, getPropertyAsInt, getPropertyAsLong, getPropertyAsLong, getPropertyAsString, getPropertyAsString, getThreadContext, getThreadName, isEnabled, isRunningVersion, isTemporary, propertyIterator, recoverRunningVersion, removeProperty, setComment, setName, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setRunningVersion, setTemporary, setThreadContext, setThreadName, traverse`

Field Detail

### DEFAULT_CLASS

    public static final String DEFAULT_CLASS

See Also:
  Constant Field Values

Constructor Detail

### AccessLogSampler

    public AccessLogSampler()

Method Detail

### setLogFile

    public void setLogFile(String path)

  Set the path where XML messages are stored for random selection.

### getLogFile

    public String getLogFile()

  Get the path where XML messages are stored. this is the directory where JMeter will randomly select a file.

### setParserClassName

    public void setParserClassName(String classname)

  it's kinda obvious, but we state it anyways. Set the xml file with a string path.

  Parameters:
    `classname` - - parser class name

### getParserClassName

    public String getParserClassName()

  Get the file location of the xml file.

  Returns:
    String file path.

### sampleWithParser

    public SampleResult sampleWithParser()

  sample gets a new HTTPSampler from the generator and calls it's sample() method.

### sample

    public SampleResult sample(Entry e)

  sample(Entry e) simply calls sample().

  Specified by:
    `sample` in interface `Sampler`
  Overrides:
    `sample` in class `HTTPSamplerBase`
  Parameters:
    `e` - - ignored
  Returns:
    the new sample

### instantiateParser

    public void instantiateParser()

  Method will instantiate the log parser based on the class in the text field. This was done to make it easier for people to plugin their own log parser and use different log parser.

### getFilterClassName

    public String getFilterClassName()

  Returns:
    Returns the filterClassName.

### setFilterClassName

    public void setFilterClassName(String filterClassName)

  Parameters:
    `filterClassName` - The filterClassName to set.

### getDomain

    public String getDomain()

  Overrides:
    `getDomain` in class `HTTPSamplerBase`
  Returns:
    Returns the domain.

### setDomain

    public void setDomain(String domain)

  Overrides:
    `setDomain` in class `HTTPSamplerBase`
  Parameters:
    `domain` - The domain to set.

### isImageParsing

    public boolean isImageParsing()

  Returns:
    Returns the imageParsing.

### setImageParsing

    public void setImageParsing(boolean imageParsing)

  Parameters:
    `imageParsing` - The imageParsing to set.

### getPortString

    public String getPortString()

  Returns:
    Returns the port.

### setPortString

    public void setPortString(String port)

  Parameters:
    `port` - The port to set.

### initFilter

    protected void initFilter()

### clone

    public Object clone()

  Specified by:
    `clone` in interface `TestElement`
  Overrides:
    `clone` in class `HTTPSamplerBase`

### testEnded

    public void testEnded()

  Called once for all threads after the end of a test. This will use the same element instances as at the start of the test.

  N.B. testStarted() and testEnded() are called from different threads.

  Specified by:
    `testEnded` in interface `TestListener`
  Overrides:
    `testEnded` in class `HTTPSamplerBase`
  See Also:
    `StandardJMeterEngine.stopTest()`

### testStarted

    public void testStarted()

  Called just before the start of the test from the main engine thread. This is before the test elements are cloned. Note that not all the test variables will have been set up at this point.

  N.B. testStarted() and testEnded() are called from different threads.

  Specified by:
    `testStarted` in interface `TestListener`
  Overrides:
    `testStarted` in class `HTTPSamplerBase`
  See Also:
    `StandardJMeterEngine.run()`

### threadFinished

    public void threadFinished()

  Called for each thread after all samples have been processed.

  Specified by:
    `threadFinished` in interface `ThreadListener`
  Overrides:
    `threadFinished` in class `HTTPSamplerBase`
  See Also:
    `JMeterThread.threadFinished()`

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