java.lang.Object
org.apache.jmeter.protocol.http.util.accesslog.LogFilter
All Implemented Interfaces:
Serializable, Filter

public class LogFilter extends Object implements Filter, Serializable
Description:

LogFilter is a basic implementation of Filter interface. This implementation will keep a record of the filtered strings to avoid repeating the process unnecessarily.

The current implementation supports replacing the file extension. The reason for supporting this is from first hand experience porting an existing website to Tomcat + JSP. Later on we may want to provide the ability to replace the whole filename. If the need materializes, we can add it later.

Example of how to use it is provided in the main method. An example is provided below.


 testf = new LogFilter();
 String[] incl = { "hello.html", "index.html", "/index.jsp" };
 String[] theFiles = {
     "/test/hello.jsp", "/test/one/hello.html", "hello.jsp", "hello.htm", "/test/open.jsp",
     "/test/open.html", "/index.jsp", "/index.jhtml", "newindex.jsp", "oldindex.jsp", "oldindex1.jsp",
     "oldindex2.jsp", "oldindex3.jsp", "oldindex4.jsp", "oldindex5.jsp", "oldindex6.jsp", "/test/index.htm"
 };
 testf.excludeFiles(incl);
 System.out.println(" ------------ exclude test -------------");
 for (String theFile : theFiles) {
  boolean fl = testf.isFiltered(theFile);
  String line = testf.filter(theFile);
  if (line != null) {
     System.out.println("the file: " + line);
  }
 }
 
As a general note. Both isFiltered and filter() have to be called. Calling either one will not produce the desired result. isFiltered(string) will tell you if a string should be filtered. The second step is to filter the string, which will return null if it is filtered and replace any part of the string that should be replaced.
See Also:
  • Field Details

    • CHANGEEXT

      protected boolean CHANGEEXT
    • OLDEXT

      protected String OLDEXT
    • NEWEXT

      protected String NEWEXT
    • INCFILE

      protected String[] INCFILE
    • EXCFILE

      protected String[] EXCFILE
    • FILEFILTER

      protected boolean FILEFILTER
    • USEFILE

      protected boolean USEFILE
    • INCPTRN

      protected String[] INCPTRN
    • EXCPTRN

      protected String[] EXCPTRN
    • PTRNFILTER

      protected boolean PTRNFILTER
    • EXCPATTERNS

      protected ArrayList<org.apache.oro.text.regex.Pattern> EXCPATTERNS
    • INCPATTERNS

      protected ArrayList<org.apache.oro.text.regex.Pattern> INCPATTERNS
    • NEWFILE

      protected String NEWFILE
  • Constructor Details

    • LogFilter

      public LogFilter()
  • Method Details

    • setReplaceExtension

      public void setReplaceExtension(String oldext, String newext)
      The method will replace the file extension with the new one. You can either provide the extension without the period ".", or with. The method will check for period and add it if it isn't present.
      Specified by:
      setReplaceExtension in interface Filter
      Parameters:
      oldext - old extension
      newext - new extension
      See Also:
    • includeFiles

      public void includeFiles(String[] filenames)
      Give the filter a list of files to include
      Specified by:
      includeFiles in interface Filter
      Parameters:
      filenames - list of files to include
      See Also:
    • excludeFiles

      public void excludeFiles(String[] filenames)
      Give the filter a list of files to exclude
      Specified by:
      excludeFiles in interface Filter
      Parameters:
      filenames - list of files to exclude
      See Also:
    • includePattern

      public void includePattern(String[] regexp)
      Give the filter a set of regular expressions to filter with for inclusion. This method hasn't been fully implemented and test yet. The implementation is not complete.
      Specified by:
      includePattern in interface Filter
      Parameters:
      regexp - list of regular expressions
      See Also:
    • excludePattern

      public void excludePattern(String[] regexp)
      Give the filter a set of regular expressions to filter with for exclusion. This method hasn't been fully implemented and test yet. The implementation is not complete.
      Specified by:
      excludePattern in interface Filter
      Parameters:
      regexp - list of regular expressions
      See Also:
    • isFiltered

      public boolean isFiltered(String path, TestElement el)
      In the case of log filtering the important thing is whether the log entry should be used. Therefore, the method will only return true if the entry should be used. Since the interface defines both inclusion and exclusion, that means by default inclusion filtering assumes all entries are excluded unless it matches. In the case of exclusion filtering, it assumes all entries are included unless it matches, which means it should be excluded.
      Specified by:
      isFiltered in interface Filter
      Parameters:
      path - path to be tested
      el - TestElement in which the line would be added
      Returns:
      true if entry should be excluded
      See Also:
    • filterFile

      protected boolean filterFile(String file)
      Filter the file. The implementation performs the exclusion first before the inclusion. This means if a file name is in both string arrays, the exclusion will take priority. Depending on how users expect this to work, we may want to change the priority so that inclusion is performed first and exclusion second. Another possible alternative is to perform both inclusion and exclusion. Doing so would make the most sense if the method throws an exception and tells the user the same filename is in both the include and exclude array.
      Parameters:
      file - the file to filter
      Returns:
      boolean
    • incFile

      public boolean incFile(String text)
      Method implements the logic for filtering file name inclusion. The method iterates through the array and uses indexOf. Once it finds a match, it won't bother with the rest of the filenames in the array.
      Parameters:
      text - name of the file to tested (must not be null)
      Returns:
      boolean include
    • excFile

      public boolean excFile(String text)
      Method implements the logic for filtering file name exclusion. The method iterates through the array and uses indexOf. Once it finds a match, it won't bother with the rest of the filenames in the array.
      Parameters:
      text - name of the file to be tested (must not be null)
      Returns:
      boolean exclude
    • filterPattern

      protected boolean filterPattern(String text)
      The current implementation assumes the user has checked the regular expressions so that they don't cancel each other. The basic assumption is the method will return true if the text should be filtered. If not, it will return false, which means it should not be filtered.
      Parameters:
      text - text to be checked
      Returns:
      boolean
    • incPattern

      protected boolean incPattern(String text)
      By default, the method assumes the entry is not included, unless it matches. In that case, it will return true.
      Parameters:
      text - text to be checked
      Returns:
      true if text is included
    • excPattern

      protected boolean excPattern(String text)
      The method assumes by default the text is not excluded. If the text matches the pattern, it will then return true.
      Parameters:
      text - text to be checked
      Returns:
      true if text is excluded
    • replaceExtension

      public boolean replaceExtension(String text)
      Method uses indexOf to replace the old extension with the new extension. It might be good to use regular expression, but for now this is a simple method. The method isn't designed to replace multiple instances of the text, since that isn't how file extensions work. If the string contains more than one instance of the old extension, only the first instance will be replaced.
      Parameters:
      text - name of the file in which the extension should be replaced (must not be null)
      Returns:
      true if the extension could be replaced, false otherwise
    • filter

      public String filter(String text)
      The current implementation checks the boolean if the text should be used or not. isFilter( string) has to be called first.
      Specified by:
      filter in interface Filter
      Parameters:
      text - log line to be filtered
      Returns:
      String
      See Also:
    • createPattern

      public org.apache.oro.text.regex.Pattern createPattern(String pattern)
      create a new pattern object from the string.
      Parameters:
      pattern - string representation of the perl5 compatible regex pattern
      Returns:
      compiled Pattern, or null if no pattern could be compiled
    • reset

      public void reset()
      Tell the filter when the parsing has reached the end of the log file and is about to begin again. Gives the filter a chance to adjust it's values, if needed.
      Specified by:
      reset in interface Filter