de.innovationgate.wga.common

Interface LogHandler

public interface LogHandler

Interface for functionalities retrieving data from the application log

Field Summary

Fields

Modifier and Type	Field and Description
static int	SEARCHTYPE_PLAINTEXT Search type which searches for the given string as plaintext
static int	SEARCHTYPE_REGEXP Searchtype which searches for the given string as regular expression, matching a single applog line.

Method Summary

Methods

Modifier and Type	Method and Description
java.util.List	getLastPage(int size, LogLevel level) Returns the end of the applog
java.util.List	getPage(int from, int size, LogLevel level) Gets an applog page.
java.util.List	getPreviousPage(int start, int size, LogLevel level) Returns the previous page from the given start position.
java.util.List	search(int searchStartLine, int size, java.lang.String searchString, int searchType, boolean forward) Performs a search on the applog.

Field Detail

SEARCHTYPE_PLAINTEXT

static final int SEARCHTYPE_PLAINTEXT

Search type which searches for the given string as plaintext

See Also:

Constant Field Values

SEARCHTYPE_REGEXP

static final int SEARCHTYPE_REGEXP

Searchtype which searches for the given string as regular expression, matching a single applog line.

See Also:

Constant Field Values

Method Detail

getPage

java.util.List getPage(int from,
                     int size,
                     LogLevel level)
                       throws java.io.IOException

Gets an applog page. Each entry in returned list represents an applog line.

Parameters:

from - Starting line of the page

size - Number of lines

level - Lowest loglevel to include in the page. Lower levels will be filtered.

Returns:

The applog page as List of Strings

Throws:

java.io.IOException

getLastPage

java.util.List getLastPage(int size,
                         LogLevel level)
                           throws java.io.IOException

Returns the end of the applog

Parameters:

size - Number of lines to return

level - Lowest loglevel to include in the page. Lower levels will be filtered.

Returns:

The applog page as List of Strings

Throws:

java.io.IOException

getPreviousPage

java.util.List getPreviousPage(int start,
                             int size,
                             LogLevel level)
                               throws java.io.IOException

Returns the previous page from the given start position. Takes care that the result always ends with the line before start that would be shown on the given loglevel filter.

Parameters:

start - The position to whom the previous page should be returned

size - The number of lines to retun

level - Lowest loglevel to include in the page. Lower levels will be filtered.

Returns:

The applog page sas List of Strings

Throws:

java.io.IOException

search

java.util.List search(int searchStartLine,
                    int size,
                    java.lang.String searchString,
                    int searchType,
                    boolean forward)
                      throws java.io.IOException

Performs a search on the applog.

Parameters:

searchStartLine - The starting line in applog from which to search

size - The number of result lines to return

searchString - The string to search for.

searchType - The type of search. Use constants SEARCHTYPE_....

forward - When true search direction is forward, when false it is backward in the log

Returns:

List of matching line strings

Throws:

java.io.IOException