org.rhq.plugins.apache.mapping
Class ApacheDirectiveRegExpression

java.lang.Object
  org.rhq.plugins.apache.mapping.ApacheDirectiveRegExpression

public class ApacheDirectiveRegExpression
extends Object

The httpd lens doesn't give us very detailed information about the directive parameters. It just supplies a list of "param" nodes each containing a value for one parameter of a directive (how we wish it could be otherwise and the lens be more sophisticated).

In order to extract the useful information from this that we can use for mapping these params to RHQ configuration properties, we define a series of regular expressions that are designed to work with a space concatenated list of params supplied by Augeas.

In these regular expressions, each capturing group corresponds (in the exact order) to the properties defined in the resource configurations.

Author:

Filip Drabek, Lukas Krejci

Field Summary

static String	NUM
static String	WORD
static String	WS
static String	WS_MAN

Constructor Summary

ApacheDirectiveRegExpression()

Method Summary

static List<String>	createParams(String params, String name)
static DirectiveMapping	getMappingType(String directiveName) The properties in the resource configuration share a couple of common patterns how they map to the augeas tree.
static List<String>	getParams(AugeasNode parentNode) Parses the parameters of the supplied node and returns a list of strings, each containing a value for a simple property corresponding to that parameter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

WORD

public static final String WORD

See Also:

Constant Field Values

WS

public static final String WS

See Also:

Constant Field Values

WS_MAN

public static final String WS_MAN

See Also:

Constant Field Values

NUM

public static final String NUM

See Also:

Constant Field Values

Constructor Detail

ApacheDirectiveRegExpression

public ApacheDirectiveRegExpression()

Method Detail

getParams

public static List<String> getParams(AugeasNode parentNode)

Parses the parameters of the supplied node and returns a list of strings, each containing a value for a simple property corresponding to that parameter.

A null value means that the parameters for given property was not defined in the configuration file.

Parameters:

parentNode - the node containing the "param" sub nodes to parse

Returns:

the list of mappable parameters

createParams

public static List<String> createParams(String params,
                                        String name)

getMappingType

public static DirectiveMapping getMappingType(String directiveName)

The properties in the resource configuration share a couple of common patterns how they map to the augeas tree. This method returns the corresponding mapping type for a directive.

Parameters:

directiveName - the directive to find out the mapping type of.

Returns:

the mapping type that can be used to perform the mapping to the property.