org.rhq.modules.plugins.jbossas7
Class AbstractBaseDiscovery

java.lang.Object
  org.rhq.modules.plugins.jbossas7.AbstractBaseDiscovery

Direct Known Subclasses:

BaseProcessDiscovery, ManagedASDiscovery

public class AbstractBaseDiscovery
extends Object

Abstract base class for some discovery related functionality - especially in the area of processes and host.xml

Author:

Heiko W. Rupp

Nested Class Summary

protected static class

AbstractBaseDiscovery.HostPort Helper class that holds information about the host,port tuple

Field Summary

protected Document	hostXml
protected org.apache.commons.logging.Log	log

Constructor Summary

protected

AbstractBaseDiscovery()

Method Summary

protected String	determineServerVersionFromHomeDir(String homeDir)
protected String	findHostName() Try to determine the host name - that is the name of a standalone server or a host in domain mode by looking at the standalone.xml/host.xml files
protected AbstractBaseDiscovery.HostPort	getDomainControllerFromHostXml() Try to obtain the domain controller's location from looking at host.xml
protected String	getHostXmlFileLocation(ProcessInfo processInfo, boolean isDomain) Get the location of the host definition file (host.xml in domain mode, standalone.xml in standalone mode.
protected AbstractBaseDiscovery.HostPort	getManagementPortFromHostXml(String[] commandLine) Try to obtain the management IP and port from the already parsed host.xml or standalone.xml
protected String	obtainXmlPropertyViaXPath(String xpathExpression) Run the passed xpathExpression on the prepopulated hostXml document and return the target element or attribute as a String.
protected void	readStandaloneOrHostXml(ProcessInfo processInfo, boolean isDomainMode) Read the host.xml or standalone.xml file depending on isDomainMode.
protected void	readStandaloneOrHostXmlFromFile(String hostXmlFile)

Methods inherited from class java.lang.Object

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

Field Detail

hostXml

protected Document hostXml

log

protected final org.apache.commons.logging.Log log

Constructor Detail

AbstractBaseDiscovery

protected AbstractBaseDiscovery()

Method Detail

readStandaloneOrHostXml

protected void readStandaloneOrHostXml(ProcessInfo processInfo,
                                       boolean isDomainMode)

Read the host.xml or standalone.xml file depending on isDomainMode. If isDomainMode is true, host.xml is read, otherwise standalone.xml. The xml file content is stored in the variable hostXml for future use.

Parameters:

processInfo - Process info to determine the base file location

isDomainMode - Indiates if host.xml should be read (true) or standalone.xml (false)

readStandaloneOrHostXmlFromFile

protected void readStandaloneOrHostXmlFromFile(String hostXmlFile)

getManagementPortFromHostXml

protected AbstractBaseDiscovery.HostPort getManagementPortFromHostXml(String[] commandLine)

Try to obtain the management IP and port from the already parsed host.xml or standalone.xml

Parameters:

commandLine - Command line arguments of the process to

Returns:

an Object containing host and port

See Also:

on how to obtain the parsed xml

findHostName

protected String findHostName()

Try to determine the host name - that is the name of a standalone server or a host in domain mode by looking at the standalone.xml/host.xml files

Returns:

server name

getDomainControllerFromHostXml

protected AbstractBaseDiscovery.HostPort getDomainControllerFromHostXml()

Try to obtain the domain controller's location from looking at host.xml

Returns:

host and port of the domain controller

getHostXmlFileLocation

protected String getHostXmlFileLocation(ProcessInfo processInfo,
                                        boolean isDomain)

Get the location of the host definition file (host.xml in domain mode, standalone.xml in standalone mode.

Parameters:

processInfo - ProcessInfo structure containing the ENV variables

isDomain - Are we looking for host.xml (=isDomain) or not

Returns:

The path to the definition file.

determineServerVersionFromHomeDir

protected String determineServerVersionFromHomeDir(String homeDir)

obtainXmlPropertyViaXPath

protected String obtainXmlPropertyViaXPath(String xpathExpression)

Run the passed xpathExpression on the prepopulated hostXml document and return the target element or attribute as a String.

Parameters:

xpathExpression - XPath Expression to evaluate

Returns:

String value of the Element or Attribute the XPath was pointing to. Null in case the xpathExpression could not be evaluated.

Throws:

IllegalArgumentException - if hostXml is null