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package com.sun.enterprise.diagnostics;
import com.sun.enterprise.server.ApplicationServer;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.serverbeans.Config;
import com.sun.enterprise.config.serverbeans.ServerHelper;
import com.sun.enterprise.config.serverbeans.ConfigAPIHelper;
import com.sun.enterprise.config.serverbeans.DiagnosticService;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.LogService;
import com.sun.enterprise.config.serverbeans.ServerTags;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.admin.server.core.AdminService;
import com.sun.logging.LogDomains;
import com.sun.enterprise.diagnostics.collect.DomainXMLHelper;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.w3c.dom.*;
/**
* Helper which helps reading diagnostic service config elements from
* domain.xml either from runtime MBeans or by loading the document in local
* mode.
* @author Manisha Umbarje
*/
public class ServiceConfigHelper {
private Element configElement;
private Element diagnosticElement;
private DomainXMLHelper xmlHelper;
private boolean local;
private String configName;
private String repositoryDir;
private String instanceName;
private static String envInstanceRootVar ="${com.sun.aas.instanceRoot}";
private static Logger logger =
LogDomains.getLogger(LogDomains.ADMIN_LOGGER);
public ServiceConfigHelper(String instanceName) {
this.instanceName = instanceName;
}
public ServiceConfigHelper(String repositoryDir, String instanceName,
boolean local) {
this.repositoryDir = repositoryDir;
this.instanceName = instanceName;
this.local = local;
}
/**
* Returns value of specified attribute from domain.xml
*/
public String getAttribute(String attribute)
throws DiagnosticException {
if (local){
if (diagnosticElement == null)
initializeXMLElements();
return getDOMAttribute(attribute);
}
return getRuntimeAttribute(attribute);
}
/**
* Gets config name
* @return config name
*/
public String getConfigName() {
return configName;
}
/**
* Retrieves instance name
* @return instance name
*/
public String instanceName() {
return instanceName;
}
/**
* Initialize XML elements
*/
private void initializeXMLElements() throws DiagnosticException {
try {
xmlHelper = new DomainXMLHelper(repositoryDir);
Element element = xmlHelper.getElement("server", instanceName);
configName = xmlHelper.getAttribute(element, "config-ref");
configElement = xmlHelper.getElement("config", configName);
diagnosticElement = xmlHelper.getElement(configElement,
"diagnostic-service");
}catch(Exception e) {
e.printStackTrace();
throw new DiagnosticException(e.getMessage());
}
}
/**
* Retrieves value from runtime attributes
* @reutrn runtime value of a attribute
*/
private String getRuntimeAttribute(String attribute)
throws DiagnosticException {
try {
logger.log(Level.FINE, "Instance Name :" + instanceName);
ConfigContext configContext =
AdminService.getAdminService().getAdminContext().getAdminConfigContext();
Server server = ServerHelper.getServerByName(configContext, instanceName);
configName = server.getConfigRef();
Config config = ConfigAPIHelper.getConfigByName(configContext,
configName);
if(attribute.equals(ServerTags.FILE)) {
LogService logService = config.getLogService();
return determineLogFile(logService.getFile());
}
else {
DiagnosticService diagService = config.getDiagnosticService();
return diagService.getAttributeValue(attribute);
}
} catch(ConfigException ce) {
logger.log(Level.SEVERE,
"diagnostic-service.error_retrieving_logFileName",
ce.getMessage());
throw new DiagnosticException(ce.getMessage());
}
}//getRuntimeAttribute
/**
* Retrieves attribute from loaded DOM - domain.xml
* @return returns value of a attribute in a local mode
*/
private String getDOMAttribute(String attribute)
throws DiagnosticException {
if(attribute.equals(ServerTags.FILE)) {
Element logElement = xmlHelper.getElement(configElement,"log-service");
return determineLogFile(logElement.getAttribute(ServerTags.FILE));
}
logger.log(Level.FINEST, "diagnostic-service.attribute_name",
new Object[] {attribute});
logger.log(Level.FINEST, "diagnostic-service.attribute_value",
new Object[] {diagnosticElement.getAttribute(attribute)});
return diagnosticElement.getAttribute(attribute);
}//getDOMAttribute
/**
* Computes absolute path to log file from log-service/file
* attribute.
* @param logFileName log-service/file value
* @return absolute path of the log file.
*/
private String determineLogFile(String logFileName) {
if(logFileName.startsWith(envInstanceRootVar)) {
int length = envInstanceRootVar.length() ;
if(length > 0) {
String logFileSuffix = logFileName.substring(length);
if(repositoryDir != null)
logFileName = repositoryDir + logFileSuffix;
else
logFileName = logFileSuffix;
}
}
return logFileName;
}
}
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