Glassfish example source code file (ManagementMessageBuilder.java)
The Glassfish ManagementMessageBuilder.java source code/*
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package com.sun.enterprise.jbi.serviceengine.util;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import java.io.StringWriter;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
/**
* BuildManagementMessageImpl provides utility methods to build messages (as XML string)
* that are returned to the clients by the JBI Framework.
*
* @author bhavanishankar@dev.java.net.
*/
public class ManagementMessageBuilder {
/**
* String to represent UNKNOWN elements
*/
private static final String MISSING_DATA_STRING = "UNKNOWN";
/**
* String to represent INVALID input
*/
private static final String CANNOT_BUILD_MESSAGE_STRING =
"CANNOT_BUILD_MESSAGE_INVALID_DATA";
/**
* Max. nesting level
*/
private static final int MAX_NESTING_LEVEL = 32;
/**
* Creates a new <CODE>BuildManagementMessageImpl instance.
*/
public ManagementMessageBuilder() {
}
/**
* Return an XML string of the task result(either status of exception). This is the
* task executed by the component
*
* @param cmObj Status details of the component
* @return XML string with task status
* @throws Exception If fails to build XML string
*/
public String buildComponentMessage(ComponentMessageHolder cmObj)
throws Exception {
String mMsgTypeToBuild = null;
String compTaskMsg = null;
try {
mMsgTypeToBuild = cmObj.getComponentMessageType();
if (mMsgTypeToBuild.equalsIgnoreCase("STATUS_MSG")) {
compTaskMsg = buildComponentTaskStatusMessage(cmObj);
}
if (mMsgTypeToBuild.equalsIgnoreCase("EXCEPTION_MSG")) {
compTaskMsg = buildComponentTaskExceptionMessage(cmObj);
}
if (compTaskMsg == null) {
compTaskMsg = CANNOT_BUILD_MESSAGE_STRING;
}
}
catch (Exception e) {
throw e;
}
return compTaskMsg;
}
/**
* Return an XML string of the task status. This is the task executed by the
* component
*
* @param mmObj Status details of the component
* @return XML string with task status
* @throws Exception If fails to build XML string
*/
public String buildComponentTaskStatusMessage(ComponentMessageHolder mmObj)
throws Exception {
String cmpStatMsg = null;
Document doc = null;
String locToken = null;
String locMessage = null;
String locParam = null;
try {
String componentName = mmObj.getComponentName();
if (componentName == null) {
componentName = MISSING_DATA_STRING;
}
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.newDocument();
Element elem = doc.createElementNS(
"http://java.sun.com/xml/ns/jbi/management-message",
"component-task-result");
Element compNameElem = doc.createElement("component-name");
Element compTaskRsltDtlsElem =
doc.createElement("component-task-result-details");
DOMUtil.UTIL.setTextData(compNameElem, componentName);
Element taskRsltDtlsElem = buildStatusXMLFragment(doc, mmObj);
compTaskRsltDtlsElem.appendChild(taskRsltDtlsElem);
elem.appendChild(compNameElem);
elem.appendChild(compTaskRsltDtlsElem);
doc.appendChild(elem);
StringWriter sw = new StringWriter();
cmpStatMsg = DOMUtil.UTIL.DOM2String(doc, sw);
}
catch (Exception e) {
e.printStackTrace();
throw e;
}
return cmpStatMsg;
}
/**
* DOCUMENT ME!
*
* @param doc DOCUMENT ME!
* @param mmObj DOCUMENT ME!
* @return DOCUMENT ME!
* @throws Exception DOCUMENT ME!
*/
private Element buildStatusXMLFragment(
Document doc,
ComponentMessageHolder mmObj
) throws Exception {
String cmpStatMsg = null;
String locToken = null;
String locMessage = null;
String[] locParam = null;
Element taskRsltDtlsElem = null;
try {
String taskName = mmObj.getTaskName();
if (taskName == null) {
/* Note : Since this is a helper class which can
* be instantiated by the component, JBI resource
* bundle cannot be used. Hence strings are hard coded.
*/
String errMsg =
"JBIMA0451: BuildManagementMessage : Task name cannot be null ";
throw new Exception(errMsg);
}
String taskResult = mmObj.getTaskResult();
if (taskResult == null) {
/* Note : Since this is a helper class which can
* be instantiated by the component, JBI resource
* bundle cannot be used. Hence strings are hard coded.
*/
String errMsg =
"JBIMA0456: BuildManagementMessage : Task result cannot be null ";
throw new Exception(errMsg);
}
String messageType = mmObj.getStatusMessageType();
if (messageType != null) {
locToken = mmObj.getLocToken(1);
if (locToken == null) {
locToken = MISSING_DATA_STRING;
}
locMessage = mmObj.getLocMessage(1);
if (locMessage == null) {
locMessage = MISSING_DATA_STRING;
}
locParam = (String[]) mmObj.getLocParam(1);
}
Element[] msgLocInfoElem = new Element[MAX_NESTING_LEVEL];
Element[] locTokenElem = new Element[MAX_NESTING_LEVEL];
Element[] locMessageElem = new Element[MAX_NESTING_LEVEL];
Element[] taskStatMsgElem = new Element[MAX_NESTING_LEVEL];
taskRsltDtlsElem = doc.createElement("task-result-details");
Element taskIdElem = doc.createElement("task-id");
Element taskRsltStatElem = doc.createElement("task-result");
Element msgTypeElem = doc.createElement("message-type");
taskStatMsgElem[0] = doc.createElement("task-status-msg");
msgLocInfoElem[0] = doc.createElement("msg-loc-info");
locTokenElem[0] = doc.createElement("loc-token");
locMessageElem[0] = doc.createElement("loc-message");
DOMUtil.UTIL.setTextData(taskIdElem, taskName);
DOMUtil.UTIL.setTextData(taskRsltStatElem, taskResult);
taskRsltDtlsElem.appendChild(taskIdElem);
taskRsltDtlsElem.appendChild(taskRsltStatElem);
int j = 0;
if (messageType != null) {
DOMUtil.UTIL.setTextData(msgTypeElem, messageType);
while ((locToken != null) && (locMessage != null)) {
DOMUtil.UTIL.setTextData(locTokenElem[j], locToken);
DOMUtil.UTIL.setTextData(locMessageElem[j], locMessage);
taskRsltDtlsElem.appendChild(msgTypeElem);
msgLocInfoElem[j].appendChild(locTokenElem[j]);
msgLocInfoElem[j].appendChild(locMessageElem[j]);
if (locParam != null) {
Element[] locParamElem = new Element[MAX_NESTING_LEVEL];
for (int k = 0; k < locParam.length; k++) {
locParamElem[k] = doc.createElement("loc-param");
DOMUtil.UTIL
.setTextData(locParamElem[k], locParam[k]);
msgLocInfoElem[j].appendChild(locParamElem[k]);
}
}
taskStatMsgElem[j].appendChild(msgLocInfoElem[j]);
taskRsltDtlsElem.appendChild(taskStatMsgElem[j]);
j++;
locToken = mmObj.getLocToken(j + 1);
locMessage = mmObj.getLocMessage(j + 1);
locParam = mmObj.getLocParam(j + 1);
taskStatMsgElem[j] = doc.createElement("task-status-msg");
msgLocInfoElem[j] = doc.createElement("msg-loc-info");
locTokenElem[j] = doc.createElement("loc-token");
locMessageElem[j] = doc.createElement("loc-message");
}
}
}
catch (Exception e) {
e.printStackTrace();
throw e;
}
return taskRsltDtlsElem;
}
/**
* DOCUMENT ME!
*
* @param doc DOCUMENT ME!
* @param mmObj DOCUMENT ME!
* @return DOCUMENT ME!
* @throws Exception DOCUMENT ME!
*/
public Element buildExceptionXMLFragment(
Document doc,
ComponentMessageHolder mmObj
) throws Exception {
String cmpStatMsg = null;
String locToken = null;
String locMessage = null;
String[] locParam = null;
Throwable exObj = null;
Element taskRsltDtlsElem = null;
try {
String taskName = mmObj.getTaskName();
if (taskName == null) {
/* Note : Since this is a helper class which can
* be instantiated by the component, JBI resource
* bundle cannot be used. Hence strings are hard coded.
*/
String errMsg =
"JBIMA0452: BuildManagementMessage : Task name cannot be null ";
throw new Exception(errMsg);
}
String taskResult = mmObj.getTaskResult();
if (taskResult == null) {
/* Note : Since this is a helper class which can
* be instantiated by the component, JBI resource
* bundle cannot be used. Hence strings are hard coded.
*
*/
String errMsg =
"JBIMA0453: BuildManagementMessage : Task result cannot be null ";
throw new Exception(errMsg);
}
String messageType = mmObj.getExceptionMessageType();
locToken = mmObj.getLocToken(1);
if (locToken == null) {
locToken = MISSING_DATA_STRING;
}
locMessage = mmObj.getLocMessage(1);
locParam = mmObj.getLocParam(1);
exObj = mmObj.getExceptionObject();
taskRsltDtlsElem = doc.createElement("task-result-details");
Element taskIdElem = doc.createElement("task-id");
Element taskRsltStatElem = doc.createElement("task-result");
Element msgTypeElem = doc.createElement("message-type");
DOMUtil.UTIL.setTextData(taskIdElem, taskName);
DOMUtil.UTIL.setTextData(taskRsltStatElem, taskResult);
if (messageType != null) {
DOMUtil.UTIL.setTextData(msgTypeElem, messageType);
taskRsltDtlsElem.appendChild(msgTypeElem);
}
taskRsltDtlsElem.appendChild(taskIdElem);
taskRsltDtlsElem.appendChild(taskRsltStatElem);
if (messageType != null) {
DOMUtil.UTIL.setTextData(msgTypeElem, messageType);
taskRsltDtlsElem.appendChild(msgTypeElem);
}
if (exObj == null) {
Element exInfoElem = doc.createElement("exception-info");
Element msgLocInfoElem = doc.createElement("msg-loc-info");
Element locTokenElem = doc.createElement("loc-token");
Element locMessageElem = doc.createElement("loc-message");
Element nestingLevelElem = doc.createElement("nesting-level");
Element stckTraceElem = doc.createElement("stack-trace");
DOMUtil.UTIL.setTextData(locTokenElem, locToken);
if (locMessage != null) {
DOMUtil.UTIL.setTextData(locMessageElem, locMessage);
} else {
DOMUtil.UTIL
.setTextData(locMessageElem, MISSING_DATA_STRING);
}
DOMUtil.UTIL.setTextData(nestingLevelElem, MISSING_DATA_STRING);
DOMUtil.UTIL.setTextData(stckTraceElem, MISSING_DATA_STRING);
msgLocInfoElem.appendChild(locTokenElem);
msgLocInfoElem.appendChild(locMessageElem);
if (locParam != null) {
Element[] locParamElem = new Element[MAX_NESTING_LEVEL];
for (int i = 0; i < locParam.length; i++) {
locParamElem[i] = doc.createElement("loc-param");
DOMUtil.UTIL.setTextData(locParamElem[i], locParam[i]);
msgLocInfoElem.appendChild(locParamElem[i]);
}
}
exInfoElem.appendChild(nestingLevelElem);
exInfoElem.appendChild(msgLocInfoElem);
exInfoElem.appendChild(stckTraceElem);
taskRsltDtlsElem.appendChild(exInfoElem);
} else {
int nestingLevel = 1;
Element[] exInfoElem = new Element[MAX_NESTING_LEVEL];
Element[] msgLocInfoElem = new Element[MAX_NESTING_LEVEL];
Element[] locTokenElem = new Element[MAX_NESTING_LEVEL];
Element[] locMessageElem = new Element[MAX_NESTING_LEVEL];
Element[] nestingLevelElem = new Element[MAX_NESTING_LEVEL];
Element[] stckTraceElem = new Element[MAX_NESTING_LEVEL];
while (exObj != null) {
exInfoElem[nestingLevel] =
doc.createElement("exception-info");
msgLocInfoElem[nestingLevel] =
doc.createElement("msg-loc-info");
locTokenElem[nestingLevel] = doc.createElement("loc-token");
locMessageElem[nestingLevel] =
doc.createElement("loc-message");
nestingLevelElem[nestingLevel] =
doc.createElement("nesting-level");
stckTraceElem[nestingLevel] =
doc.createElement("stack-trace");
StackTraceElement[] stckTrElem = exObj.getStackTrace();
StringBuffer sb = new StringBuffer("");
if (stckTrElem != null) {
for (int i = 0; i < stckTrElem.length; i++) {
String stckTrace = stckTrElem[i].toString();
sb.append(stckTrace);
sb.append("\n");
}
}
if (nestingLevel == 1) {
DOMUtil.UTIL
.setTextData(locTokenElem[nestingLevel],
locToken);
if (locMessage == null) {
DOMUtil.UTIL.setTextData(
locMessageElem[nestingLevel],
exObj.getMessage()
);
} else {
DOMUtil.UTIL.setTextData(
locMessageElem[nestingLevel],
locMessage
);
}
} else {
String errMsgWithToken = exObj.getMessage();
String token = errMsgWithToken.substring(0, 9);
String errMsg = null;
if (token.startsWith("JBI")) {
errMsg = errMsgWithToken.substring(11);
} else {
token = MISSING_DATA_STRING;
errMsg = errMsgWithToken;
}
DOMUtil.UTIL
.setTextData(locTokenElem[nestingLevel], token);
DOMUtil.UTIL
.setTextData(locMessageElem[nestingLevel],
errMsg);
}
DOMUtil.UTIL.setTextData(
nestingLevelElem[nestingLevel],
Integer.toString(nestingLevel)
);
DOMUtil.UTIL
.setTextData(stckTraceElem[nestingLevel],
sb.toString());
msgLocInfoElem[nestingLevel].appendChild(locTokenElem[nestingLevel]);
msgLocInfoElem[nestingLevel].appendChild(
locMessageElem[nestingLevel]
);
if (nestingLevel == 1) {
if (locParam != null) {
Element[] locParamElem =
new Element[MAX_NESTING_LEVEL];
for (int i = 0; i < locParam.length; i++) {
locParamElem[i] =
doc.createElement("loc-param");
DOMUtil.UTIL
.setTextData(locParamElem[i],
locParam[i]);
msgLocInfoElem[nestingLevel].appendChild(
locParamElem[i]);
}
}
} else {
Element locParamElement =
doc.createElement("loc-param");
DOMUtil.UTIL
.setTextData(locParamElement,
MISSING_DATA_STRING);
msgLocInfoElem[nestingLevel].appendChild(locParamElement);
}
exInfoElem[nestingLevel].appendChild(nestingLevelElem[nestingLevel]);
exInfoElem[nestingLevel].appendChild(msgLocInfoElem[nestingLevel]);
exInfoElem[nestingLevel].appendChild(stckTraceElem[nestingLevel]);
taskRsltDtlsElem.appendChild(exInfoElem[nestingLevel]);
nestingLevel++;
exObj = exObj.getCause();
}
}
}
catch (Exception e) {
e.printStackTrace();
throw e;
}
return taskRsltDtlsElem;
}
/**
* Constructs an XML string of the component exception.
*
* @param mmObj HashMap containing component exception information
* @return XML string representing component exception
* @throws Exception If fails to build component exception message
*/
public String buildComponentTaskExceptionMessage(ComponentMessageHolder mmObj)
throws Exception {
String cmpStatMsg = null;
Document doc = null;
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.newDocument();
Element elem = doc.createElementNS(
"http://java.sun.com/xml/ns/jbi/management-message",
"component-task-result");
Element compNameElem = doc.createElement("component-name");
Element compTaskRsltDtlsElem =
doc.createElement("component-task-result-details");
String componentName = mmObj.getComponentName();
if (componentName == null) {
String errMsg =
"JBIMA0457: BuildManagementMessage : Component name cannot be null ";
throw new Exception(errMsg);
}
DOMUtil.UTIL.setTextData(compNameElem, componentName);
Element taskRsltDtlsElem = buildExceptionXMLFragment(doc, mmObj);
compTaskRsltDtlsElem.appendChild(taskRsltDtlsElem);
elem.appendChild(compNameElem);
elem.appendChild(compTaskRsltDtlsElem);
doc.appendChild(elem);
StringWriter sw = new StringWriter();
cmpStatMsg = DOMUtil.UTIL.DOM2String(doc, sw);
}
catch (Exception e) {
throw e;
}
return cmpStatMsg;
}
}
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