com.sun.enterprise.admin.util.InstanceStateFileProcessor Maven / Gradle / Ivy
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package com.sun.enterprise.admin.util;
import javax.xml.parsers.ParserConfigurationException;
import org.glassfish.api.admin.InstanceState;
import org.w3c.dom.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.*;
import java.util.HashMap;
import org.xml.sax.SAXException;
/**
* This parses the instance state file and sets up the InstanceState singleton object for use by
* various parts of the system
*/
class InstanceStateFileProcessor {
private Document xmlDoc = null;
private File stateFile;
private HashMap instanceStates;
public InstanceStateFileProcessor(HashMap st, File xmlFile)
throws IOException {
instanceStates = st;
stateFile = xmlFile;
parse();
}
private void parse() throws IOException {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setIgnoringElementContentWhitespace(true);
DocumentBuilder builder = factory.newDocumentBuilder();
this.xmlDoc = builder.parse(stateFile);
parseInstanceStateFile();
} catch (SAXException se) {
throw new IOException("Unable to parse instance state file", se);
} catch (ParserConfigurationException pce) {
throw new IOException("Unable to parse instance state file", pce);
}
}
static public InstanceStateFileProcessor createNew(HashMap st, File xmlFileObject)
throws IOException {
BufferedWriter writer = null;
try {
writer = new BufferedWriter(new FileWriter(xmlFileObject));
writer.write("");
writer.newLine();
writer.write("");
writer.newLine();
writer.write("false ");
writer.newLine();
for (String s : st.keySet()) {
writer.write(" ");
writer.newLine();
writer.flush();
} finally {
if (writer != null) {
writer.close();
}
}
return new InstanceStateFileProcessor(st, xmlFileObject);
}
public void addNewServer(String name) throws Exception {
String newState = InstanceState.StateType.NEVER_STARTED.getDescription();
Node i = findNode(name);
if (i != null) {
// deal with the case where an entry for this server was already
// in the list. This can happen the first time the file is created.
// In this case, remove the old information.
removeInstanceNode(name);
}
addInstanceNode(name, newState);
writeDoc();
}
private void parseInstanceStateFile() {
NodeList list = xmlDoc.getElementsByTagName("instance");
if(list==null) {
return;
}
for(int i=0; i