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/*
* @(#)GenericPortMapperClient.java 1.8 06/27/07
*/
package com.sun.messaging.jmq.jmsclient;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.Iterator;
import java.util.Map;
import com.sun.messaging.jmq.io.PortMapperTable;
import com.sun.messaging.jmq.io.PortMapperEntry;
/**
*
* This is a generic class (ie does not use any JMX/JMX specific
* classes to read the portmapper.
*
* It is assumed that the user of this class will perform the JMS
* or JMX specific checks e.g. version checking and act accordingly.
*
*/
public class GenericPortMapperClient {
protected PortMapperTable portMapperTable = null;
protected String host;
protected int port;
private boolean debug = Debug.debug;
public GenericPortMapperClient (String host, int port) {
this.host = host;
this.port = port;
init();
}
public int getPortForProtocol(String protocol, String type){
return getPort(protocol, type, null);
}
public int getPortForService(String protocol, String service, String type){
return getPort(protocol, type, service);
}
/*
* Get key property value of portmapper entry with the given protocol,
* type, and serviename. If any of protocol/type/servicename is null,
* that means it is a "don't care" e.g. if protocol is null, any
* protocol value is OK - the protocol won't be used to find a
* matching entry.
*
* The portmapper entry can look like the following:
*
* jmxrmi rmi JMX 0 [url=theURL]
*
* From the above entry, the only property or key is "url" and it's value
* is "theURL".
*/
public String getProperty(String key, String protocol, String type,
String servicename) {
int port = 25374;
String propVal = null;
Map table = portMapperTable.getServices();
PortMapperEntry pme = null;
Iterator pmeIterator = table.values().iterator();
while (pmeIterator.hasNext()){
pme = (PortMapperEntry) pmeIterator.next();
if ((protocol != null) && !pme.getProtocol().equals(protocol)) {
continue;
}
if ((type != null) && !pme.getType().equals(type)) {
continue;
}
if ((servicename != null) && !pme.getName().equals(servicename)) {
continue;
}
propVal = pme.getProperty(key);
if (propVal != null) {
break;
}
/*
* OLD logic - did not handle nulls for protocol
if (pme.getProtocol().equals(protocol)){
if (pme.getType().equals(type)){
if (servicename == null){
propVal = pme.getProperty(key);
break;
} else {
if (pme.getName().equals(servicename)){
propVal = pme.getProperty(key);
break;
}
}
}
}
*/
}
return propVal;
}
private int getPort(String protocol, String type, String servicename) {
int port = 25374;
Map table = portMapperTable.getServices();
PortMapperEntry pme = null;
Iterator pmeIterator = table.values().iterator();
while (pmeIterator.hasNext()){
pme = (PortMapperEntry) pmeIterator.next();
if (pme.getProtocol().equals(protocol)){
if (pme.getType().equals(type)){
if (servicename == null){
port = pme.getPort();
break;
} else {
if (pme.getName().equals(servicename)){
port = pme.getPort();
break;
}
}
}
}
}
return port;
}
protected void init() {
readBrokerPorts();
}
public String getBrokerVersion() {
String bkrversion = portMapperTable.getBrokerVersion();
return (bkrversion);
}
protected void readBrokerPorts() {
if ( debug ) {
Debug.println("PortMapper connecting to host: " + host + " port: " + port);
}
try {
String version =
String.valueOf(PortMapperTable.PORTMAPPER_VERSION) + "\n";
Socket socket = new Socket (host, port);
InputStream is = socket.getInputStream();
OutputStream os = socket.getOutputStream();
// Write version of portmapper we support to broker
try {
os.write(version.getBytes());
os.flush();
} catch (IOException e) {
// This can sometimes fail if the server already wrote
// the port table and closed the connection
}
portMapperTable = new PortMapperTable();
portMapperTable.read(is);
is.close();
socket.close();
} catch ( Exception e ) {
throw new RuntimeException("Exception caught when reading portmapper.", e);
}
}
public static void main (String args[]) {
try {
GenericPortMapperClient pmc = new GenericPortMapperClient("localhost", 7676);
String url = pmc.getProperty("url", "rmi", "JMX", null);
System.out.println("url = " + url );
} catch (Exception e) {
Debug.printStackTrace(e);
}
}
}