psl.worklets.http
Class ClassFileServer

java.lang.Object
  |
  +--psl.worklets.http.ClassServer
        |
        +--psl.worklets.http.ClassFileServer

All Implemented Interfaces:

java.lang.Runnable

public class ClassFileServer

extends ClassServer

The ClassFileServer implements a ClassServer that reads class files from the file system. See the doc for the "Main" method for how to run this server.

Field Summary

private java.util.Vector	aliases
private java.lang.String	default_codebase
private static int	DefaultServerPort
private java.lang.String	toString

Fields inherited from class psl.worklets.http.ClassServer

port, server

Constructor Summary

ClassFileServer(int port, java.lang.String codebase)
Constructs a ClassFileServer.

ClassFileServer(int port, java.lang.String codebase, psl.worklets.WVM_SSLSocketFactory wvm_sf)

ClassFileServer(java.lang.String protocol, java.lang.String host, int port, java.lang.String codebase, psl.worklets.WVM_SSLSocketFactory wvm_sf)

Method Summary

private byte[]	classExtract(java.io.File f)
private java.io.File	findFile(java.lang.String rootPath, java.lang.String path)
java.util.Vector	getAliases()
byte[]	getBytes(java.lang.String path) Returns an array of bytes containing the bytecodes for the class represented by the argument path.
int	getWebPort()
private byte[]	jarExtract(java.io.File f, java.lang.String path)
static void	main(java.lang.String[] args) Main method to create the class server that reads class files.
java.lang.String	toString()

Methods inherited from class psl.worklets.http.ClassServer

containsKey, get, put, run, shutdown

Methods inherited from class java.lang.Object

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

Field Detail

default_codebase

private java.lang.String default_codebase

aliases

private java.util.Vector aliases

DefaultServerPort

private static final int DefaultServerPort

See Also:

Constant Field Values

toString

private final java.lang.String toString

Constructor Detail

ClassFileServer

public ClassFileServer(int port,
                       java.lang.String codebase)
                throws java.io.IOException

Constructs a ClassFileServer.

Parameters:

port - the port to connect to this ClassFileServer

ClassFileServer

public ClassFileServer(int port,
                       java.lang.String codebase,
                       psl.worklets.WVM_SSLSocketFactory wvm_sf)
                throws java.io.IOException

ClassFileServer

public ClassFileServer(java.lang.String protocol,
                       java.lang.String host,
                       int port,
                       java.lang.String codebase,
                       psl.worklets.WVM_SSLSocketFactory wvm_sf)
                throws java.io.IOException

Method Detail

getWebPort

public int getWebPort()

getAliases

public java.util.Vector getAliases()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getBytes

public byte[] getBytes(java.lang.String path)
                throws java.io.IOException,
                       java.lang.ClassNotFoundException

Returns an array of bytes containing the bytecodes for the class represented by the argument path. The path is a dot separated class name with the ".class" extension removed.

Specified by:

getBytes in class ClassServer

Returns:

the bytecodes for the class

Throws:

java.lang.ClassNotFoundException - if the class corresponding to path could not be loaded.

java.io.IOException - if error occurs reading the class

classExtract

private byte[] classExtract(java.io.File f)
                     throws java.io.IOException

java.io.IOException

jarExtract

private byte[] jarExtract(java.io.File f,
                          java.lang.String path)
                   throws java.io.IOException,
                          java.util.zip.ZipException

java.io.IOException

java.util.zip.ZipException

findFile

private java.io.File findFile(java.lang.String rootPath,
                              java.lang.String path)

main

public static void main(java.lang.String[] args)

Main method to create the class server that reads class files. This takes two command line arguments, the port on which the server accepts requests and the root of the classpath. To start up the server:

java ClassFileServer

The codebase of an RMI server using this webserver would simply contain a URL with the host and port of the web server (if the webserver's classpath is the same as the RMI server's classpath):

java -Djava.rmi.server.codebase=http://zaphod:2001/ RMIServer

You can create your own class server inside your RMI server application instead of running one separately. In your server main simply create a ClassFileServer:

new ClassFileServer(port, classpath);