de.fhg.igd.semoa.shell
Class RemoteShellServer

java.lang.Object
  de.fhg.igd.semoa.service.AbstractService
      de.fhg.igd.semoa.net.AbstractServer
          de.fhg.igd.semoa.shell.RemoteShellServer

All Implemented Interfaces:

Runnable, Server, Service

Direct Known Subclasses:

SSLRemoteShellServer

public class RemoteShellServer

extends AbstractServer

Provides a simple server that listens on incoming network connections for incoming agents.

Version:

"$Id: RemoteShellServer.java 1913 2007-08-08 02:41:53Z jpeters $"

Author:

Jan Peters

Nested Class Summary

protected class

RemoteShellServer.Job An inner class that handles the connections.

Field Summary

private static String[]	DEPEND_ The dependencies to other objects in the global Environment.
static String	PROTOCOL The protocol name.

Fields inherited from class de.fhg.igd.semoa.net.AbstractServer

bad_, DEFAULT_CAPACITY, good_, MAX_CAPACITY, thread_

Fields inherited from class de.fhg.igd.semoa.service.AbstractService

REV_POSTFIX, REV_PREFIX

Fields inherited from interface de.fhg.igd.semoa.net.Server

BOUND_TO_PORT, ERROR, RUNNING, SHUTDOWN, UNDEFINED

Constructor Summary

RemoteShellServer()
Creates a new instance.

Method Summary

protected Runnable	createJob(Socket connection) Creates the job that handles the given connection.
String[]	dependencies() Returns the dependencies of this service as described in Service.
String	info() Returns the informative string which should describe the service's essence in a sentence.
String	protocol()
String	revision() Returns the revision number of this class as a string.

Methods inherited from class de.fhg.igd.semoa.net.AbstractServer

author, bad, createServerSocket, exceptionInfo, getCapacity, getMaximumSize, getPort, getServerState, good, handleConnection, isEnabled, localURL, rebind, run, serverStateChanged, setCapacity, setEnabled, setMaximumSize, setPort, shutdown, signal, toString

Methods inherited from class de.fhg.igd.semoa.service.AbstractService

checkDependencies, docs, doPrivileged, doPrivileged, getACC, getEnvironment, majorVersion, minorVersion

Methods inherited from class java.lang.Object

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

Field Detail

PROTOCOL

public static final String PROTOCOL

The protocol name.

See Also:

Constant Field Values

DEPEND_

private static final String[] DEPEND_

The dependencies to other objects in the global Environment.

Constructor Detail

RemoteShellServer

public RemoteShellServer()

Creates a new instance.

Method Detail

info

public String info()

Description copied from class: AbstractService

Returns the informative string which should describe the service's essence in a sentence.

Specified by:

info in interface Service

Specified by:

info in class AbstractService

Returns:

the String with the service's short description.

revision

public String revision()

Description copied from class: AbstractService

Returns the revision number of this class as a string. This class provides default implementations of methods majorVersion(), minorVersion based on the assumption that this method returns a revision string as generated by rcs(1) for the template "$Revision: 1.7 $/$Date: 2007-08-08 04:41:53 +0200 (Wed, 08 Aug 2007) $".

Specified by:

revision in class AbstractService

dependencies

public String[] dependencies()

Description copied from class: AbstractService

Returns the dependencies of this service as described in Service. This default implementation returns an array of length 0.

Specified by:

dependencies in interface Service

Overrides:

dependencies in class AbstractService

Returns:

An array of length 0.

protocol

public String protocol()

Specified by:

protocol in interface Server

Specified by:

protocol in class AbstractServer

Returns:

The protocol name; in this case "ssh".

createJob

protected Runnable createJob(Socket connection)

Creates the job that handles the given connection. Subclasses may create special job classes by overriding this method. A return value of null causes the connection to be closed without further processing. Jobs need not close the connection; this is handled by the calling run() method.

Overrides:

createJob in class AbstractServer

Returns:

The new job ready to be run, or null if the connection shall be closed immediately.