org.rhq.enterprise.communications.command.impl.stream.server
Class RemoteInputStreamCommandService

java.lang.Object
  org.rhq.enterprise.communications.command.server.CommandMBean
      org.rhq.enterprise.communications.command.server.CommandService
          org.rhq.enterprise.communications.command.impl.stream.server.RemoteInputStreamCommandService

All Implemented Interfaces:

MBeanRegistration, CommandExecutor, CommandServiceMBean

public class RemoteInputStreamCommandService
extends CommandService

Processes client requests to read remoted input streams.

Author:

John Mazzitelli

Constructor Summary

RemoteInputStreamCommandService()
Constructor for RemoteInputStreamCommandService.

Method Summary

Long	addInputStream(InputStream stream) Adds the given input stream to this service, effectively allowing remote clients to access this stream.
CommandResponse	execute(Command command, InputStream in, OutputStream out) Takes the remote stream access request, which has the NameBasedInvocation parameter, and convert that to a method call on the target stream (using reflection).
CommandType[]	getSupportedCommandTypes() Supports remote input stream commands.
boolean	removeInputStream(Long stream_id) Removes the stream associated with the given ID from this service, effectively making this stream inaccessible to remote clients.
void	startService() Configures the max idle time taken from this service's container configuration.
void	stopService() This is called when the MBean is being deregistered from the MBeanServer.

Methods inherited from class org.rhq.enterprise.communications.command.server.CommandService

getCommandServiceId, getConnector, getServiceContainer, getSubsystem, prepareRemoteInputStream, prepareRemoteOutputStream, preRegister, setServiceContainer

Methods inherited from class org.rhq.enterprise.communications.command.server.CommandMBean

getLog, getMBeanServer, getObjectName, postDeregister, postRegister, preDeregister

Methods inherited from class java.lang.Object

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

Constructor Detail

RemoteInputStreamCommandService

public RemoteInputStreamCommandService()

Constructor for RemoteInputStreamCommandService.

Method Detail

addInputStream

public Long addInputStream(InputStream stream)

Adds the given input stream to this service, effectively allowing remote clients to access this stream. The returned value is the ID that clients need to use to identify this stream as the one the client wants to access (see RemoteInputStreamCommand.setStreamId(Long)).

Parameters:

stream - the new stream to remote

Returns:

the stream's ID

removeInputStream

public boolean removeInputStream(Long stream_id)

Removes the stream associated with the given ID from this service, effectively making this stream inaccessible to remote clients. This method also ensures the input stream is closed.

Parameters:

stream_id - identifies the stream to remove

Returns:

true if the stream ID was valid and a stream was removed; false if the ID referred to a non-existent stream (which could mean either the stream was never registered at all or it was registered but has already been removed)

startService

public void startService()

Configures the max idle time taken from this service's container configuration.

Overrides:

startService in class CommandMBean

See Also:

CommandMBean.startService()

stopService

public void stopService()

Description copied from class: CommandMBean

This is called when the MBean is being deregistered from the MBeanServer. This implementation is a no-op that subclasses are free to override.

Overrides:

stopService in class CommandMBean

See Also:

CommandMBean.stopService()

execute

public CommandResponse execute(Command command,
                               InputStream in,
                               OutputStream out)

Takes the remote stream access request, which has the NameBasedInvocation parameter, and convert that to a method call on the target stream (using reflection). Then return the Object returned from the method call on the target stream in the response. Note that the invocation signature must match one of the methods on InputStream.

Parameters:

command - the command to execute

in - input stream should the executor want to get streamed data from the client

out - output stream should the executor want to stream data to the client

Returns:

the results of the command execution

See Also:

CommandExecutor.execute(Command, InputStream, OutputStream)

getSupportedCommandTypes

public CommandType[] getSupportedCommandTypes()

Supports remote input stream commands.

Returns:

array of supported command types

See Also:

CommandServiceMBean.getSupportedCommandTypes()