org.fabric3.binding.zeromq.runtime.context

Class ContextManagerImpl

java.lang.Object

org.fabric3.binding.zeromq.runtime.context.ContextManagerImpl

All Implemented Interfaces:

ContextManager

public class ContextManagerImpl
extends java.lang.Object
implements ContextManager

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ContextManagerImpl.ZMQLibraryInitializer Initializes the ZeroMQ library on Windows and Linux.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.fabric3.api.host.runtime.HostInfo	hostInfo

Constructor Summary

Constructors

Constructor and Description
ContextManagerImpl()

Method Summary

Methods

Modifier and Type	Method and Description
org.zeromq.ZMQ.Socket	createControlSocket() Creates and returns a connected socket for receiving control messages such as shutdown.
void	destroy() Closes the ZeroMQ context after all socket clients have released their locks.
org.zeromq.ZMQ.Context	getContext() Returns the active ZeroMQ context.
void	init()
protected void	loadLibrary(org.fabric3.api.host.runtime.HostInfo hostInfo) Uses the OperatingSystem information of the HostInfo to decide what library to load.
void	release(java.lang.String id) Releases a socket lease.
void	reserve(java.lang.String id) Reserves a socket lease.

Methods inherited from class java.lang.Object

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

Field Detail

hostInfo

protected org.fabric3.api.host.runtime.HostInfo hostInfo

Constructor Detail

ContextManagerImpl

public ContextManagerImpl()

Method Detail

getContext

public org.zeromq.ZMQ.Context getContext()

Description copied from interface: ContextManager

Returns the active ZeroMQ context.

Specified by:

getContext in interface ContextManager

Returns:

the active ZeroMQ context

createControlSocket

public org.zeromq.ZMQ.Socket createControlSocket()

Description copied from interface: ContextManager

Creates and returns a connected socket for receiving control messages such as shutdown. Clients are responsible for closing the socket when finished.

Specified by:

createControlSocket in interface ContextManager

Returns:

the control socket

reserve

public void reserve(java.lang.String id)

Description copied from interface: ContextManager

Reserves a socket lease. The context manager will not close the active ZeroMQ context on runtime shutdown until all leases have been released.

Specified by:

reserve in interface ContextManager

Parameters:

id - the unique client id

release

public void release(java.lang.String id)

Description copied from interface: ContextManager

Releases a socket lease.

Specified by:

release in interface ContextManager

Parameters:

id - the unique client id used to obtain the lease.

init

public void init()

destroy

public void destroy()

Closes the ZeroMQ context after all socket clients have released their locks. This guarantees the context will not be closed prior to all sockets being closed. Note that ZeroMQ requires sockets to be open, accessed and closed by the same thread.

loadLibrary

protected void loadLibrary(org.fabric3.api.host.runtime.HostInfo hostInfo)

Uses the OperatingSystem information of the HostInfo to decide what library to load. On Windows the library name is "libzmq". On Linux the library name is "zmq".

Parameters:

hostInfo - Based on the OperatingSystem member the needed Library will be loaded.