samchon::protocol::master Namespace Reference

Package for external system, within the framework of master. More...

Classes
class	DistributedClient
	A network driver for a distributed client. More...
class	DistributedClientArray
	An array of DistributedClient(s). More...
class	DistributedClientArrayMediator
	A mediator of distributed system between master and slaves. More...
class	DistributedClientServerMediator
	A distributed slave client for mediation. More...
class	DistributedServer
	A network driver for a distributed server. More...
class	DistributedServerArray
	An array of DistributedServer(s). More...
class	DistributedServerArrayMediator
	A mediator of distributed system between master and slaves. More...
class	DistributedSlaveServerMediator
	A distributed slave server for mediation. More...
class	DistributedSlaveSystemMediator
	A distributed slave system for mediation. More...
class	DistributedSystem
	A network driver for a distributed system. More...
class	DistributedSystemArray
	An array of distributed system drivers. More...
class	DistributedSystemArrayMediator
	A mediator of distributed system between master and slaves. More...
class	DistributedSystemRole
	A role of distributed processing system. More...
class	DSInvokeHistory
	A reported history of an Invoke message. More...
class	DSInvokeHistoryArray
	An array of PRInvokeHistory. More...
class	ParallelClient
	A network driver for a parallel client. More...
class	ParallelClientArray
	An array of ParallelClient(s). More...
class	ParallelClientArrayMediator
	A mediator of parallel system between master and slaves. More...
class	ParallelServer
	A network driver for a parallel server. More...
class	ParallelServerArray
	An array of ParallelServer(s). More...
class	ParallelServerArrayMediator
	A mediator of parallel system between master and slaves. More...
class	ParallelSlaveClientMediator
	A parallel slave client for mediation. More...
class	ParallelSlaveServerMediator
	A parallel slave server for mediation. More...
class	ParallelSlaveSystemMediator
	A parallel slave system for mediation. More...
class	ParallelSystem
	A network driver for a parallel system. More...
class	ParallelSystemArray
	An array of parallel system drivers. More...
class	ParallelSystemArrayMediator
	A mediator of parallel system between master and slaves. More...
class	PRInvokeHistory
	A reported history of an Invoke message. More...
class	PRInvokeHistoryArray
	An array of PRInvokeHistory. More...
class	PRMasterHistory
	A history log of an Invoke message on a master. More...
class	PRMasterHistoryArray
	An array of invoke histories of master. More...

Detailed Description

Package for external system, within the framework of master.

In master package, provides distributed and parallel processing system modules which are in framework of master. With classes in master package, you can realize any type of distributed or parallel processing system in master side, even how enormouse scale those have.

Distributed Processing System

A distributed processing system of master, a master (master::DistributedSystemArray) allocates roles (master::DistributedSystemRole) to systems (master::DistributedSystem). User does not consider about which roles are allocated to which systems. User just accesses to a role and send or reply message from those roles.

• It's the proxy pattern have mentioned in external system

  ExternalSystem objects are managed by ExternalSystemArray and the ExternalSystemArray can access to a role belongs to a system directly. When you send an Invoke message to ExternalSystemArray, the ExternalSystemArray finds matched ExternalSystemRole and the ExternalSystemRole shifts the network I/O responsibility to belonged ExternalSystem. This relationship called "Proxy Pattern". By the pattern, "Proxy", you can concentrate on roles irrespective of where each role is belonged to.

  • ExternalSystemArray::sendData() -> ExternalSystemRole(Proxy)::sendData() -> ExternalSystem::sendData()
  • ExternalSystem::replyData() -> ExternalSystemRole(Proxy)::replyData()

However, unlike the case of managing roles from ExternalSystemArray, in DistributedSystemArray, roles can be allocated in multiple systems duplicately. And the roles can be moved to another systems. Those management and allocation of roles are determined by estimation of performance of each system, and required performance of each role.

Parallel Processing System

Unlike distributed processing system, the parallel processing system is not complicate. It has very simple logic. About requested processes, master(master::ParallelSystemArray) allocates each process to each slave system by their own performance index have estimated.

Author

Jeongho Nam http://samchon.org