CODEX_APSS::MessageDeliverer Class Reference

Helper CODEX_Events::Activity for sending messages to servers. More...

#include <MessageDeliverer.h>

Inheritance diagram for CODEX_APSS::MessageDeliverer:

[legend]Collaboration diagram for CODEX_APSS::MessageDeliverer:

[legend]List of all members.

Public Member Functions
	MessageDeliverer (CODEX_Events::DeadPileType &deadPile, CODEX_Events::QType &eventQueue, CODEX_Server::ServerResponseHandler *responder, CODEX_Server::BroadcastRequestHandler *broadcaster)
	Create a MessageDeliverer.
virtual	~MessageDeliverer ()
	Virtual destructor.
void	sendTo (unsigned int server, const CODEX_Quorum::Message &message)
	Send a message to a server.
void	broadcast (const CODEX_Quorum::Message &message, CODEX_Quorum::ResponseCallback *cb)
	Broadcast a message to the CODEX_Quorum::QuorumSystem.
virtual bool	handler (EventAck &event)
	The base class is responsible for handling acknowledgements, which are relevant to whether the Activity is ready for deletion.
Protected Member Functions
void	sendEvent (EventBase *event, Activity *source, bool failure=false)
void	enableTerminate ()
	This method should be called when an Activity has received a CloseEvent or other indicator that it is no longer needed.
Protected Attributes
DeadPileType &	m_deadPile
	The pile of Activity%s to be garbage-collected.
QType &	m_queue
	The event queue.

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Detailed Description

Helper CODEX_Events::Activity for sending messages to servers.

Since a number of classes need to emit messages, yet are not CODEX_Events::Activitys, this class provides an interface for generating message events.

Definition at line 35 of file MessageDeliverer.h.

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Member Function Documentation

void MessageDeliverer::broadcast (  const CODEX_Quorum::Message &  message, CODEX_Quorum::ResponseCallback *  cb )

Broadcast a message to the CODEX_Quorum::QuorumSystem. This method generated a CODEX_Server::BroadcastRequestEvent. Parameters: message  The message to send. cb  If not 0, the callback to handle responses. Ownership of the callback is taken over by the CODEX_Quorum::ResponseTracker. Definition at line 52 of file MessageDeliverer.cc. References CODEX_Events::Activity::sendEvent(). Referenced by CODEX_APSS::StateInfo::broadcast().

void Activity::enableTerminate (   )  [protected, inherited]

This method should be called when an Activity has received a CloseEvent or other indicator that it is no longer needed. Actual termination will not occur until there are no remaining events outstanding (unacknowledged). Definition at line 63 of file Activity.cc. Referenced by CODEX_KeyService::ClientActivity::handler(), and CODEX_KeyService::ClientActivity::processRequest().

bool Activity::handler (  EventAck &  event  )  [virtual, inherited]

The base class is responsible for handling acknowledgements, which are relevant to whether the Activity is ready for deletion. If a derived class reimpliments this method, it must call this version explicitly. Definition at line 39 of file Activity.cc. Referenced by CODEX_Events::EventAck::handle(), and CODEX_KeyService::ClientActivity::handler().

void Activity::sendEvent (  EventBase *  event, Activity *  source, bool  failure = false )  [protected, inherited]

Parameters: event  New event to be added to the queue source  Source of event just handled, to which an acknowledgement should be sent. This is accessed by the method EventBase::source(). failure  Is the acknowledgment a negative ack? Definition at line 49 of file Activity.cc. References CODEX_Events::Activity::m_queue. Referenced by CODEX_APSS::InitActivity::addEvidence(), broadcast(), CODEX_KeyService::ClientActivity::close(), CODEX_Server::UnicastRequestHandler::handler(), CODEX_Server::ShareLabelChallengeHandler::handler(), CODEX_Server::ServerResponseHandler::handler(), CODEX_Server::QuorumBuilderAct::handler(), CODEX_APSS::MessageVerifier::handler(), CODEX_APSS::MessageProcessor::handler(), CODEX_APSS::InitActivity::handler(), CODEX_KeyService::DelegateResponseVerifier::handler(), CODEX_KeyService::DelegateRequestDistributor::handler(), CODEX_KeyService::ClientResponseSigner::handler(), CODEX_KeyService::ClientMessageVerifier::handler(), CODEX_KeyService::ClientMessageSigner::handler(), CODEX_KeyService::ClientMessageAbsorber::handler(), CODEX_KeyService::ClientActivity::handler(), CODEX_Server::BroadcastRequestHandler::handler(), CODEX_KeyService::VerifyWriteCallback::operator()(), CODEX_KeyService::SignWriteCallback::operator()(), CODEX_KeyService::SignReadCallback::operator()(), CODEX_KeyService::SignCreateCallback::operator()(), CODEX_APSS::MessageParser::operator()(), CODEX_KeyService::ClientWriteCallback::operator()(), CODEX_KeyService::ClientResponseParser::operator()(), CODEX_KeyService::ClientReadCallback::operator()(), CODEX_KeyService::ClientMessageParser::operator()(), CODEX_KeyService::ClientCreateCallback::operator()(), CODEX_KeyService::ClientActivity::processRequest(), CODEX_Server::QuorumBuilderAct::QuorumBuilderAct(), sendTo(), CODEX_Server::ShareLabelChallengeHandler::ShareLabelChallengeHandler(), and CODEX_APSS::TriggerActivity::TriggerActivity().

void MessageDeliverer::sendTo (  unsigned int  server, const CODEX_Quorum::Message &  message )

Send a message to a server. This method generates a CODEX_Server::ServerResponseEvent. Parameters: server  The server to contact. message  The message to send. Definition at line 40 of file MessageDeliverer.cc. References CODEX_Events::Activity::sendEvent(). Referenced by CODEX_APSS::StateInfo::sendTo().

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The documentation for this class was generated from the following files:

• MessageDeliverer.h
• MessageDeliverer.cc

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