Maintains an fixed-size "standby" PconnPool for a single CachePeer. More...

#include <PeerPoolMgr.h>

Inheritance diagram for PeerPoolMgr:

Collaboration diagram for PeerPoolMgr:

[legend]

Public Types
typedef CbcPointer< PeerPoolMgr >	Pointer

Public Member Functions
	PeerPoolMgr (CachePeer *aPeer)

virtual	~PeerPoolMgr ()

bool	canBeCalled (AsyncCall &call) const
	whether we can be called More...

void	callStart (AsyncCall &call)

virtual void	callEnd ()
	called right after the called job method More...

virtual void	callException (const std::exception &e)
	called when the job throws during an async call More...

void	handleStopRequest ()
	process external request to terminate now (i.e. during this async call) More...

virtual void *	toCbdata ()=0

Static Public Member Functions
static void	Checkpoint (const Pointer &mgr, const char *reason)

static void	Start (const Pointer &job)

Public Attributes
const InstanceId< AsyncJob >	id
	job identifier More...

Protected Member Functions
virtual void	start ()
	called by AsyncStart; do not call directly More...

virtual void	swanSong ()

virtual bool	doneAll () const
	whether positive goal has been reached More...

bool	validPeer () const
	whether the peer is still out there and in a valid state we can safely use More...

void	checkpoint (const char *reason)

void	openNewConnection ()
	starts the process of opening a new standby connection (if possible) More...

void	closeOldConnections (const int howMany)
	closes 'howMany' standby connections More...

void	handleOpenedConnection (const CommConnectCbParams &params)
	Comm::ConnOpener calls this when done opening a connection for us. More...

void	handleSecuredPeer (Security::EncryptorAnswer &answer)
	Security::PeerConnector callback. More...

void	pushNewConnection (const Comm::ConnectionPointer &conn)
	the final step in connection opening (and, optionally, securing) sequence More...

void	deleteThis (const char *aReason)

void	mustStop (const char *aReason)

bool	done () const
	the job is destroyed in callEnd() when done() More...

virtual const char *	status () const
	internal cleanup; do not call directly More...

Protected Attributes
const char *	stopReason
	reason for forcing done() to be true More...

const char *	typeName
	kid (leaf) class name, for debugging More...

AsyncCall::Pointer	inCall
	the asynchronous call being handled, if any More...

bool	started_ = false
	Start() has finished successfully. More...

bool	swanSang_ = false
	swanSong() was called More...

Private Member Functions
	CBDATA_CLASS (PeerPoolMgr)

Private Attributes
CachePeer *	peer
	the owner of the pool we manage More...

RefCount< HttpRequest >	request
	fake HTTP request for conn opening code More...

JobWait< Comm::ConnOpener >	transportWait
	waits for a transport connection to the peer to be established/opened More...

JobWait< Security::BlindPeerConnector >	encryptionWait
	waits for the established transport connection to be secured/encrypted More...

unsigned int	addrUsed
	counter for cycling through peer addresses More...

Detailed Description

Definition at line 22 of file PeerPoolMgr.h.

Member Typedef Documentation

◆ Pointer

typedef CbcPointer<PeerPoolMgr> PeerPoolMgr::Pointer

Definition at line 27 of file PeerPoolMgr.h.

Constructor & Destructor Documentation

◆ PeerPoolMgr()

PeerPoolMgr::PeerPoolMgr ( CachePeer * aPeer )

explicit

Definition at line 43 of file PeerPoolMgr.cc.

◆ ~PeerPoolMgr()

PeerPoolMgr::~PeerPoolMgr ( )

virtual

Definition at line 52 of file PeerPoolMgr.cc.

References cbdataReferenceDone, and peer.

Member Function Documentation

◆ callEnd()

void AsyncJob::callEnd ( )

virtualinherited

called right after the called job method

Reimplemented in Adaptation::Icap::Xaction.

Definition at line 137 of file AsyncJob.cc.

References assert, AsyncCall::debugLevel, debugs, AsyncCall::debugSection, AsyncJob::done(), HERE(), AsyncJob::inCall, NULL, AsyncJob::started_, AsyncJob::status(), AsyncJob::swanSang_, AsyncJob::swanSong(), and AsyncJob::typeName.

Referenced by Adaptation::Icap::Xaction::callEnd(), and AsyncJob::deleteThis().

◆ callException()

void AsyncJob::callException ( const std::exception & e )

virtualinherited

Reimplemented in ClientHttpRequest, Ftp::Server, Ipc::Inquirer, Ipc::Forwarder, Adaptation::Icap::Xaction, Adaptation::Icap::ServiceRep, Adaptation::Icap::ModXact, and ConnStateData.

Definition at line 128 of file AsyncJob.cc.

References cbdataReferenceValid(), debugs, Must, AsyncJob::mustStop(), and CbdataParent::toCbdata().

Referenced by ConnStateData::callException(), Adaptation::Icap::Xaction::callException(), Ipc::Forwarder::callException(), Ipc::Inquirer::callException(), and Ftp::Server::callException().

◆ callStart()

void AsyncJob::callStart ( AsyncCall & call )

inherited

called just before the called method

Definition at line 115 of file AsyncJob.cc.

References cbdataReferenceValid(), AsyncCall::debugLevel, debugs, AsyncCall::debugSection, AsyncJob::inCall, Must, AsyncJob::status(), CbdataParent::toCbdata(), and AsyncJob::typeName.

◆ canBeCalled()

bool AsyncJob::canBeCalled ( AsyncCall & call ) const

inherited

Definition at line 102 of file AsyncJob.cc.

References AsyncCall::cancel(), debugs, HERE(), AsyncJob::inCall, and NULL.

◆ CBDATA_CLASS()

PeerPoolMgr::CBDATA_CLASS ( PeerPoolMgr )

private

◆ checkpoint()

void PeerPoolMgr::checkpoint ( const char * reason )

protected

Starts new connection, or closes the excess connections according pool configuration

Definition at line 224 of file PeerPoolMgr.cc.

References closeOldConnections(), PconnPool::count(), debugs, CachePeer::limit, openNewConnection(), peer, CachePeer::pool, CachePeer::standby, and validPeer().

Referenced by Checkpoint(), handleOpenedConnection(), handleSecuredPeer(), and start().

◆ Checkpoint()

void PeerPoolMgr::Checkpoint	(	const Pointer &	mgr,
		const char *	reason
	)

static

Definition at line 242 of file PeerPoolMgr.cc.

References CallJobHere1, and checkpoint().

Referenced by CachePeer::~CachePeer(), PconnPool::notifyManager(), peerAlive(), peerConnClosed(), and peerDNSConfigure().

◆ closeOldConnections()

void PeerPoolMgr::closeOldConnections ( const int howMany )

protected

Definition at line 217 of file PeerPoolMgr.cc.

References PconnPool::closeN(), debugs, peer, CachePeer::pool, and CachePeer::standby.

Referenced by checkpoint().

◆ deleteThis()

void AsyncJob::deleteThis ( const char * aReason )

protectedinherited

Definition at line 50 of file AsyncJob.cc.

References asyncCall(), AsyncJob::callEnd(), debugs, AsyncJob::inCall, JobMemFun(), Must, NULL, AsyncJob::stopReason, and AsyncJob::typeName.

Referenced by ConnStateData::connStateClosed().

◆ done()

bool AsyncJob::done ( ) const

protectedinherited

Definition at line 91 of file AsyncJob.cc.

References AsyncJob::doneAll(), NULL, and AsyncJob::stopReason.

Referenced by AsyncJob::callEnd(), HappyConnOpener::checkForNewConnection(), and Downloader::downloadFinished().

◆ doneAll()

bool PeerPoolMgr::doneAll ( ) const

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 84 of file PeerPoolMgr.cc.

References AsyncJob::doneAll(), CachePeer::limit, peer, CachePeer::standby, and validPeer().

◆ handleOpenedConnection()

void PeerPoolMgr::handleOpenedConnection ( const CommConnectCbParams & params )

protected

Definition at line 90 of file PeerPoolMgr.cc.

References asyncCall(), checkpoint(), Comm::Connection::close(), CommCommonCbParams::conn, CachePeer::connectTimeout(), debugs, encryptionWait, Security::PeerOptions::encryptTransport, CommCommonCbParams::flag, handleSecuredPeer(), Must, NULL, Comm::OK, peer, peerConnectFailed(), positiveTimeout(), pushNewConnection(), request, CachePeer::secure, squid_curtime, JobWait< Job >::start(), Comm::Connection::startTime(), transportWait, and validPeer().

Referenced by openNewConnection().

◆ handleSecuredPeer()

void PeerPoolMgr::handleSecuredPeer ( Security::EncryptorAnswer & answer )

protected

Definition at line 137 of file PeerPoolMgr.cc.

References assert, checkpoint(), Comm::Connection::close(), Security::EncryptorAnswer::conn, debugs, encryptionWait, Security::EncryptorAnswer::error, Comm::Connection::fd, fd_table, CbcPointer< Cbc >::get(), Comm::Connection::isOpen(), Comm::Connection::noteClosure(), NULL, pushNewConnection(), Security::EncryptorAnswer::tunneled, and validPeer().

Referenced by handleOpenedConnection().

◆ handleStopRequest()

void AsyncJob::handleStopRequest ( )

inlineinherited

Definition at line 71 of file AsyncJob.h.

References AsyncJob::mustStop().

◆ mustStop()

void AsyncJob::mustStop ( const char * aReason )

protectedinherited

◆ openNewConnection()

void PeerPoolMgr::openNewConnection ( )

protected

Definition at line 170 of file PeerPoolMgr.cc.

References CachePeer::addresses, addrUsed, conn, CachePeer::connectTimeout(), debugs, encryptionWait, fdUsageHigh(), GetMarkingsToServer(), getOutgoingAddress(), RefCount< C >::getRaw(), handleOpenedConnection(), CachePeer::http_port, JobCallback, Must, CachePeer::n_addresses, neighborUp(), peer, peerCanOpenMore(), request, shutting_down, CachePeer::standby, STANDBY_POOL, JobWait< Job >::start(), transportWait, and CachePeer::waitingForClose.

Referenced by checkpoint().

◆ pushNewConnection()

void PeerPoolMgr::pushNewConnection ( const Comm::ConnectionPointer & conn )

protected

Definition at line 128 of file PeerPoolMgr.cc.

References conn, Comm::IsConnOpen(), Must, NULL, peer, CachePeer::pool, PconnPool::push(), CachePeer::standby, and validPeer().

Referenced by handleOpenedConnection(), and handleSecuredPeer().

◆ start()

void PeerPoolMgr::start ( )

protectedvirtual

Reimplemented from AsyncJob.

Definition at line 58 of file PeerPoolMgr.cc.

References checkpoint(), AnyP::Uri::host(), CachePeer::host, XactionInitiator::initPeerPool, Http::METHOD_OPTIONS, peer, AnyP::PROTO_HTTP, request, AsyncJob::start(), and HttpRequest::url.

◆ Start()

void AsyncJob::Start ( const Pointer & job )

staticinherited

Promises to start the configured job (eventually). The job is deemed to be running asynchronously beyond this point, so the caller should only access the job object via AsyncCalls rather than directly.

swanSong() is only called for jobs for which this method has returned successfully (i.e. without throwing).

Definition at line 24 of file AsyncJob.cc.

References CallJobHere, AsyncJob::start(), and AsyncJob::started_.

Referenced by Ftp::Server::AcceptCtrlConnection(), clientListenerConnectionOpened(), Ipc::Coordinator::handleCacheMgrRequest(), Ipc::Coordinator::handleSnmpRequest(), httpAccept(), httpsAccept(), httpStart(), idnsInitVC(), Ftp::Gateway::listenForDataChannel(), Ftp::Server::listenForDataConnection(), Log::TcpLogger::Open(), peerProbeConnect(), Mgr::FunAction::respond(), Mgr::InfoAction::respond(), Ipc::SendMessage(), Mgr::Inquirer::sendResponse(), snmpConstructReponse(), SquidMain(), CacheManager::start(), Adaptation::AccessCheck::Start(), Rock::Rebuild::Start(), JobWaitBase::start_(), BodyPipe::startAutoConsumptionIfNeeded(), Ftp::StartGateway(), Ftp::StartRelay(), PeerPoolMgrsRr::syncConfig(), and Rock::SwapDir::updateHeaders().