Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | Private Member Functions | Private Attributes | List of all members
PeerPoolMgr Class Referenceabstract

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

#include <PeerPoolMgr.h>

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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...
 
virtual void * toCbdata ()=0
 

Static Public Member Functions

static void Checkpoint (const Pointer &mgr, const char *reason)
 
static Pointer Start (AsyncJob *job)
 starts a freshly created job (i.e., makes the job asynchronous) 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 handleSecureClosure (const CommCloseCbParams &params)
 called when the connection we are trying to secure is closed by a 3rd party 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...
 
const InstanceId< AsyncJob > id
 job identifier 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...
 
AsyncCall::Pointer opener
 whether we are opening a connection More...
 
AsyncCall::Pointer securer
 whether we are securing a connection More...
 
AsyncCall::Pointer closer
 monitors conn while we are securing it More...
 
unsigned int addrUsed
 counter for cycling through peer addresses More...
 

Detailed Description

Definition at line 21 of file PeerPoolMgr.h.

Member Typedef Documentation

typedef CbcPointer<PeerPoolMgr> PeerPoolMgr::Pointer

Definition at line 26 of file PeerPoolMgr.h.

Constructor & Destructor Documentation

PeerPoolMgr::PeerPoolMgr ( CachePeer *  aPeer)
explicit

Definition at line 43 of file PeerPoolMgr.cc.

PeerPoolMgr::~PeerPoolMgr ( )
virtual

Definition at line 53 of file PeerPoolMgr.cc.

References cbdataReferenceDone, and peer.

Member Function Documentation

void AsyncJob::callEnd ( )
virtualinherited

called right after the called job method

Reimplemented in Adaptation::Icap::Xaction.

Definition at line 136 of file AsyncJob.cc.

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

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

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

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

Definition at line 127 of file AsyncJob.cc.

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

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

void AsyncJob::callStart ( AsyncCall &  call)
inherited

called just before the called method

Definition at line 114 of file AsyncJob.cc.

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

bool AsyncJob::canBeCalled ( AsyncCall &  call) const
inherited

Definition at line 101 of file AsyncJob.cc.

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

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

Definition at line 261 of file PeerPoolMgr.cc.

References CallJobHere1, and checkpoint().

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

void PeerPoolMgr::checkpoint ( const char *  reason)
protected

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

Definition at line 243 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().

void PeerPoolMgr::closeOldConnections ( const int  howMany)
protected

Definition at line 236 of file PeerPoolMgr.cc.

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

Referenced by checkpoint().

void AsyncJob::deleteThis ( const char *  aReason)
protectedinherited

Definition at line 49 of file AsyncJob.cc.

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

Referenced by ConnStateData::connStateClosed().

bool AsyncJob::done ( ) const
protectedinherited

Definition at line 90 of file AsyncJob.cc.

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

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

bool PeerPoolMgr::doneAll ( ) const
protectedvirtual

Reimplemented from AsyncJob.

Definition at line 85 of file PeerPoolMgr.cc.

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

void PeerPoolMgr::handleOpenedConnection ( const CommConnectCbParams &  params)
protected

Definition at line 91 of file PeerPoolMgr.cc.

References asyncCall(), checkpoint(), Comm::Connection::close(), closer, comm_add_close_handler(), CommCommonCbParams::conn, debugs, Security::PeerOptions::encryptTransport, Comm::Connection::fd, CommCommonCbParams::flag, handleSecureClosure(), handleSecuredPeer(), JobCallback, Must, NULL, Comm::OK, opener, peer, peerConnectFailed(), peerConnectTimeout(), positiveTimeout(), pushNewConnection(), request, CachePeer::secure, securer, squid_curtime, AsyncJob::Start(), Comm::Connection::startTime(), and validPeer().

Referenced by openNewConnection().

void PeerPoolMgr::handleSecureClosure ( const CommCloseCbParams &  params)
protected

Definition at line 177 of file PeerPoolMgr.cc.

References AsyncCall::cancel(), Checkpoint(), closer, Must, NULL, and securer.

Referenced by handleOpenedConnection().

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

Definition at line 145 of file PeerPoolMgr.cc.

References AsyncCall::cancel(), checkpoint(), Comm::Connection::close(), closer, comm_remove_close_handler(), Security::EncryptorAnswer::conn, debugs, Security::EncryptorAnswer::error, Comm::Connection::fd, CbcPointer< Cbc >::get(), Must, NULL, pushNewConnection(), securer, and validPeer().

Referenced by handleOpenedConnection().

void AsyncJob::mustStop ( const char *  aReason)
protectedinherited

Definition at line 69 of file AsyncJob.cc.

References debugs, AsyncJob::inCall, Must, NULL, AsyncJob::stopReason, and AsyncJob::typeName.

Referenced by HttpStateData::abortAll(), AsyncJob::callException(), HttpStateData::continueAfterParsingHeader(), HttpStateData::handleMoreRequestBodyAvailable(), HttpStateData::httpStateConnClosed(), HttpStateData::httpTimeout(), Comm::ConnOpener::noteAbort(), ConnStateData::proxyProtocolError(), HttpStateData::readReply(), HttpStateData::start(), and HttpStateData::wroteLast().

void PeerPoolMgr::openNewConnection ( )
protected

Definition at line 189 of file PeerPoolMgr.cc.

References CachePeer::addresses, addrUsed, conn, debugs, fdUsageHigh(), GetMarkingsToServer(), getOutgoingAddress(), RefCount< C >::getRaw(), handleOpenedConnection(), CachePeer::http_port, JobCallback, Must, CachePeer::n_addresses, neighborUp(), NULL, opener, peer, peerCanOpenMore(), peerConnectTimeout(), Comm::Connection::peerType, Ip::Address::port(), Comm::Connection::remote, request, securer, Comm::Connection::setPeer(), shutting_down, CachePeer::standby, STANDBY_POOL, AsyncJob::Start(), and CachePeer::waitingForClose.

Referenced by checkpoint().

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

Definition at line 136 of file PeerPoolMgr.cc.

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

Referenced by handleOpenedConnection(), and handleSecuredPeer().

void PeerPoolMgr::start ( )
protectedvirtual

Reimplemented from AsyncJob.

Definition at line 59 of file PeerPoolMgr.cc.

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

AsyncJob::Pointer AsyncJob::Start ( AsyncJob *  job)
staticinherited

Definition at line 23 of file AsyncJob.cc.

References CallJobHere, and AsyncJob::start().

Referenced by Ftp::Server::AcceptCtrlConnection(), Ftp::Server::checkDataConnPre(), clientListenerConnectionOpened(), Ftp::Client::connectDataChannel(), FwdState::connectDone(), FwdState::connectStart(), TunnelStateData::connectToPeer(), Adaptation::Icap::Xaction::dnsLookupDone(), Log::TcpLogger::doConnect(), Ipc::Coordinator::handleCacheMgrRequest(), handleOpenedConnection(), Ipc::Coordinator::handleSnmpRequest(), httpAccept(), httpsAccept(), httpStart(), idnsInitVC(), Ftp::Gateway::listenForDataChannel(), Ftp::Server::listenForDataConnection(), Adaptation::Icap::Xaction::noteCommConnected(), Log::TcpLogger::Open(), openNewConnection(), peerProbeConnect(), Rock::SwapDir::rebuild(), Mgr::FunAction::respond(), Mgr::InfoAction::respond(), Ipc::SendMessage(), Mgr::Inquirer::sendResponse(), snmpConstructReponse(), SquidMain(), Ident::Start(), Adaptation::AccessCheck::Start(), CacheManager::Start(), Security::PeerConnector::startCertDownloading(), TunnelStateData::startConnecting(), Ftp::StartGateway(), Ftp::StartRelay(), PeerPoolMgrsRr::syncConfig(), and Rock::SwapDir::updateHeaders().

const char * AsyncJob::status ( ) const
protectedvirtualinherited

for debugging, starts with space

Reimplemented in Adaptation::Icap::ServiceRep, Adaptation::Icap::Xaction, Security::PeerConnector, Adaptation::Ecap::XactionRep, Adaptation::Initiate, Comm::TcpAcceptor, and Ipc::Inquirer.

Definition at line 159 of file AsyncJob.cc.

References MemBuf::append(), Packable::appendf(), buf, MemBuf::content(), NULL, MemBuf::reset(), AsyncJob::stopReason, and MemBuf::terminate().

Referenced by AsyncJob::callEnd(), AsyncJob::callStart(), Comm::TcpAcceptor::status(), and Adaptation::Initiate::status().

void PeerPoolMgr::swanSong ( )
protectedvirtual

Reimplemented from AsyncJob.

Definition at line 73 of file PeerPoolMgr.cc.

References AsyncJob::swanSong().

virtual void* CbdataParent::toCbdata ( )
pure virtualinherited

Implemented in ClientHttpRequest, HttpStateData, and BodySink.

Referenced by AsyncJob::callException(), and AsyncJob::callStart().

bool PeerPoolMgr::validPeer ( ) const
protected

Definition at line 79 of file PeerPoolMgr.cc.

References cbdataReferenceValid(), peer, CachePeer::pool, and CachePeer::standby.

Referenced by checkpoint(), doneAll(), handleOpenedConnection(), handleSecuredPeer(), and pushNewConnection().

Member Data Documentation

unsigned int PeerPoolMgr::addrUsed
private

Definition at line 69 of file PeerPoolMgr.h.

Referenced by openNewConnection().

AsyncCall::Pointer PeerPoolMgr::closer
private

Definition at line 68 of file PeerPoolMgr.h.

Referenced by handleOpenedConnection(), handleSecureClosure(), and handleSecuredPeer().

const InstanceId<AsyncJob> AsyncJob::id
protectedinherited

Definition at line 72 of file AsyncJob.h.

AsyncCall::Pointer AsyncJob::inCall
protectedinherited

Definition at line 71 of file AsyncJob.h.

Referenced by AsyncJob::callEnd(), AsyncJob::callStart(), AsyncJob::canBeCalled(), AsyncJob::deleteThis(), and AsyncJob::mustStop().

AsyncCall::Pointer PeerPoolMgr::opener
private

Definition at line 66 of file PeerPoolMgr.h.

Referenced by handleOpenedConnection(), and openNewConnection().

CachePeer* PeerPoolMgr::peer
private

Definition at line 64 of file PeerPoolMgr.h.

Referenced by checkpoint(), closeOldConnections(), doneAll(), handleOpenedConnection(), openNewConnection(), pushNewConnection(), start(), validPeer(), and ~PeerPoolMgr().

RefCount<HttpRequest> PeerPoolMgr::request
private

Definition at line 65 of file PeerPoolMgr.h.

Referenced by handleOpenedConnection(), openNewConnection(), and start().

AsyncCall::Pointer PeerPoolMgr::securer
private

Definition at line 67 of file PeerPoolMgr.h.

Referenced by handleOpenedConnection(), handleSecureClosure(), handleSecuredPeer(), and openNewConnection().

const char* AsyncJob::stopReason
protectedinherited

Definition at line 69 of file AsyncJob.h.

Referenced by AsyncJob::deleteThis(), AsyncJob::done(), AsyncJob::mustStop(), and AsyncJob::status().

const char* AsyncJob::typeName
protectedinherited

Definition at line 70 of file AsyncJob.h.

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

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

 

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