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Rock::HeaderUpdater Class Referenceabstract

#include <RockHeaderUpdater.h>

Inheritance diagram for Rock::HeaderUpdater:
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Collaboration diagram for Rock::HeaderUpdater:
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Classes

class  IoCbParams
 

Public Types

typedef CbcPointer< AsyncJob > Pointer
 

Public Member Functions

 HeaderUpdater (const Rock::SwapDir::Pointer &aStore, const Ipc::StoreMapUpdate &update)
 
virtual ~HeaderUpdater () override=default
 
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 Start (const Pointer &job)
 

Public Attributes

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

Protected Member Functions

virtual void start () override
 called by AsyncStart; do not call directly More...
 
virtual bool doneAll () const override
 whether positive goal has been reached More...
 
virtual void swanSong () override
 
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_CHILD (HeaderUpdater)
 
void startReading ()
 
void stopReading (const char *why)
 
void readMore (const char *why)
 
void noteRead (const IoCbParams result)
 
void noteDoneReading (int errflag)
 
void parseReadBytes ()
 
void startWriting ()
 
void noteDoneWriting (int errflag)
 

Private Attributes

Rock::SwapDir::Pointer store
 cache_dir where the entry is stored More...
 
Ipc::StoreMapUpdate update
 Ipc::StoreMap update reservation. More...
 
StoreIOState::Pointer reader
 reads old headers and old data More...
 
StoreIOState::Pointer writer
 writes new headers and old data More...
 
SBuf readerBuffer
 I/O buffer for a single read operation. More...
 
SBuf exchangeBuffer
 bytes read but not yet discarded or written More...
 
uint64_t bytesRead
 total entry bytes read from Store so far More...
 
size_t staleSwapHeaderSize
 stored size of the stale entry metadata More...
 
SlotId staleSplicingPointNext
 non-updatable old HTTP body suffix start More...
 

Static Private Attributes

static StoreIOState::STRCB NoteRead
 
static StoreIOState::STIOCB NoteDoneReading
 
static StoreIOState::STIOCB NoteDoneWriting
 

Detailed Description

Updates HTTP headers of a single Rock store entry:

  • reads old body data in the same slot as the last old headers slot, if any
  • writes new headers (1+ slots)
  • writes old data (0-2 slots)
  • chains the new entry prefix (1+ slots) to the old entry suffix (0+ slots)

Definition at line 26 of file RockHeaderUpdater.h.

Member Typedef Documentation

◆ Pointer

typedef CbcPointer<AsyncJob> AsyncJob::Pointer
inherited

Definition at line 34 of file AsyncJob.h.

Constructor & Destructor Documentation

◆ HeaderUpdater()

Rock::HeaderUpdater::HeaderUpdater ( const Rock::SwapDir::Pointer &  aStore,
const Ipc::StoreMapUpdate &  update 
)

Definition at line 20 of file RockHeaderUpdater.cc.

◆ ~HeaderUpdater()

virtual Rock::HeaderUpdater::~HeaderUpdater ( )
overridevirtualdefault

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(), AsyncJob::inCall, 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 ConnStateData, ClientHttpRequest, Adaptation::Icap::ModXact, Adaptation::Icap::ServiceRep, Adaptation::Icap::Xaction, Ipc::Forwarder, Ipc::Inquirer, and Ftp::Server.

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, and AsyncJob::inCall.

◆ CBDATA_CHILD()

Rock::HeaderUpdater::CBDATA_CHILD ( HeaderUpdater  )
private

◆ deleteThis()

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

Definition at line 50 of file AsyncJob.cc.

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

Referenced by ConnStateData::connStateClosed(), and AsyncJob::deleteThis().

◆ done()

bool AsyncJob::done ( ) const
protectedinherited

Definition at line 91 of file AsyncJob.cc.

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

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

◆ doneAll()

bool Rock::HeaderUpdater::doneAll ( ) const
overrideprotectedvirtual

Reimplemented from AsyncJob.

Definition at line 34 of file RockHeaderUpdater.cc.

References AsyncJob::doneAll().

◆ handleStopRequest()

void AsyncJob::handleStopRequest ( )
inlineinherited

Definition at line 71 of file AsyncJob.h.

References AsyncJob::mustStop().

◆ mustStop()

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

Definition at line 70 of file AsyncJob.cc.

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

Referenced by HttpStateData::abortAll(), AsyncJob::callException(), HttpStateData::continueAfterParsingHeader(), HttpStateData::drop1xx(), HttpStateData::handleMoreRequestBodyAvailable(), AsyncJob::handleStopRequest(), HttpStateData::httpStateConnClosed(), HttpStateData::httpTimeout(), HttpStateData::proceedAfter1xx(), ConnStateData::proxyProtocolError(), HttpStateData::readReply(), HttpStateData::start(), and HttpStateData::wroteLast().

◆ noteDoneReading()

void Rock::HeaderUpdater::noteDoneReading ( int  errflag)
private

Definition at line 153 of file RockHeaderUpdater.cc.

References debugs, and Must.

◆ noteDoneWriting()

void Rock::HeaderUpdater::noteDoneWriting ( int  errflag)
private

Definition at line 252 of file RockHeaderUpdater.cc.

References debugs, Must, Rock::IoState::splicingPoint, and Rock::IoState::writeableAnchor_.

◆ noteRead()

void Rock::HeaderUpdater::noteRead ( const IoCbParams  result)
private

Definition at line 111 of file RockHeaderUpdater.cc.

References Rock::HeaderUpdater::IoCbParams::buf, debugs, Must, and Rock::HeaderUpdater::IoCbParams::size.

◆ parseReadBytes()

void Rock::HeaderUpdater::parseReadBytes ( )
private

Definition at line 270 of file RockHeaderUpdater.cc.

References debugs, headersEnd(), Must, and Store::UnpackSwapMetaSize().

◆ readMore()

void Rock::HeaderUpdater::readMore ( const char *  why)
private

Definition at line 128 of file RockHeaderUpdater.cc.

References debugs, Must, and storeRead().

◆ start()

void Rock::HeaderUpdater::start ( )
overrideprotectedvirtual

Reimplemented from AsyncJob.

Definition at line 63 of file RockHeaderUpdater.cc.

References Must.

◆ 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().

◆ startReading()

void Rock::HeaderUpdater::startReading ( )
private

Definition at line 72 of file RockHeaderUpdater.cc.

◆ startWriting()

void Rock::HeaderUpdater::startWriting ( )
private

Definition at line 167 of file RockHeaderUpdater.cc.

References debugs, Must, Rock::IoState::staleSplicingPointNext, StoreIOState::wroteAll, and xfree.

◆ status()

const char * AsyncJob::status ( ) const
protectedvirtualinherited

for debugging, starts with space

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

Definition at line 167 of file AsyncJob.cc.

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

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

◆ stopReading()

void Rock::HeaderUpdater::stopReading ( const char *  why)
private

Definition at line 83 of file RockHeaderUpdater.cc.

References debugs, Must, StoreIOState::readerDone, Rock::IoState::splicingPoint, and Rock::IoState::staleSplicingPointNext.

◆ swanSong()

void Rock::HeaderUpdater::swanSong ( )
overrideprotectedvirtual

Reimplemented from AsyncJob.

Definition at line 40 of file RockHeaderUpdater.cc.

References StoreIOState::readerDone, AsyncJob::swanSong(), Rock::IoState::writeableAnchor_, and StoreIOState::writerGone.

◆ toCbdata()

virtual void * CbdataParent::toCbdata ( )
pure virtualinherited

Implemented in BodySink, ClientHttpRequest, and HttpStateData.

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

Member Data Documentation

◆ bytesRead

uint64_t Rock::HeaderUpdater::bytesRead
private

Definition at line 69 of file RockHeaderUpdater.h.

◆ exchangeBuffer

SBuf Rock::HeaderUpdater::exchangeBuffer
private

Definition at line 68 of file RockHeaderUpdater.h.

◆ id

const InstanceId<AsyncJob> AsyncJob::id
inherited

Definition at line 73 of file AsyncJob.h.

◆ inCall

AsyncCall::Pointer AsyncJob::inCall
protectedinherited

Definition at line 81 of file AsyncJob.h.

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

◆ NoteDoneReading

void Rock::HeaderUpdater::NoteDoneReading
staticprivate

Definition at line 48 of file RockHeaderUpdater.h.

◆ NoteDoneWriting

void Rock::HeaderUpdater::NoteDoneWriting
staticprivate

Definition at line 49 of file RockHeaderUpdater.h.

◆ NoteRead

void Rock::HeaderUpdater::NoteRead
staticprivate

Definition at line 47 of file RockHeaderUpdater.h.

◆ reader

StoreIOState::Pointer Rock::HeaderUpdater::reader
private

Definition at line 64 of file RockHeaderUpdater.h.

◆ readerBuffer

SBuf Rock::HeaderUpdater::readerBuffer
private

Definition at line 67 of file RockHeaderUpdater.h.

◆ staleSplicingPointNext

SlotId Rock::HeaderUpdater::staleSplicingPointNext
private

Definition at line 73 of file RockHeaderUpdater.h.

◆ staleSwapHeaderSize

size_t Rock::HeaderUpdater::staleSwapHeaderSize
private

Definition at line 71 of file RockHeaderUpdater.h.

◆ started_

bool AsyncJob::started_ = false
protectedinherited

Definition at line 83 of file AsyncJob.h.

Referenced by AsyncJob::~AsyncJob(), AsyncJob::callEnd(), and AsyncJob::Start().

◆ stopReason

const char* AsyncJob::stopReason
protectedinherited

Definition at line 79 of file AsyncJob.h.

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

◆ store

Rock::SwapDir::Pointer Rock::HeaderUpdater::store
private

Definition at line 61 of file RockHeaderUpdater.h.

◆ swanSang_

bool AsyncJob::swanSang_ = false
protectedinherited

Definition at line 84 of file AsyncJob.h.

Referenced by AsyncJob::~AsyncJob(), and AsyncJob::callEnd().

◆ typeName

const char* AsyncJob::typeName
protectedinherited

Definition at line 80 of file AsyncJob.h.

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

◆ update

Ipc::StoreMapUpdate Rock::HeaderUpdater::update
private

Definition at line 62 of file RockHeaderUpdater.h.

◆ writer

StoreIOState::Pointer Rock::HeaderUpdater::writer
private

Definition at line 65 of file RockHeaderUpdater.h.

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

 

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