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XrdClClassicCopyJob.cc
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XrdClClassicCopyJob.cc
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//------------------------------------------------------------------------------
// Copyright (c) 2011-2014 by European Organization for Nuclear Research (CERN)
// Author: Lukasz Janyst <ljanyst@cern.ch>
//------------------------------------------------------------------------------
// This file is part of the XRootD software suite.
//
// XRootD is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// XRootD is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with XRootD. If not, see <http://www.gnu.org/licenses/>.
//
// In applying this licence, CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
//------------------------------------------------------------------------------
#include "XrdCl/XrdClClassicCopyJob.hh"
#include "XrdCl/XrdClConstants.hh"
#include "XrdCl/XrdClLog.hh"
#include "XrdCl/XrdClDefaultEnv.hh"
#include "XrdCl/XrdClFile.hh"
#include "XrdCl/XrdClMonitor.hh"
#include "XrdCl/XrdClUtils.hh"
#include "XrdCl/XrdClCheckSumManager.hh"
#include "XrdCks/XrdCksCalc.hh"
#include "XrdCl/XrdClUglyHacks.hh"
#include "XrdCl/XrdClRedirectorRegistry.hh"
#include "XrdCl/XrdClZipArchiveReader.hh"
#include "XrdCl/XrdClPostMaster.hh"
#include "XrdCl/XrdClJobManager.hh"
#include "XrdClXCpCtx.hh"
#include <memory>
#include <mutex>
#include <queue>
#include <algorithm>
#include <chrono>
#include <thread>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#if __cplusplus < 201103L
#include <time.h>
#endif
namespace
{
//----------------------------------------------------------------------------
//! Check sum helper for stdio
//----------------------------------------------------------------------------
class CheckSumHelper
{
public:
//------------------------------------------------------------------------
//! Constructor
//------------------------------------------------------------------------
CheckSumHelper( const std::string &name,
const std::string &ckSumType ):
pName( name ),
pCkSumType( ckSumType ),
pCksCalcObj( 0 )
{};
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
virtual ~CheckSumHelper()
{
delete pCksCalcObj;
}
//------------------------------------------------------------------------
//! Initialize
//------------------------------------------------------------------------
XrdCl::XRootDStatus Initialize()
{
using namespace XrdCl;
if( pCkSumType.empty() )
return XRootDStatus();
Log *log = DefaultEnv::GetLog();
CheckSumManager *cksMan = DefaultEnv::GetCheckSumManager();
if( !cksMan )
{
log->Error( UtilityMsg, "Unable to get the checksum manager" );
return XRootDStatus( stError, errInternal );
}
pCksCalcObj = cksMan->GetCalculator( pCkSumType );
if( !pCksCalcObj )
{
log->Error( UtilityMsg, "Unable to get a calculator for %s",
pCkSumType.c_str() );
return XRootDStatus( stError, errCheckSumError );
}
return XRootDStatus();
}
//------------------------------------------------------------------------
// Update the checksum
//------------------------------------------------------------------------
void Update( const void *buffer, uint32_t size )
{
if( pCksCalcObj )
pCksCalcObj->Update( (const char *)buffer, size );
}
//------------------------------------------------------------------------
// Get checksum
//------------------------------------------------------------------------
XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType )
{
using namespace XrdCl;
Log *log = DefaultEnv::GetLog();
//----------------------------------------------------------------------
// Sanity check
//----------------------------------------------------------------------
if( !pCksCalcObj )
{
log->Error( UtilityMsg, "Calculator for %s was not initialized",
pCkSumType.c_str() );
return XRootDStatus( stError, errCheckSumError );
}
int calcSize = 0;
std::string calcType = pCksCalcObj->Type( calcSize );
if( calcType != checkSumType )
{
log->Error( UtilityMsg, "Calculated checksum: %s, requested "
"checksum: %s", pCkSumType.c_str(),
checkSumType.c_str() );
return XRootDStatus( stError, errCheckSumError );
}
//----------------------------------------------------------------------
// Response
//----------------------------------------------------------------------
XrdCksData ckSum;
ckSum.Set( checkSumType.c_str() );
ckSum.Set( (void*)pCksCalcObj->Final(), calcSize );
char *cksBuffer = new char[265];
ckSum.Get( cksBuffer, 256 );
checkSum = checkSumType + ":";
checkSum += Utils::NormalizeChecksum( checkSumType, cksBuffer );
delete [] cksBuffer;
log->Dump( UtilityMsg, "Checksum for %s is: %s", pName.c_str(),
checkSum.c_str() );
return XrdCl::XRootDStatus();
}
private:
std::string pName;
std::string pCkSumType;
XrdCksCalc *pCksCalcObj;
};
//----------------------------------------------------------------------------
//! Abstract chunk source
//----------------------------------------------------------------------------
class Source
{
public:
//------------------------------------------------------------------------
// Destructor
//------------------------------------------------------------------------
Source( const std::string &checkSumType = "" ) : pCkSumHelper( 0 )
{
if( !checkSumType.empty() )
pCkSumHelper = new CheckSumHelper( "source", checkSumType );
};
virtual ~Source()
{
delete pCkSumHelper;
}
//------------------------------------------------------------------------
//! Initialize the source
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Initialize() = 0;
//------------------------------------------------------------------------
//! Get size
//------------------------------------------------------------------------
virtual int64_t GetSize() = 0;
//------------------------------------------------------------------------
//! Get a data chunk from the source
//!
//! @param ci chunk information
//! @return status of the operation
//! suContinue - there are some chunks left
//! suDone - no chunks left
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetChunk( XrdCl::ChunkInfo &ci ) = 0;
//------------------------------------------------------------------------
//! Get check sum
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType ) = 0;
protected:
CheckSumHelper *pCkSumHelper;
};
//----------------------------------------------------------------------------
//! Abstract chunk destination
//----------------------------------------------------------------------------
class Destination
{
public:
//------------------------------------------------------------------------
//! Constructor
//------------------------------------------------------------------------
Destination( const std::string &checkSumType = "" ):
pPosc( false ), pForce( false ), pCoerce( false ), pMakeDir( false ),
pCkSumHelper( 0 )
{
if( !checkSumType.empty() )
pCkSumHelper = new CheckSumHelper( "destination", checkSumType );
}
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
virtual ~Destination()
{
delete pCkSumHelper;
}
//------------------------------------------------------------------------
//! Initialize the destination
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Initialize() = 0;
//------------------------------------------------------------------------
//! Finalize the destination
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Finalize() = 0;
//------------------------------------------------------------------------
//! Put a data chunk at a destination
//!
//! @param ci chunk information
//! @return status of the operation
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus PutChunk( XrdCl::ChunkInfo &ci ) = 0;
//------------------------------------------------------------------------
//! Flush chunks that might have been queues
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Flush() = 0;
//------------------------------------------------------------------------
//! Get check sum
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType ) = 0;
//------------------------------------------------------------------------
//! Set POSC
//------------------------------------------------------------------------
void SetPOSC( bool posc )
{
pPosc = posc;
}
//------------------------------------------------------------------------
//! Set force
//------------------------------------------------------------------------
void SetForce( bool force )
{
pForce = force;
}
//------------------------------------------------------------------------
//! Set coerce
//------------------------------------------------------------------------
void SetCoerce( bool coerce )
{
pCoerce = coerce;
}
//------------------------------------------------------------------------
//! Set makedir
//------------------------------------------------------------------------
void SetMakeDir( bool makedir )
{
pMakeDir = makedir;
}
protected:
bool pPosc;
bool pForce;
bool pCoerce;
bool pMakeDir;
CheckSumHelper *pCkSumHelper;
};
//----------------------------------------------------------------------------
//! StdIn source
//----------------------------------------------------------------------------
class StdInSource: public Source
{
public:
//------------------------------------------------------------------------
//! Constructor
//------------------------------------------------------------------------
StdInSource( const std::string &ckSumType, uint32_t chunkSize ):
Source( ckSumType ),
pCurrentOffset(0),
pChunkSize( chunkSize )
{
}
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
virtual ~StdInSource()
{
}
//------------------------------------------------------------------------
//! Initialize the source
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Initialize()
{
if( pCkSumHelper )
return pCkSumHelper->Initialize();
return XrdCl::XRootDStatus();
}
//------------------------------------------------------------------------
//! Get size
//------------------------------------------------------------------------
virtual int64_t GetSize()
{
return -1;
}
//------------------------------------------------------------------------
//! Get a data chunk from the source
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetChunk( XrdCl::ChunkInfo &ci )
{
using namespace XrdCl;
Log *log = DefaultEnv::GetLog();
uint32_t toRead = pChunkSize;
char *buffer = new char[toRead];
int64_t bytesRead = 0;
uint32_t offset = 0;
while( toRead )
{
int64_t bRead = read( 0, buffer+offset, toRead );
if( bRead == -1 )
{
log->Debug( UtilityMsg, "Unable to read from stdin: %s",
strerror( errno ) );
delete [] buffer;
return XRootDStatus( stError, errOSError, errno );
}
if( bRead == 0 )
break;
bytesRead += bRead;
offset += bRead;
toRead -= bRead;
}
if( bytesRead == 0 )
{
delete [] buffer;
return XRootDStatus( stOK, suDone );
}
if( pCkSumHelper )
pCkSumHelper->Update( buffer, bytesRead );
ci.offset = pCurrentOffset;
ci.length = bytesRead;
ci.buffer = buffer;
pCurrentOffset += bytesRead;
return XRootDStatus( stOK, suContinue );
}
//------------------------------------------------------------------------
//! Get check sum
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType )
{
using namespace XrdCl;
if( pCkSumHelper )
return pCkSumHelper->GetCheckSum( checkSum, checkSumType );
return XRootDStatus( stError, errCheckSumError );
}
private:
StdInSource(const StdInSource &other);
StdInSource &operator = (const StdInSource &other);
uint64_t pCurrentOffset;
uint32_t pChunkSize;
};
//----------------------------------------------------------------------------
//! XRootDSource
//----------------------------------------------------------------------------
class XRootDSource: public Source
{
public:
//------------------------------------------------------------------------
//! Constructor
//------------------------------------------------------------------------
XRootDSource( const XrdCl::URL *url,
uint32_t chunkSize,
uint8_t parallelChunks,
const std::string &ckSumType ):
Source( ckSumType ),
pUrl( url ), pFile( new XrdCl::File() ), pSize( -1 ),
pCurrentOffset( 0 ), pChunkSize( chunkSize ),
pParallel( parallelChunks ),
pNbConn( 0 )
{
int val = XrdCl::DefaultSubStreamsPerChannel;
XrdCl::DefaultEnv::GetEnv()->GetInt( "SubStreamsPerChannel", val );
pMaxNbConn = val - 1; // account for the control stream
}
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
virtual ~XRootDSource()
{
CleanUpChunks();
if( pFile->IsOpen() )
XrdCl::XRootDStatus status = pFile->Close();
delete pFile;
}
//------------------------------------------------------------------------
//! Initialize the source
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Initialize()
{
using namespace XrdCl;
Log *log = DefaultEnv::GetLog();
log->Debug( UtilityMsg, "Opening %s for reading",
pUrl->GetURL().c_str() );
std::string value;
DefaultEnv::GetEnv()->GetString( "ReadRecovery", value );
pFile->SetProperty( "ReadRecovery", value );
XRootDStatus st = pFile->Open( pUrl->GetURL(), OpenFlags::Read );
if( !st.IsOK() )
return st;
StatInfo *statInfo;
st = pFile->Stat( false, statInfo );
if( !st.IsOK() )
return st;
pSize = statInfo->GetSize();
delete statInfo;
if( pUrl->IsLocalFile() && !pUrl->IsMetalink() && pCkSumHelper )
return pCkSumHelper->Initialize();
if( !pUrl->IsLocalFile() )
pFile->GetProperty( "DataServer", pDataServer );
SetOnConnectHandler( pFile );
return XRootDStatus();
}
//------------------------------------------------------------------------
//! Get size
//------------------------------------------------------------------------
virtual int64_t GetSize()
{
return pSize;
}
//------------------------------------------------------------------------
//! Get a data chunk from the source
//!
//! @param ci chunk information
//! @return status of the operation
//! suContinue - there are some chunks left
//! suDone - no chunks left
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetChunk( XrdCl::ChunkInfo &ci )
{
return GetChunkImpl( pFile, ci );
}
//------------------------------------------------------------------------
// Clean up the chunks that are flying
//------------------------------------------------------------------------
void CleanUpChunks()
{
while( !pChunks.empty() )
{
ChunkHandler *ch = pChunks.front();
pChunks.pop();
ch->sem->Wait();
delete [] (char *)ch->chunk.buffer;
delete ch;
}
}
//------------------------------------------------------------------------
// Get check sum
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType )
{
if( pUrl->IsMetalink() )
{
XrdCl::RedirectorRegistry ®istry = XrdCl::RedirectorRegistry::Instance();
XrdCl::VirtualRedirector *redirector = registry.Get( *pUrl );
checkSum = redirector->GetCheckSum( checkSumType );
if( !checkSum.empty() ) return XrdCl::XRootDStatus();
}
if( pUrl->IsLocalFile() )
{
if( pCkSumHelper )
return pCkSumHelper->GetCheckSum( checkSum, checkSumType );
else
return XrdCl::XRootDStatus( XrdCl::stError, XrdCl::errCheckSumError );
}
std::string dataServer; pFile->GetProperty( "DataServer", dataServer );
std::string lastUrl; pFile->GetProperty( "LastURL", lastUrl );
return XrdCl::Utils::GetRemoteCheckSum( checkSum, checkSumType,
dataServer, XrdCl::URL( lastUrl ).GetPath() );
}
private:
XRootDSource(const XRootDSource &other);
XRootDSource &operator = (const XRootDSource &other);
protected:
//------------------------------------------------------------------------
// Fill the queue with in-the-fly read requests
//------------------------------------------------------------------------
template<typename READER>
inline void FillQueue( READER *reader )
{
//----------------------------------------------------------------------
// Get the number of connected streams
//----------------------------------------------------------------------
uint16_t parallel = pParallel;
if( pNbConn < pMaxNbConn )
{
pNbConn = XrdCl::DefaultEnv::GetPostMaster()->
NbConnectedStrm( pDataServer );
}
if( pNbConn ) parallel *= pNbConn;
while( pChunks.size() < parallel && pCurrentOffset < pSize )
{
uint64_t chunkSize = pChunkSize;
if( pCurrentOffset + chunkSize > (uint64_t)pSize )
chunkSize = pSize - pCurrentOffset;
char *buffer = new char[chunkSize];
ChunkHandler *ch = new ChunkHandler;
ch->chunk.offset = pCurrentOffset;
ch->chunk.length = chunkSize;
ch->chunk.buffer = buffer;
ch->status = reader->Read( pCurrentOffset, chunkSize, buffer, ch );
pChunks.push( ch );
pCurrentOffset += chunkSize;
if( !ch->status.IsOK() )
{
ch->sem->Post();
break;
}
}
}
//------------------------------------------------------------------------
// Set the on-connect handler for data streams
//------------------------------------------------------------------------
template<typename READER>
void SetOnConnectHandler( READER *reader )
{
//----------------------------------------------------------------------------
// On-connect callback job, a lambda would be more elegant, but we still have
// to support SLC6
//----------------------------------------------------------------------------
struct OnConnJob : public XrdCl::Job
{
OnConnJob( XRootDSource *self, READER *reader ) : self( self ), reader( reader )
{
}
void Run( void* )
{
std::unique_lock<std::mutex> lck( self->pMtx );
// add new chunks to the queue
if( self->pNbConn < self->pMaxNbConn )
self->FillQueue( reader );
}
private:
XRootDSource *self;
READER *reader;
};
OnConnJob *callback = new OnConnJob( this, reader );
XrdCl::DefaultEnv::GetPostMaster()->SetOnConnectHandler( pDataServer, callback );
}
//------------------------------------------------------------------------
//! Get a data chunk from the source
//!
//! @param reader : reader to read data from
//! @param ci : chunk information
//! @return : status of the operation
//! suContinue - there are some chunks left
//! suDone - no chunks left
//------------------------------------------------------------------------
template<typename READER>
XrdCl::XRootDStatus GetChunkImpl( READER *reader, XrdCl::ChunkInfo &ci )
{
//----------------------------------------------------------------------
// Sanity check
//----------------------------------------------------------------------
using namespace XrdCl;
Log *log = DefaultEnv::GetLog();
if( !reader->IsOpen() )
return XRootDStatus( stError, errUninitialized );
//- ---------------------------------------------------------------------
// Fill the queue
//----------------------------------------------------------------------
std::unique_lock<std::mutex> lck( pMtx );
FillQueue( reader );
//----------------------------------------------------------------------
// Pick up a chunk from the front and wait for status
//----------------------------------------------------------------------
if( pChunks.empty() )
return XRootDStatus( stOK, suDone );
XRDCL_SMART_PTR_T<ChunkHandler> ch( pChunks.front() );
pChunks.pop();
lck.unlock();
ch->sem->Wait();
if( !ch->status.IsOK() )
{
log->Debug( UtilityMsg, "Unable read %d bytes at %ld from %s: %s",
ch->chunk.length, ch->chunk.offset,
pUrl->GetURL().c_str(), ch->status.ToStr().c_str() );
delete [] (char *)ch->chunk.buffer;
CleanUpChunks();
return ch->status;
}
ci = ch->chunk;
// if it is a local file update the checksum
if( pUrl->IsLocalFile() && !pUrl->IsMetalink() && pCkSumHelper )
pCkSumHelper->Update( ci.buffer, ci.length );
return XRootDStatus( stOK, suContinue );
}
//------------------------------------------------------------------------
// Asynchronous chunk handler
//------------------------------------------------------------------------
class ChunkHandler: public XrdCl::ResponseHandler
{
public:
ChunkHandler(): sem( new XrdCl::Semaphore(0) ) {}
virtual ~ChunkHandler() { delete sem; }
virtual void HandleResponse( XrdCl::XRootDStatus *statusval,
XrdCl::AnyObject *response )
{
this->status = *statusval;
delete statusval;
if( response )
{
XrdCl::ChunkInfo *resp = 0;
response->Get( resp );
if( resp )
chunk = *resp;
delete response;
}
sem->Post();
}
XrdCl::Semaphore *sem;
XrdCl::ChunkInfo chunk;
XrdCl::XRootDStatus status;
};
const XrdCl::URL *pUrl;
XrdCl::File *pFile;
int64_t pSize;
int64_t pCurrentOffset;
uint32_t pChunkSize;
uint16_t pParallel;
std::queue<ChunkHandler *> pChunks;
std::string pDataServer;
std::mutex pMtx;
uint16_t pNbConn;
uint16_t pMaxNbConn;
};
//----------------------------------------------------------------------------
//! XRootDSourceZip
//----------------------------------------------------------------------------
class XRootDSourceZip: public XRootDSource
{
public:
//------------------------------------------------------------------------
//! Constructor
//------------------------------------------------------------------------
XRootDSourceZip( const std::string &filename,
const XrdCl::URL *archive,
uint32_t chunkSize,
uint8_t parallelChunks,
const std::string &ckSumType ):
XRootDSource( archive, chunkSize, parallelChunks, ckSumType ),
pFilename( filename ),
pZipArchive( new XrdCl::ZipArchiveReader( *pFile ) )
{
}
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
~XRootDSourceZip()
{
XrdCl::XRootDStatus status = pZipArchive->Close();
delete pZipArchive;
}
//------------------------------------------------------------------------
//! Initialize the source
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Initialize()
{
using namespace XrdCl;
Log *log = DefaultEnv::GetLog();
log->Debug( UtilityMsg, "Opening %s for reading",
pUrl->GetURL().c_str() );
std::string value;
DefaultEnv::GetEnv()->GetString( "ReadRecovery", value );
pFile->SetProperty( "ReadRecovery", value );
XRootDStatus st = pZipArchive->Open( pUrl->GetURL() );
if( !st.IsOK() )
return st;
st = pZipArchive->Bind( pFilename );
if( !st.IsOK() )
return st;
uint64_t size = 0;
st = pZipArchive->GetSize( pFilename, size );
if( st.IsOK() )
pSize = size;
else
return st;
if( pUrl->IsLocalFile() && !pUrl->IsMetalink() && pCkSumHelper )
return pCkSumHelper->Initialize();
SetOnConnectHandler( pFile );
return XrdCl::XRootDStatus();
}
//------------------------------------------------------------------------
//! Get a data chunk from the source
//!
//! @param buffer buffer for the data
//! @param ci chunk information
//! @return status of the operation
//! suContinue - there are some chunks left
//! suDone - no chunks left
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetChunk( XrdCl::ChunkInfo &ci )
{
return GetChunkImpl( pZipArchive, ci );
}
//------------------------------------------------------------------------
// Get check sum
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType )
{
// The ZIP archive by default contains a ZCRC32 checksum
if( checkSumType == "zcrc32" )
return pZipArchive->ZCRC32( checkSum );
int useMtlnCksum = XrdCl::DefaultZipMtlnCksum;
XrdCl::Env *env = XrdCl::DefaultEnv::GetEnv();
env->GetInt( "ZipMtlnCksum", useMtlnCksum );
if( useMtlnCksum && pUrl->IsMetalink() )
{
XrdCl::RedirectorRegistry ®istry = XrdCl::RedirectorRegistry::Instance();
XrdCl::VirtualRedirector *redirector = registry.Get( *pUrl );
checkSum = redirector->GetCheckSum( checkSumType );
if( !checkSum.empty() ) return XrdCl::XRootDStatus();
}
// if it is a local file we can calculate the checksum ourself
if( pUrl->IsLocalFile() && !pUrl->IsMetalink() && pCkSumHelper )
return pCkSumHelper->GetCheckSum( checkSum, checkSumType );
// if it is a remote file other types of checksum are not supported
return XrdCl::XRootDStatus( XrdCl::stError, XrdCl::errNotSupported );
}
private:
XRootDSourceZip(const XRootDSource &other);
XRootDSourceZip &operator = (const XRootDSource &other);
const std::string pFilename;
XrdCl::ZipArchiveReader *pZipArchive;
};
//----------------------------------------------------------------------------
//! XRootDSourceDynamic
//----------------------------------------------------------------------------
class XRootDSourceDynamic: public Source
{
public:
//------------------------------------------------------------------------
//! Constructor
//------------------------------------------------------------------------
XRootDSourceDynamic( const XrdCl::URL *url,
uint32_t chunkSize,
const std::string &ckSumType ):
Source( ckSumType ),
pUrl( url ), pFile( new XrdCl::File() ), pCurrentOffset( 0 ),
pChunkSize( chunkSize ), pDone( false )
{
}
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
virtual ~XRootDSourceDynamic()
{
XrdCl::XRootDStatus status = pFile->Close();
delete pFile;
}
//------------------------------------------------------------------------
//! Initialize the source
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus Initialize()
{
using namespace XrdCl;
Log *log = DefaultEnv::GetLog();
log->Debug( UtilityMsg, "Opening %s for reading",
pUrl->GetURL().c_str() );
std::string value;
DefaultEnv::GetEnv()->GetString( "ReadRecovery", value );
pFile->SetProperty( "ReadRecovery", value );
XRootDStatus st = pFile->Open( pUrl->GetURL(), OpenFlags::Read );
if( !st.IsOK() )
return st;
if( pUrl->IsLocalFile() && !pUrl->IsMetalink() && pCkSumHelper )
return pCkSumHelper->Initialize();
return XRootDStatus();
}
//------------------------------------------------------------------------
//! Get size
//------------------------------------------------------------------------
virtual int64_t GetSize()
{
return -1;
}
//------------------------------------------------------------------------
//! Get a data chunk from the source
//!
//! @param buffer buffer for the data
//! @param ci chunk information
//! @return status of the operation
//! suContinue - there are some chunks left
//! suDone - no chunks left
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetChunk( XrdCl::ChunkInfo &ci )
{
//----------------------------------------------------------------------
// Sanity check
//----------------------------------------------------------------------
using namespace XrdCl;
if( !pFile->IsOpen() )
return XRootDStatus( stError, errUninitialized );
if( pDone )
return XRootDStatus( stOK, suDone );
//----------------------------------------------------------------------
// Fill the queue
//----------------------------------------------------------------------
char *buffer = new char[pChunkSize];
uint32_t bytesRead = 0;
XRootDStatus st = pFile->Read( pCurrentOffset, pChunkSize, buffer,
bytesRead );
if( !st.IsOK() )
{
delete [] buffer;
return st;
}
if( !bytesRead )
{
delete [] buffer;
return XRootDStatus( stOK, suDone );
}
if( bytesRead < pChunkSize )
pDone = true;
// if it is a local file update the checksum
if( pUrl->IsLocalFile() && !pUrl->IsMetalink() && pCkSumHelper )
pCkSumHelper->Update( buffer, bytesRead );
ci.offset = pCurrentOffset;
ci.length = bytesRead;
ci.buffer = buffer;
pCurrentOffset += bytesRead;
return XRootDStatus( stOK, suContinue );
}
//------------------------------------------------------------------------
// Get check sum
//------------------------------------------------------------------------
virtual XrdCl::XRootDStatus GetCheckSum( std::string &checkSum,
std::string &checkSumType )
{
if( pUrl->IsMetalink() )
{
XrdCl::RedirectorRegistry ®istry = XrdCl::RedirectorRegistry::Instance();
XrdCl::VirtualRedirector *redirector = registry.Get( *pUrl );
checkSum = redirector->GetCheckSum( checkSumType );
if( !checkSum.empty() ) return XrdCl::XRootDStatus();
}
if( pUrl->IsLocalFile() )
{
if( pCkSumHelper )
return pCkSumHelper->GetCheckSum( checkSum, checkSumType );
else