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XrdClFileStateHandler.cc
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XrdClFileStateHandler.cc
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//------------------------------------------------------------------------------
// Copyright (c) 2011-2012 by European Organization for Nuclear Research (CERN)
// Author: Lukasz Janyst <ljanyst@cern.ch>
//------------------------------------------------------------------------------
// 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/>.
//------------------------------------------------------------------------------
#include "XrdCl/XrdClFileStateHandler.hh"
#include "XrdCl/XrdClURL.hh"
#include "XrdCl/XrdClLog.hh"
#include "XrdCl/XrdClStatus.hh"
#include "XrdCl/XrdClDefaultEnv.hh"
#include "XrdCl/XrdClForkHandler.hh"
#include "XrdCl/XrdClConstants.hh"
#include "XrdCl/XrdClMessageUtils.hh"
#include "XrdCl/XrdClXRootDTransport.hh"
#include "XrdCl/XrdClXRootDResponses.hh"
#include "XrdCl/XrdClMonitor.hh"
#include "XrdCl/XrdClFileTimer.hh"
#include "XrdCl/XrdClResponseJob.hh"
#include "XrdCl/XrdClJobManager.hh"
#include "XrdCl/XrdClUglyHacks.hh"
#include <sstream>
#include <memory>
#include <sys/time.h>
namespace
{
//----------------------------------------------------------------------------
// Object that does things to the FileStateHandler when kXR_open returns
// and then calls the user handler
//----------------------------------------------------------------------------
class OpenHandler: public XrdCl::ResponseHandler
{
public:
//------------------------------------------------------------------------
// Constructor
//------------------------------------------------------------------------
OpenHandler( XrdCl::FileStateHandler *stateHandler,
XrdCl::ResponseHandler *userHandler ):
pStateHandler( stateHandler ),
pUserHandler( userHandler )
{
}
//------------------------------------------------------------------------
// Handle the response
//------------------------------------------------------------------------
virtual void HandleResponseWithHosts( XrdCl::XRootDStatus *status,
XrdCl::AnyObject *response,
XrdCl::HostList *hostList )
{
using namespace XrdCl;
//----------------------------------------------------------------------
// Extract the statistics info
//----------------------------------------------------------------------
OpenInfo *openInfo = 0;
if( status->IsOK() )
response->Get( openInfo );
//----------------------------------------------------------------------
// Notify the state handler and the client and say bye bye
//----------------------------------------------------------------------
pStateHandler->OnOpen( status, openInfo, hostList );
delete response;
if( pUserHandler )
pUserHandler->HandleResponseWithHosts( status, 0, hostList );
else
{
delete status;
delete hostList;
}
delete this;
}
private:
XrdCl::FileStateHandler *pStateHandler;
XrdCl::ResponseHandler *pUserHandler;
};
//----------------------------------------------------------------------------
// Object that does things to the FileStateHandler when kXR_close returns
// and then calls the user handler
//----------------------------------------------------------------------------
class CloseHandler: public XrdCl::ResponseHandler
{
public:
//------------------------------------------------------------------------
// Constructor
//------------------------------------------------------------------------
CloseHandler( XrdCl::FileStateHandler *stateHandler,
XrdCl::ResponseHandler *userHandler,
XrdCl::Message *message ):
pStateHandler( stateHandler ),
pUserHandler( userHandler ),
pMessage( message )
{
}
//------------------------------------------------------------------------
//! Destructor
//------------------------------------------------------------------------
virtual ~CloseHandler()
{
delete pMessage;
}
//------------------------------------------------------------------------
// Handle the response
//------------------------------------------------------------------------
virtual void HandleResponseWithHosts( XrdCl::XRootDStatus *status,
XrdCl::AnyObject *response,
XrdCl::HostList *hostList )
{
pStateHandler->OnClose( status );
if( pUserHandler )
pUserHandler->HandleResponseWithHosts( status, response, hostList );
else
{
delete response;
delete status;
delete hostList;
}
delete this;
}
private:
XrdCl::FileStateHandler *pStateHandler;
XrdCl::ResponseHandler *pUserHandler;
XrdCl::Message *pMessage;
};
//----------------------------------------------------------------------------
// Stateful message handler
//----------------------------------------------------------------------------
class StatefulHandler: public XrdCl::ResponseHandler
{
public:
//------------------------------------------------------------------------
// Constructor
//------------------------------------------------------------------------
StatefulHandler( XrdCl::FileStateHandler *stateHandler,
XrdCl::ResponseHandler *userHandler,
XrdCl::Message *message,
const XrdCl::MessageSendParams &sendParams ):
pStateHandler( stateHandler ),
pUserHandler( userHandler ),
pMessage( message ),
pSendParams( sendParams )
{
}
//------------------------------------------------------------------------
// Destructor
//------------------------------------------------------------------------
virtual ~StatefulHandler()
{
delete pMessage;
delete pSendParams.chunkList;
}
//------------------------------------------------------------------------
// Handle the response
//------------------------------------------------------------------------
virtual void HandleResponseWithHosts( XrdCl::XRootDStatus *status,
XrdCl::AnyObject *response,
XrdCl::HostList *hostList )
{
using namespace XrdCl;
XRDCL_SMART_PTR_T<XRootDStatus> statusPtr( status );
XRDCL_SMART_PTR_T<AnyObject> responsePtr( response );
pSendParams.hostList = hostList;
//----------------------------------------------------------------------
// Houston we have a problem...
//----------------------------------------------------------------------
if( !status->IsOK() )
{
statusPtr.release();
pStateHandler->OnStateError( status, pMessage, this, pSendParams );
return;
}
//----------------------------------------------------------------------
// We're clear
//----------------------------------------------------------------------
statusPtr.release();
responsePtr.release();
pStateHandler->OnStateResponse( status, pMessage, response, hostList );
pUserHandler->HandleResponseWithHosts( status, response, hostList );
delete this;
}
//------------------------------------------------------------------------
//! Get the user handler
//------------------------------------------------------------------------
XrdCl::ResponseHandler *GetUserHandler()
{
return pUserHandler;
}
private:
XrdCl::FileStateHandler *pStateHandler;
XrdCl::ResponseHandler *pUserHandler;
XrdCl::Message *pMessage;
XrdCl::MessageSendParams pSendParams;
};
}
namespace XrdCl
{
//----------------------------------------------------------------------------
// Constructor
//----------------------------------------------------------------------------
FileStateHandler::FileStateHandler():
pFileState( Closed ),
pStatInfo( 0 ),
pFileUrl( 0 ),
pDataServer( 0 ),
pLoadBalancer( 0 ),
pStateRedirect( 0 ),
pFileHandle( 0 ),
pOpenMode( 0 ),
pOpenFlags( 0 ),
pSessionId( 0 ),
pDoRecoverRead( true ),
pDoRecoverWrite( true ),
pFollowRedirects( true )
{
pFileHandle = new uint8_t[4];
ResetMonitoringVars();
DefaultEnv::GetForkHandler()->RegisterFileObject( this );
DefaultEnv::GetFileTimer()->RegisterFileObject( this );
}
//----------------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------------
FileStateHandler::~FileStateHandler()
{
if( DefaultEnv::GetFileTimer() )
DefaultEnv::GetFileTimer()->UnRegisterFileObject( this );
if( DefaultEnv::GetForkHandler() )
DefaultEnv::GetForkHandler()->UnRegisterFileObject( this );
if( pFileState != Closed && DefaultEnv::GetLog() )
{
XRootDStatus st;
MonitorClose( &st );
ResetMonitoringVars();
}
delete pStatInfo;
delete pFileUrl;
delete pDataServer;
delete pLoadBalancer;
delete [] pFileHandle;
}
//----------------------------------------------------------------------------
// Open the file pointed to by the given URL
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Open( const std::string &url,
uint16_t flags,
uint16_t mode,
ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
//--------------------------------------------------------------------------
// Check if we can proceed
//--------------------------------------------------------------------------
if( pFileState == Error )
return pStatus;
if( pFileState == OpenInProgress )
return XRootDStatus( stError, errInProgress );
if( pFileState == CloseInProgress || pFileState == Opened ||
pFileState == Recovering )
return XRootDStatus( stError, errInvalidOp );
pStatus = OpenInProgress;
//--------------------------------------------------------------------------
// Check if the parameters are valid
//--------------------------------------------------------------------------
Log *log = DefaultEnv::GetLog();
pFileUrl = new URL( url );
if( !pFileUrl->IsValid() )
{
log->Error( FileMsg, "[0x%x@%s] Trying to open invalid url: %s",
this, pFileUrl->GetPath().c_str(), url.c_str() );
pStatus = XRootDStatus( stError, errInvalidArgs );
pFileState = Error;
return pStatus;
}
//--------------------------------------------------------------------------
// Check if the recovery procedures should be enabled
//--------------------------------------------------------------------------
const URL::ParamsMap &urlParams = pFileUrl->GetParams();
URL::ParamsMap::const_iterator it;
it = urlParams.find( "xrdcl.recover-reads" );
if( (it != urlParams.end() && it->second == "false") ||
!pDoRecoverRead )
{
pDoRecoverRead = false;
log->Debug( FileMsg, "[0x%x@%s] Read recovery procedures are disabled",
this, pFileUrl->GetURL().c_str() );
}
it = urlParams.find( "xrdcl.recover-writes" );
if( (it != urlParams.end() && it->second == "false") ||
!pDoRecoverWrite )
{
pDoRecoverWrite = false;
log->Debug( FileMsg, "[0x%x@%s] Write recovery procedures are disabled",
this, pFileUrl->GetURL().c_str() );
}
//--------------------------------------------------------------------------
// Open the file
//--------------------------------------------------------------------------
log->Debug( FileMsg, "[0x%x@%s] Sending an open command", this,
pFileUrl->GetURL().c_str() );
pOpenMode = mode;
pOpenFlags = flags;
Message *msg;
ClientOpenRequest *req;
std::string path = pFileUrl->GetPathWithParams();
MessageUtils::CreateRequest( msg, req, path.length() );
req->requestid = kXR_open;
req->mode = mode;
req->options = flags | kXR_async | kXR_retstat;
req->dlen = path.length();
msg->Append( path.c_str(), path.length(), 24 );
XRootDTransport::SetDescription( msg );
OpenHandler *openHandler = new OpenHandler( this, handler );
MessageSendParams params; params.timeout = timeout;
params.followRedirects = pFollowRedirects;
MessageUtils::ProcessSendParams( params );
Status st = MessageUtils::SendMessage( *pFileUrl, msg, openHandler, params );
if( !st.IsOK() )
{
delete openHandler;
pStatus = st;
pFileState = Error;
return st;
}
return st;
}
//----------------------------------------------------------------------------
// Close the file object
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Close( ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
//--------------------------------------------------------------------------
// Check if we can proceed
//--------------------------------------------------------------------------
if( pFileState == Error )
return pStatus;
if( pFileState == CloseInProgress )
return XRootDStatus( stError, errInProgress );
if( pFileState == OpenInProgress || pFileState == Closed ||
pFileState == Recovering || !pInTheFly.empty() )
return XRootDStatus( stError, errInvalidOp );
pStatus = CloseInProgress;
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a close command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
//--------------------------------------------------------------------------
// Close the file
//--------------------------------------------------------------------------
Message *msg;
ClientCloseRequest *req;
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_close;
memcpy( req->fhandle, pFileHandle, 4 );
XRootDTransport::SetDescription( msg );
msg->SetSessionId( pSessionId );
CloseHandler *closeHandler = new CloseHandler( this, handler, msg );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
MessageUtils::ProcessSendParams( params );
Status st = MessageUtils::SendMessage( *pDataServer, msg, closeHandler, params );
if( !st.IsOK() )
{
delete closeHandler;
if( st.code == errInvalidSession && IsReadOnly() )
{
pFileState = Closed;
return st;
}
pStatus = st;
pFileState = Error;
return st;
}
return st;
}
//----------------------------------------------------------------------------
// Stat the file
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Stat( bool force,
ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
//--------------------------------------------------------------------------
// Return the cached info
//--------------------------------------------------------------------------
if( !force )
{
AnyObject *obj = new AnyObject();
obj->Set( new StatInfo( *pStatInfo ) );
handler->HandleResponseWithHosts( new XRootDStatus(), obj,
new HostList() );
return XRootDStatus();
}
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a stat command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
//--------------------------------------------------------------------------
// Issue a new stat request
// stating a file handle doesn't work (fixed in 3.2.0) so we need to
// stat the pat
//--------------------------------------------------------------------------
Message *msg;
ClientStatRequest *req;
std::string path = pFileUrl->GetPath();
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_stat;
memcpy( req->fhandle, pFileHandle, 4 );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Read a data chunk at a given offset - sync
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Read( uint64_t offset,
uint32_t size,
void *buffer,
ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a read command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
Message *msg;
ClientReadRequest *req;
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_read;
req->offset = offset;
req->rlen = size;
memcpy( req->fhandle, pFileHandle, 4 );
ChunkList *list = new ChunkList();
list->push_back( ChunkInfo( offset, size, buffer ) );
XRootDTransport::SetDescription( msg );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
params.chunkList = list;
MessageUtils::ProcessSendParams( params );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Write a data chunk at a given offset - async
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Write( uint64_t offset,
uint32_t size,
const void *buffer,
ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a write command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
Message *msg;
ClientWriteRequest *req;
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_write;
req->offset = offset;
req->dlen = size;
memcpy( req->fhandle, pFileHandle, 4 );
ChunkList *list = new ChunkList();
list->push_back( ChunkInfo( 0, size, (char*)buffer ) );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
params.chunkList = list;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Commit all pending disk writes - async
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Sync( ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a sync command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
Message *msg;
ClientSyncRequest *req;
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_sync;
memcpy( req->fhandle, pFileHandle, 4 );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Truncate the file to a particular size - async
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Truncate( uint64_t size,
ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a truncate command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
Message *msg;
ClientTruncateRequest *req;
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_truncate;
memcpy( req->fhandle, pFileHandle, 4 );
req->offset = size;
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Read scattered data chunks in one operation - async
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::VectorRead( const ChunkList &chunks,
void *buffer,
ResponseHandler *handler,
uint16_t timeout )
{
//--------------------------------------------------------------------------
// Sanity check
//--------------------------------------------------------------------------
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a vector read command for handle "
"0x%x to %s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
//--------------------------------------------------------------------------
// Build the message
//--------------------------------------------------------------------------
Message *msg;
ClientReadVRequest *req;
MessageUtils::CreateRequest( msg, req, sizeof(readahead_list)*chunks.size() );
req->requestid = kXR_readv;
req->dlen = sizeof(readahead_list)*chunks.size();
ChunkList *list = new ChunkList();
char *cursor = (char*)buffer;
//--------------------------------------------------------------------------
// Copy the chunk info
//--------------------------------------------------------------------------
readahead_list *dataChunk = (readahead_list*)msg->GetBuffer( 24 );
for( size_t i = 0; i < chunks.size(); ++i )
{
dataChunk[i].rlen = chunks[i].length;
dataChunk[i].offset = chunks[i].offset;
memcpy( dataChunk[i].fhandle, pFileHandle, 4 );
void *chunkBuffer;
if( cursor )
{
chunkBuffer = cursor;
cursor += chunks[i].length;
}
else
chunkBuffer = chunks[i].buffer;
list->push_back( ChunkInfo( chunks[i].offset,
chunks[i].length,
chunkBuffer ) );
}
//--------------------------------------------------------------------------
// Send the message
//--------------------------------------------------------------------------
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
params.chunkList = list;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Performs a custom operation on an open file, server implementation
// dependent - async
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Fcntl( const Buffer &arg,
ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a fcntl command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
Message *msg;
ClientQueryRequest *req;
MessageUtils::CreateRequest( msg, req, arg.GetSize() );
req->requestid = kXR_query;
req->infotype = kXR_Qopaqug;
req->dlen = arg.GetSize();
memcpy( req->fhandle, pFileHandle, 4 );
msg->Append( arg.GetBuffer(), arg.GetSize(), 24 );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Get access token to a file - async
//----------------------------------------------------------------------------
XRootDStatus FileStateHandler::Visa( ResponseHandler *handler,
uint16_t timeout )
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState != Opened && pFileState != Recovering )
return XRootDStatus( stError, errInvalidOp );
Log *log = DefaultEnv::GetLog();
log->Debug( FileMsg, "[0x%x@%s] Sending a visa command for handle 0x%x to "
"%s", this, pFileUrl->GetURL().c_str(),
*((uint32_t*)pFileHandle), pDataServer->GetHostId().c_str() );
Message *msg;
ClientQueryRequest *req;
MessageUtils::CreateRequest( msg, req );
req->requestid = kXR_query;
req->infotype = kXR_Qvisa;
memcpy( req->fhandle, pFileHandle, 4 );
MessageSendParams params;
params.timeout = timeout;
params.followRedirects = false;
params.stateful = true;
MessageUtils::ProcessSendParams( params );
XRootDTransport::SetDescription( msg );
StatefulHandler *stHandler = new StatefulHandler( this, handler, msg, params );
return SendOrQueue( *pDataServer, msg, stHandler, params );
}
//----------------------------------------------------------------------------
// Check if the file is open
//----------------------------------------------------------------------------
bool FileStateHandler::IsOpen() const
{
XrdSysMutexHelper scopedLock( pMutex );
if( pFileState == Opened || pFileState == Recovering )
return true;
return false;
}
//----------------------------------------------------------------------------
// Set file property
//----------------------------------------------------------------------------
bool FileStateHandler::SetProperty( const std::string &name,
const std::string &value )
{
XrdSysMutexHelper scopedLock( pMutex );
if( name == "ReadRecovery" )
{
if( value == "true" ) pDoRecoverRead = true;
else pDoRecoverRead = false;
return true;
}
else if( name == "WriteRecovery" )
{
if( value == "true" ) pDoRecoverWrite = true;
else pDoRecoverWrite = false;
return true;
}
else if( name == "FollowRedirects" )
{
if( value == "true" ) pFollowRedirects = true;
else pFollowRedirects = false;
return true;
}
return false;
}
//----------------------------------------------------------------------------
// Get file property
//----------------------------------------------------------------------------
bool FileStateHandler::GetProperty( const std::string &name,
std::string &value ) const
{
XrdSysMutexHelper scopedLock( pMutex );
if( name == "ReadRecovery" )
{
if( pDoRecoverRead ) value = "true";
else value = "false";
return true;
}
else if( name == "WriteRecovery" )
{
if( pDoRecoverWrite ) value = "true";
else value = "false";
return true;
}
else if( name == "FollowRedirects" )
{
if( pFollowRedirects ) value = "true";
else value = "false";
return true;
}
else if( name == "DataServer" && pDataServer )
{ value = pDataServer->GetHostId(); return true; }
else if( name == "LastURL" && pDataServer )
{ value = pDataServer->GetURL(); return true; }
value = "";
return false;
}
//----------------------------------------------------------------------------
// Process the results of the opening operation
//----------------------------------------------------------------------------
void FileStateHandler::OnOpen( const XRootDStatus *status,
const OpenInfo *openInfo,
const HostList *hostList )
{
Log *log = DefaultEnv::GetLog();
XrdSysMutexHelper scopedLock( pMutex );
//--------------------------------------------------------------------------
// Assign the data server and the load balancer
//--------------------------------------------------------------------------
std::string lastServer = pFileUrl->GetHostId();
if( hostList )
{
delete pDataServer;
delete pLoadBalancer;
pLoadBalancer = 0;
pDataServer = new URL( hostList->back().url );
pDataServer->SetParams( pFileUrl->GetParams() );
pDataServer->SetPath( pFileUrl->GetPath() );
lastServer = pDataServer->GetHostId();
HostList::const_iterator itC;
URL::ParamsMap params = pDataServer->GetParams();
for( itC = hostList->begin(); itC != hostList->end(); ++itC )
{
MessageUtils::MergeCGI( params,
itC->url.GetParams(),
true );
}
pDataServer->SetParams( params );
HostList::const_reverse_iterator it;
for( it = hostList->rbegin(); it != hostList->rend(); ++it )
if( it->loadBalancer )
{
pLoadBalancer = new URL( it->url );
break;
}
}
log->Debug( FileMsg, "[0x%x@%s] Open has returned with status %s",
this, pFileUrl->GetURL().c_str(), status->ToStr().c_str() );
//--------------------------------------------------------------------------
// We have failed
//--------------------------------------------------------------------------
pStatus = *status;
if( !pStatus.IsOK() )
{
log->Debug( FileMsg, "[0x%x@%s] Error while opening at %s: %s",
this, pFileUrl->GetURL().c_str(), lastServer.c_str(),
pStatus.ToStr().c_str() );
FailQueuedMessages( pStatus );
pFileState = Error;
//------------------------------------------------------------------------
// Report to monitoring
//------------------------------------------------------------------------
Monitor *mon = DefaultEnv::GetMonitor();
if( mon )
{
Monitor::ErrorInfo i;
i.file = pFileUrl;
i.status = status;
i.opCode = Monitor::ErrorInfo::ErrOpen;
mon->Event( Monitor::EvErrIO, &i );
}
}
//--------------------------------------------------------------------------
// We have succeeded
//--------------------------------------------------------------------------
else
{
//------------------------------------------------------------------------
// Store the response info
//------------------------------------------------------------------------
openInfo->GetFileHandle( pFileHandle );
pSessionId = openInfo->GetSessionId();
if( openInfo->GetStatInfo() )
{
delete pStatInfo;
pStatInfo = new StatInfo( *openInfo->GetStatInfo() );
}
log->Debug( FileMsg, "[0x%x@%s] successfully opened at %s, handle: 0x%x, "
"session id: %ld", this, pFileUrl->GetURL().c_str(),
pDataServer->GetHostId().c_str(), *((uint32_t*)pFileHandle),
pSessionId );
//------------------------------------------------------------------------
// Inform the monitoring about opening success
//------------------------------------------------------------------------
gettimeofday( &pOpenTime, 0 );
Monitor *mon = DefaultEnv::GetMonitor();
if( mon )
{
Monitor::OpenInfo i;
i.file = pFileUrl;
i.dataServer = pDataServer->GetHostId();
i.oFlags = pOpenFlags;
i.fSize = pStatInfo ? pStatInfo->GetSize() : 0;
mon->Event( Monitor::EvOpen, &i );
}
//------------------------------------------------------------------------
// Resend the queued messages if any
//------------------------------------------------------------------------
ReSendQueuedMessages();
pFileState = Opened;
}
}
//----------------------------------------------------------------------------
// Process the results of the closing operation
//----------------------------------------------------------------------------
void FileStateHandler::OnClose( const XRootDStatus *status )
{
Log *log = DefaultEnv::GetLog();
XrdSysMutexHelper scopedLock( pMutex );
log->Debug( FileMsg, "[0x%x@%s] Close returned from %s with: %s", this,
pFileUrl->GetURL().c_str(), pDataServer->GetHostId().c_str(),
status->ToStr().c_str() );
log->Dump( FileMsg, "[0x%x@%s] Items in the fly %d, queued for recovery %d",
this, pFileUrl->GetURL().c_str(), pInTheFly.size(),
pToBeRecovered.size() );