Davix::DavFile Class Reference

Davix File Interface. More...

#include <davfile.hpp>


Public Member Functions

 DavFile (Context &c, const Uri &url)
 default constructor
 DavFile (const DavFile &orig)
virtual ~DavFile ()
 destructor
const UrigetUri () const
 return Uri of the current file
std::vector< DavFilegetReplicas (const RequestParams *params, DavixError **err)
 return all replicas associated to this file
dav_ssize_t readPartialBufferVec (const RequestParams *params, const DavIOVecInput *input_vec, DavIOVecOuput *ioutput_vec, const dav_size_t count_vec, DavixError **err)
 Vector read operation Allow to do several read several data chunk in one single operation Use Http multi-part when supported by the server, simulate a vector read operation in the other case.
dav_ssize_t readPartial (const RequestParams *params, void *buff, dav_size_t count, dav_off_t offset, DavixError **err)
 Partial position independant read.
dav_ssize_t getToFd (const RequestParams *params, int fd, DavixError **err)
 Get the full file content and write it to fd.
dav_ssize_t getToFd (const RequestParams *params, int fd, dav_size_t size_read, DavixError **err)
 Get the first 'size_read' bytes of the file and write it to fd.
dav_ssize_t getFull (const RequestParams *params, std::vector< char > &buffer, DavixError **err)
 Get the full file content in a dynamically allocated buffer.
int putFromFd (const RequestParams *params, int fd, dav_size_t size_write, DavixError **err)
 create and replace the file with the content of the file descriptor fd
void deletion (const RequestParams *params=NULL)
 Suppress the current entity. able to suppress collection too.
int deletion (const RequestParams *params, DavixError **err) throw ()
 Suppress the current entity. able to suppress collection too Exception safe version of deletion(const RequestParams* params = NULL).
void makeCollection (const RequestParams *params=NULL)
 create a collection ( directory or bucket) at the current url
int makeCollection (const RequestParams *params, DavixError **err) throw ()
 create a collection ( directory or bucket) at the current url
StatInfostatInfo (const RequestParams *params, StatInfo &info)
 execute a file meta-data query
int stat (const RequestParams *params, struct stat *st, DavixError **err)
 execute a POSIX-like stat() query
std::string & checksum (const RequestParams *params, std::string &checksm, const std::string &chk_algo)
 compute checksum of the file with the given algorithm (MD5, CRC32, ADLER32)
int checksum (const RequestParams *params, std::string &checksm, const std::string &chk_algo, DavixError **err) throw ()
 compute checksum of the file with the given algorithm (MD5, CRC32, ADLER32)
void prefetchInfo (off_t offset, dav_size_t size_read, advise_t adv)
 provide informations on the next file operation
dav_ssize_t getAllReplicas (const RequestParams *params, ReplicaVec &vec, DavixError **err)


Detailed Description

Davix File Interface.

Davix File interface


Constructor & Destructor Documentation

Davix::DavFile::DavFile ( Context c,
const Uri url 
)

default constructor

Parameters:
c context
url Remote File URL


Member Function Documentation

int Davix::DavFile::checksum ( const RequestParams params,
std::string &  checksm,
const std::string &  chk_algo,
DavixError **  err 
) throw ()

compute checksum of the file with the given algorithm (MD5, CRC32, ADLER32)

Exception safe version of checksum

std::string& Davix::DavFile::checksum ( const RequestParams params,
std::string &  checksm,
const std::string &  chk_algo 
)

compute checksum of the file with the given algorithm (MD5, CRC32, ADLER32)

Depend of server implementation

Parameters:
params request parameters
checksm checksum buffer
chk_algo string of the algorithm (eg: "MD5" )
Returns:
reference to checksm, throw DavixException if error occurs

void Davix::DavFile::deletion ( const RequestParams params = NULL  ) 

Suppress the current entity. able to suppress collection too.

Parameters:
params Davix request Parameters
Exceptions:
throw DavixException if error occurs

dav_ssize_t Davix::DavFile::getAllReplicas ( const RequestParams params,
ReplicaVec &  vec,
DavixError **  err 
)

Deprecated:
deprecated, will be removed in 1.0

dav_ssize_t Davix::DavFile::getFull ( const RequestParams params,
std::vector< char > &  buffer,
DavixError **  err 
)

Get the full file content in a dynamically allocated buffer.

Parameters:
params Davix request Parameters
buffer reference to a vector for the result
err Davix Error report
Returns:
total number of bytes read, or -1 if error occures

std::vector<DavFile> Davix::DavFile::getReplicas ( const RequestParams params,
DavixError **  err 
)

return all replicas associated to this file

Replicas are found using a corresponding The MetaLink standard ( rfc5854, rfc6249 )

Parameters:
params Davix Request parameters
err DavixError error report
Returns:
Replica vector, if error is found return empty vector and set err properly

dav_ssize_t Davix::DavFile::getToFd ( const RequestParams params,
int  fd,
dav_size_t  size_read,
DavixError **  err 
)

Get the first 'size_read' bytes of the file and write it to fd.

Parameters:
params Davix request Parameters
fd file descriptor for write operation
size_read number of bytes to read
err Davix Error report
Returns:
total number of bytes read, or -1 if error occures

dav_ssize_t Davix::DavFile::getToFd ( const RequestParams params,
int  fd,
DavixError **  err 
)

Get the full file content and write it to fd.

Parameters:
params Davix request Parameters
fd file descriptor for write operation
err Davix Error report
Returns:
total number of bytes read, or -1 if error occures

int Davix::DavFile::makeCollection ( const RequestParams params,
DavixError **  err 
) throw ()

create a collection ( directory or bucket) at the current url

Exception safe version of makeCollection(const RequestParams *params = NULL)

void Davix::DavFile::makeCollection ( const RequestParams params = NULL  ) 

create a collection ( directory or bucket) at the current url

Parameters:
params Davix request Parameters
Exceptions:
throw DavixException if error occurs

void Davix::DavFile::prefetchInfo ( off_t  offset,
dav_size_t  size_read,
advise_t  adv 
)

provide informations on the next file operation

provide informations on the next file operations for optimizations and prefetching

Parameters:
offset 
size_read 
adv 

int Davix::DavFile::putFromFd ( const RequestParams params,
int  fd,
dav_size_t  size_write,
DavixError **  err 
)

create and replace the file with the content of the file descriptor fd

Parameters:
params Davix request Parameters
fd file descriptor
size_write number of bytes to write
err Davix Error report
Returns:
0 if success, or -1 if error occures

dav_ssize_t Davix::DavFile::readPartial ( const RequestParams params,
void *  buff,
dav_size_t  count,
dav_off_t  offset,
DavixError **  err 
)

Partial position independant read.

Use Ranged request when supported by the server, simulate a ranged request when not supported

Parameters:
params Davix request Parameters
buff buffer
count maximum read size
offset start offset for the read operation
err Davix Error report
Returns:
total number of bytes read, or -1 if error occures

dav_ssize_t Davix::DavFile::readPartialBufferVec ( const RequestParams params,
const DavIOVecInput input_vec,
DavIOVecOuput ioutput_vec,
const dav_size_t  count_vec,
DavixError **  err 
)

Vector read operation Allow to do several read several data chunk in one single operation Use Http multi-part when supported by the server, simulate a vector read operation in the other case.

Parameters:
params Davix request Parameters
input_vec input vectors, parameters
ioutput_vec output vectors, results
count_vec number of vector struct
err Davix Error report
Returns:
total number of bytes read, or -1 if error occures

int Davix::DavFile::stat ( const RequestParams params,
struct stat *  st,
DavixError **  err 
)

execute a POSIX-like stat() query

Parameters:
params Davix request Parameters
st stat struct
err Davix Error report
Returns:
0 if success, or -1 if error occures

StatInfo& Davix::DavFile::statInfo ( const RequestParams params,
StatInfo info 
)

execute a file meta-data query

Parameters:
params Davix request Parameters
st stat struct
err Davix Error report
Returns:
0 if success, or -1 if error occures


The documentation for this class was generated from the following file:
Generated on 13 Aug 2014 for davix by  doxygen 1.4.7