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// $Id$
#include "RM_Helper.h"
#include "ciao/Packaging_DataC.h" //for the PackageConfiguration declaration
#include "tao/CDR.h" //for TAO CDR classes
#include "ace/Message_Block.h" //for ACE_Message_Block
#include "ace/Auto_Ptr.h" //for Auto_Ptr
#include "ace/OS_NS_fcntl.h" //for open
#include "ace/OS_NS_unistd.h" //for close
#include "ace/OS_NS_sys_stat.h" //for filesize and mkdir
void RM_Helper::pc_to_cdr (const Deployment::PackageConfiguration& pc, TAO_OutputCDR& cdr)
{
cdr << pc;
}
void RM_Helper::cdr_to_pc (Deployment::PackageConfiguration& pc, TAO_InputCDR& cdr)
{
cdr >> pc;
}
bool RM_Helper::externalize (const Deployment::PackageConfiguration& pc, const char* path)
{
size_t bufsiz = 0;
TAO_OutputCDR out (bufsiz);
RM_Helper::pc_to_cdr (pc, out);
const ACE_Message_Block* mb = out.begin ();
return write_pc_to_disk (path, *(const_cast<ACE_Message_Block*> (mb)));
}
bool RM_Helper::reincarnate (Deployment::PackageConfiguration& pc, const char* path)
{
size_t length = 0;
ACE_Auto_Ptr<ACE_Message_Block> mb (read_pc_from_disk (path, length));
if (!mb.get ())
return false;
TAO_InputCDR in (mb.get ());
RM_Helper::cdr_to_pc (pc, in);
return true;
}
//---------------------------------------------------------------------
//These are a bit obsolete but until I am sure I will keep them
//This function attempts to write a sequence of bytes to
//a specified location. A 0 is returned in the case of an error
//and a 1 upon success
bool RM_Helper::write_to_disk (
const char* full_path,
const CORBA::Octet* buffer,
size_t length
)
{
// Open a file handle to the local filesystem
ACE_HANDLE handle = ACE_OS::open (full_path, O_CREAT | O_TRUNC | O_WRONLY);
if (handle == ACE_INVALID_HANDLE)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::write_to_disk] file creation error")),
0);
//write the data to the file
if (ACE_OS::write (handle, buffer, length) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::write_to_disk] file write error")),
0);
// Close the file handle
ACE_OS::close (handle);
return 1;
}
//This function attempts to write a sequence of bytes from an
//ACE_Message_Block to a specified location. A 0 is returned
//in the case of an error and a 1 upon success
bool RM_Helper::write_to_disk (
const char* full_path,
ACE_Message_Block& mb,
bool replace
)
{
ACE_stat stat;
if (ACE_OS::stat(full_path, &stat) != -1 && !replace)
return 0;
// Open a file handle to the local filesystem
ACE_HANDLE handle = ACE_OS::open (full_path, O_CREAT | O_TRUNC | O_WRONLY);
if (handle == ACE_INVALID_HANDLE)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::write_to_disk] file creation error")),
0);
//write the data to the file
for (ACE_Message_Block * curr = &mb; curr != 0; curr = curr->cont ())
if (ACE_OS::write_n (handle, curr->rd_ptr(), curr->length()) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("write error")),
0);
// Close the file handle
ACE_OS::close (handle);
return 1;
}
//This function attempts to write a sequence of bytes from an
//ACE_Message_Block to a specified location. A 0 is returned
//in the case of an error and a 1 upon success
//
//NOTE: This function write the contents in a way that preserves the
//structure of the ACE_Message_Block. It is relevant for
//PackageConfigurations ONLY
bool RM_Helper::write_pc_to_disk (
const char* full_path,
ACE_Message_Block& mb,
bool replace
)
{
ACE_stat stat;
if (ACE_OS::stat(full_path, &stat) != -1 && !replace)
return 0;
// Open a file handle to the local filesystem
ACE_HANDLE handle = ACE_OS::open (full_path, O_CREAT | O_TRUNC | O_WRONLY);
if (handle == ACE_INVALID_HANDLE)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::write_to_disk] file creation error")),
0);
//write the data to the file
for (ACE_Message_Block * curr = &mb; curr != 0; curr = curr->cont ())
if (ACE_OS::write_n (handle, curr->rd_ptr(), curr->length()) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("write error")),
0);
// Close the file handle
ACE_OS::close (handle);
return 1;
}
//This function attempts to read a sequence of bytes from a specified
//location and returns an octet sequence. A 0 is returned
//in the case of an error and a 1 upon success
CORBA::Octet* RM_Helper::read_from_disk (
const char* full_path,
size_t &length
)
{
//open the file
ACE_HANDLE handle = ACE_OS::open (full_path, O_RDONLY);
if (handle == ACE_INVALID_HANDLE)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::read_from_disk] file open error")),
0);
ACE_stat file_info;
ACE_OS::fstat (handle, &file_info);
CORBA::Octet* buffer;
ACE_NEW_RETURN (buffer, CORBA::Octet[file_info.st_size], 0);
//read the contents of the file into the buffer
if (ACE_OS::read_n (handle, buffer, file_info.st_size) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::read_from_disk] file read error")),
0);
// Close the file handle
ACE_OS::close (handle);
length = file_info.st_size;
return buffer;
}
///function to read the contents of a file from disk into an ACE_Message_Block
///returns a pointer to an ACE_Message_Block and updates the lenght on success
/// 0 on failure
ACE_Message_Block* RM_Helper::read_pc_from_disk (
const char* full_path,
size_t &length
)
{
length = 0;
//open the file
ACE_HANDLE handle = ACE_OS::open (full_path, O_RDONLY);
if (handle == ACE_INVALID_HANDLE)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::read_mb_from_disk] file open error")),
0);
ACE_stat file_info;
ACE_OS::fstat (handle, &file_info);
ACE_Message_Block* mb;
ACE_NEW_RETURN (mb, ACE_Message_Block (file_info.st_size + 1), 0);
//read the contents of the file into the buffer
if (ACE_OS::read_n (handle, mb->wr_ptr (), file_info.st_size) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("[RM::read_mb_from_disk] file read error")),
0);
mb->length (file_info.st_size);
// Close the file handle
ACE_OS::close (handle);
length = file_info.st_size;
return mb;
}
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