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aqhomecontrol/aqhome/data/datafile/df_direct/df_direct.c

445 lines
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C
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/****************************************************************************
* This file is part of the project Gwenhywfar.
* Gwenhywfar (c) by 2023 Martin Preuss, all rights reserved.
*
* The license for this file can be found in the file COPYING which you
* should have received along with this file.
****************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "./df_direct_p.h"
#include <gwenhywfar/debug.h>
#include <gwenhywfar/syncio_file.h>
#include <unistd.h>
GWEN_INHERIT(AQH_DATAFILE, AQH_DATAFILE_DIRECT);
/* ------------------------------------------------------------------------------------------------
* forward declarations
* ------------------------------------------------------------------------------------------------
*/
static void _cbFreeData(void *bp, void *p);
static int _cbCreate(AQH_DATAFILE *df);
static int _cbOpen(AQH_DATAFILE *df);
static int _cbClose(AQH_DATAFILE *df);
static uint64_t _cbGetNumberOfEntries(AQH_DATAFILE *df);
static int _cbReadRecord(AQH_DATAFILE *df, uint64_t idx, uint64_t *pTimestamp, double *pValue);
static int _cbAppendRecord(AQH_DATAFILE *df, uint64_t timestamp, double value);
static int _readRecord(GWEN_SYNCIO *sio, uint64_t idx, uint64_t *pTimestamp, double *pValue);
static int _writeRecord(GWEN_SYNCIO *sio, uint64_t filePos, uint64_t timestamp, double value);
/* ------------------------------------------------------------------------------------------------
* implementations
* ------------------------------------------------------------------------------------------------
*/
AQH_DATAFILE *AQH_DataFileDirect_new(const char *fileName, uint64_t valueId)
{
AQH_DATAFILE *df;
AQH_DATAFILE_DIRECT *xdf;
df=AQH_DataFile_new();
AQH_DataFile_SetValueId(df, valueId);
GWEN_NEW_OBJECT(AQH_DATAFILE_DIRECT, xdf);
xdf->fileName=fileName?strdup(fileName):NULL;
GWEN_INHERIT_SETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df, xdf, _cbFreeData);
AQH_DataFile_SetCreateFn(df, _cbCreate);
AQH_DataFile_SetOpenFn(df, _cbOpen);
AQH_DataFile_SetCloseFn(df, _cbClose);
AQH_DataFile_SetGetNumberOfEntriesFn(df, _cbGetNumberOfEntries);
AQH_DataFile_SetReadRecordFn(df, _cbReadRecord);
AQH_DataFile_SetAppendRecordFn(df, _cbAppendRecord);
return df;
}
void _cbFreeData(GWEN_UNUSED void *bp, void *p)
{
AQH_DATAFILE_DIRECT *xdf;
xdf=(AQH_DATAFILE_DIRECT*)p;
GWEN_SyncIo_free(xdf->sio);
free(xdf->fileName);
GWEN_FREE_OBJECT(xdf);
}
const char *_cbGetFileName(const AQH_DATAFILE *df)
{
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
return xdf?xdf->fileName:NULL;
}
uint64_t _cbGetNumberOfEntries(AQH_DATAFILE *df)
{
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
return xdf?xdf->numberOfEntries:0;
}
int _cbCreate(AQH_DATAFILE *df)
{
if (df) {
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
if (xdf) {
GWEN_SYNCIO *sio;
int rv;
if (xdf->sio) {
DBG_ERROR(AQH_LOGDOMAIN, "File already open");
return GWEN_ERROR_INVALID;
}
sio=GWEN_SyncIo_File_new(xdf->fileName, GWEN_SyncIo_File_CreationMode_CreateNew);
GWEN_SyncIo_SetFlags(sio,
GWEN_SYNCIO_FILE_FLAGS_WRITE | GWEN_SYNCIO_FILE_FLAGS_READ |
GWEN_SYNCIO_FILE_FLAGS_UREAD | GWEN_SYNCIO_FILE_FLAGS_UWRITE);
rv=GWEN_SyncIo_Connect(sio);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error creating file \"%s\" (%d)", xdf->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
rv=_writeRecord(sio, 0, 0, 0.0);
if (rv<0) {
DBG_DEBUG(AQH_LOGDOMAIN, "Error adding first record to file \"%s\" (%d)", xdf->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
xdf->sio=sio;
xdf->numberOfEntries=1; /* we just added the 0-record */
DBG_INFO(AQH_LOGDOMAIN, "File \"%s\" created.", xdf->fileName);
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Not of type AQH_DATAFILE_DIRECT");
return GWEN_ERROR_GENERIC;
}
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int _cbOpen(AQH_DATAFILE *df)
{
if (df) {
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
if (xdf) {
GWEN_SYNCIO *sio;
int rv;
int64_t len;
if (xdf->sio) {
DBG_ERROR(AQH_LOGDOMAIN, "File already open");
return GWEN_ERROR_INVALID;
}
sio=GWEN_SyncIo_File_new(xdf->fileName, GWEN_SyncIo_File_CreationMode_OpenExisting);
GWEN_SyncIo_SetFlags(sio, GWEN_SYNCIO_FILE_FLAGS_WRITE | GWEN_SYNCIO_FILE_FLAGS_READ);
rv=GWEN_SyncIo_Connect(sio);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error opening file \"%s\" (%d)", xdf->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
len=GWEN_SyncIo_File_Seek(sio, 0, GWEN_SyncIo_File_Whence_End);
if (len<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error seeking to end of file \"%s\" (%d)", xdf->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
if (len % AQH_DATAFILE_RECORDSIZE) {
DBG_ERROR(AQH_LOGDOMAIN, "Invalid file size of file \"%s\" (not a multiple of current record size)", xdf->fileName);
GWEN_SyncIo_Disconnect(sio);
GWEN_SyncIo_free(sio);
unlink(xdf->fileName);
return GWEN_ERROR_BAD_DATA;
}
xdf->numberOfEntries=len/AQH_DATAFILE_RECORDSIZE;
len=GWEN_SyncIo_File_Seek(sio, 0, GWEN_SyncIo_File_Whence_Set);
if (len<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error seeking to begin of file \"%s\" (%d)", xdf->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
xdf->sio=sio;
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Not of type AQH_DATAFILE_DIRECT");
return GWEN_ERROR_GENERIC;
}
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int _cbClose(AQH_DATAFILE *df)
{
if (df) {
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
if (xdf) {
int rv;
if (xdf->sio==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "File not open");
return GWEN_ERROR_INVALID;
}
rv=GWEN_SyncIo_Disconnect(xdf->sio);
if (rv<0) {
DBG_ERROR(AQH_LOGDOMAIN, "Error closing file \"%s\" (%d)", xdf->fileName, rv);
GWEN_SyncIo_free(xdf->sio);
xdf->sio=NULL;
xdf->numberOfEntries=0;
return rv;
}
GWEN_SyncIo_free(xdf->sio);
xdf->sio=NULL;
xdf->numberOfEntries=0;
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Not of type AQH_DATAFILE_DIRECT");
return GWEN_ERROR_GENERIC;
}
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int _cbReadRecord(AQH_DATAFILE *df, uint64_t idx, uint64_t *pTimestamp, double *pValue)
{
if (df) {
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
if (xdf) {
int rv;
if (xdf->sio==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "File not open");
return GWEN_ERROR_INVALID;
}
rv=_readRecord(xdf->sio, idx, pTimestamp, pValue);;
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error reading from file \"%s\" (%d)", xdf->fileName, rv);
return rv;
}
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Not of type AQH_DATAFILE_DIRECT");
return GWEN_ERROR_GENERIC;
}
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int _cbAppendRecord(AQH_DATAFILE *df, uint64_t timestamp, double value)
{
if (df) {
AQH_DATAFILE_DIRECT *xdf;
xdf=GWEN_INHERIT_GETDATA(AQH_DATAFILE, AQH_DATAFILE_DIRECT, df);
if (xdf) {
int rv;
uint64_t filePos;
if (xdf->sio==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "File not open");
return GWEN_ERROR_INVALID;
}
filePos=(xdf->numberOfEntries)*AQH_DATAFILE_RECORDSIZE;
rv=_writeRecord(xdf->sio, filePos, timestamp, value);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error writing to file \"%s\" (%d)", xdf->fileName, rv);
return rv;
}
xdf->numberOfEntries++;
DBG_DEBUG(AQH_LOGDOMAIN, "File \"%s\" has now %lu entries", xdf->fileName, (unsigned long int) (xdf->numberOfEntries));
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Not of type AQH_DATAFILE_DIRECT");
return GWEN_ERROR_GENERIC;
}
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int _readRecord(GWEN_SYNCIO *sio, uint64_t idx, uint64_t *pTimestamp, double *pValue)
{
uint8_t record[AQH_DATAFILE_RECORDSIZE];
union {double f; uint64_t i;} u;
uint64_t filePos;
int64_t retPos;
const uint8_t *ptr;
uint64_t v;
int rv;
filePos=idx*AQH_DATAFILE_RECORDSIZE;
retPos=GWEN_SyncIo_File_Seek(sio, filePos, GWEN_SyncIo_File_Whence_Set);
if (retPos<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error seeking to pos %lu (%d)", (unsigned long int) filePos, (int) retPos);
return (int) retPos;
}
rv=GWEN_SyncIo_ReadForced(sio, record, AQH_DATAFILE_RECORDSIZE);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error reading at pos %lu (%d)", (unsigned long int) filePos, rv);
return rv;
}
ptr=record+AQH_DATAFILE_OFFSET_TIMESTAMP;
v=0;
v|=(uint64_t)(*(ptr++));
v|=(uint64_t)(*(ptr++))<<8;
v|=(uint64_t)(*(ptr++))<<16;
v|=(uint64_t)(*(ptr++))<<24;
v|=(uint64_t)(*(ptr++))<<32;
v|=(uint64_t)(*(ptr++))<<40;
v|=(uint64_t)(*(ptr++))<<48;
v|=(uint64_t)(*(ptr++))<<56;
*pTimestamp=v;
ptr=record+AQH_DATAFILE_OFFSET_VALUE;
v=0;
v|=(uint64_t)(*(ptr++));
v|=(uint64_t)(*(ptr++))<<8;
v|=(uint64_t)(*(ptr++))<<16;
v|=(uint64_t)(*(ptr++))<<24;
v|=(uint64_t)(*(ptr++))<<32;
v|=(uint64_t)(*(ptr++))<<40;
v|=(uint64_t)(*(ptr++))<<48;
v|=(uint64_t)(*(ptr++))<<56;
u.i=v;
*pValue=u.f;
return 0;
}
int _writeRecord(GWEN_SYNCIO *sio, uint64_t filePos, uint64_t timestamp, double value)
{
uint8_t record[AQH_DATAFILE_RECORDSIZE];
union {double f; uint64_t i;} u;
uint8_t *ptr;
int64_t retPos;
uint64_t v;
int rv;
ptr=record+AQH_DATAFILE_OFFSET_TIMESTAMP;
v=timestamp;
*(ptr++)=(v) & 0xff;
*(ptr++)=(v>>8) & 0xff;
*(ptr++)=(v>>16) & 0xff;
*(ptr++)=(v>>24) & 0xff;
*(ptr++)=(v>>32) & 0xff;
*(ptr++)=(v>>40) & 0xff;
*(ptr++)=(v>>48) & 0xff;
*(ptr++)=(v>>56) & 0xff;
u.f=value;
v=u.i;
ptr=record+AQH_DATAFILE_OFFSET_VALUE;
*(ptr++)=(v) & 0xff;
*(ptr++)=(v>>8) & 0xff;
*(ptr++)=(v>>16) & 0xff;
*(ptr++)=(v>>24) & 0xff;
*(ptr++)=(v>>32) & 0xff;
*(ptr++)=(v>>40) & 0xff;
*(ptr++)=(v>>48) & 0xff;
*(ptr++)=(v>>56) & 0xff;
retPos=GWEN_SyncIo_File_Seek(sio, filePos, GWEN_SyncIo_File_Whence_Set);
if (retPos<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error seeking to pos %lu (%d)", (unsigned long int) filePos, (int) retPos);
return (int) retPos;
}
rv=GWEN_SyncIo_WriteForced(sio, record, AQH_DATAFILE_RECORDSIZE);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error writing to file (%d)", rv);
return rv;
}
return 0;
}
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