martin/aqhomecontrol
Public Access
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Files
2b733a52ca8515a3c9a8d0a8a8a793e0ec7d7b0f
aqhomecontrol/aqhome/data/datafile.c

402 lines
9.3 KiB
C
Raw Blame History

/****************************************************************************
* 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 "./datafile_p.h"
#include <gwenhywfar/debug.h>
#include <gwenhywfar/syncio_file.h>
#include <unistd.h>
GWEN_LIST_FUNCTIONS(AQH_DATAFILE, AQH_DataFile);
/* ------------------------------------------------------------------------------------------------
* forward declarations
* ------------------------------------------------------------------------------------------------
*/
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_DataFile_new(const char *fileName, uint64_t valueId)
{
AQH_DATAFILE *df;
GWEN_NEW_OBJECT(AQH_DATAFILE, df);
GWEN_LIST_INIT(AQH_DATAFILE, df);
df->valueId=valueId;
df->fileName=fileName?strdup(fileName):NULL;
return df;
}
void AQH_DataFile_free(AQH_DATAFILE *df)
{
if (df) {
GWEN_LIST_FINI(AQH_DATAFILE, df);
GWEN_SyncIo_free(df->sio);
free(df->fileName);
GWEN_FREE_OBJECT(df);
}
}
const char *AQH_DataFile_GetFileName(const AQH_DATAFILE *df)
{
return df?df->fileName:NULL;
}
uint64_t AQH_DataFile_GetValueId(const AQH_DATAFILE *df)
{
return df?df->valueId:0;
}
uint64_t AQH_DataFile_GetNumberOfEntries(const AQH_DATAFILE *df)
{
return df?df->numberOfEntries:0;
}
uint32_t AQH_DataFile_GetRuntimeFlags(const AQH_DATAFILE *df)
{
return df?df->runtimeFlags:0;
}
int AQH_DataFile_Create(AQH_DATAFILE *df)
{
if (df) {
GWEN_SYNCIO *sio;
int rv;
if (df->sio) {
DBG_ERROR(AQH_LOGDOMAIN, "File already open");
return GWEN_ERROR_INVALID;
}
sio=GWEN_SyncIo_File_new(df->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)", df->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
rv=_writeRecord(sio, 0, 0, 0.0);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error adding first record to file \"%s\" (%d)", df->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
df->sio=sio;
df->numberOfEntries=1; /* we just added the 0-record */
DBG_INFO(AQH_LOGDOMAIN, "File \"%s\" created.", df->fileName);
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int AQH_DataFile_Open(AQH_DATAFILE *df)
{
if (df) {
GWEN_SYNCIO *sio;
int rv;
int64_t len;
if (df->sio) {
DBG_ERROR(AQH_LOGDOMAIN, "File already open");
return GWEN_ERROR_INVALID;
}
sio=GWEN_SyncIo_File_new(df->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 creating file \"%s\" (%d)", df->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)", df->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
if (len % AQH_DATAFILE_RECORDSIZE) {
DBG_INFO(AQH_LOGDOMAIN, "Invalid file size of file \"%s\" ((not a multiple of current record size))", df->fileName);
GWEN_SyncIo_Disconnect(sio);
GWEN_SyncIo_free(sio);
unlink(df->fileName);
return GWEN_ERROR_BAD_DATA;
}
df->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)", df->fileName, rv);
GWEN_SyncIo_free(sio);
return rv;
}
df->sio=sio;
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int AQH_DataFile_Close(AQH_DATAFILE *df)
{
if (df) {
int rv;
if (df->sio==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "File not open");
return GWEN_ERROR_INVALID;
}
rv=GWEN_SyncIo_Disconnect(df->sio);
if (rv<0) {
DBG_ERROR(AQH_LOGDOMAIN, "Error closing file \"%s\" (%d)", df->fileName, rv);
GWEN_SyncIo_free(df->sio);
df->sio=NULL;
df->numberOfEntries=0;
return rv;
}
GWEN_SyncIo_free(df->sio);
df->sio=NULL;
df->numberOfEntries=0;
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int AQH_DataFile_ReadRecord(AQH_DATAFILE *df, uint64_t idx, uint64_t *pTimestamp, double *pValue)
{
if (df) {
int rv;
if (df->sio==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "File not open");
return GWEN_ERROR_INVALID;
}
rv=_readRecord(df->sio, idx, pTimestamp, pValue);;
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error writing to file \"%s\" (%d)", df->fileName, rv);
return rv;
}
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
int AQH_DataFile_AppendRecord(AQH_DATAFILE *df, uint64_t timestamp, double value)
{
if (df) {
int rv;
uint64_t filePos;
if (df->sio==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "File not open");
return GWEN_ERROR_INVALID;
}
filePos=(df->numberOfEntries)*AQH_DATAFILE_RECORDSIZE;
rv=_writeRecord(df->sio, filePos, timestamp, value);
if (rv<0) {
DBG_INFO(AQH_LOGDOMAIN, "Error writing to file \"%s\" (%d)", df->fileName, rv);
return rv;
}
df->numberOfEntries++;
DBG_INFO(AQH_LOGDOMAIN, "File \"%s\" has now %lu entries", df->fileName, (unsigned long int) (df->numberOfEntries));
return 0;
}
else {
DBG_ERROR(AQH_LOGDOMAIN, "Nullpointer");
return GWEN_ERROR_GENERIC;
}
}
AQH_DATAFILE *AQH_DataFile_List_GetByValueId(AQH_DATAFILE_LIST *fileList, uint64_t id)
{
if (fileList) {
AQH_DATAFILE *df;
df=AQH_DataFile_List_First(fileList);
while(df) {
if (df->valueId==id)
return df;
df=AQH_DataFile_List_Next(df);
}
}
return NULL;
}
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;
}
Reference in New Issue View Git Blame Copy Permalink