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Condensed functions for GetDataPoints to only use one.

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Keep HandleGetLastData for now (for older clients).
This commit is contained in:
Martin Preuss
2023-10-18 15:27:53 +02:00
parent a3f866f69c
commit f0cfbfccc4
8 changed files with 183 additions and 31 deletions
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77
aqhome/data/storage.c
View File

@@ -311,9 +311,9 @@ uint64_t *AQH_Storage_GetDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t
}
numEntries=AQH_DataFile_GetNumberOfEntries(df);
if (fromTime==0 && toTime==0)
arrayLen=numEntries+1;
arrayLen=(numEntries*2)+1;
else
arrayLen=AQH_STORAGE_DATAPOINTS_STEPS+1;
arrayLen=(AQH_STORAGE_DATAPOINTS_STEPS*2)+1;
if (arrayLen>maxArrayLen+1)
arrayLen=maxArrayLen+1;
@@ -330,17 +330,15 @@ uint64_t *AQH_Storage_GetDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t
uint64_t ts;
int rv;
DBG_DEBUG(NULL, "Reading record %lu", (unsigned long int) i);
rv=AQH_DataFile_ReadRecord(df, i, &ts, &(u.f));
if (rv<0) {
DBG_ERROR(AQH_LOGDOMAIN, "here (%d)", rv);
free(arrayPtr);
return NULL;
}
DBG_DEBUG(NULL, "Read record %lu (%lu - %lf)", (unsigned long int) i, (unsigned long int) ts, u.f);
if ((fromTime==0 || ts>=fromTime) && (toTime==0 || ts<=toTime)) {
if (arrayPos>maxArrayLen) {
if ((arrayPos+1)>maxArrayLen) {
DBG_INFO(AQH_LOGDOMAIN, "Limit for number of returned entries reached");
break;
}
@@ -348,7 +346,7 @@ uint64_t *AQH_Storage_GetDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t
uint64_t newArrayLen;
void *p;
newArrayLen=arrayLen+AQH_STORAGE_DATAPOINTS_STEPS;
newArrayLen=arrayLen+(AQH_STORAGE_DATAPOINTS_STEPS*2);
if (newArrayLen>maxArrayLen+1)
newArrayLen=maxArrayLen+1;
if (newArrayLen==arrayLen) {
@@ -367,9 +365,6 @@ uint64_t *AQH_Storage_GetDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t
arrayPtr[arrayPos++]=ts;
arrayPtr[arrayPos++]=u.i;
}
else {
DBG_DEBUG(NULL, "Entry %lu does not match", (unsigned long int) i);
}
} /* for */
if (arrayPos<=1) {
@@ -384,6 +379,70 @@ uint64_t *AQH_Storage_GetDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t
uint64_t *AQH_Storage_GetLastNDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t maxDataPointsRequested)
{
AQH_DATAFILE *df;
uint64_t numEntries;
uint64_t numOfDataEntries;
uint64_t arrayLen;
uint64_t arrayPos;
uint64_t *arrayPtr;
uint64_t firstRecord;
uint64_t i;
df=_getDataFileByValueId(sto, valueId);
if (df==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "No file for value id %lu", (unsigned long int) valueId);
return NULL;
}
numEntries=AQH_DataFile_GetNumberOfEntries(df);
numOfDataEntries=numEntries-1; /* first entry is reserved, don't count it here */
if (numOfDataEntries<1) {
DBG_INFO(AQH_LOGDOMAIN, "No data records for value id %lu", (unsigned long int) valueId);
return NULL;
}
if (numOfDataEntries>maxDataPointsRequested) { /* more entries in file than requested */
arrayLen=(maxDataPointsRequested*2)+1; /* +1 because the first array entry contains the number of entries */
firstRecord=1+(numOfDataEntries-maxDataPointsRequested);
}
else {
arrayLen=(numOfDataEntries*2)+1;
firstRecord=1;
}
arrayPtr=(uint64_t*) malloc(arrayLen*sizeof(uint64_t));
if (arrayPtr==NULL) {
DBG_ERROR(AQH_LOGDOMAIN, "Not enough memory for %lu entries", (unsigned long int) arrayLen);
return NULL;
}
arrayPos=1;
for (i=firstRecord; i<numEntries; i++) {
union {double f; uint64_t i;} u;
uint64_t ts;
int rv;
rv=AQH_DataFile_ReadRecord(df, i, &ts, &(u.f));
if (rv<0) {
DBG_ERROR(AQH_LOGDOMAIN, "here (%d)", rv);
free(arrayPtr);
return NULL;
}
if ((arrayPos+1)>=arrayLen) {
DBG_INFO(AQH_LOGDOMAIN, "Requested number of entries reached");
break;
}
arrayPtr[arrayPos++]=ts;
arrayPtr[arrayPos++]=u.i;
} /* for */
arrayPtr[0]=arrayPos-1;
return arrayPtr;
}
int AQH_Storage_GetLastDataPoint(AQH_STORAGE *sto, uint64_t valueId, uint64_t *pTimestamp, double *pValue)
{
AQH_DATAFILE *df;

1
aqhome/data/storage.h
View File

@@ -79,6 +79,7 @@ AQHOME_API uint64_t *AQH_Storage_GetDataPoints(AQH_STORAGE *sto, uint64_t valueI
uint64_t fromTime, uint64_t toTime,
uint64_t maxArrayLen);
AQHOME_API int AQH_Storage_GetLastDataPoint(AQH_STORAGE *sto, uint64_t valueId, uint64_t *pTimestamp, double *pValue);
AQHOME_API uint64_t *AQH_Storage_GetLastNDataPoints(AQH_STORAGE *sto, uint64_t valueId, uint64_t maxDataPointsRequested);