separated logger.c and logreader.c

This commit is contained in:
zolliker
2006-03-23 10:51:53 +00:00
parent 243896dc3f
commit 6a120b8e05

414
logreader.c Normal file
View File

@ -0,0 +1,414 @@
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <fortify.h>
#include <errno.h>
#include <dirent.h>
#include "logger.h"
#include "sics.h"
#define LOGGER_NAN -999999.
#define ONE_YEAR (366*24*3600)
typedef enum { NUMERIC, TEXT } CompType;
typedef struct {
SConnection *pCon;
char *var;
int exact;
CompType type;
time_t step;
time_t tlim;
time_t tmin, tmax, tlast, told;
float ymin, ymax, ylast, yold;
char slast[256];
char set[256];
int np;
} Compressor;
static char *dir = NULL;
static char *dir2 = NULL;
static void InitCompressor(Compressor *c, SConnection *pCon, time_t step) {
c->pCon = pCon;
c->step = step;
c->tmin = -2;
c->tmax = 0;
c->tlast = 0;
c->tlim = 0;
c->told = 0;
c->slast[0]='\0';
c->ylast = LOGGER_NAN;
}
static void OutString(Compressor *c, time_t t, char *str) {
char line[256];
/* printf("out %ld %g\n", t, y); */
if (0 != strcmp(str, c->slast)) {
snprintf(line, sizeof line, "%ld %s\n", (long)(t - c->tlast), str);
c->tlast = t;
c->slast[0]='\0';
strncat(c->slast, str, sizeof c->slast - 1);
SCWrite(c->pCon, line, eWarning);
c->np--;
}
}
static void OutFloat(Compressor *c, time_t t, float y) {
char line[80];
/* printf("out %ld %g\n", t, y); */
if (y != c->ylast || !c->exact) {
c->ylast = y;
if (y == LOGGER_NAN) {
snprintf(line, sizeof line, "%ld\n", (long)(t - c->tlast));
} else {
snprintf(line, sizeof line, "%ld %g\n", (long)(t - c->tlast), y);
}
/* printf("-%s\n", line); */
c->tlast = t;
SCWrite(c->pCon, line, eWarning);
c->np--;
}
}
static void PutValue(Compressor *c, time_t t, char *value) {
char *p;
double y;
if (c->var) {
SCPrintf(c->pCon, eWarning, "*%s exact %d\n", c->var, c->exact);
c->var = NULL;
}
if (c->type == NUMERIC) {
if (t == 0) { /* finish */
t = c->tlim + 3 * c->step;
y = 0;
} else {
y = strtod(value, &p);
if (p == value) {
y = LOGGER_NAN;
} else {
if (y == LOGGER_NAN) y *= 1.0000002;
}
}
/* printf("put %ld %g\n", t, y); */
if (c->tlim == 0) goto first;
if (t >= c->tlim) {
c->tlim += c->step;
if (c->tmin > c->tmax) {
OutFloat(c, c->tmax, c->ymax);
c->ymax = c->ymin;
c->tmax = c->tmin;
} else {
OutFloat(c, c->tmin, c->ymin);
if (c->tmin == c->tmax) goto first;
c->ymin = c->ymax;
c->tmin = c->tmax;
}
if (t >= c->tlim) {
OutFloat(c, c->tmin, c->ymin);
if (t >= c->tlim + c->step) {
OutFloat(c, c->told, c->yold);
}
goto first;
}
}
if (y <= c->ymin) {
c->ymin = y;
c->tmin = t;
} else if (y > c->ymax) {
c->ymax = y;
c->tmax = t;
}
c->yold = y;
c->told = t;
return;
first:
c->tlim = t + 2 * c->step;
c->tmin = t;
c->tmax = t;
c->ymin = y;
c->ymax = y;
return;
} else if (c->type == TEXT) {
if (t != 0) OutString(c, t, value);
}
}
/*--------------------------------------------------------------------------*/
static long getOpt(char *line, int *isdst, int *exact) {
long lxs;
char *opt;
opt = strstr(line, "isdst");
if (opt) {
sscanf(opt, "isdst %d", isdst);
}
opt = strstr(line, "exact");
if (opt) {
sscanf(opt, "exact %d", exact);
}
opt = strstr(line, "period");
if (opt) {
sscanf(opt, "period %ld", &lxs);
return lxs;
} else {
return -1;
}
}
/*--------------------------------------------------------------------------*/
static int LogReader(SConnection *pCon, SicsInterp *pSics, void *pData,
int argc, char *argv[]) {
time_t from, to, step, xs, lastt, now;
long lxs;
char *p;
int i, iarg0, l, iret, loss, np;
int inRange;
int yday=0;
time_t t, startim;
struct tm tm;
char stim[32], path[256], line[256], lastval[256];
char *lin, *val, *stp;
FILE *fil;
Compressor c;
float yy, lasty;
CompType type0;
DIR *dr;
char *opt;
int isdst;
int overflow;
/* argtolower(argc, argv); */
if (argc < 4) goto illarg;
now = time(NULL);
from = strtol(argv[1], &p, 0); /* unix time, not year 2038 safe */
if (p == argv[1]) goto illarg;
to = strtol(argv[2], NULL, 0);
if (p == argv[2]) goto illarg;
if (from < ONE_YEAR) {
from += now;
}
if (to < ONE_YEAR) {
to += now;
}
iarg0 = 4;
if (strcasecmp(argv[3],"text") == 0) { /* non-numeric values */
step = 1;
type0 = TEXT;
np = from - to + 2;
} else if (strcasecmp(argv[3],"np") == 0) { /* max. number of points */
type0 = NUMERIC;
iarg0 = 5;
np = strtol(argv[4], NULL, 0);
if (to <= from) {
step = 1;
} else if (np <= 2) {
step = to - from;
} else {
step = (to - from) / (np - 2) + 1;
}
} else {
step = strtol(argv[3], NULL, 0);
if (step <= 0) step = 1;
type0 = NUMERIC;
np = (from - to) / step + 2;
}
if (p == argv[3]) goto illarg;
if (step <= 0) step = 1;
snprintf(line, sizeof line, "%ld\n", (long)now);
SCWrite(pCon, line, eWarning);
if (dir == NULL) {
dir = IFindOption(pSICSOptions, "LoggerDir");
if (dir == NULL) {
SCWrite(pCon, "LoggerDir not found", eError);
return 0;
}
LoggerSetDir(dir);
}
if (dir2 == NULL) {
dir2 = IFindOption(pSICSOptions, "LoggerDir2");
if (dir2 == NULL) dir2="";
}
loss = 0;
overflow = 0;
for (i=iarg0; i<argc; i++) {
startim = from;
t = 0;
lastt = 0;
inRange = 0;
xs = step;
InitCompressor(&c, pCon, step);
c.var = argv[i];
c.type = type0;
c.np = np;
l = LoggerVarPath(dir, path, sizeof path, c.var);
dr = opendir(path);
if (dr) {
closedir(dr);
} else {
l = LoggerVarPath(dir2, path, sizeof path, c.var);
dr = opendir(path);
if (dr) {
closedir(dr);
}
}
isdst = -1;
fil = NULL;
while (startim <= to && c.tlast <= to) {
tm = *localtime(&startim);
if (tm.tm_yday != yday) {
if (fil != NULL) { /* close file if day changed */
fclose(fil);
fil=NULL;
}
}
if (fil == NULL) {
yday = tm.tm_yday;
strftime(path + l, sizeof path - l, "%m-%d.log", &tm);
fil = fopen(path, "r");
if (fil != NULL) { /* check if file is from the given year */
strftime(stim, sizeof stim, "#%Y-%m-%d", &tm);
fgets(line, sizeof line, fil);
if (0 != strncmp(line, stim, 11)) {
fclose(fil);
fil = NULL;
} else {
lxs = getOpt(line, &isdst, &c.exact);
if (lxs >= 0) {
if (lxs == 0) {
c.type = TEXT;
} else {
c.type = type0;
xs = lxs;
}
if (xs < step) {
loss = 1;
xs = step;
}
}
}
}
}
if (fil == NULL) {
lin = NULL;
} else {
do {
lin = fgets(line, sizeof line, fil);
/* printf("%s\n", line); */
if (lin == NULL) break;
if (line[0] == '#') {
lxs = getOpt(line, &isdst, &c.exact);
if (lxs >= 0) {
if (lxs == 0) {
c.type = TEXT;
} else {
c.type = type0;
xs = lxs;
}
if (xs < step) {
loss = 1;
xs = step;
}
}
lin[0]='\0';
} else {
p = strchr(line, '\n'); if (p) *p='\0';
p = strchr(line, '#'); if (p) *p='\0';
}
} while (lin[0] == '\0');
}
if (lin != NULL) {
/* printf(" %s\n", line); */
p = strchr(line, '\t');
if (p) {
*p='\0';
val = p+1;
} else {
val = "";
}
p = strchr(val, '\t');
if (p) {
stp = p+1;
*p='\0';
iret = sscanf(stp, "%ld", &lxs);
if (iret == 1) {
if (lxs == 0) {
c.type = TEXT;
} else {
c.type = type0;
xs = lxs;
}
if (xs < step) {
loss = 1;
xs = step;
}
}
}
iret = sscanf(line, "%d:%d:%d", &tm.tm_hour, &tm.tm_min, &tm.tm_sec);
if (iret != 3) {
lin = NULL;
} else {
tm.tm_isdst = isdst;
t=mktime(&tm);
if (!inRange) {
if (t < startim) {
lastval[0]='\0';
strncat(lastval, val, sizeof lastval - 1);
lastt = t;
} else {
inRange=1;
if (lastt != 0) {
PutValue(&c, lastt, lastval);
}
PutValue(&c, t, val);
}
} else {
PutValue(&c, t, val);
}
}
}
if (lin == NULL) {
tm.tm_hour = 24; /* try next day */
tm.tm_min = 0;
tm.tm_sec = 0;
tm.tm_isdst = -1;
startim=mktime(&tm);
continue;
}
}
if (!inRange) {
if (lastt != 0) {
PutValue(&c, lastt, lastval);
}
}
c.ylast = LOGGER_NAN; /* force output of last value */
PutValue(&c, 0, ""); /* finish */
if (fil) {
fclose(fil);
fil = NULL;
}
if (c.np < 0) overflow = 1;
}
snprintf(line, sizeof line, "*%d %d\n", loss, overflow);
SCWrite(pCon, line, eWarning);
return 1;
illarg:
SCWrite(pCon, "illegal argument(s)", eError);
return 0;
}
/*--------------------------------------------------------------------------*/
static void KillLogReader(void *data) {
Logger *p, *next;
KillDummy(data);
LoggerFreeAll();
}
/*--------------------------------------------------------------------------*/
void LogReaderInit(void) {
AddCommand(pServ->pSics,"Graph",LogReader,KillLogReader,NULL);
}