+/*****************************************************************************
+ * RRDtool 1.0.33 Copyright Tobias Oetiker, 1997 - 2000
+ *****************************************************************************
+ * rrd_update.c RRD Update Function
+ *****************************************************************************
+ * $Id$
+ * $Log$
+ * Revision 1.3 2001/03/04 13:01:56 oetiker
+ * Aberrant Behavior Detection support. A brief overview added to rrdtool.pod.
+ * Major updates to rrd_update.c, rrd_create.c. Minor update to other core files.
+ * This is backwards compatible! But new files using the Aberrant stuff are not readable
+ * by old rrdtool versions. See http://cricket.sourceforge.net/aberrant/rrd_hw.htm
+ * -- Jake Brutlag <jakeb@corp.webtv.net>
+ *
+ * Revision 1.2 2001/03/04 11:14:25 oetiker
+ * added at-style-time@value:value syntax to rrd_update
+ * -- Dave Bodenstab <imdave@mcs.net>
+ * Revision 1.1 2001/02/25 22:25:06 oetiker
+ * Initial revision
+ *
+ *****************************************************************************/
+
+#include "rrd_tool.h"
+#include <sys/types.h>
+#include <fcntl.h>
+
+#ifdef WIN32
+ #include <sys/locking.h>
+ #include <sys/stat.h>
+ #include <io.h>
+#endif
+
+/* Prototypes */
+int LockRRD(FILE *rrd_file);
+void write_RRA_row (rrd_t *rrd, unsigned long rra_idx, unsigned long *rra_current,
+ unsigned short CDP_scratch_idx, FILE *rrd_file);
+
+/*#define DEBUG */
+
+#define IFDNAN(X,Y) (isnan(X) ? (Y) : (X));
+
+
+#ifdef STANDALONE
+int
+main(int argc, char **argv){
+ rrd_update(argc,argv);
+ if (rrd_test_error()) {
+ printf("RRDtool 1.0.33 Copyright 1997-2000 by Tobias Oetiker <tobi@oetiker.ch>\n\n"
+ "Usage: rrdupdate filename\n"
+ "\t\t\t[--template|-t ds-name:ds-name:...]\n"
+ "\t\t\ttime|N:value[:value...]\n\n"
+ "\t\t\tat-time@value[:value...]\n\n"
+ "\t\t\t[ time:value[:value...] ..]\n\n");
+
+ printf("ERROR: %s\n",rrd_get_error());
+ rrd_clear_error();
+ return 1;
+ }
+ return 0;
+}
+#endif
+
+int
+rrd_update(int argc, char **argv)
+{
+
+ int arg_i = 2;
+ short j;
+ long i,ii,iii=1;
+
+ unsigned long rra_begin; /* byte pointer to the rra
+ * area in the rrd file. this
+ * pointer never changes value */
+ unsigned long rra_start; /* byte pointer to the rra
+ * area in the rrd file. this
+ * pointer changes as each rrd is
+ * processed. */
+ unsigned long rra_current; /* byte pointer to the current write
+ * spot in the rrd file. */
+ unsigned long rra_pos_tmp; /* temporary byte pointer. */
+ unsigned long interval,
+ pre_int,post_int; /* interval between this and
+ * the last run */
+ unsigned long proc_pdp_st; /* which pdp_st was the last
+ * to be processed */
+ unsigned long occu_pdp_st; /* when was the pdp_st
+ * before the last update
+ * time */
+ unsigned long proc_pdp_age; /* how old was the data in
+ * the pdp prep area when it
+ * was last updated */
+ unsigned long occu_pdp_age; /* how long ago was the last
+ * pdp_step time */
+ rrd_value_t *pdp_new; /* prepare the incoming data
+ * to be added the the
+ * existing entry */
+ rrd_value_t *pdp_temp; /* prepare the pdp values
+ * to be added the the
+ * cdp values */
+
+ long *tmpl_idx; /* index representing the settings
+ transported by the template index */
+ long tmpl_cnt = 2; /* time and data */
+
+ FILE *rrd_file;
+ rrd_t rrd;
+ time_t current_time = time(NULL);
+ char **updvals;
+ int schedule_smooth = 0;
+ char *template = NULL;
+ rrd_value_t *seasonal_coef = NULL, *last_seasonal_coef = NULL;
+ /* a vector of future Holt-Winters seasonal coefs */
+ unsigned long elapsed_pdp_st;
+ /* number of elapsed PDP steps since last update */
+ unsigned long *rra_step_cnt = NULL;
+ /* number of rows to be updated in an RRA for a data
+ * value. */
+ unsigned long start_pdp_offset;
+ /* number of PDP steps since the last update that
+ * are assigned to the first CDP to be generated
+ * since the last update. */
+ unsigned short scratch_idx;
+ /* index into the CDP scratch array */
+ enum cf_en current_cf;
+ /* numeric id of the current consolidation function */
+
+ while (1) {
+ static struct option long_options[] =
+ {
+ {"template", required_argument, 0, 't'},
+ {0,0,0,0}
+ };
+ int option_index = 0;
+ int opt;
+ opt = getopt_long(argc, argv, "t:",
+ long_options, &option_index);
+
+ if (opt == EOF)
+ break;
+
+ switch(opt) {
+ case 't':
+ template = optarg;
+ break;
+
+ case '?':
+ rrd_set_error("unknown option '%s'",argv[optind-1]);
+ rrd_free(&rrd);
+ return(-1);
+ }
+ }
+
+ /* need at least 2 arguments: filename, data. */
+ if (argc-optind < 2) {
+ rrd_set_error("Not enough arguments");
+ return -1;
+ }
+
+ if(rrd_open(argv[optind],&rrd_file,&rrd, RRD_READWRITE)==-1){
+ return -1;
+ }
+ rra_current = rra_start = rra_begin = ftell(rrd_file);
+ /* This is defined in the ANSI C standard, section 7.9.5.3:
+
+ When a file is opened with udpate mode ('+' as the second
+ or third character in the ... list of mode argument
+ variables), both input and ouptut may be performed on the
+ associated stream. However, ... input may not be directly
+ followed by output without an intervening call to a file
+ positioning function, unless the input oepration encounters
+ end-of-file. */
+ fseek(rrd_file, 0, SEEK_CUR);
+
+
+ /* get exclusive lock to whole file.
+ * lock gets removed when we close the file.
+ */
+ if (LockRRD(rrd_file) != 0) {
+ rrd_set_error("could not lock RRD");
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if((updvals = malloc( sizeof(char*) * (rrd.stat_head->ds_cnt+1)))==NULL){
+ rrd_set_error("allocating updvals pointer array");
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if ((pdp_temp = malloc(sizeof(rrd_value_t)
+ *rrd.stat_head->ds_cnt))==NULL){
+ rrd_set_error("allocating pdp_temp ...");
+ free(updvals);
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if ((tmpl_idx = malloc(sizeof(unsigned long)
+ *(rrd.stat_head->ds_cnt+1)))==NULL){
+ rrd_set_error("allocating tmpl_idx ...");
+ free(pdp_temp);
+ free(updvals);
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+ /* initialize template redirector */
+ /* default config
+ tmpl_idx[0] -> 0; (time)
+ tmpl_idx[1] -> 1; (DS 0)
+ tmpl_idx[2] -> 2; (DS 1)
+ tmpl_idx[3] -> 3; (DS 2)
+ ... */
+ for (i=0;i<=rrd.stat_head->ds_cnt;i++) tmpl_idx[i]=i;
+ tmpl_cnt=rrd.stat_head->ds_cnt+1;
+ if (template) {
+ char *dsname;
+ int tmpl_len;
+ dsname = template;
+ tmpl_cnt = 1; /* the first entry is the time */
+ tmpl_len = strlen(template);
+ for(i=0;i<=tmpl_len ;i++) {
+ if (template[i] == ':' || template[i] == '\0') {
+ template[i] = '\0';
+ if (tmpl_cnt>rrd.stat_head->ds_cnt){
+ rrd_set_error("Template contains more DS definitions than RRD");
+ free(updvals); free(pdp_temp);
+ free(tmpl_idx); rrd_free(&rrd);
+ fclose(rrd_file); return(-1);
+ }
+ if ((tmpl_idx[tmpl_cnt++] = ds_match(&rrd,dsname)) == -1){
+ rrd_set_error("unknown DS name '%s'",dsname);
+ free(updvals); free(pdp_temp);
+ free(tmpl_idx); rrd_free(&rrd);
+ fclose(rrd_file); return(-1);
+ } else {
+ /* the first element is always the time */
+ tmpl_idx[tmpl_cnt-1]++;
+ /* go to the next entry on the template */
+ dsname = &template[i+1];
+ /* fix the damage we did before */
+ if (i<tmpl_len) {
+ template[i]=':';
+ }
+
+ }
+ }
+ }
+ }
+ if ((pdp_new = malloc(sizeof(rrd_value_t)
+ *rrd.stat_head->ds_cnt))==NULL){
+ rrd_set_error("allocating pdp_new ...");
+ free(updvals);
+ free(pdp_temp);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ /* loop through the arguments. */
+ for(arg_i=optind+1; arg_i<argc;arg_i++) {
+ char *stepper = malloc((strlen(argv[arg_i])+1)*sizeof(char));
+ char *step_start = stepper;
+ char *p;
+ char *parsetime_error = NULL;
+ enum {atstyle, normal} timesyntax;
+ struct time_value ds_tv;
+ if (stepper == NULL){
+ rrd_set_error("failed duplication argv entry");
+ free(updvals);
+ free(pdp_temp);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+ /* initialize all ds input to unknown except the first one
+ which has always got to be set */
+ for(ii=1;ii<=rrd.stat_head->ds_cnt;ii++) updvals[ii] = "U";
+ strcpy(stepper,argv[arg_i]);
+ updvals[0]=stepper;
+ /* separate all ds elements; first must be examined separately
+ due to alternate time syntax */
+ if ((p=strchr(stepper,'@'))!=NULL) {
+ timesyntax = atstyle;
+ *p = '\0';
+ stepper = p+1;
+ } else if ((p=strchr(stepper,':'))!=NULL) {
+ timesyntax = normal;
+ *p = '\0';
+ stepper = p+1;
+ } else {
+ rrd_set_error("expected timestamp not found in data source from %s:...",
+ argv[arg_i]);
+ free(step_start);
+ break;
+ }
+ ii=1;
+ updvals[tmpl_idx[ii]] = stepper;
+ while (*stepper) {
+ if (*stepper == ':') {
+ *stepper = '\0';
+ ii++;
+ if (ii<tmpl_cnt){
+ updvals[tmpl_idx[ii]] = stepper+1;
+ }
+ }
+ stepper++;
+ }
+
+ if (ii != tmpl_cnt-1) {
+ rrd_set_error("expected %lu data source readings (got %lu) from %s:...",
+ tmpl_cnt-1, ii, argv[arg_i]);
+ free(step_start);
+ break;
+ }
+
+ /* get the time from the reading ... handle N */
+ if (timesyntax == atstyle) {
+ if ((parsetime_error = parsetime(updvals[0], &ds_tv))) {
+ rrd_set_error("ds time: %s: %s", updvals[0], parsetime_error );
+ free(step_start);
+ break;
+ }
+ if (ds_tv.type == RELATIVE_TO_END_TIME ||
+ ds_tv.type == RELATIVE_TO_START_TIME) {
+ rrd_set_error("specifying time relative to the 'start' "
+ "or 'end' makes no sense here: %s",
+ updvals[0]);
+ free(step_start);
+ break;
+ }
+
+ current_time = mktime(&ds_tv.tm) + ds_tv.offset;
+ } else if (strcmp(updvals[0],"N")==0){
+ current_time = time(NULL);
+ } else {
+ current_time = atol(updvals[0]);
+ }
+
+ if(current_time <= rrd.live_head->last_up){
+ rrd_set_error("illegal attempt to update using time %ld when "
+ "last update time is %ld (minimum one second step)",
+ current_time, rrd.live_head->last_up);
+ free(step_start);
+ break;
+ }
+
+
+ /* seek to the beginning of the rra's */
+ if (rra_current != rra_begin) {
+ if(fseek(rrd_file, rra_begin, SEEK_SET) != 0) {
+ rrd_set_error("seek error in rrd");
+ free(step_start);
+ break;
+ }
+ rra_current = rra_begin;
+ }
+ rra_start = rra_begin;
+
+ /* when was the current pdp started */
+ proc_pdp_age = rrd.live_head->last_up % rrd.stat_head->pdp_step;
+ proc_pdp_st = rrd.live_head->last_up - proc_pdp_age;
+
+ /* when did the last pdp_st occur */
+ occu_pdp_age = current_time % rrd.stat_head->pdp_step;
+ occu_pdp_st = current_time - occu_pdp_age;
+ interval = current_time - rrd.live_head->last_up;
+
+ if (occu_pdp_st > proc_pdp_st){
+ /* OK we passed the pdp_st moment*/
+ pre_int = occu_pdp_st - rrd.live_head->last_up; /* how much of the input data
+ * occurred before the latest
+ * pdp_st moment*/
+ post_int = occu_pdp_age; /* how much after it */
+ } else {
+ pre_int = interval;
+ post_int = 0;
+ }
+
+#ifdef DEBUG
+ printf(
+ "proc_pdp_age %lu\t"
+ "proc_pdp_st %lu\t"
+ "occu_pfp_age %lu\t"
+ "occu_pdp_st %lu\t"
+ "int %lu\t"
+ "pre_int %lu\t"
+ "post_int %lu\n", proc_pdp_age, proc_pdp_st,
+ occu_pdp_age, occu_pdp_st,
+ interval, pre_int, post_int);
+#endif
+
+ /* process the data sources and update the pdp_prep
+ * area accordingly */
+ for(i=0;i<rrd.stat_head->ds_cnt;i++){
+ enum dst_en dst_idx;
+ dst_idx= dst_conv(rrd.ds_def[i].dst);
+ if((updvals[i+1][0] != 'U') &&
+ rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt >= interval) {
+ double rate = DNAN;
+ /* the data source type defines how to process the data */
+ /* pdp_temp contains rate * time ... eg the bytes
+ * transferred during the interval. Doing it this way saves
+ * a lot of math operations */
+
+
+ switch(dst_idx){
+ case DST_COUNTER:
+ case DST_DERIVE:
+ if(rrd.pdp_prep[i].last_ds[0] != 'U'){
+ pdp_new[i]= rrd_diff(updvals[i+1],rrd.pdp_prep[i].last_ds);
+ if(dst_idx == DST_COUNTER) {
+ /* simple overflow catcher sugestet by andres kroonmaa */
+ /* this will fail terribly for non 32 or 64 bit counters ... */
+ /* are there any others in SNMP land ? */
+ if (pdp_new[i] < (double)0.0 )
+ pdp_new[i] += (double)4294967296.0 ; /* 2^32 */
+ if (pdp_new[i] < (double)0.0 )
+ pdp_new[i] += (double)18446744069414584320.0; /* 2^64-2^32 */;
+ }
+ rate = pdp_new[i] / interval;
+ }
+ else {
+ pdp_new[i]= DNAN;
+ }
+ break;
+ case DST_ABSOLUTE:
+ pdp_new[i]= atof(updvals[i+1]);
+ rate = pdp_new[i] / interval;
+ break;
+ case DST_GAUGE:
+ pdp_new[i] = atof(updvals[i+1]) * interval;
+ rate = pdp_new[i] / interval;
+ break;
+ default:
+ rrd_set_error("rrd contains unknown DS type : '%s'",
+ rrd.ds_def[i].dst);
+ break;
+ }
+ /* break out of this for loop if the error string is set */
+ if (rrd_test_error()){
+ break;
+ }
+ /* make sure pdp_temp is neither too large or too small
+ * if any of these occur it becomes unknown ...
+ * sorry folks ... */
+ if ( ! isnan(rate) &&
+ (( ! isnan(rrd.ds_def[i].par[DS_max_val].u_val) &&
+ rate > rrd.ds_def[i].par[DS_max_val].u_val ) ||
+ ( ! isnan(rrd.ds_def[i].par[DS_min_val].u_val) &&
+ rate < rrd.ds_def[i].par[DS_min_val].u_val ))){
+ pdp_new[i] = DNAN;
+ }
+ } else {
+ /* no news is news all the same */
+ pdp_new[i] = DNAN;
+ }
+
+ /* make a copy of the command line argument for the next run */
+#ifdef DEBUG
+ fprintf(stderr,
+ "prep ds[%lu]\t"
+ "last_arg '%s'\t"
+ "this_arg '%s'\t"
+ "pdp_new %10.2f\n",
+ i,
+ rrd.pdp_prep[i].last_ds,
+ updvals[i+1], pdp_new[i]);
+#endif
+ if(dst_idx == DST_COUNTER || dst_idx == DST_DERIVE){
+ strncpy(rrd.pdp_prep[i].last_ds,
+ updvals[i+1],LAST_DS_LEN-1);
+ rrd.pdp_prep[i].last_ds[LAST_DS_LEN-1]='\0';
+ }
+ }
+ /* break out of the argument parsing loop if the error_string is set */
+ if (rrd_test_error()){
+ free(step_start);
+ break;
+ }
+ /* has a pdp_st moment occurred since the last run ? */
+
+ if (proc_pdp_st == occu_pdp_st){
+ /* no we have not passed a pdp_st moment. therefore update is simple */
+
+ for(i=0;i<rrd.stat_head->ds_cnt;i++){
+ if(isnan(pdp_new[i]))
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt += interval;
+ else
+ rrd.pdp_prep[i].scratch[PDP_val].u_val+= pdp_new[i];
+#ifdef DEBUG
+ fprintf(stderr,
+ "NO PDP ds[%lu]\t"
+ "value %10.2f\t"
+ "unkn_sec %5lu\n",
+ i,
+ rrd.pdp_prep[i].scratch[PDP_val].u_val,
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt);
+#endif
+ }
+ } else {
+ /* an pdp_st has occurred. */
+
+ /* in pdp_prep[].scratch[PDP_val].u_val we have collected rate*seconds which
+ * occurred up to the last run.
+ pdp_new[] contains rate*seconds from the latest run.
+ pdp_temp[] will contain the rate for cdp */
+
+
+ for(i=0;i<rrd.stat_head->ds_cnt;i++){
+ /* update pdp_prep to the current pdp_st */
+ if(isnan(pdp_new[i]))
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt += pre_int;
+ else
+ rrd.pdp_prep[i].scratch[PDP_val].u_val +=
+ pdp_new[i]/(double)interval*(double)pre_int;
+
+ /* if too much of the pdp_prep is unknown we dump it */
+ if ((rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt
+ > rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt) ||
+ (occu_pdp_st-proc_pdp_st <=
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt)) {
+ pdp_temp[i] = DNAN;
+ } else {
+ pdp_temp[i] = rrd.pdp_prep[i].scratch[PDP_val].u_val
+ / (double)( occu_pdp_st
+ - proc_pdp_st
+ - rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt);
+ }
+ /* make pdp_prep ready for the next run */
+ if(isnan(pdp_new[i])){
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt = post_int;
+ rrd.pdp_prep[i].scratch[PDP_val].u_val = 0.0;
+ } else {
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt = 0;
+ rrd.pdp_prep[i].scratch[PDP_val].u_val =
+ pdp_new[i]/(double)interval*(double)post_int;
+ }
+
+#ifdef DEBUG
+ fprintf(stderr,
+ "PDP UPD ds[%lu]\t"
+ "pdp_temp %10.2f\t"
+ "new_prep %10.2f\t"
+ "new_unkn_sec %5lu\n",
+ i, pdp_temp[i],
+ rrd.pdp_prep[i].scratch[PDP_val].u_val,
+ rrd.pdp_prep[i].scratch[PDP_unkn_sec_cnt].u_cnt);
+#endif
+ }
+
+ /* compute the number of elapsed pdp_st moments */
+ elapsed_pdp_st = (occu_pdp_st - proc_pdp_st) / rrd.stat_head -> pdp_step;
+#ifdef DEBUG
+ fprintf(stderr,"elapsed PDP steps: %lu\n", elapsed_pdp_st);
+#endif
+ if (rra_step_cnt == NULL)
+ {
+ rra_step_cnt = (unsigned long *)
+ malloc((rrd.stat_head->rra_cnt)* sizeof(unsigned long));
+ }
+
+ for(i = 0, rra_start = rra_begin;
+ i < rrd.stat_head->rra_cnt;
+ rra_start += rrd.rra_def[i].row_cnt * rrd.stat_head -> ds_cnt * sizeof(rrd_value_t),
+ i++)
+ {
+ current_cf = cf_conv(rrd.rra_def[i].cf_nam);
+ start_pdp_offset = rrd.rra_def[i].pdp_cnt -
+ (proc_pdp_st / rrd.stat_head -> pdp_step) % rrd.rra_def[i].pdp_cnt;
+ if (start_pdp_offset <= elapsed_pdp_st) {
+ rra_step_cnt[i] = (elapsed_pdp_st - start_pdp_offset) /
+ rrd.rra_def[i].pdp_cnt + 1;
+ } else {
+ rra_step_cnt[i] = 0;
+ }
+
+ if (current_cf == CF_SEASONAL || current_cf == CF_DEVSEASONAL)
+ {
+ /* If this is a bulk update, we need to skip ahead in the seasonal
+ * arrays so that they will be correct for the next observed value;
+ * note that for the bulk update itself, no update will occur to
+ * DEVSEASONAL or SEASONAL; futhermore, HWPREDICT and DEVPREDICT will
+ * be set to DNAN. */
+ if (rra_step_cnt[i] > 2)
+ {
+ /* skip update by resetting rra_step_cnt[i],
+ * note that this is not data source specific; this is due
+ * to the bulk update, not a DNAN value for the specific data
+ * source. */
+ rra_step_cnt[i] = 0;
+ lookup_seasonal(&rrd,i,rra_start,rrd_file,elapsed_pdp_st,
+ &last_seasonal_coef);
+ lookup_seasonal(&rrd,i,rra_start,rrd_file,elapsed_pdp_st + 1,
+ &seasonal_coef);
+ }
+
+ /* periodically run a smoother for seasonal effects */
+ /* Need to use first cdp parameter buffer to track
+ * burnin (burnin requires a specific smoothing schedule).
+ * The CDP_init_seasonal parameter is really an RRA level,
+ * not a data source within RRA level parameter, but the rra_def
+ * is read only for rrd_update (not flushed to disk). */
+ iii = i*(rrd.stat_head -> ds_cnt);
+ if (rrd.cdp_prep[iii].scratch[CDP_init_seasonal].u_cnt
+ <= BURNIN_CYCLES)
+ {
+ if (rrd.rra_ptr[i].cur_row + elapsed_pdp_st
+ > rrd.rra_def[i].row_cnt - 1) {
+ /* mark off one of the burnin cycles */
+ ++(rrd.cdp_prep[iii].scratch[CDP_init_seasonal].u_cnt);
+ schedule_smooth = 1;
+ }
+ } else {
+ /* someone has no doubt invented a trick to deal with this
+ * wrap around, but at least this code is clear. */
+ if (rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt >
+ rrd.rra_ptr[i].cur_row)
+ {
+ /* here elapsed_pdp_st = rra_step_cnt[i] because of 1-1
+ * mapping between PDP and CDP */
+ if (rrd.rra_ptr[i].cur_row + elapsed_pdp_st
+ >= rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt)
+ {
+#ifdef DEBUG
+ fprintf(stderr,
+ "schedule_smooth 1: cur_row %lu, elapsed_pdp_st %lu, smooth idx %lu\n",
+ rrd.rra_ptr[i].cur_row, elapsed_pdp_st,
+ rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt);
+#endif
+ schedule_smooth = 1;
+ }
+ } else {
+ /* can't rely on negative numbers because we are working with
+ * unsigned values */
+ /* Don't need modulus here. If we've wrapped more than once, only
+ * one smooth is executed at the end. */
+ if (rrd.rra_ptr[i].cur_row + elapsed_pdp_st >= rrd.rra_def[i].row_cnt
+ && rrd.rra_ptr[i].cur_row + elapsed_pdp_st - rrd.rra_def[i].row_cnt
+ >= rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt)
+ {
+#ifdef DEBUG
+ fprintf(stderr,
+ "schedule_smooth 2: cur_row %lu, elapsed_pdp_st %lu, smooth idx %lu\n",
+ rrd.rra_ptr[i].cur_row, elapsed_pdp_st,
+ rrd.rra_def[i].par[RRA_seasonal_smooth_idx].u_cnt);
+#endif
+ schedule_smooth = 1;
+ }
+ }
+ }
+
+ rra_current = ftell(rrd_file);
+ } /* if cf is DEVSEASONAL or SEASONAL */
+
+ if (rrd_test_error()) break;
+
+ /* update CDP_PREP areas */
+ /* loop over data soures within each RRA */
+ for(ii = 0;
+ ii < rrd.stat_head->ds_cnt;
+ ii++)
+ {
+
+ /* iii indexes the CDP prep area for this data source within the RRA */
+ iii=i*rrd.stat_head->ds_cnt+ii;
+
+ if (rrd.rra_def[i].pdp_cnt > 1) {
+
+ if (rra_step_cnt[i] > 0) {
+ /* If we are in this block, as least 1 CDP value will be written to
+ * disk, this is the CDP_primary_val entry. If more than 1 value needs
+ * to be written, then the "fill in" value is the CDP_secondary_val
+ * entry. */
+ if (isnan(pdp_temp[ii]))
+ {
+ rrd.cdp_prep[iii].scratch[CDP_unkn_pdp_cnt].u_cnt += start_pdp_offset;
+ rrd.cdp_prep[iii].scratch[CDP_secondary_val].u_val = DNAN;
+ } else {
+ /* CDP_secondary value is the RRA "fill in" value for intermediary
+ * CDP data entries. No matter the CF, the value is the same because
+ * the average, max, min, and last of a list of identical values is
+ * the same, namely, the value itself. */
+ rrd.cdp_prep[iii].scratch[CDP_secondary_val].u_val = pdp_temp[ii];
+ }
+
+ if (rrd.cdp_prep[iii].scratch[CDP_unkn_pdp_cnt].u_cnt
+ > rrd.rra_def[i].pdp_cnt*
+ rrd.rra_def[i].par[RRA_cdp_xff_val].u_val)
+ {
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = DNAN;
+ /* initialize carry over */
+ if (current_cf == CF_AVERAGE) {
+ if (isnan(pdp_temp[ii])) {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = DNAN;
+ } else {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii] *
+ ((elapsed_pdp_st - start_pdp_offset) % rrd.rra_def[i].pdp_cnt);
+ }
+ } else {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ }
+ } else {
+ rrd_value_t cum_val, cur_val;
+ switch (current_cf) {
+ case CF_AVERAGE:
+ cum_val = IFDNAN(rrd.cdp_prep[iii].scratch[CDP_val].u_val, 0.0);
+ cur_val = IFDNAN(pdp_temp[ii],0.0);
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val =
+ (cum_val + cur_val) /
+ (rrd.rra_def[i].pdp_cnt
+ -rrd.cdp_prep[iii].scratch[CDP_unkn_pdp_cnt].u_cnt);
+ /* initialize carry over value */
+ if (isnan(pdp_temp[ii])) {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = DNAN;
+ } else {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii] *
+ ((elapsed_pdp_st - start_pdp_offset) % rrd.rra_def[i].pdp_cnt);
+ }
+ break;
+ case CF_MAXIMUM:
+ cum_val = IFDNAN(rrd.cdp_prep[iii].scratch[CDP_val].u_val, -DINF);
+ cur_val = IFDNAN(pdp_temp[ii],-DINF);
+#ifdef DEBUG
+ if (isnan(rrd.cdp_prep[iii].scratch[CDP_val].u_val) &&
+ isnan(pdp_temp[ii])) {
+ fprintf(stderr,
+ "RRA %lu, DS %lu, both CDP_val and pdp_temp are DNAN!",
+ i,ii);
+ exit(-1);
+ }
+#endif
+ if (cur_val > cum_val)
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = cur_val;
+ else
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = cum_val;
+ /* initialize carry over value */
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ break;
+ case CF_MINIMUM:
+ cum_val = IFDNAN(rrd.cdp_prep[iii].scratch[CDP_val].u_val, DINF);
+ cur_val = IFDNAN(pdp_temp[ii],DINF);
+#ifdef DEBUG
+ if (isnan(rrd.cdp_prep[iii].scratch[CDP_val].u_val) &&
+ isnan(pdp_temp[ii])) {
+ fprintf(stderr,
+ "RRA %lu, DS %lu, both CDP_val and pdp_temp are DNAN!",
+ i,ii);
+ exit(-1);
+ }
+#endif
+ if (cur_val < cum_val)
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = cur_val;
+ else
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = cum_val;
+ /* initialize carry over value */
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ break;
+ case CF_LAST:
+ default:
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = pdp_temp[ii];
+ /* initialize carry over value */
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ break;
+ }
+ } /* endif meets xff value requirement for a valid value */
+ /* initialize carry over CDP_unkn_pdp_cnt, this must after CDP_primary_val
+ * is set because CDP_unkn_pdp_cnt is required to compute that value. */
+ if (isnan(pdp_temp[ii]))
+ rrd.cdp_prep[iii].scratch[CDP_unkn_pdp_cnt].u_cnt =
+ (elapsed_pdp_st - start_pdp_offset) % rrd.rra_def[i].pdp_cnt;
+ else
+ rrd.cdp_prep[iii].scratch[CDP_unkn_pdp_cnt].u_cnt = 0;
+ } else /* rra_step_cnt[i] == 0 */
+ {
+#ifdef DEBUG
+ if (isnan(rrd.cdp_prep[iii].scratch[CDP_val].u_val)) {
+ fprintf(stderr,"schedule CDP_val update, RRA %lu DS %lu, DNAN\n",
+ i,ii);
+ } else {
+ fprintf(stderr,"schedule CDP_val update, RRA %lu DS %lu, %10.2f\n",
+ i,ii,rrd.cdp_prep[iii].scratch[CDP_val].u_val);
+ }
+#endif
+ if (isnan(pdp_temp[ii])) {
+ rrd.cdp_prep[iii].scratch[CDP_unkn_pdp_cnt].u_cnt += elapsed_pdp_st;
+ } else if (isnan(rrd.cdp_prep[iii].scratch[CDP_val].u_val))
+ {
+ if (current_cf == CF_AVERAGE) {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii] *
+ elapsed_pdp_st;
+ } else {
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ }
+#ifdef DEBUG
+ fprintf(stderr,"Initialize CDP_val for RRA %lu DS %lu: %10.2f\n",
+ i,ii,rrd.cdp_prep[iii].scratch[CDP_val].u_val);
+#endif
+ } else {
+ switch (current_cf) {
+ case CF_AVERAGE:
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val += pdp_temp[ii] *
+ elapsed_pdp_st;
+ break;
+ case CF_MINIMUM:
+ if (pdp_temp[ii] < rrd.cdp_prep[iii].scratch[CDP_val].u_val)
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ break;
+ case CF_MAXIMUM:
+ if (pdp_temp[ii] > rrd.cdp_prep[iii].scratch[CDP_val].u_val)
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ break;
+ case CF_LAST:
+ default:
+ rrd.cdp_prep[iii].scratch[CDP_val].u_val = pdp_temp[ii];
+ break;
+ }
+ }
+ }
+ } else { /* rrd.rra_def[i].pdp_cnt == 1 */
+ if (elapsed_pdp_st > 2)
+ {
+ switch (current_cf) {
+ case CF_AVERAGE:
+ default:
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val=pdp_temp[ii];
+ rrd.cdp_prep[iii].scratch[CDP_secondary_val].u_val=pdp_temp[ii];
+ break;
+ case CF_SEASONAL:
+ case CF_DEVSEASONAL:
+ /* need to update cached seasonal values, so they are consistent
+ * with the bulk update */
+ /* WARNING: code relies on the fact that CDP_hw_last_seasonal and
+ * CDP_last_deviation are the same. */
+ rrd.cdp_prep[iii].scratch[CDP_hw_last_seasonal].u_val =
+ last_seasonal_coef[ii];
+ rrd.cdp_prep[iii].scratch[CDP_hw_seasonal].u_val =
+ seasonal_coef[ii];
+ break;
+ case CF_HWPREDICT:
+ /* need to update the null_count and last_null_count.
+ * even do this for non-DNAN pdp_temp because the
+ * algorithm is not learning from batch updates. */
+ rrd.cdp_prep[iii].scratch[CDP_null_count].u_cnt +=
+ elapsed_pdp_st;
+ rrd.cdp_prep[iii].scratch[CDP_last_null_count].u_cnt +=
+ elapsed_pdp_st - 1;
+ /* fall through */
+ case CF_DEVPREDICT:
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = DNAN;
+ rrd.cdp_prep[iii].scratch[CDP_secondary_val].u_val = DNAN;
+ break;
+ case CF_FAILURES:
+ /* do not count missed bulk values as failures */
+ rrd.cdp_prep[iii].scratch[CDP_primary_val].u_val = 0;
+ rrd.cdp_prep[iii].scratch[CDP_secondary_val].u_val = 0;
+ /* need to reset violations buffer.
+ * could do this more carefully, but for now, just
+ * assume a bulk update wipes away all violations. */
+ erase_violations(&rrd, iii, i);
+ break;
+ }
+ }
+ } /* endif rrd.rra_def[i].pdp_cnt == 1 */
+
+ if (rrd_test_error()) break;
+
+ } /* endif data sources loop */
+ } /* end RRA Loop */
+
+ /* this loop is only entered if elapsed_pdp_st < 3 */
+ for (j = elapsed_pdp_st, scratch_idx = CDP_primary_val;
+ j > 0 && j < 3; j--, scratch_idx = CDP_secondary_val)
+ {
+ for(i = 0, rra_start = rra_begin;
+ i < rrd.stat_head->rra_cnt;
+ rra_start += rrd.rra_def[i].row_cnt * rrd.stat_head -> ds_cnt * sizeof(rrd_value_t),
+ i++)
+ {
+ if (rrd.rra_def[i].pdp_cnt > 1) continue;
+
+ current_cf = cf_conv(rrd.rra_def[i].cf_nam);
+ if (current_cf == CF_SEASONAL || current_cf == CF_DEVSEASONAL)
+ {
+ lookup_seasonal(&rrd,i,rra_start,rrd_file,
+ elapsed_pdp_st + (scratch_idx == CDP_primary_val ? 1 : 2),
+ &seasonal_coef);
+ }
+ if (rrd_test_error()) break;
+ /* loop over data soures within each RRA */
+ for(ii = 0;
+ ii < rrd.stat_head->ds_cnt;
+ ii++)
+ {
+ update_aberrant_CF(&rrd,pdp_temp[ii],current_cf,
+ i*(rrd.stat_head->ds_cnt) + ii,i,ii,
+ scratch_idx, seasonal_coef);
+ }
+ } /* end RRA Loop */
+ if (rrd_test_error()) break;
+ } /* end elapsed_pdp_st loop */
+
+ if (rrd_test_error()) break;
+
+ /* Ready to write to disk */
+ /* Move sequentially through the file, writing one RRA at a time.
+ * Note this architecture divorces the computation of CDP with
+ * flushing updated RRA entries to disk. */
+ for(i = 0, rra_start = rra_begin;
+ i < rrd.stat_head->rra_cnt;
+ rra_start += rrd.rra_def[i].row_cnt * rrd.stat_head -> ds_cnt * sizeof(rrd_value_t),
+ i++) {
+ /* is there anything to write for this RRA? If not, continue. */
+ if (rra_step_cnt[i] == 0) continue;
+
+ /* write the first row */
+#ifdef DEBUG
+ fprintf(stderr," -- RRA Preseek %ld\n",ftell(rrd_file));
+#endif
+ rrd.rra_ptr[i].cur_row++;
+ if (rrd.rra_ptr[i].cur_row >= rrd.rra_def[i].row_cnt)
+ rrd.rra_ptr[i].cur_row = 0; /* wrap around */
+ /* positition on the first row */
+ rra_pos_tmp = rra_start +
+ (rrd.stat_head->ds_cnt)*(rrd.rra_ptr[i].cur_row)*sizeof(rrd_value_t);
+ if(rra_pos_tmp != rra_current) {
+ if(fseek(rrd_file, rra_pos_tmp, SEEK_SET) != 0){
+ rrd_set_error("seek error in rrd");
+ break;
+ }
+ rra_current = rra_pos_tmp;
+ }
+#ifdef DEBUG
+ fprintf(stderr," -- RRA Postseek %ld\n",ftell(rrd_file));
+#endif
+ scratch_idx = CDP_primary_val;
+ write_RRA_row(&rrd, i, &rra_current, scratch_idx, rrd_file);
+ if (rrd_test_error()) break;
+
+ /* write other rows of the bulk update, if any */
+ scratch_idx = CDP_secondary_val;
+ for ( ; rra_step_cnt[i] > 1;
+ rra_step_cnt[i]--, rrd.rra_ptr[i].cur_row++)
+ {
+ if (rrd.rra_ptr[i].cur_row == rrd.rra_def[i].row_cnt)
+ {
+#ifdef DEBUG
+ fprintf(stderr,"Wraparound for RRA %s, %lu updates left\n",
+ rrd.rra_def[i].cf_nam, rra_step_cnt[i] - 1);
+#endif
+ /* wrap */
+ rrd.rra_ptr[i].cur_row = 0;
+ /* seek back to beginning of current rra */
+ if (fseek(rrd_file, rra_start, SEEK_SET) != 0)
+ {
+ rrd_set_error("seek error in rrd");
+ break;
+ }
+#ifdef DEBUG
+ fprintf(stderr," -- Wraparound Postseek %ld\n",ftell(rrd_file));
+#endif
+ rra_current = rra_start;
+ }
+ write_RRA_row(&rrd, i, &rra_current, scratch_idx, rrd_file);
+ }
+
+ if (rrd_test_error())
+ break;
+ } /* RRA LOOP */
+
+ /* break out of the argument parsing loop if error_string is set */
+ if (rrd_test_error()){
+ free(step_start);
+ break;
+ }
+
+ } /* endif a pdp_st has occurred */
+ rrd.live_head->last_up = current_time;
+ free(step_start);
+ } /* function argument loop */
+
+ if (seasonal_coef != NULL) free(seasonal_coef);
+ if (last_seasonal_coef != NULL) free(last_seasonal_coef);
+ if (rra_step_cnt != NULL) free(rra_step_cnt);
+
+ /* if we got here and if there is an error and if the file has not been
+ * written to, then close things up and return. */
+ if (rrd_test_error()) {
+ free(updvals);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ free(pdp_temp);
+ free(pdp_new);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ /* aargh ... that was tough ... so many loops ... anyway, its done.
+ * we just need to write back the live header portion now*/
+
+ if (fseek(rrd_file, (sizeof(stat_head_t)
+ + sizeof(ds_def_t)*rrd.stat_head->ds_cnt
+ + sizeof(rra_def_t)*rrd.stat_head->rra_cnt),
+ SEEK_SET) != 0) {
+ rrd_set_error("seek rrd for live header writeback");
+ free(updvals);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ free(pdp_temp);
+ free(pdp_new);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if(fwrite( rrd.live_head,
+ sizeof(live_head_t), 1, rrd_file) != 1){
+ rrd_set_error("fwrite live_head to rrd");
+ free(updvals);
+ rrd_free(&rrd);
+ free(tmpl_idx);
+ free(pdp_temp);
+ free(pdp_new);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if(fwrite( rrd.pdp_prep,
+ sizeof(pdp_prep_t),
+ rrd.stat_head->ds_cnt, rrd_file) != rrd.stat_head->ds_cnt){
+ rrd_set_error("ftwrite pdp_prep to rrd");
+ free(updvals);
+ rrd_free(&rrd);
+ free(tmpl_idx);
+ free(pdp_temp);
+ free(pdp_new);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if(fwrite( rrd.cdp_prep,
+ sizeof(cdp_prep_t),
+ rrd.stat_head->rra_cnt *rrd.stat_head->ds_cnt, rrd_file)
+ != rrd.stat_head->rra_cnt *rrd.stat_head->ds_cnt){
+
+ rrd_set_error("ftwrite cdp_prep to rrd");
+ free(updvals);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ free(pdp_temp);
+ free(pdp_new);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ if(fwrite( rrd.rra_ptr,
+ sizeof(rra_ptr_t),
+ rrd.stat_head->rra_cnt,rrd_file) != rrd.stat_head->rra_cnt){
+ rrd_set_error("fwrite rra_ptr to rrd");
+ free(updvals);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ free(pdp_temp);
+ free(pdp_new);
+ fclose(rrd_file);
+ return(-1);
+ }
+
+ /* OK now close the files and free the memory */
+ if(fclose(rrd_file) != 0){
+ rrd_set_error("closing rrd");
+ free(updvals);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ free(pdp_temp);
+ free(pdp_new);
+ return(-1);
+ }
+
+ /* calling the smoothing code here guarantees at most
+ * one smoothing operation per rrd_update call. Unfortunately,
+ * it is possible with bulk updates, or a long-delayed update
+ * for smoothing to occur off-schedule. This really isn't
+ * critical except during the burning cycles. */
+ if (schedule_smooth)
+ {
+#ifndef WIN32
+ rrd_file = fopen(argv[optind],"r+");
+#else
+ rrd_file = fopen(argv[optind],"rb+");
+#endif
+ rra_start = rra_begin;
+ for (i = 0; i < rrd.stat_head -> rra_cnt; ++i)
+ {
+ if (cf_conv(rrd.rra_def[i].cf_nam) == CF_DEVSEASONAL ||
+ cf_conv(rrd.rra_def[i].cf_nam) == CF_SEASONAL)
+ {
+#ifdef DEBUG
+ fprintf(stderr,"Running smoother for rra %ld\n",i);
+#endif
+ apply_smoother(&rrd,i,rra_start,rrd_file);
+ if (rrd_test_error())
+ break;
+ }
+ rra_start += rrd.rra_def[i].row_cnt
+ *rrd.stat_head->ds_cnt*sizeof(rrd_value_t);
+ }
+ fclose(rrd_file);
+ }
+ rrd_free(&rrd);
+ free(updvals);
+ free(tmpl_idx);
+ free(pdp_new);
+ free(pdp_temp);
+ return(0);
+}
+
+/*
+ * get exclusive lock to whole file.
+ * lock gets removed when we close the file
+ *
+ * returns 0 on success
+ */
+int
+LockRRD(FILE *rrdfile)
+{
+ int rrd_fd; /* File descriptor for RRD */
+ int stat;
+
+ rrd_fd = fileno(rrdfile);
+
+ {
+#ifndef WIN32
+ struct flock lock;
+ lock.l_type = F_WRLCK; /* exclusive write lock */
+ lock.l_len = 0; /* whole file */
+ lock.l_start = 0; /* start of file */
+ lock.l_whence = SEEK_SET; /* end of file */
+
+ stat = fcntl(rrd_fd, F_SETLK, &lock);
+#else
+ struct _stat st;
+
+ if ( _fstat( rrd_fd, &st ) == 0 ) {
+ stat = _locking ( rrd_fd, _LK_NBLCK, st.st_size );
+ } else {
+ stat = -1;
+ }
+#endif
+ }
+
+ return(stat);
+}
+
+
+void
+write_RRA_row (rrd_t *rrd, unsigned long rra_idx, unsigned long *rra_current,
+ unsigned short CDP_scratch_idx, FILE *rrd_file)
+{
+ unsigned long ds_idx, cdp_idx;
+
+ for (ds_idx = 0; ds_idx < rrd -> stat_head -> ds_cnt; ds_idx++)
+ {
+ /* compute the cdp index */
+ cdp_idx =rra_idx * (rrd -> stat_head->ds_cnt) + ds_idx;
+#ifdef DEBUG
+ fprintf(stderr," -- RRA WRITE VALUE %e, at %ld CF:%s\n",
+ rrd -> cdp_prep[cdp_idx].scratch[CDP_scratch_idx].u_val,ftell(rrd_file),
+ rrd -> rra_def[rra_idx].cf_nam);
+#endif
+
+ if(fwrite(&(rrd -> cdp_prep[cdp_idx].scratch[CDP_scratch_idx].u_val),
+ sizeof(rrd_value_t),1,rrd_file) != 1)
+ {
+ rrd_set_error("writing rrd");
+ return;
+ }
+ *rra_current += sizeof(rrd_value_t);
+ }
+}
projects / rrdtool.git / commitdiff