unsigned long *,
unsigned long *,
char ***,
- rrd_value_t **);
-
+ rrd_value_t **,
+ int);
if (status != 0) return status;
}
- if (rrd_xport_fn(&im, start, end, step, col_cnt, legend_v, data) == -1) {
+ if (rrd_xport_fn(&im, start, end, step, col_cnt, legend_v, data,0) == -1) {
im_free(&im);
return -1;
}
* will be changed to represent reality */
unsigned long *col_cnt, /* number of data columns in the result */
char ***legend_v, /* legend entries */
- rrd_value_t **data)
+ rrd_value_t **data,
+ int dolines)
{ /* two dimensional array containing the data */
int i = 0, j = 0;
if (data_calc(im) == -1)
return -1;
- /* how many xports? */
- *col_cnt = 0;
+ /* how many xports or lines/AREA/STACK ? */
+ *col_cnt = 0;
for (i = 0; i < im->gdes_c; i++) {
switch (im->gdes[i].gf) {
+ case GF_LINE:
+ case GF_AREA:
+ case GF_STACK:
+ (*col_cnt)+=dolines;
+ break;
case GF_XPORT:
- (*col_cnt)++;
+ (*col_cnt)++;
break;
default:
break;
step_list_ptr = step_list;
j = 0;
for (i = 0; i < im->gdes_c; i++) {
+ /* decide if we need to handle the output */
+ int handle=0;
switch (im->gdes[i].gf) {
+ case GF_LINE:
+ case GF_AREA:
+ case GF_STACK:
+ handle=dolines;
+ break;
case GF_XPORT:
+ handle=1;
+ break;
+ default:
+ handle=0;
+ break;
+ }
+ /* and now do the real work */
+ if (handle) {
ref_list[xport_counter++] = i;
*step_list_ptr = im->gdes[im->gdes[i].vidx].step;
/* printf("%s:%lu\n",im->gdes[i].legend,*step_list_ptr); */
strcpy(legend_list[j++], im->gdes[i].legend);
else
legend_list[j++][0] = '\0';
- break;
- default:
- break;
- }
+ }
}
*step_list_ptr=0;
/* find a common step */
return 0;
}
+
+/* helper function for buffer handling */
+typedef struct stringbuffer_t {
+ size_t allocated;
+ size_t len;
+ unsigned char* data;
+ FILE *file;
+} stringbuffer_t;
+int addToBuffer(stringbuffer_t *,char*,size_t);
+
+int rrd_graph_xport(image_desc_t *);
+int rrd_xport_format_xml(stringbuffer_t *,image_desc_t*,time_t, time_t, unsigned long, unsigned long, char**, rrd_value_t*);
+int rrd_xport_format_json(stringbuffer_t *,image_desc_t*,time_t, time_t, unsigned long, unsigned long, char**, rrd_value_t*);
+int rrd_xport_format_sv(char,stringbuffer_t *,image_desc_t*,time_t, time_t, unsigned long, unsigned long, char**, rrd_value_t*);
+
+int rrd_graph_xport(image_desc_t *im) {
+ /* prepare the data for processing */
+ unsigned long col_cnt=0;
+ time_t start=im->start;
+ time_t end=im->end;
+ unsigned long step=im->step;
+ char **legend_v=NULL;
+ rrd_value_t *data=NULL;
+ /* initialize buffer */
+ stringbuffer_t buffer={0,0,NULL,NULL};
+ /* if we write a file, then open it */
+ if (strlen(im->graphfile)) {
+ buffer.file=fopen(im->graphfile,"w");
+ }
+
+ /* do the data processing */
+ if (rrd_xport_fn(im,&start,&end,&step,&col_cnt,&legend_v,&data,1)) { return -1;}
+
+ /* fill in some data */
+ rrd_infoval_t info;
+ info.u_cnt = im->start;
+ grinfo_push(im, sprintf_alloc("graph_start"), RD_I_CNT, info);
+ info.u_cnt = im->end;
+ grinfo_push(im, sprintf_alloc("graph_end"), RD_I_CNT, info);
+ info.u_cnt = im->step;
+ grinfo_push(im, sprintf_alloc("graph_step"), RD_I_CNT, info);
+
+
+ /* format it for output */
+ int r=0;
+ switch(im->imgformat) {
+ case IF_XML:
+ r=rrd_xport_format_xml(&buffer,im, start, end, step, col_cnt, legend_v, data);
+ break;
+ case IF_JSON:
+ r=rrd_xport_format_json(&buffer,im, start, end, step, col_cnt, legend_v, data);
+ break;
+ case IF_CSV:
+ r=rrd_xport_format_sv(',',&buffer,im, start, end, step, col_cnt, legend_v, data);
+ break;
+ case IF_TSV:
+ r=rrd_xport_format_sv('\t',&buffer,im, start, end, step, col_cnt, legend_v, data);
+ break;
+ case IF_SSV:
+ r=rrd_xport_format_sv(';',&buffer,im, start, end, step, col_cnt, legend_v, data);
+ break;
+ default:
+ break;
+ }
+ /* handle errors */
+ if (r) {
+ if (buffer.data) {free(buffer.data);}
+ return r;
+ }
+
+ /* now do the cleanup */
+ if (buffer.file) {
+ fclose(buffer.file); buffer.file=NULL;
+ im->rendered_image_size=0;
+ im->rendered_image=NULL;
+ } else {
+ im->rendered_image_size=buffer.len;
+ im->rendered_image=buffer.data;
+ }
+
+ /* and print stuff */
+ return print_calc(im);
+}
+
+int addToBuffer(stringbuffer_t * sb,char* data,size_t len) {
+ /* if len <= 0 we assume a string and calculate the length ourself */
+ if (len<=0) { len=strlen(data); }
+ /* if we have got a file, then take the shortcut */
+ if (sb->file) {
+ sb->len+=len;
+ fwrite(data,len,1,sb->file);
+ return 0;
+ }
+ /* if buffer is 0, then initialize */
+ if (! sb->data) {
+ /* make buffer a multiple of 8192 */
+ sb->allocated+=8192;
+ sb->allocated-=(sb->allocated%8192);
+ /* and allocate it */
+ sb->data=malloc(sb->allocated);
+ if (! sb->data) {
+ rrd_set_error("malloc issue");
+ return 1;
+ }
+ /* and initialize the buffer */
+ sb->len=0;
+ sb->data[0]=0;
+ }
+ /* and figure out if we need to extend the buffer */
+ if (sb->len+len+1>=sb->allocated) {
+ /* add so many pages until we have a buffer big enough */
+ while(sb->len+len+1>=sb->allocated) {
+ sb->allocated+=8192;
+ }
+ /* try to resize it */
+ unsigned char* resized=(unsigned char*)realloc(sb->data,sb->allocated);
+ if (resized) {
+ sb->data=resized;
+ } else {
+ free(sb->data);
+ sb->data=NULL;
+ sb->allocated=0;
+ rrd_set_error("realloc issue");
+ return -1;
+ }
+ }
+ /* and finally add to the buffer */
+ memcpy(sb->data+sb->len,data,len);
+ sb->len+=len;
+ /* and 0 terminate it */
+ sb->data[sb->len]=0;
+ /* and return */
+ return 0;
+}
+
+int rrd_xport_format_sv(char sep, stringbuffer_t *buffer,image_desc_t *im,time_t start, time_t end, unsigned long step, unsigned long col_cnt, char **legend_v, rrd_value_t* data) {
+ /* define the time format */
+ char* timefmt=NULL;
+ /* unfortunatley we have to do it this way,
+ as when no --x-graph argument is given,
+ then the xlab_user is not in a clean state (e.g. zero-filled) */
+ if (im->xlab_user.minsec!=-1) { timefmt=im->xlab_user.stst; }
+
+ /* row count */
+ unsigned long row_cnt=(end-start)/step;
+
+ /* estimate buffer size (to avoid multiple allocations) */
+ buffer->allocated=
+ 1024 /* bytes of overhead /header/footer */
+ +(12+19*col_cnt) /* 12 bytes overhead/line plus 19 bytes per column*/
+ *(1+row_cnt) /* number of columns + 1 (for header) */
+ ;
+
+ /* now start writing the header*/
+ if (addToBuffer(buffer,"\"time\"",6)) { return 1; }
+ char buf[256];
+ for(unsigned long i=0;i<col_cnt;i++) {
+ /* strip leading spaces */
+ char *t=legend_v[i]; while (isspace(*t)) { t++;}
+ /* and print it */
+ snprintf(buf,255,"%c\"%s\"",sep,t);
+ if (addToBuffer(buffer,buf,0)) { return 1;}
+ }
+ if (addToBuffer(buffer,"\r\n",2)) { return 1; }
+ /* and now write the data */
+ rrd_value_t *ptr=data;
+ for(time_t ti=start+step;ti<end;ti+=step) {
+ /* write time */
+ if (timefmt) {
+ struct tm loc;
+ localtime_r(&ti,&loc);
+ strftime(buf,254,timefmt,&loc);
+ } else {
+ snprintf(buf,254,"%ul",ti);
+ }
+ if (addToBuffer(buffer,buf,0)) { return 1; }
+ /* write the columns */
+ for(unsigned long i=0;i<col_cnt;i++) {
+ /* get the value */
+ rrd_value_t v=*ptr;ptr++;
+ /* and print it */
+ if (isnan(v)) {
+ snprintf(buf,255,"%c\"NaN\"",sep);
+ } else {
+ snprintf(buf,255,"%c\"%0.10e\"",sep,v);
+ }
+ if (addToBuffer(buffer,buf,0)) { return 1;}
+ }
+ /* and add a newline */
+ if (addToBuffer(buffer,"\r\n",2)) { return 1; }
+ }
+
+ /* and return OK */
+ return 0;
+}
+
+int rrd_xport_format_xml(stringbuffer_t *buffer,image_desc_t *im,time_t start, time_t end, unsigned long step, unsigned long col_cnt, char **legend_v, rrd_value_t* data) {
+ addToBuffer(buffer,"xml not implemented",0);
+ return 0;
+}
+
+int rrd_xport_format_json(stringbuffer_t *buffer,image_desc_t *im,time_t start, time_t end, unsigned long step, unsigned long col_cnt, char **legend_v, rrd_value_t* data) {
+ addToBuffer(buffer,"JSON not implemented",0);
+ return 0;
+}
+
projects / rrdtool.git / commitdiff