d4bc47e2ba7423b045d43af5ad85d31b04990cdb
1 /****************************************************************************
2 * RRDtool 1.3.3 Copyright by Tobi Oetiker, 1997-2008
3 ****************************************************************************
4 * rrd_xport.c export RRD data
5 ****************************************************************************/
7 #include <sys/stat.h>
9 #include "rrd_tool.h"
10 #include "rrd_graph.h"
11 #include "rrd_xport.h"
12 #include "unused.h"
14 #if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
15 #include <io.h>
16 #include <fcntl.h>
17 #endif
20 int rrd_xport(
21 int,
22 char **,
23 int *,
24 time_t *,
25 time_t *,
26 unsigned long *,
27 unsigned long *,
28 char ***,
29 rrd_value_t **);
31 int rrd_xport_fn(
32 image_desc_t *,
33 time_t *,
34 time_t *,
35 unsigned long *,
36 unsigned long *,
37 char ***,
38 rrd_value_t **);
43 int rrd_xport(
44 int argc,
45 char **argv,
46 int UNUSED(*xsize),
47 time_t *start,
48 time_t *end, /* which time frame do you want ?
49 * will be changed to represent reality */
50 unsigned long *step, /* which stepsize do you want?
51 * will be changed to represent reality */
52 unsigned long *col_cnt, /* number of data columns in the result */
53 char ***legend_v, /* legend entries */
54 rrd_value_t **data)
55 { /* two dimensional array containing the data */
57 image_desc_t im;
58 time_t start_tmp = 0, end_tmp = 0;
59 struct rrd_time_value start_tv;
60 struct rrd_time_value end_tv;
61 char *parsetime_error = NULL;
62 struct option long_options[] = {
63 {"start", required_argument, 0, 's'},
64 {"end", required_argument, 0, 'e'},
65 {"maxrows", required_argument, 0, 'm'},
66 {"step", required_argument, 0, 261},
67 {"enumds", no_argument, 0, 262}, /* these are handled in the frontend ... */
68 {0, 0, 0, 0}
69 };
71 optind = 0;
72 opterr = 0; /* initialize getopt */
74 rrd_graph_init(&im);
76 parsetime("end-24h", &start_tv);
77 parsetime("now", &end_tv);
79 while (1) {
80 int option_index = 0;
81 int opt;
83 opt = getopt_long(argc, argv, "s:e:m:", long_options, &option_index);
85 if (opt == EOF)
86 break;
88 switch (opt) {
89 case 261:
90 im.step = atoi(optarg);
91 break;
92 case 262:
93 break;
94 case 's':
95 if ((parsetime_error = parsetime(optarg, &start_tv))) {
96 rrd_set_error("start time: %s", parsetime_error);
97 return -1;
98 }
99 break;
100 case 'e':
101 if ((parsetime_error = parsetime(optarg, &end_tv))) {
102 rrd_set_error("end time: %s", parsetime_error);
103 return -1;
104 }
105 break;
106 case 'm':
107 im.xsize = atol(optarg);
108 if (im.xsize < 10) {
109 rrd_set_error("maxrows below 10 rows");
110 return -1;
111 }
112 break;
113 case '?':
114 rrd_set_error("unknown option '%s'", argv[optind - 1]);
115 return -1;
116 }
117 }
119 if (proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
120 return -1;
121 }
123 if (start_tmp < 3600 * 24 * 365 * 10) {
124 rrd_set_error("the first entry to fetch should be after 1980 (%ld)",
125 start_tmp);
126 return -1;
127 }
129 if (end_tmp < start_tmp) {
130 rrd_set_error("start (%ld) should be less than end (%ld)",
131 start_tmp, end_tmp);
132 return -1;
133 }
135 im.start = start_tmp;
136 im.end = end_tmp;
137 im.step = max((long) im.step, (im.end - im.start) / im.xsize);
139 rrd_graph_script(argc, argv, &im, 0);
140 if (rrd_test_error()) {
141 im_free(&im);
142 return -1;
143 }
145 if (im.gdes_c == 0) {
146 rrd_set_error("can't make an xport without contents");
147 im_free(&im);
148 return (-1);
149 }
151 if (rrd_xport_fn(&im, start, end, step, col_cnt, legend_v, data) == -1) {
152 im_free(&im);
153 return -1;
154 }
156 im_free(&im);
157 return 0;
158 }
162 int rrd_xport_fn(
163 image_desc_t *im,
164 time_t *start,
165 time_t *end, /* which time frame do you want ?
166 * will be changed to represent reality */
167 unsigned long *step, /* which stepsize do you want?
168 * will be changed to represent reality */
169 unsigned long *col_cnt, /* number of data columns in the result */
170 char ***legend_v, /* legend entries */
171 rrd_value_t **data)
172 { /* two dimensional array containing the data */
174 int i = 0, j = 0;
175 unsigned long dst_row, row_cnt;
176 rrd_value_t *dstptr;
178 unsigned long xport_counter = 0;
179 int *ref_list;
180 long *step_list;
181 long *step_list_ptr;
182 char **legend_list;
185 /* pull the data from the rrd files ... */
186 if (data_fetch(im) == -1)
187 return -1;
189 /* evaluate CDEF operations ... */
190 if (data_calc(im) == -1)
191 return -1;
193 /* how many xports? */
194 *col_cnt = 0;
195 for (i = 0; i < im->gdes_c; i++) {
196 switch (im->gdes[i].gf) {
197 case GF_XPORT:
198 (*col_cnt)++;
199 break;
200 default:
201 break;
202 }
203 }
204 if ((*col_cnt) == 0) {
205 rrd_set_error("no XPORT found, nothing to do");
206 return -1;
207 }
209 /* a list of referenced gdes */
210 ref_list = malloc(sizeof(int) * (*col_cnt));
211 if (ref_list == NULL)
212 return -1;
214 /* a list to save pointers to the column's legend entry */
215 /* this is a return value! */
216 legend_list = malloc(sizeof(char *) * (*col_cnt));
217 if (legend_list == NULL) {
218 free(ref_list);
219 return -1;
220 }
222 /* lets find the step size we have to use for xport */
223 step_list = malloc(sizeof(long)*((*col_cnt)+1));
224 step_list_ptr = step_list;
225 j = 0;
226 for (i = 0; i < im->gdes_c; i++) {
227 switch (im->gdes[i].gf) {
228 case GF_XPORT:
229 ref_list[xport_counter++] = i;
230 *step_list_ptr = im->gdes[im->gdes[i].vidx].step;
231 printf("%s:%lu\n",im->gdes[i].legend,*step_list_ptr);
232 *step_list_ptr++;
233 /* reserve room for one legend entry */
234 /* is FMT_LEG_LEN + 5 the correct size? */
235 if ((legend_list[j] =
236 malloc(sizeof(char) * (FMT_LEG_LEN + 5))) == NULL) {
237 free(ref_list);
238 *data = NULL;
239 while (--j > -1)
240 free(legend_list[j]);
241 free(legend_list);
242 rrd_set_error("malloc xport legend entry");
243 return (-1);
244 }
246 if (im->gdes[i].legend)
247 /* omit bounds check, should have the same size */
248 strcpy(legend_list[j++], im->gdes[i].legend);
249 else
250 legend_list[j++][0] = '\0';
251 break;
252 default:
253 break;
254 }
255 }
256 *step_list_ptr=0;
257 /* find a common step */
258 *step = lcd(step_list);
259 printf("step: %lu\n",*step);
260 free(step_list);
262 *start = im->start - im->start % (*step);
263 *end = im->end - im->end % (*step);
266 /* room for rearranged data */
267 /* this is a return value! */
268 row_cnt = ((*end) - (*start)) / (*step);
269 if (((*data) =
270 malloc((*col_cnt) * row_cnt * sizeof(rrd_value_t))) == NULL) {
271 free(ref_list);
272 free(legend_list);
273 rrd_set_error("malloc xport data area");
274 return (-1);
275 }
276 dstptr = (*data);
278 /* fill data structure */
279 for (dst_row = 0; (int) dst_row < (int) row_cnt; dst_row++) {
280 for (i = 0; i < (int) (*col_cnt); i++) {
281 long vidx = im->gdes[ref_list[i]].vidx;
282 time_t now = *start + dst_row * *step;
283 (*dstptr++) = im->gdes[vidx].data[(unsigned long)
284 floor((double)
285 (now - im->gdes[vidx].start)
286 /im->gdes[vidx].step)
287 * im->gdes[vidx].ds_cnt +
288 im->gdes[vidx].ds];
290 }
291 }
293 *legend_v = legend_list;
294 free(ref_list);
295 return 0;
297 }