1 /*****************************************************************************
2 * RRDtool 1.3.2 Copyright by Tobi Oetiker, 1997-2008
3 * Copyright by Florian Forster, 2008
4 *****************************************************************************
5 * rrd_lastupdate Get the last datum entered for each DS
6 *****************************************************************************/
8 #include "rrd_tool.h"
9 #include "rrd_rpncalc.h"
10 #include "rrd_client.h"
11 #include <stdarg.h>
13 int rrd_lastupdate (int argc, char **argv)
14 {
15 time_t last_update;
16 char **ds_names;
17 char **last_ds;
18 unsigned long ds_count, i;
19 int status;
21 char *opt_daemon = NULL;
23 optind = 0;
24 opterr = 0; /* initialize getopt */
26 while (42) {
27 int opt;
28 int option_index = 0;
29 static struct option long_options[] = {
30 {"daemon", required_argument, 0, 'd'},
31 {0, 0, 0, 0}
32 };
34 opt = getopt_long (argc, argv, "d:", long_options, &option_index);
36 if (opt == EOF)
37 break;
39 switch (opt) {
40 case 'd':
41 if (opt_daemon != NULL)
42 free (opt_daemon);
43 opt_daemon = strdup (optarg);
44 if (opt_daemon == NULL)
45 {
46 rrd_set_error ("strdup failed.");
47 return (-1);
48 }
49 break;
51 default:
52 rrd_set_error ("Usage: rrdtool %s [--daemon <addr>] <file>",
53 argv[0]);
54 return (-1);
55 break;
56 }
57 } /* while (42) */
59 if ((argc - optind) != 1) {
60 rrd_set_error ("Usage: rrdtool %s [--daemon <addr>] <file>",
61 argv[0]);
62 return (-1);
63 }
65 status = rrdc_flush_if_daemon(opt_daemon, argv[optind]);
66 if (opt_daemon) free (opt_daemon);
67 if (status) return (-1);
69 status = rrd_lastupdate_r (argv[optind],
70 &last_update, &ds_count, &ds_names, &last_ds);
71 if (status != 0)
72 return (status);
74 for (i = 0; i < ds_count; i++)
75 printf(" %s", ds_names[i]);
76 printf ("\n\n");
78 printf ("%10lu:", last_update);
79 for (i = 0; i < ds_count; i++) {
80 printf(" %s", last_ds[i]);
81 free(last_ds[i]);
82 free(ds_names[i]);
83 }
84 printf("\n");
86 free(last_ds);
87 free(ds_names);
89 return (0);
90 } /* int rrd_lastupdate */
92 int rrd_lastupdate_r(const char *filename,
93 time_t *ret_last_update,
94 unsigned long *ret_ds_count,
95 char ***ret_ds_names,
96 char ***ret_last_ds)
97 {
98 unsigned long i = 0;
99 rrd_t rrd;
100 rrd_file_t *rrd_file;
102 rrd_init(&rrd);
103 rrd_file = rrd_open(filename, &rrd, RRD_READONLY);
104 if (rrd_file == NULL) {
105 rrd_free(&rrd);
106 return (-1);
107 }
109 *ret_last_update = rrd.live_head->last_up;
110 *ret_ds_count = rrd.stat_head->ds_cnt;
111 *ret_ds_names = (char **) malloc (rrd.stat_head->ds_cnt * sizeof(char *));
112 if (*ret_ds_names == NULL) {
113 rrd_set_error ("malloc fetch ret_ds_names array");
114 rrd_close (rrd_file);
115 rrd_free (&rrd);
116 return (-1);
117 }
118 memset (*ret_ds_names, 0, rrd.stat_head->ds_cnt * sizeof(char *));
120 *ret_last_ds = (char **) malloc (rrd.stat_head->ds_cnt * sizeof(char *));
121 if (*ret_last_ds == NULL) {
122 rrd_set_error ("malloc fetch ret_last_ds array");
123 free (*ret_ds_names);
124 *ret_ds_names = NULL;
125 rrd_close (rrd_file);
126 rrd_free (&rrd);
127 return (-1);
128 }
129 memset (*ret_last_ds, 0, rrd.stat_head->ds_cnt * sizeof(char *));
131 for (i = 0; i < rrd.stat_head->ds_cnt; i++) {
132 (*ret_ds_names)[i] = sprintf_alloc("%s", rrd.ds_def[i].ds_nam);
133 (*ret_last_ds)[i] = sprintf_alloc("%s", rrd.pdp_prep[i].last_ds);
135 if (((*ret_ds_names)[i] == NULL) || ((*ret_last_ds)[i] == NULL))
136 break;
137 }
139 /* Check if all names and values could be copied and free everything if
140 * not. */
141 if (i < rrd.stat_head->ds_cnt) {
142 rrd_set_error ("sprintf_alloc failed");
143 for (i = 0; i < rrd.stat_head->ds_cnt; i++) {
144 if ((*ret_ds_names)[i] != NULL)
145 {
146 free ((*ret_ds_names)[i]);
147 (*ret_ds_names)[i] = NULL;
148 }
149 if ((*ret_last_ds)[i] != NULL)
150 {
151 free ((*ret_last_ds)[i]);
152 (*ret_last_ds)[i] = NULL;
153 }
154 }
155 free (*ret_ds_names);
156 *ret_ds_names = NULL;
157 free (*ret_last_ds);
158 *ret_last_ds = NULL;
159 rrd_close (rrd_file);
160 rrd_free (&rrd);
161 return (-1);
162 }
164 rrd_free(&rrd);
165 rrd_close(rrd_file);
166 return (0);
167 } /* int rrd_lastupdate_r */