1 /**
2 * collectd - src/utils_cmd_listval.c
3 * Copyright (C) 2008 Florian octo Forster
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Florian octo Forster <octo at collectd.org>
25 **/
27 #include "collectd.h"
28 #include "common.h"
29 #include "plugin.h"
31 #include "utils_cmd_listval.h"
32 #include "utils_cache.h"
33 #include "utils_parse_option.h"
35 #define free_everything_and_return(status) do { \
36 size_t j; \
37 for (j = 0; j < number; j++) { \
38 sfree(names[j]); \
39 names[j] = NULL; \
40 } \
41 sfree(names); \
42 sfree(times); \
43 return (status); \
44 } while (0)
46 #define print_to_socket(fh, ...) \
47 do { \
48 if (fprintf (fh, __VA_ARGS__) < 0) { \
49 char errbuf[1024]; \
50 WARNING ("handle_listval: failed to write to socket #%i: %s", \
51 fileno (fh), sstrerror (errno, errbuf, sizeof (errbuf))); \
52 free_everything_and_return (-1); \
53 } \
54 fflush(fh); \
55 } while (0)
57 int handle_listval (FILE *fh, char *buffer)
58 {
59 char *command;
60 char **names = NULL;
61 cdtime_t *times = NULL;
62 size_t number = 0;
63 size_t i;
64 int status;
66 DEBUG ("utils_cmd_listval: handle_listval (fh = %p, buffer = %s);",
67 (void *) fh, buffer);
69 command = NULL;
70 status = parse_string (&buffer, &command);
71 if (status != 0)
72 {
73 print_to_socket (fh, "-1 Cannot parse command.\n");
74 free_everything_and_return (-1);
75 }
76 assert (command != NULL);
78 if (strcasecmp ("LISTVAL", command) != 0)
79 {
80 print_to_socket (fh, "-1 Unexpected command: `%s'.\n", command);
81 free_everything_and_return (-1);
82 }
84 if (*buffer != 0)
85 {
86 print_to_socket (fh, "-1 Garbage after end of command: %s\n", buffer);
87 free_everything_and_return (-1);
88 }
90 status = uc_get_names (&names, ×, &number);
91 if (status != 0)
92 {
93 DEBUG ("command listval: uc_get_names failed with status %i", status);
94 print_to_socket (fh, "-1 uc_get_names failed.\n");
95 free_everything_and_return (-1);
96 }
98 print_to_socket (fh, "%i Value%s found\n",
99 (int) number, (number == 1) ? "" : "s");
100 for (i = 0; i < number; i++)
101 print_to_socket (fh, "%.3f %s\n", CDTIME_T_TO_DOUBLE (times[i]),
102 names[i]);
104 free_everything_and_return (0);
105 } /* int handle_listval */
107 /* vim: set sw=2 sts=2 ts=8 : */