ac2578da087d77dd5340a7e928962d586eefff4d
1 /**
2 * collectd - src/utils_cmd_getthreshold.c
3 * Copyright (C) 2008,2009 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"
29 #include "common.h"
30 #include "plugin.h"
32 #include "utils_avltree.h"
33 #include "utils_cmd_getthreshold.h"
34 #include "utils_parse_option.h" /* for `parse_string' */
35 #include "utils_threshold.h"
37 #define print_to_socket(fh, ...) \
38 if (fprintf(fh, __VA_ARGS__) < 0) { \
39 char errbuf[1024]; \
40 WARNING("handle_getthreshold: failed to write to socket #%i: %s", \
41 fileno(fh), sstrerror(errno, errbuf, sizeof(errbuf))); \
42 return -1; \
43 }
45 int handle_getthreshold(FILE *fh, char *buffer) {
46 char *command;
47 char *identifier;
48 char *identifier_copy;
50 char *host;
51 char *plugin;
52 char *plugin_instance;
53 char *type;
54 char *type_instance;
56 threshold_t threshold;
58 int status;
59 size_t i;
61 if ((fh == NULL) || (buffer == NULL))
62 return (-1);
64 DEBUG("utils_cmd_getthreshold: handle_getthreshold (fh = %p, buffer = %s);",
65 (void *)fh, buffer);
67 command = NULL;
68 status = parse_string(&buffer, &command);
69 if (status != 0) {
70 print_to_socket(fh, "-1 Cannot parse command.\n");
71 return (-1);
72 }
73 assert(command != NULL);
75 if (strcasecmp("GETTHRESHOLD", command) != 0) {
76 print_to_socket(fh, "-1 Unexpected command: `%s'.\n", command);
77 return (-1);
78 }
80 identifier = NULL;
81 status = parse_string(&buffer, &identifier);
82 if (status != 0) {
83 print_to_socket(fh, "-1 Cannot parse identifier.\n");
84 return (-1);
85 }
86 assert(identifier != NULL);
88 if (*buffer != 0) {
89 print_to_socket(fh, "-1 Garbage after end of command: %s\n", buffer);
90 return (-1);
91 }
93 /* parse_identifier() modifies its first argument,
94 * returning pointers into it */
95 identifier_copy = sstrdup(identifier);
97 status = parse_identifier(identifier_copy, &host, &plugin, &plugin_instance,
98 &type, &type_instance);
99 if (status != 0) {
100 DEBUG("handle_getthreshold: Cannot parse identifier `%s'.", identifier);
101 print_to_socket(fh, "-1 Cannot parse identifier `%s'.\n", identifier);
102 sfree(identifier_copy);
103 return (-1);
104 }
106 value_list_t vl = {.values = NULL};
107 sstrncpy(vl.host, host, sizeof(vl.host));
108 sstrncpy(vl.plugin, plugin, sizeof(vl.plugin));
109 if (plugin_instance != NULL)
110 sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
111 sstrncpy(vl.type, type, sizeof(vl.type));
112 if (type_instance != NULL)
113 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
114 sfree(identifier_copy);
116 status = ut_search_threshold(&vl, &threshold);
117 if (status == ENOENT) {
118 print_to_socket(fh, "-1 No threshold found for identifier %s\n",
119 identifier);
120 return (0);
121 } else if (status != 0) {
122 print_to_socket(fh, "-1 Error while looking up threshold: %i\n", status);
123 return (-1);
124 }
126 /* Lets count the number of lines we'll return. */
127 i = 0;
128 if (threshold.host[0] != 0)
129 i++;
130 if (threshold.plugin[0] != 0)
131 i++;
132 if (threshold.plugin_instance[0] != 0)
133 i++;
134 if (threshold.type[0] != 0)
135 i++;
136 if (threshold.type_instance[0] != 0)
137 i++;
138 if (threshold.data_source[0] != 0)
139 i++;
140 if (!isnan(threshold.warning_min))
141 i++;
142 if (!isnan(threshold.warning_max))
143 i++;
144 if (!isnan(threshold.failure_min))
145 i++;
146 if (!isnan(threshold.failure_max))
147 i++;
148 if (threshold.hysteresis > 0.0)
149 i++;
150 if (threshold.hits > 1)
151 i++;
153 /* Print the response */
154 print_to_socket(fh, "%zu Threshold found\n", i);
156 if (threshold.host[0] != 0)
157 print_to_socket(fh, "Host: %s\n", threshold.host) if (
158 threshold.plugin[0] !=
159 0) print_to_socket(fh, "Plugin: %s\n",
160 threshold.plugin) if (threshold.plugin_instance[0] !=
161 0)
162 print_to_socket(fh, "Plugin Instance: %s\n",
163 threshold.plugin_instance) if (threshold.type[0] != 0)
164 print_to_socket(fh, "Type: %s\n", threshold.type) if (
165 threshold.type_instance[0] !=
166 0) print_to_socket(fh, "Type Instance: %s\n",
167 threshold
168 .type_instance) if (threshold.data_source
169 [0] != 0)
170 print_to_socket(
171 fh, "Data Source: %s\n",
172 threshold.data_source) if (!isnan(threshold.warning_min))
173 print_to_socket(
174 fh, "Warning Min: %g\n",
175 threshold
176 .warning_min) if (!isnan(threshold.warning_max))
177 print_to_socket(
178 fh, "Warning Max: %g\n",
179 threshold
180 .warning_max) if (!isnan(threshold.failure_min))
181 print_to_socket(
182 fh, "Failure Min: %g\n",
183 threshold
184 .failure_min) if (!isnan(threshold
185 .failure_max))
186 print_to_socket(
187 fh, "Failure Max: %g\n",
188 threshold.failure_max) if (threshold
189 .hysteresis >
190 0.0)
191 print_to_socket(
192 fh, "Hysteresis: %g\n",
193 threshold.hysteresis) if (threshold
194 .hits > 1)
195 print_to_socket(fh, "Hits: %i\n",
196 threshold.hits)
198 return (0);
199 } /* int handle_getthreshold */
201 /* vim: set sw=2 sts=2 ts=8 et : */