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 /* default_host = */ NULL);
100 if (status != 0) {
101 DEBUG("handle_getthreshold: Cannot parse identifier `%s'.", identifier);
102 print_to_socket(fh, "-1 Cannot parse identifier `%s'.\n", identifier);
103 sfree(identifier_copy);
104 return (-1);
105 }
107 value_list_t vl = {.values = NULL};
108 sstrncpy(vl.host, host, sizeof(vl.host));
109 sstrncpy(vl.plugin, plugin, sizeof(vl.plugin));
110 if (plugin_instance != NULL)
111 sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
112 sstrncpy(vl.type, type, sizeof(vl.type));
113 if (type_instance != NULL)
114 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
115 sfree(identifier_copy);
117 status = ut_search_threshold(&vl, &threshold);
118 if (status == ENOENT) {
119 print_to_socket(fh, "-1 No threshold found for identifier %s\n",
120 identifier);
121 return (0);
122 } else if (status != 0) {
123 print_to_socket(fh, "-1 Error while looking up threshold: %i\n", status);
124 return (-1);
125 }
127 /* Lets count the number of lines we'll return. */
128 i = 0;
129 if (threshold.host[0] != 0)
130 i++;
131 if (threshold.plugin[0] != 0)
132 i++;
133 if (threshold.plugin_instance[0] != 0)
134 i++;
135 if (threshold.type[0] != 0)
136 i++;
137 if (threshold.type_instance[0] != 0)
138 i++;
139 if (threshold.data_source[0] != 0)
140 i++;
141 if (!isnan(threshold.warning_min))
142 i++;
143 if (!isnan(threshold.warning_max))
144 i++;
145 if (!isnan(threshold.failure_min))
146 i++;
147 if (!isnan(threshold.failure_max))
148 i++;
149 if (threshold.hysteresis > 0.0)
150 i++;
151 if (threshold.hits > 1)
152 i++;
154 /* Print the response */
155 print_to_socket(fh, "%zu Threshold found\n", i);
157 if (threshold.host[0] != 0)
158 print_to_socket(fh, "Host: %s\n", threshold.host);
159 if (threshold.plugin[0] != 0)
160 print_to_socket(fh, "Plugin: %s\n", threshold.plugin);
161 if (threshold.plugin_instance[0] != 0)
162 print_to_socket(fh, "Plugin Instance: %s\n", threshold.plugin_instance);
163 if (threshold.type[0] != 0)
164 print_to_socket(fh, "Type: %s\n", threshold.type);
165 if (threshold.type_instance[0] != 0)
166 print_to_socket(fh, "Type Instance: %s\n", threshold.type_instance);
167 if (threshold.data_source[0] != 0)
168 print_to_socket(fh, "Data Source: %s\n", threshold.data_source);
169 if (!isnan(threshold.warning_min))
170 print_to_socket(fh, "Warning Min: %g\n", threshold.warning_min);
171 if (!isnan(threshold.warning_max))
172 print_to_socket(fh, "Warning Max: %g\n", threshold.warning_max);
173 if (!isnan(threshold.failure_min))
174 print_to_socket(fh, "Failure Min: %g\n", threshold.failure_min);
175 if (!isnan(threshold.failure_max))
176 print_to_socket(fh, "Failure Max: %g\n", threshold.failure_max);
177 if (threshold.hysteresis > 0.0)
178 print_to_socket(fh, "Hysteresis: %g\n", threshold.hysteresis);
179 if (threshold.hits > 1)
180 print_to_socket(fh, "Hits: %i\n", threshold.hits);
182 return (0);
183 } /* int handle_getthreshold */
185 /* vim: set sw=2 sts=2 ts=8 et : */