e6086f27193226c631f9bb7e4a8358c0dde545e2
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_threshold.h"
34 #include "utils_parse_option.h" /* for `parse_string' */
35 #include "utils_cmd_getthreshold.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 {
47 char *command;
48 char *identifier;
49 char *identifier_copy;
51 char *host;
52 char *plugin;
53 char *plugin_instance;
54 char *type;
55 char *type_instance;
57 threshold_t threshold;
59 int status;
60 size_t i;
62 if ((fh == NULL) || (buffer == NULL))
63 return (-1);
65 DEBUG ("utils_cmd_getthreshold: handle_getthreshold (fh = %p, buffer = %s);",
66 (void *) fh, buffer);
68 command = NULL;
69 status = parse_string (&buffer, &command);
70 if (status != 0)
71 {
72 print_to_socket (fh, "-1 Cannot parse command.\n");
73 return (-1);
74 }
75 assert (command != NULL);
77 if (strcasecmp ("GETTHRESHOLD", command) != 0)
78 {
79 print_to_socket (fh, "-1 Unexpected command: `%s'.\n", command);
80 return (-1);
81 }
83 identifier = NULL;
84 status = parse_string (&buffer, &identifier);
85 if (status != 0)
86 {
87 print_to_socket (fh, "-1 Cannot parse identifier.\n");
88 return (-1);
89 }
90 assert (identifier != NULL);
92 if (*buffer != 0)
93 {
94 print_to_socket (fh, "-1 Garbage after end of command: %s\n", buffer);
95 return (-1);
96 }
98 /* parse_identifier() modifies its first argument,
99 * returning pointers into it */
100 identifier_copy = sstrdup (identifier);
102 status = parse_identifier (identifier_copy, &host,
103 &plugin, &plugin_instance,
104 &type, &type_instance,
105 /* default_host = */ NULL);
106 if (status != 0)
107 {
108 DEBUG ("handle_getthreshold: Cannot parse identifier `%s'.", identifier);
109 print_to_socket (fh, "-1 Cannot parse identifier `%s'.\n", identifier);
110 sfree (identifier_copy);
111 return (-1);
112 }
114 value_list_t vl = {
115 .values = NULL
116 };
117 sstrncpy (vl.host, host, sizeof (vl.host));
118 sstrncpy (vl.plugin, plugin, sizeof (vl.plugin));
119 if (plugin_instance != NULL)
120 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
121 sstrncpy (vl.type, type, sizeof (vl.type));
122 if (type_instance != NULL)
123 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
124 sfree (identifier_copy);
126 status = ut_search_threshold (&vl, &threshold);
127 if (status == ENOENT)
128 {
129 print_to_socket (fh, "-1 No threshold found for identifier %s\n",
130 identifier);
131 return (0);
132 }
133 else if (status != 0)
134 {
135 print_to_socket (fh, "-1 Error while looking up threshold: %i\n",
136 status);
137 return (-1);
138 }
140 /* Lets count the number of lines we'll return. */
141 i = 0;
142 if (threshold.host[0] != 0) i++;
143 if (threshold.plugin[0] != 0) i++;
144 if (threshold.plugin_instance[0] != 0) i++;
145 if (threshold.type[0] != 0) i++;
146 if (threshold.type_instance[0] != 0) i++;
147 if (threshold.data_source[0] != 0) i++;
148 if (!isnan (threshold.warning_min)) i++;
149 if (!isnan (threshold.warning_max)) i++;
150 if (!isnan (threshold.failure_min)) i++;
151 if (!isnan (threshold.failure_max)) i++;
152 if (threshold.hysteresis > 0.0) i++;
153 if (threshold.hits > 1) i++;
155 /* Print the response */
156 print_to_socket (fh, "%zu Threshold found\n", i);
158 if (threshold.host[0] != 0)
159 print_to_socket (fh, "Host: %s\n", threshold.host)
160 if (threshold.plugin[0] != 0)
161 print_to_socket (fh, "Plugin: %s\n", threshold.plugin)
162 if (threshold.plugin_instance[0] != 0)
163 print_to_socket (fh, "Plugin Instance: %s\n", threshold.plugin_instance)
164 if (threshold.type[0] != 0)
165 print_to_socket (fh, "Type: %s\n", threshold.type)
166 if (threshold.type_instance[0] != 0)
167 print_to_socket (fh, "Type Instance: %s\n", threshold.type_instance)
168 if (threshold.data_source[0] != 0)
169 print_to_socket (fh, "Data Source: %s\n", threshold.data_source)
170 if (!isnan (threshold.warning_min))
171 print_to_socket (fh, "Warning Min: %g\n", threshold.warning_min)
172 if (!isnan (threshold.warning_max))
173 print_to_socket (fh, "Warning Max: %g\n", threshold.warning_max)
174 if (!isnan (threshold.failure_min))
175 print_to_socket (fh, "Failure Min: %g\n", threshold.failure_min)
176 if (!isnan (threshold.failure_max))
177 print_to_socket (fh, "Failure Max: %g\n", threshold.failure_max)
178 if (threshold.hysteresis > 0.0)
179 print_to_socket (fh, "Hysteresis: %g\n", threshold.hysteresis)
180 if (threshold.hits > 1)
181 print_to_socket (fh, "Hits: %i\n", threshold.hits)
183 return (0);
184 } /* int handle_getthreshold */
186 /* vim: set sw=2 sts=2 ts=8 et : */