1 /*
2 * SysDB - src/core/store-private.h
3 * Copyright (C) 2012-2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 /*
29 * private data structures used by the store module
30 */
32 #ifndef SDB_CORE_STORE_PRIVATE_H
33 #define SDB_CORE_STORE_PRIVATE_H 1
35 #include "core/store.h"
36 #include "utils/avltree.h"
38 #include <sys/types.h>
39 #include <regex.h>
41 #ifdef __cplusplus
42 extern "C" {
43 #endif
45 /*
46 * core types
47 */
49 struct sdb_store_obj {
50 sdb_object_t super;
52 /* object type */
53 int type;
55 /* common meta information */
56 sdb_time_t last_update;
57 sdb_time_t interval; /* moving average */
58 char **backends;
59 size_t backends_num;
60 sdb_store_obj_t *parent;
61 };
62 #define STORE_OBJ(obj) ((sdb_store_obj_t *)(obj))
63 #define STORE_CONST_OBJ(obj) ((const sdb_store_obj_t *)(obj))
65 typedef struct {
66 sdb_store_obj_t super;
68 sdb_data_t value;
69 } sdb_attribute_t;
70 #define ATTR(obj) ((sdb_attribute_t *)(obj))
71 #define CONST_ATTR(obj) ((const sdb_attribute_t *)(obj))
73 typedef struct {
74 sdb_store_obj_t super;
76 sdb_avltree_t *attributes;
77 } sdb_service_t;
78 #define SVC(obj) ((sdb_service_t *)(obj))
79 #define CONST_SVC(obj) ((const sdb_service_t *)(obj))
81 typedef struct {
82 sdb_store_obj_t super;
84 sdb_avltree_t *attributes;
85 struct {
86 char *type;
87 char *id;
88 } store;
89 } sdb_metric_t;
90 #define METRIC(obj) ((sdb_metric_t *)(obj))
92 typedef struct {
93 sdb_store_obj_t super;
95 sdb_avltree_t *services;
96 sdb_avltree_t *metrics;
97 sdb_avltree_t *attributes;
98 } sdb_host_t;
99 #define HOST(obj) ((sdb_host_t *)(obj))
100 #define CONST_HOST(obj) ((const sdb_host_t *)(obj))
102 /* shortcuts for accessing service/host attributes */
103 #define _last_update super.last_update
104 #define _interval super.interval
106 /*
107 * conditionals
108 */
110 /* compares an object using the specified conditional and taking the specified
111 * filter into account */
112 typedef int (*cmp_cb)(sdb_store_obj_t *, sdb_store_cond_t *,
113 sdb_store_matcher_t *);
115 struct sdb_store_cond {
116 sdb_object_t super;
117 cmp_cb cmp;
118 };
120 typedef struct {
121 sdb_store_cond_t super;
122 char *name;
123 sdb_store_expr_t *expr;
124 } attr_cond_t;
125 #define ATTR_C(obj) ((attr_cond_t *)(obj))
127 typedef struct {
128 sdb_store_cond_t super;
129 int field;
130 sdb_store_expr_t *expr;
131 } obj_cond_t;
132 #define OBJ_C(obj) ((obj_cond_t *)(obj))
134 /*
135 * matchers
136 */
138 /* when adding to this, also update 'matchers' and 'matchers_tostring'
139 * in store_lookup.c */
140 enum {
141 MATCHER_OR,
142 MATCHER_AND,
143 MATCHER_NOT,
144 MATCHER_NAME,
145 MATCHER_ATTR,
146 MATCHER_SERVICE,
147 MATCHER_METRIC,
148 MATCHER_ATTRIBUTE,
149 MATCHER_LT,
150 MATCHER_LE,
151 MATCHER_EQ,
152 MATCHER_GE,
153 MATCHER_GT,
154 MATCHER_CMP_LT,
155 MATCHER_CMP_LE,
156 MATCHER_CMP_EQ,
157 MATCHER_CMP_GE,
158 MATCHER_CMP_GT,
159 MATCHER_ISNULL,
160 };
162 #define MATCHER_SYM(t) \
163 (((t) == MATCHER_OR) ? "OR" \
164 : ((t) == MATCHER_AND) ? "AND" \
165 : ((t) == MATCHER_NOT) ? "NOT" \
166 : ((t) == MATCHER_NAME) ? "NAME" \
167 : ((t) == MATCHER_ATTR) ? "ATTR" \
168 : ((t) == MATCHER_SERVICE) ? "SERVICE" \
169 : ((t) == MATCHER_METRIC) ? "METRIC" \
170 : ((t) == MATCHER_ATTRIBUTE) ? "ATTRIBUTE" \
171 : ((t) == MATCHER_LT) ? "<" \
172 : ((t) == MATCHER_LE) ? "<=" \
173 : ((t) == MATCHER_EQ) ? "=" \
174 : ((t) == MATCHER_GE) ? ">=" \
175 : ((t) == MATCHER_GT) ? ">" \
176 : ((t) == MATCHER_ISNULL) ? "IS NULL" \
177 : "UNKNOWN")
179 /* match the name of something */
180 typedef struct {
181 char *name;
182 regex_t *name_re;
183 } string_matcher_t;
185 /* matcher base type */
186 struct sdb_store_matcher {
187 sdb_object_t super;
188 /* type of the matcher */
189 int type;
190 };
191 #define M(m) ((sdb_store_matcher_t *)(m))
193 /* infix operator matcher */
194 typedef struct {
195 sdb_store_matcher_t super;
197 /* left and right hand operands */
198 sdb_store_matcher_t *left;
199 sdb_store_matcher_t *right;
200 } op_matcher_t;
201 #define OP_M(m) ((op_matcher_t *)(m))
203 /* unary operator matcher */
204 typedef struct {
205 sdb_store_matcher_t super;
207 /* operand */
208 sdb_store_matcher_t *op;
209 } uop_matcher_t;
210 #define UOP_M(m) ((uop_matcher_t *)(m))
212 /* child matcher */
213 typedef struct {
214 sdb_store_matcher_t super;
215 sdb_store_matcher_t *m;
216 } child_matcher_t;
217 #define CHILD_M(m) ((child_matcher_t *)(m))
219 /* compare operator matcher */
220 typedef struct {
221 sdb_store_matcher_t super;
223 /* left and right hand expressions */
224 sdb_store_expr_t *left;
225 sdb_store_expr_t *right;
226 } cmp_matcher_t;
227 #define CMP_M(m) ((cmp_matcher_t *)(m))
229 /* match any type of object by it's name */
230 typedef struct {
231 sdb_store_matcher_t super;
233 int obj_type;
234 string_matcher_t name;
235 } name_matcher_t;
236 #define NAME_M(m) ((name_matcher_t *)(m))
238 /* match attributes */
239 typedef struct {
240 sdb_store_matcher_t super;
241 char *name;
242 string_matcher_t value;
243 } attr_matcher_t;
244 #define ATTR_M(m) ((attr_matcher_t *)(m))
246 typedef struct {
247 sdb_store_matcher_t super;
248 char *attr_name; /* we only support matching attributes */
249 } isnull_matcher_t;
250 #define ISNULL_M(m) ((isnull_matcher_t *)(m))
252 /* match using conditionals */
253 typedef struct {
254 sdb_store_matcher_t super;
255 sdb_store_cond_t *cond;
256 } cond_matcher_t;
257 #define COND_M(m) ((cond_matcher_t *)(m))
259 #ifdef __cplusplus
260 } /* extern "C" */
261 #endif
263 #endif /* ! SDB_CORE_STORE_H */
265 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */