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 *services;
85 sdb_avltree_t *attributes;
86 } sdb_host_t;
87 #define HOST(obj) ((sdb_host_t *)(obj))
88 #define CONST_HOST(obj) ((const sdb_host_t *)(obj))
90 /* shortcuts for accessing service/host attributes */
91 #define _last_update super.last_update
92 #define _interval super.interval
94 /*
95 * conditionals
96 */
98 /* compares an object using the specified conditional and taking the specified
99 * filter into account */
100 typedef int (*cmp_cb)(sdb_store_obj_t *, sdb_store_cond_t *,
101 sdb_store_matcher_t *);
103 struct sdb_store_cond {
104 sdb_object_t super;
105 cmp_cb cmp;
106 };
108 typedef struct {
109 sdb_store_cond_t super;
110 char *name;
111 sdb_store_expr_t *expr;
112 } attr_cond_t;
113 #define ATTR_C(obj) ((attr_cond_t *)(obj))
115 typedef struct {
116 sdb_store_cond_t super;
117 int field;
118 sdb_store_expr_t *expr;
119 } obj_cond_t;
120 #define OBJ_C(obj) ((obj_cond_t *)(obj))
122 /*
123 * matchers
124 */
126 /* when adding to this, also update 'matchers' and 'matchers_tostring'
127 * in store_lookup.c */
128 enum {
129 MATCHER_OR,
130 MATCHER_AND,
131 MATCHER_NOT,
132 MATCHER_NAME,
133 MATCHER_ATTR,
134 MATCHER_LT,
135 MATCHER_LE,
136 MATCHER_EQ,
137 MATCHER_GE,
138 MATCHER_GT,
139 MATCHER_ISNULL,
140 };
142 #define MATCHER_SYM(t) \
143 (((t) == MATCHER_OR) ? "OR" \
144 : ((t) == MATCHER_AND) ? "AND" \
145 : ((t) == MATCHER_NOT) ? "NOT" \
146 : ((t) == MATCHER_NAME) ? "NAME" \
147 : ((t) == MATCHER_ATTR) ? "ATTR" \
148 : ((t) == MATCHER_LT) ? "<" \
149 : ((t) == MATCHER_LE) ? "<=" \
150 : ((t) == MATCHER_EQ) ? "=" \
151 : ((t) == MATCHER_GE) ? ">=" \
152 : ((t) == MATCHER_GT) ? ">" \
153 : ((t) == MATCHER_ISNULL) ? "IS NULL" \
154 : "UNKNOWN")
156 /* match the name of something */
157 typedef struct {
158 char *name;
159 regex_t *name_re;
160 } string_matcher_t;
162 /* matcher base type */
163 struct sdb_store_matcher {
164 sdb_object_t super;
165 /* type of the matcher */
166 int type;
167 };
168 #define M(m) ((sdb_store_matcher_t *)(m))
170 /* infix operator matcher */
171 typedef struct {
172 sdb_store_matcher_t super;
174 /* left and right hand operands */
175 sdb_store_matcher_t *left;
176 sdb_store_matcher_t *right;
177 } op_matcher_t;
178 #define OP_M(m) ((op_matcher_t *)(m))
180 /* unary operator matcher */
181 typedef struct {
182 sdb_store_matcher_t super;
184 /* operand */
185 sdb_store_matcher_t *op;
186 } uop_matcher_t;
187 #define UOP_M(m) ((uop_matcher_t *)(m))
189 /* match any type of object by it's name */
190 typedef struct {
191 sdb_store_matcher_t super;
193 int obj_type;
194 string_matcher_t name;
195 } name_matcher_t;
196 #define NAME_M(m) ((name_matcher_t *)(m))
198 /* match attributes */
199 typedef struct {
200 sdb_store_matcher_t super;
201 char *name;
202 string_matcher_t value;
203 } attr_matcher_t;
204 #define ATTR_M(m) ((attr_matcher_t *)(m))
206 typedef struct {
207 sdb_store_matcher_t super;
208 char *attr_name; /* we only support matching attributes */
209 } isnull_matcher_t;
210 #define ISNULL_M(m) ((isnull_matcher_t *)(m))
212 /* match using conditionals */
213 typedef struct {
214 sdb_store_matcher_t super;
215 sdb_store_cond_t *cond;
216 } cond_matcher_t;
217 #define COND_M(m) ((cond_matcher_t *)(m))
219 #ifdef __cplusplus
220 } /* extern "C" */
221 #endif
223 #endif /* ! SDB_CORE_STORE_H */
225 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */