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;
51 #define _name super.name
53 /* object type */
54 int type;
56 /* common meta information */
57 sdb_time_t last_update;
58 sdb_time_t interval; /* moving average */
59 char **backends;
60 size_t backends_num;
61 sdb_store_obj_t *parent;
62 };
63 #define STORE_OBJ(obj) ((sdb_store_obj_t *)(obj))
64 #define STORE_CONST_OBJ(obj) ((const sdb_store_obj_t *)(obj))
66 typedef struct {
67 sdb_store_obj_t super;
69 sdb_data_t value;
70 } attr_t;
71 #define ATTR(obj) ((attr_t *)(obj))
72 #define CONST_ATTR(obj) ((const attr_t *)(obj))
74 typedef struct {
75 sdb_store_obj_t super;
77 sdb_avltree_t *attributes;
78 } service_t;
79 #define SVC(obj) ((service_t *)(obj))
80 #define CONST_SVC(obj) ((const service_t *)(obj))
82 typedef struct {
83 sdb_store_obj_t super;
85 sdb_avltree_t *attributes;
86 struct {
87 char *type;
88 char *id;
89 } store;
90 } sdb_metric_t;
91 #define METRIC(obj) ((sdb_metric_t *)(obj))
93 typedef struct {
94 sdb_store_obj_t super;
96 sdb_avltree_t *services;
97 sdb_avltree_t *metrics;
98 sdb_avltree_t *attributes;
99 } host_t;
100 #define HOST(obj) ((host_t *)(obj))
101 #define CONST_HOST(obj) ((const host_t *)(obj))
103 /* shortcuts for accessing service/host attributes */
104 #define _last_update super.last_update
105 #define _interval super.interval
107 /*
108 * querying
109 */
111 struct sdb_store_query {
112 sdb_object_t super;
113 sdb_ast_node_t *ast;
114 sdb_store_matcher_t *matcher;
115 sdb_store_matcher_t *filter;
116 };
117 #define QUERY(m) ((sdb_store_query_t *)(m))
119 /*
120 * expressions
121 */
123 enum {
124 TYPED_EXPR = -3, /* obj type stored in data.data.integer */
125 ATTR_VALUE = -2, /* attr name stored in data.data.string */
126 FIELD_VALUE = -1, /* field type stored in data.data.integer */
127 /* 0: const value (stored in data) */
128 /* >0: operator id */
129 };
131 struct sdb_store_expr {
132 sdb_object_t super;
134 int type; /* see above */
135 int data_type;
137 sdb_store_expr_t *left;
138 sdb_store_expr_t *right;
140 sdb_data_t data;
141 };
142 #define CONST_EXPR(v) { SDB_OBJECT_INIT, 0, (v).type, NULL, NULL, (v) }
143 #define EXPR_TO_STRING(e) \
144 (((e)->type == TYPED_EXPR) ? "<typed>" \
145 : ((e)->type == ATTR_VALUE) ? "attribute" \
146 : ((e)->type == FIELD_VALUE) ? SDB_FIELD_TO_NAME((e)->data.data.integer) \
147 : ((e)->type == 0) ? "<constant>" \
148 : ((e)->type > 0) ? SDB_DATA_OP_TO_STRING((e)->type) \
149 : "<unknown>")
151 /*
152 * matchers
153 */
155 /* when adding to this, also update 'MATCHER_SYM' below and 'matchers' in
156 * store_lookup.c */
157 enum {
158 MATCHER_OR,
159 MATCHER_AND,
160 MATCHER_NOT,
161 MATCHER_ANY,
162 MATCHER_ALL,
163 MATCHER_IN,
165 /* unary operators */
166 MATCHER_ISNULL,
167 MATCHER_ISTRUE,
168 MATCHER_ISFALSE,
170 /* ary operators */
171 MATCHER_LT,
172 MATCHER_LE,
173 MATCHER_EQ,
174 MATCHER_NE,
175 MATCHER_GE,
176 MATCHER_GT,
177 MATCHER_REGEX,
178 MATCHER_NREGEX,
180 /* a generic query */
181 MATCHER_QUERY,
182 };
184 #define MATCHER_SYM(t) \
185 (((t) == MATCHER_OR) ? "OR" \
186 : ((t) == MATCHER_AND) ? "AND" \
187 : ((t) == MATCHER_NOT) ? "NOT" \
188 : ((t) == MATCHER_ANY) ? "ANY" \
189 : ((t) == MATCHER_ALL) ? "ALL" \
190 : ((t) == MATCHER_IN) ? "IN" \
191 : ((t) == MATCHER_ISNULL) ? "IS NULL" \
192 : ((t) == MATCHER_ISTRUE) ? "IS TRUE" \
193 : ((t) == MATCHER_ISFALSE) ? "IS FALSE" \
194 : ((t) == MATCHER_LT) ? "<" \
195 : ((t) == MATCHER_LE) ? "<=" \
196 : ((t) == MATCHER_EQ) ? "=" \
197 : ((t) == MATCHER_NE) ? "!=" \
198 : ((t) == MATCHER_GE) ? ">=" \
199 : ((t) == MATCHER_GT) ? ">" \
200 : ((t) == MATCHER_REGEX) ? "=~" \
201 : ((t) == MATCHER_NREGEX) ? "!~" \
202 : ((t) == MATCHER_QUERY) ? "QUERY" \
203 : "UNKNOWN")
205 /* matcher base type */
206 struct sdb_store_matcher {
207 sdb_object_t super;
208 /* type of the matcher */
209 int type;
210 };
211 #define M(m) ((sdb_store_matcher_t *)(m))
213 /* infix operator matcher */
214 typedef struct {
215 sdb_store_matcher_t super;
217 /* left and right hand operands */
218 sdb_store_matcher_t *left;
219 sdb_store_matcher_t *right;
220 } op_matcher_t;
221 #define OP_M(m) ((op_matcher_t *)(m))
223 /* unary operator matcher */
224 typedef struct {
225 sdb_store_matcher_t super;
227 /* operand */
228 sdb_store_matcher_t *op;
229 } uop_matcher_t;
230 #define UOP_M(m) ((uop_matcher_t *)(m))
232 /* iter matcher */
233 typedef struct {
234 sdb_store_matcher_t super;
235 sdb_store_expr_t *iter;
236 sdb_store_matcher_t *m;
237 } iter_matcher_t;
238 #define ITER_M(m) ((iter_matcher_t *)(m))
240 /* compare operator matcher */
241 typedef struct {
242 sdb_store_matcher_t super;
244 /* left and right hand expressions */
245 sdb_store_expr_t *left;
246 sdb_store_expr_t *right;
247 } cmp_matcher_t;
248 #define CMP_M(m) ((cmp_matcher_t *)(m))
250 typedef struct {
251 sdb_store_matcher_t super;
252 sdb_store_expr_t *expr;
253 } unary_matcher_t;
254 #define UNARY_M(m) ((unary_matcher_t *)(m))
256 #ifdef __cplusplus
257 } /* extern "C" */
258 #endif
260 #endif /* ! SDB_CORE_STORE_H */
262 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */