042091a997044a712c4de1d4c45fe734b1406348
1 /*
2 * SysDB - src/frontend/connection-private.h
3 * Copyright (C) 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 frontend modules
30 */
32 #ifndef SDB_FRONTEND_CONNECTION_PRIVATE_H
33 #define SDB_FRONTEND_CONNECTION_PRIVATE_H 1
35 #include "frontend/connection.h"
37 #include "core/object.h"
38 #include "core/store.h"
39 #include "core/timeseries.h"
40 #include "utils/strbuf.h"
42 #include <inttypes.h>
43 #include <arpa/inet.h>
45 #include <stdlib.h>
47 #ifdef __cplusplus
48 extern "C" {
49 #endif
51 struct sdb_conn {
52 sdb_object_t super;
54 /* file-descriptor of the open connection */
55 int fd;
57 /* connection and client information */
58 struct sockaddr_storage client_addr;
59 socklen_t client_addr_len;
61 /* read buffer */
62 sdb_strbuf_t *buf;
64 /* connection / protocol state information */
65 uint32_t cmd;
66 uint32_t cmd_len;
68 /* amount of data to skip, e.g., after receiving invalid commands; if this
69 * is non-zero, the 'skip_len' first bytes of 'buf' are invalid */
70 size_t skip_len;
72 sdb_strbuf_t *errbuf;
74 /* user information */
75 char *username; /* NULL if the user has not been authenticated */
76 _Bool ready; /* indicates that startup finished successfully */
77 };
78 #define CONN(obj) ((sdb_conn_t *)(obj))
80 /*
81 * node types
82 */
84 typedef struct {
85 sdb_conn_node_t super;
86 sdb_store_expr_t *expr;
87 } conn_expr_t;
88 #define CONN_EXPR(obj) ((conn_expr_t *)(obj))
90 typedef struct {
91 sdb_conn_node_t super;
92 sdb_store_matcher_t *matcher;
93 } conn_matcher_t;
94 #define CONN_MATCHER(obj) ((conn_matcher_t *)(obj))
96 typedef struct {
97 sdb_conn_node_t super;
98 int type;
99 conn_matcher_t *filter;
100 } conn_list_t;
101 #define CONN_LIST(obj) ((conn_list_t *)(obj))
103 typedef struct {
104 sdb_conn_node_t super;
105 int type;
106 char *host;
107 char *name; /* NULL for type == SDB_HOST */
108 conn_matcher_t *filter;
109 } conn_fetch_t;
110 #define CONN_FETCH(obj) ((conn_fetch_t *)(obj))
112 typedef struct {
113 sdb_conn_node_t super;
114 int type;
115 conn_matcher_t *matcher;
116 conn_matcher_t *filter;
117 } conn_lookup_t;
118 #define CONN_LOOKUP(obj) ((conn_lookup_t *)(obj))
120 typedef struct {
121 sdb_conn_node_t super;
122 char *hostname;
123 char *metric;
124 sdb_timeseries_opts_t opts;
125 } conn_ts_t;
126 #define CONN_TS(obj) ((conn_ts_t *)(obj))
128 /*
129 * type helper functions
130 */
132 static void __attribute__((unused))
133 conn_expr_destroy(sdb_object_t *obj)
134 {
135 sdb_object_deref(SDB_OBJ(CONN_EXPR(obj)->expr));
136 } /* conn_expr_destroy */
138 static void __attribute__((unused))
139 conn_matcher_destroy(sdb_object_t *obj)
140 {
141 sdb_object_deref(SDB_OBJ(CONN_MATCHER(obj)->matcher));
142 } /* conn_matcher_destroy */
144 static void __attribute__((unused))
145 conn_list_destroy(sdb_object_t *obj)
146 {
147 sdb_object_deref(SDB_OBJ(CONN_LIST(obj)->filter));
148 } /* conn_list_destroy */
150 static void __attribute__((unused))
151 conn_fetch_destroy(sdb_object_t *obj)
152 {
153 if (CONN_FETCH(obj)->host)
154 free(CONN_FETCH(obj)->host);
155 if (CONN_FETCH(obj)->name)
156 free(CONN_FETCH(obj)->name);
157 sdb_object_deref(SDB_OBJ(CONN_FETCH(obj)->filter));
158 } /* conn_fetch_destroy */
160 static void __attribute__((unused))
161 conn_lookup_destroy(sdb_object_t *obj)
162 {
163 sdb_object_deref(SDB_OBJ(CONN_LOOKUP(obj)->matcher));
164 sdb_object_deref(SDB_OBJ(CONN_LOOKUP(obj)->filter));
165 } /* conn_lookup_destroy */
167 static void __attribute__((unused))
168 conn_ts_destroy(sdb_object_t *obj)
169 {
170 if (CONN_TS(obj)->hostname)
171 free(CONN_TS(obj)->hostname);
172 if (CONN_TS(obj)->metric)
173 free(CONN_TS(obj)->metric);
174 } /* conn_ts_destroy */
176 #ifdef __cplusplus
177 } /* extern "C" */
178 #endif
180 #endif /* ! SDB_FRONTEND_CONNECTION_H */
182 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */