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_matcher_t *matcher;
87 } conn_matcher_t;
88 #define CONN_MATCHER(obj) ((conn_matcher_t *)(obj))
90 typedef struct {
91 sdb_conn_node_t super;
92 int type;
93 conn_matcher_t *filter;
94 } conn_list_t;
95 #define CONN_LIST(obj) ((conn_list_t *)(obj))
97 typedef struct {
98 sdb_conn_node_t super;
99 int type;
100 char *name;
101 conn_matcher_t *filter;
102 } conn_fetch_t;
103 #define CONN_FETCH(obj) ((conn_fetch_t *)(obj))
105 typedef struct {
106 sdb_conn_node_t super;
107 int type;
108 conn_matcher_t *matcher;
109 conn_matcher_t *filter;
110 } conn_lookup_t;
111 #define CONN_LOOKUP(obj) ((conn_lookup_t *)(obj))
113 typedef struct {
114 sdb_conn_node_t super;
115 char *hostname;
116 char *metric;
117 sdb_timeseries_opts_t opts;
118 } conn_ts_t;
119 #define CONN_TS(obj) ((conn_ts_t *)(obj))
121 /*
122 * type helper functions
123 */
125 static void __attribute__((unused))
126 conn_matcher_destroy(sdb_object_t *obj)
127 {
128 sdb_object_deref(SDB_OBJ(CONN_MATCHER(obj)->matcher));
129 } /* conn_matcher_destroy */
131 static void __attribute__((unused))
132 conn_list_destroy(sdb_object_t *obj)
133 {
134 sdb_object_deref(SDB_OBJ(CONN_LIST(obj)->filter));
135 } /* conn_list_destroy */
137 static void __attribute__((unused))
138 conn_fetch_destroy(sdb_object_t *obj)
139 {
140 if (CONN_FETCH(obj)->name)
141 free(CONN_FETCH(obj)->name);
142 sdb_object_deref(SDB_OBJ(CONN_FETCH(obj)->filter));
143 } /* conn_fetch_destroy */
145 static void __attribute__((unused))
146 conn_lookup_destroy(sdb_object_t *obj)
147 {
148 sdb_object_deref(SDB_OBJ(CONN_LOOKUP(obj)->matcher));
149 sdb_object_deref(SDB_OBJ(CONN_LOOKUP(obj)->filter));
150 } /* conn_lookup_destroy */
152 static void __attribute__((unused))
153 conn_ts_destroy(sdb_object_t *obj)
154 {
155 if (CONN_TS(obj)->hostname)
156 free(CONN_TS(obj)->hostname);
157 if (CONN_TS(obj)->metric)
158 free(CONN_TS(obj)->metric);
159 } /* conn_ts_destroy */
161 #ifdef __cplusplus
162 } /* extern "C" */
163 #endif
165 #endif /* ! SDB_FRONTEND_CONNECTION_H */
167 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */