1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* David M. Lee, II <dlee@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Stasis Message API.
*
* \author David M. Lee, II <dlee@digium.com>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/astobj2.h"
#include "asterisk/stasis.h"
#include "asterisk/utils.h"
/*! \internal */
struct stasis_message_type {
struct stasis_message_vtable *vtable;
char *name;
};
static struct stasis_message_vtable null_vtable = {};
static void message_type_dtor(void *obj)
{
struct stasis_message_type *type = obj;
ast_free(type->name);
type->name = NULL;
}
int stasis_message_type_create(const char *name,
struct stasis_message_vtable *vtable,
struct stasis_message_type **result)
{
struct stasis_message_type *type;
/* Check for declination */
if (name && stasis_message_type_declined(name)) {
return STASIS_MESSAGE_TYPE_DECLINED;
}
type = ao2_t_alloc(sizeof(*type), message_type_dtor, name);
if (!type) {
return STASIS_MESSAGE_TYPE_ERROR;
}
if (!vtable) {
/* Null object pattern, FTW! */
vtable = &null_vtable;
}
type->name = ast_strdup(name);
if (!type->name) {
ao2_cleanup(type);
return STASIS_MESSAGE_TYPE_ERROR;
}
type->vtable = vtable;
*result = type;
return STASIS_MESSAGE_TYPE_SUCCESS;
}
const char *stasis_message_type_name(const struct stasis_message_type *type)
{
return type->name;
}
/*! \internal */
struct stasis_message {
/*! Time the message was created */
struct timeval timestamp;
/*! Type of the message */
struct stasis_message_type *type;
/*! Where this message originated. NULL if aggregate message. */
const struct ast_eid *eid_ptr;
/*! Message content */
void *data;
/*! Where this message originated. */
struct ast_eid eid;
};
static void stasis_message_dtor(void *obj)
{
struct stasis_message *message = obj;
ao2_cleanup(message->type);
ao2_cleanup(message->data);
}
struct stasis_message *stasis_message_create_full(struct stasis_message_type *type, void *data, const struct ast_eid *eid)
{
struct stasis_message *message;
if (type == NULL || data == NULL) {
return NULL;
}
message = ao2_t_alloc(sizeof(*message), stasis_message_dtor, type->name);
if (message == NULL) {
return NULL;
}
message->timestamp = ast_tvnow();
ao2_ref(type, +1);
message->type = type;
ao2_ref(data, +1);
message->data = data;
if (eid) {
message->eid_ptr = &message->eid;
message->eid = *eid;
}
return message;
}
struct stasis_message *stasis_message_create(struct stasis_message_type *type, void *data)
{
return stasis_message_create_full(type, data, &ast_eid_default);
}
const struct ast_eid *stasis_message_eid(const struct stasis_message *msg)
{
if (msg == NULL) {
return NULL;
}
return msg->eid_ptr;
}
struct stasis_message_type *stasis_message_type(const struct stasis_message *msg)
{
if (msg == NULL) {
return NULL;
}
return msg->type;
}
void *stasis_message_data(const struct stasis_message *msg)
{
if (msg == NULL) {
return NULL;
}
return msg->data;
}
const struct timeval *stasis_message_timestamp(const struct stasis_message *msg)
{
if (msg == NULL) {
return NULL;
}
return &msg->timestamp;
}
#define INVOKE_VIRTUAL(fn, ...) \
({ \
if (!msg) { \
return NULL; \
} \
ast_assert(msg->type != NULL); \
ast_assert(msg->type->vtable != NULL); \
if (!msg->type->vtable->fn) { \
return NULL; \
} \
msg->type->vtable->fn(__VA_ARGS__); \
})
struct ast_manager_event_blob *stasis_message_to_ami(struct stasis_message *msg)
{
return INVOKE_VIRTUAL(to_ami, msg);
}
struct ast_json *stasis_message_to_json(
struct stasis_message *msg,
struct stasis_message_sanitizer *sanitize)
{
return INVOKE_VIRTUAL(to_json, msg, sanitize);
}
struct ast_event *stasis_message_to_event(struct stasis_message *msg)
{
return INVOKE_VIRTUAL(to_event, msg);
}
#define HAS_VIRTUAL(fn, msg) \
({ \
if (!msg) { \
return 0; \
} \
ast_assert(msg->type != NULL); \
ast_assert(msg->type->vtable != NULL); \
!!msg->type->vtable->fn; \
})
int stasis_message_can_be_ami(struct stasis_message *msg)
{
return HAS_VIRTUAL(to_ami, msg);
}
|
