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Add vtable and methods for to_json and to_ami for Stasis messages

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When a Stasis message type is defined in a loadable module, handling
those messages for AMI and res_stasis events can be cumbersome.

This patch adds a vtable to stasis_message_type, with to_ami and
to_json virtual functions. These allow messages to be handled
abstractly without putting module-specific code in core.

As an example, the VarSet AMI event was refactored to use the to_ami
virtual function.

(closes issue ASTERISK-21817)
Review: https://reviewboard.asterisk.org/r/2579/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@391403 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
David M. Lee
2013-06-11 15:46:35 +00:00
parent 2053fc3159
commit dbdb2b1b3a
8 changed files with 430 additions and 119 deletions
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48
main/manager_channels.c
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@@ -710,49 +710,6 @@ static void channel_snapshot_update(void *data, struct stasis_subscription *sub,
}
}
static void channel_varset_cb(void *data, struct stasis_subscription *sub,
struct stasis_topic *topic, struct stasis_message *message)
{
struct ast_channel_blob *obj = stasis_message_data(message);
RAII_VAR(struct ast_str *, channel_event_string, NULL, ast_free);
const char *variable = ast_json_string_get(ast_json_object_get(obj->blob, "variable"));
const char *value = ast_json_string_get(ast_json_object_get(obj->blob, "value"));
if (obj->snapshot) {
channel_event_string = ast_manager_build_channel_state_string(obj->snapshot);
} else {
channel_event_string = ast_str_create(35);
ast_str_set(&channel_event_string, 0,
"Channel: none\r\n"
"Uniqueid: none\r\n");
}
if (!channel_event_string) {
return;
}
/*** DOCUMENTATION
<managerEventInstance>
<synopsis>Raised when a variable is set to a particular value.</synopsis>
<syntax>
<xi:include xpointer="xpointer(/docs/managerEvent[@name='Newchannel']/managerEventInstance/syntax/parameter)" />
<parameter name="Variable">
<para>The variable being set.</para>
</parameter>
<parameter name="Value">
<para>The new value of the variable.</para>
</parameter>
</syntax>
</managerEventInstance>
***/
manager_event(EVENT_FLAG_DIALPLAN, "VarSet",
"%s"
"Variable: %s\r\n"
"Value: %s\r\n",
ast_str_buffer(channel_event_string),
variable, value);
}
static int userevent_exclusion_cb(const char *key)
{
if (!strcmp("type", key)) {
@@ -1279,11 +1236,6 @@ int manager_channels_init(void)
channel_snapshot_update,
NULL);
ret |= stasis_message_router_add(message_router,
ast_channel_varset_type(),
channel_varset_cb,
NULL);
ret |= stasis_message_router_add(message_router,
ast_channel_user_event_type(),
channel_user_event_cb,