/*!
* \brief Register for all of the apps given.
* \param session Session info struct.
* \param app_name Name of application to register.
*/
static int session_register_app(struct event_session *session,
const char *app_name)
{
SCOPED_AO2LOCK(lock, session);
ast_assert(session->ws_session != NULL);
ast_assert(session->websocket_apps != NULL);
if (ast_strlen_zero(app_name)) {
return -1;
}
if (ast_str_container_add(session->websocket_apps, app_name)) {
ast_ari_websocket_session_write(session->ws_session,
ast_ari_oom_json());
return -1;
}
stasis_app_register(app_name, app_handler, session);
return 0;
}
/*!
* \brief Creates an \ref event_session object and registers its apps with Stasis.
*
* \internal
*
* \param ser HTTP TCP/TLS Server Session (\ref ast_tcptls_session_instance).
* \param args The Stasis [app] parameters as parsed from the HTTP request
* (\ref ast_ari_events_event_websocket_args).
* \param session_id The id for the websocket session that will be created for this
* event session.
*
* \retval 0 on success
* \retval -1 on failure
*/
static int event_session_alloc(struct ast_tcptls_session_instance *ser,
struct ast_ari_events_event_websocket_args *args, const char *session_id)
{
RAII_VAR(struct event_session *, session, NULL, ao2_cleanup);
size_t size, i;
/* The request must have at least one [app] parameter */
if (args->app_count == 0) {
return event_session_allocation_error_handler(
session, ERROR_TYPE_MISSING_APP_PARAM, ser);
}
size = sizeof(*session) + strlen(session_id) + 1;
/* Instantiate the event session */
session = ao2_alloc(size, event_session_dtor);
if (!session) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
strncpy(session->session_id, session_id, size - sizeof(*session));
/* Instantiate the hash table for Stasis apps */
session->websocket_apps =
ast_str_container_alloc(APPS_NUM_BUCKETS);
if (!session->websocket_apps) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
/* Instantiate the message queue */
if (AST_VECTOR_INIT(&session->message_queue, MESSAGES_INIT_SIZE)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
/* Register the apps with Stasis */
for (i = 0; i < args->app_count; ++i) {
const char *app = args->app[i];
if (ast_strlen_zero(app)) {
return event_session_allocation_error_handler(
session, ERROR_TYPE_INVALID_APP_PARAM, ser);
}
if (ast_str_container_add(session->websocket_apps, app)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
if (stasis_app_register(app, stasis_app_message_handler, session)) {
ast_log(LOG_WARNING, "Stasis registration failed for application: '%s'\n", app);
return event_session_allocation_error_handler(
session, ERROR_TYPE_STASIS_REGISTRATION, ser);
}
}
/* Add the event session to the local registry */
if (!ao2_link(event_session_registry, session)) {
return event_session_allocation_error_handler(session, ERROR_TYPE_OOM, ser);
}
return 0;
}