resource_events.c File Reference

/api-docs/events.{format} implementation- WebSocket resource More...

#include "asterisk.h"
#include "resource_events.h"
#include "asterisk/astobj2.h"
#include "asterisk/http_websocket.h"
#include "asterisk/stasis_app.h"
#include "asterisk/vector.h"

Include dependency graph for resource_events.c:

Go to the source code of this file.

Data Structures
struct	event_session
	A wrapper for the /ref ast_ari_websocket_session. More...

Macros
#define	APPS_NUM_BUCKETS   7
#define	EVENT_SESSION_NUM_BUCKETS   23
#define	MESSAGES_INIT_SIZE   23

Enumerations
enum	event_session_error_type { ERROR_TYPE_STASIS_REGISTRATION = 1, ERROR_TYPE_OOM = 2, ERROR_TYPE_MISSING_APP_PARAM = 3, ERROR_TYPE_INVALID_APP_PARAM = 4 }
	event_session error types. More...

Functions
void	ast_ari_events_user_event (struct ast_variable *headers, struct ast_ari_events_user_event_args *args, struct ast_ari_response *response)
	Generate a user event. More...
int	ast_ari_websocket_events_event_websocket_attempted (struct ast_tcptls_session_instance *ser, struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args, const char *session_id)
	WebSocket connection for events. More...
void	ast_ari_websocket_events_event_websocket_dtor (void)
	WebSocket connection for events. More...
void	ast_ari_websocket_events_event_websocket_established (struct ast_ari_websocket_session *ws_session, struct ast_variable *headers, struct ast_ari_events_event_websocket_args *args)
	WebSocket connection for events. More...
int	ast_ari_websocket_events_event_websocket_init (void)
	WebSocket connection for events. More...
static int	event_session_alloc (struct ast_tcptls_session_instance *ser, struct ast_ari_events_event_websocket_args *args, const char *session_id)
	Creates an event_session object and registers its apps with Stasis. More...
static int	event_session_allocation_error_handler (struct event_session *session, enum event_session_error_type error, struct ast_tcptls_session_instance *ser)
	Handles event_session error processing. More...
static void	event_session_cleanup (struct event_session *session)
	Processes cleanup actions for a event_session object. More...
static int	event_session_compare (void *obj, void *arg, int flags)
	AO2 comparison function for event_session objects. More...
static void	event_session_dtor (void *obj)
	Event session object destructor (event_session). More...
static int	event_session_hash (const void *obj, const int flags)
	AO2 hash function for event_session objects. More...
static void	event_session_shutdown (struct event_session *session)
	Explicitly shutdown a session. More...
static int	event_session_shutdown_cb (void *session, void *arg, int flags)
static void	event_session_update_websocket (struct event_session *session, struct ast_ari_websocket_session *ws_session)
	Updates the websocket session for an event_session. More...
static void	stasis_app_message_handler (void *data, const char *app_name, struct ast_json *message)
	Callback handler for Stasis application messages. More...

Variables
static struct ao2_container *	event_session_registry
	Local registry for created event_session objects. More...

Detailed Description

/api-docs/events.{format} implementation- WebSocket resource

Author

David M. Lee, II dlee@.nosp@m.digi.nosp@m.um.co.nosp@m.m

Definition in file resource_events.c.

Macro Definition Documentation

APPS_NUM_BUCKETS

#define APPS_NUM_BUCKETS   7

Number of buckets for a websocket apps container. Remember to keep it a prime number!

Definition at line 42 of file resource_events.c.

Referenced by event_session_alloc().

EVENT_SESSION_NUM_BUCKETS

#define EVENT_SESSION_NUM_BUCKETS   23

Number of buckets for the event session registry. Remember to keep it a prime number!

Definition at line 39 of file resource_events.c.

Referenced by ast_ari_websocket_events_event_websocket_init().

MESSAGES_INIT_SIZE

#define MESSAGES_INIT_SIZE   23

Initial size of a message queue.

Definition at line 45 of file resource_events.c.

Referenced by event_session_alloc().

Enumeration Type Documentation

event_session_error_type

enum event_session_error_type

event_session error types.

Enumerator
ERROR_TYPE_STASIS_REGISTRATION	Stasis failed to register the application.
ERROR_TYPE_OOM	Insufficient memory to create the event session.
ERROR_TYPE_MISSING_APP_PARAM	HTTP request was missing an [app] parameter.
ERROR_TYPE_INVALID_APP_PARAM	HTTP request contained an invalid [app] parameter.

Definition at line 58 of file resource_events.c.

                              {
   ERROR_TYPE_STASIS_REGISTRATION = 1,  /*!< Stasis failed to register the application. */
   ERROR_TYPE_OOM = 2,                  /*!< Insufficient memory to create the event
                                             session. */
   ERROR_TYPE_MISSING_APP_PARAM = 3,    /*!< HTTP request was missing an [app] parameter. */
   ERROR_TYPE_INVALID_APP_PARAM = 4,    /*!< HTTP request contained an invalid [app]
                                             parameter. */
};

Function Documentation

ast_ari_events_user_event()

void ast_ari_events_user_event	(	struct ast_variable *	headers,
		struct ast_ari_events_user_event_args *	args,
		struct ast_ari_response *	response
	)

Generate a user event.

Parameters

	headers	HTTP headers
	args	Swagger parameters
[out]	response	HTTP response

Definition at line 532 of file resource_events.c.

References ast_ari_events_user_event_args::application, ast_ari_events_user_event_parse_body(), ast_ari_response_error(), ast_ari_response_no_content(), ast_json_object_get(), ast_strlen_zero, ast_ari_events_user_event_args::event_name, NULL, ast_ari_events_user_event_args::source, ast_ari_events_user_event_args::source_count, STASIS_APP_USER_APP_NOT_FOUND, stasis_app_user_event(), STASIS_APP_USER_EVENT_SOURCE_BAD_SCHEME, STASIS_APP_USER_EVENT_SOURCE_NOT_FOUND, STASIS_APP_USER_INTERNAL_ERROR, STASIS_APP_USER_OK, STASIS_APP_USER_USEREVENT_INVALID, and ast_ari_events_user_event_args::variables.

Referenced by ast_ari_events_user_event_cb().

{
   enum stasis_app_user_event_res res;
   struct ast_json *json_variables = NULL;

   if (args->variables) {
      ast_ari_events_user_event_parse_body(args->variables, args);
      json_variables = ast_json_object_get(args->variables, "variables");
   }

   if (ast_strlen_zero(args->application)) {
      ast_ari_response_error(response, 400, "Bad Request",
         "Missing parameter application");
      return;
   }

   res = stasis_app_user_event(args->application,
      args->event_name,
      args->source, args->source_count,
      json_variables);

   switch (res) {
   case STASIS_APP_USER_OK:
      ast_ari_response_no_content(response);
      break;

   case STASIS_APP_USER_APP_NOT_FOUND:
      ast_ari_response_error(response, 404, "Not Found",
         "Application not found");
      break;

   case STASIS_APP_USER_EVENT_SOURCE_NOT_FOUND:
      ast_ari_response_error(response, 422, "Unprocessable Entity",
         "Event source was not found");
      break;

   case STASIS_APP_USER_EVENT_SOURCE_BAD_SCHEME:
      ast_ari_response_error(response, 400, "Bad Request",
         "Invalid event source URI scheme");
      break;

   case STASIS_APP_USER_USEREVENT_INVALID:
      ast_ari_response_error(response, 400, "Bad Request",
         "Invalid userevnet data");
      break;

   case STASIS_APP_USER_INTERNAL_ERROR:
   default:
      ast_ari_response_error(response, 500, "Internal Server Error",
         "Error processing request");
   }
}

ast_ari_websocket_events_event_websocket_attempted()

int ast_ari_websocket_events_event_websocket_attempted	(	struct ast_tcptls_session_instance *	ser,
		struct ast_variable *	headers,
		struct ast_ari_events_event_websocket_args *	args,
		const char *	session_id
	)

WebSocket connection for events.

Parameters

ser	HTTP TCP/TLS Server Session
headers	HTTP headers
args	Swagger parameters
session_id	The id of the current session.

Return values

0	success
non-zero	error

Definition at line 488 of file resource_events.c.

References ast_debug, and event_session_alloc().

Referenced by ast_ari_events_event_websocket_ws_attempted_cb().

{
   ast_debug(3, "/events WebSocket attempted\n");

   /* Create the event session */
   return event_session_alloc(ser, args, session_id);
}

ast_ari_websocket_events_event_websocket_dtor()

void ast_ari_websocket_events_event_websocket_dtor

(

void

)

WebSocket connection for events.

Returns

Nothing

Definition at line 465 of file resource_events.c.

References ao2_callback, ao2_cleanup, event_session_shutdown_cb(), NULL, OBJ_MULTIPLE, and OBJ_NODATA.

Referenced by load_module(), and unload_module().

{
   ao2_callback(event_session_registry, OBJ_MULTIPLE | OBJ_NODATA, event_session_shutdown_cb, NULL);

   ao2_cleanup(event_session_registry);
   event_session_registry = NULL;
}

ast_ari_websocket_events_event_websocket_established()

void ast_ari_websocket_events_event_websocket_established	(	struct ast_ari_websocket_session *	session,
		struct ast_variable *	headers,
		struct ast_ari_events_event_websocket_args *	args
	)

WebSocket connection for events.

Parameters

session	ARI WebSocket.
headers	HTTP headers.
args	Swagger parameters.
session_id	The id of the current session.

Definition at line 498 of file resource_events.c.

References ao2_find, ao2_ref, ao2_unlink, ast_ari_websocket_session_id(), ast_ari_websocket_session_read(), ast_assert, ast_debug, ast_json_unref(), ast_log, event_session_cleanup(), event_session_update_websocket(), LOG_WARNING, NULL, OBJ_SEARCH_KEY, and session.

Referenced by ast_ari_events_event_websocket_ws_established_cb().

{
   struct event_session *session;

   struct ast_json *msg;
   const char *session_id;

   ast_debug(3, "/events WebSocket established\n");

   ast_assert(ws_session != NULL);

   session_id = ast_ari_websocket_session_id(ws_session);

   /* Find the event_session and update its websocket  */
   session = ao2_find(event_session_registry, session_id, OBJ_SEARCH_KEY);
   if (session) {
      ao2_unlink(event_session_registry, session);
      event_session_update_websocket(session, ws_session);
   } else {
      ast_log(LOG_WARNING,
         "Failed to locate an event session for the provided websocket session\n");
   }

   /* We don't process any input, but we'll consume it waiting for EOF */
   while ((msg = ast_ari_websocket_session_read(ws_session))) {
      ast_json_unref(msg);
   }

   event_session_cleanup(session);
   ao2_ref(session, -1);
}

ast_ari_websocket_events_event_websocket_init()

int ast_ari_websocket_events_event_websocket_init

(

void

)

WebSocket connection for events.

Return values

0	success
-1	error

Definition at line 473 of file resource_events.c.

References AO2_ALLOC_OPT_LOCK_MUTEX, ao2_container_alloc_hash, ast_log, event_session_compare(), event_session_hash(), EVENT_SESSION_NUM_BUCKETS, LOG_WARNING, and NULL.

Referenced by load_module().

{
   /* Try to instantiate the registry */
   event_session_registry = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0,
      EVENT_SESSION_NUM_BUCKETS, event_session_hash, NULL, event_session_compare);
   if (!event_session_registry) {
      /* This is bad, bad. */
      ast_log(LOG_WARNING,
             "Failed to allocate the local registry for websocket applications\n");
      return -1;
   }

   return 0;
}

event_session_alloc()

static int event_session_alloc ( struct ast_tcptls_session_instance *  ser, struct ast_ari_events_event_websocket_args *  args, const char *  session_id  )

static

Creates an event_session object and registers its apps with Stasis.

Definition at line 388 of file resource_events.c.

References ao2_alloc, ao2_cleanup, ao2_link, ast_ari_events_event_websocket_args::app, app, ast_ari_events_event_websocket_args::app_count, APPS_NUM_BUCKETS, ast_log, ast_str_container_add(), ast_str_container_alloc, ast_strlen_zero, AST_VECTOR_INIT, ERROR_TYPE_INVALID_APP_PARAM, ERROR_TYPE_MISSING_APP_PARAM, ERROR_TYPE_OOM, ERROR_TYPE_STASIS_REGISTRATION, event_session_allocation_error_handler(), event_session_dtor(), handler(), LOG_WARNING, MESSAGES_INIT_SIZE, NULL, RAII_VAR, session, stasis_app_message_handler(), stasis_app_register(), stasis_app_register_all(), and ast_ari_events_event_websocket_args::subscribe_all.

Referenced by ast_ari_websocket_events_event_websocket_attempted().

{
   RAII_VAR(struct event_session *, session, NULL, ao2_cleanup);
   int (* register_handler)(const char *, stasis_app_cb handler, void *data);
   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 */
   if (args->subscribe_all) {
      register_handler = &stasis_app_register_all;
   } else {
      register_handler = &stasis_app_register;
   }

   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 (register_handler(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;
}

event_session_allocation_error_handler()

static int event_session_allocation_error_handler ( struct event_session *  session, enum event_session_error_type  error, struct ast_tcptls_session_instance *  ser  )

static

Handles event_session error processing.

Definition at line 339 of file resource_events.c.

References ast_http_error(), ERROR_TYPE_INVALID_APP_PARAM, ERROR_TYPE_MISSING_APP_PARAM, ERROR_TYPE_OOM, ERROR_TYPE_STASIS_REGISTRATION, and event_session_cleanup().

Referenced by event_session_alloc().

{
   /* Notify the client */
   switch (error) {
   case ERROR_TYPE_STASIS_REGISTRATION:
      ast_http_error(ser, 500, "Internal Server Error",
         "Stasis registration failed");
      break;

   case ERROR_TYPE_OOM:
      ast_http_error(ser, 500, "Internal Server Error",
         "Allocation failed");
      break;

   case ERROR_TYPE_MISSING_APP_PARAM:
      ast_http_error(ser, 400, "Bad Request",
         "HTTP request is missing param: [app]");
      break;

   case ERROR_TYPE_INVALID_APP_PARAM:
      ast_http_error(ser, 400, "Bad Request",
         "Invalid application provided in param [app].");
      break;

   default:
      break;
   }

   /* Cleanup the session */
   event_session_cleanup(session);
   return -1;
}

event_session_cleanup()

static void event_session_cleanup ( struct event_session *  session )

static

Processes cleanup actions for a event_session object.

Definition at line 297 of file resource_events.c.

References ao2_unlink, and event_session_shutdown().

Referenced by ast_ari_websocket_events_event_websocket_established(), event_session_allocation_error_handler(), and event_session_shutdown_cb().

{
   if (!session) {
      return;
   }

   event_session_shutdown(session);
   if (event_session_registry) {
      ao2_unlink(event_session_registry, session);
   }
}

event_session_compare()

static int event_session_compare ( void *  obj, void *  arg, int  flags  )

static

AO2 comparison function for event_session objects.

Definition at line 153 of file resource_events.c.

References CMP_MATCH, OBJ_SEARCH_KEY, OBJ_SEARCH_MASK, OBJ_SEARCH_OBJECT, and OBJ_SEARCH_PARTIAL_KEY.

Referenced by ast_ari_websocket_events_event_websocket_init().

{
   const struct event_session *object_left = obj;
   const struct event_session *object_right = arg;
   const char *right_key = arg;
   int cmp = 0;

   switch (flags & OBJ_SEARCH_MASK) {
   case OBJ_SEARCH_OBJECT:
      right_key = object_right->session_id;
      /* Fall through */
   case OBJ_SEARCH_KEY:
      cmp = strcmp(object_left->session_id, right_key);
      break;
   case OBJ_SEARCH_PARTIAL_KEY:
      cmp = strncmp(object_left->session_id, right_key, strlen(right_key));
      break;
   default:
      break;
   }

   return cmp ? 0 : CMP_MATCH;
}

event_session_dtor()

static void event_session_dtor ( void *  obj )

static

Event session object destructor (event_session).

Definition at line 316 of file resource_events.c.

References ast_assert, AST_VECTOR_SIZE, NULL, session, event_session::websocket_apps, and event_session::ws_session.

Referenced by event_session_alloc().

{
#ifdef AST_DEVMODE /* Avoid unused variable warning */
   struct event_session *session = obj;
#endif

   /* event_session_shutdown should have been called before now */
   ast_assert(session->ws_session == NULL);
   ast_assert(session->websocket_apps == NULL);
   ast_assert(AST_VECTOR_SIZE(&session->message_queue) == 0);
}

event_session_hash()

static int event_session_hash ( const void *  obj, const int  flags  )

static

AO2 hash function for event_session objects.

Computes hash value for the given event_session, with respect to the provided search flags.

Definition at line 191 of file resource_events.c.

References ast_assert, ast_str_hash(), OBJ_SEARCH_KEY, OBJ_SEARCH_MASK, OBJ_SEARCH_OBJECT, and session.

Referenced by ast_ari_websocket_events_event_websocket_init().

{
   const struct event_session *session;
   const char *key;

   switch (flags & OBJ_SEARCH_MASK) {
   case OBJ_SEARCH_KEY:
      key = obj;
      break;
   case OBJ_SEARCH_OBJECT:
      session = obj;
      key = session->session_id;
      break;
   default:
      /* Hash can only work on something with a full key. */
      ast_assert(0);
      return 0;
   }
   return ast_str_hash(key);
}

event_session_shutdown()

static void event_session_shutdown ( struct event_session *  session )

static

Explicitly shutdown a session.

An explicit shutdown is necessary, since the stasis_app has a reference to this session. We also need to be sure to null out the ws_session field, since the websocket is about to go away.

Definition at line 223 of file resource_events.c.

References ao2_cleanup, ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next, app, ast_json_unref(), AST_VECTOR_FREE, AST_VECTOR_GET, AST_VECTOR_SIZE, lock, NULL, SCOPED_AO2LOCK, stasis_app_unregister(), event_session::websocket_apps, and event_session::ws_session.

Referenced by event_session_cleanup().

{
   struct ao2_iterator i;
   char *app;
   int j;
   SCOPED_AO2LOCK(lock, session);

   /* Clean up the websocket_apps container */
   if (session->websocket_apps) {
      i = ao2_iterator_init(session->websocket_apps, 0);
      while ((app = ao2_iterator_next(&i))) {
         stasis_app_unregister(app);
         ao2_cleanup(app);
      }
      ao2_iterator_destroy(&i);
      ao2_cleanup(session->websocket_apps);
      session->websocket_apps = NULL;
   }

   /* Clean up the message_queue container */
   for (j = 0; j < AST_VECTOR_SIZE(&session->message_queue); j++) {
      struct ast_json *msg = AST_VECTOR_GET(&session->message_queue, j);
      ast_json_unref(msg);
   }
   AST_VECTOR_FREE(&session->message_queue);

   /* Remove the handle to the underlying websocket session */
   session->ws_session = NULL;
}

event_session_shutdown_cb()

static int event_session_shutdown_cb ( void *  session, void *  arg, int  flags  )

static

Definition at line 458 of file resource_events.c.

References event_session_cleanup().

Referenced by ast_ari_websocket_events_event_websocket_dtor().

{
   event_session_cleanup(session);

   return 0;
}

event_session_update_websocket()

static void event_session_update_websocket ( struct event_session *  session, struct ast_ari_websocket_session *  ws_session  )

static

Updates the websocket session for an event_session.

The websocket for the given event_session will be updated to the value of the ws_session argument.

If the value of the ws_session is not NULL and there are messages in the event session's message_queue, the messages are dispatched and removed from the queue.

Definition at line 269 of file resource_events.c.

References ao2_lock, ao2_unlock, ast_ari_websocket_session_write(), ast_assert, ast_json_unref(), AST_VECTOR_ELEM_CLEANUP_NOOP, AST_VECTOR_GET, AST_VECTOR_RESET, AST_VECTOR_SIZE, NULL, and event_session::ws_session.

Referenced by ast_ari_websocket_events_event_websocket_established().

{
   int i;

   ast_assert(session != NULL);

   ao2_lock(session);

   session->ws_session = ws_session;

   for (i = 0; i < AST_VECTOR_SIZE(&session->message_queue); i++) {
      struct ast_json *msg = AST_VECTOR_GET(&session->message_queue, i);
      ast_ari_websocket_session_write(session->ws_session, msg);
      ast_json_unref(msg);
   }

   AST_VECTOR_RESET(&session->message_queue, AST_VECTOR_ELEM_CLEANUP_NOOP);
   ao2_unlock(session);
}

stasis_app_message_handler()

static void stasis_app_message_handler ( void *  data, const char *  app_name, struct ast_json *  message  )

static

Callback handler for Stasis application messages.

Definition at line 79 of file resource_events.c.

References ao2_find, ao2_lock, ao2_unlock, ast_ari_json_format(), ast_ari_websocket_session_get_remote_addr(), ast_ari_websocket_session_write(), ast_assert, ast_json_dump_string_format(), ast_json_free(), ast_json_object_get(), ast_json_object_set(), ast_json_ref(), ast_json_string_create(), ast_json_string_get(), ast_log, ast_sockaddr_stringify(), AST_VECTOR_APPEND, ast_verbose(), LOG_WARNING, NULL, OBJ_NODATA, OBJ_UNLINK, S_OR, session, stasis_app_event_allowed(), stasis_app_get_debug_by_name(), str, event_session::websocket_apps, and event_session::ws_session.

Referenced by event_session_alloc().

{
   struct event_session *session = data;
   const char *msg_type, *msg_application;
   int app_debug_enabled;

   ast_assert(session != NULL);

   /*
    * We need to get the debug flag before lockinf session
    * to help prevent a deadlock with the apps_registry container.
    */
   app_debug_enabled = stasis_app_get_debug_by_name(app_name);

   ao2_lock(session);

   msg_type = S_OR(ast_json_string_get(ast_json_object_get(message, "type")), "");
   msg_application = S_OR(
      ast_json_string_get(ast_json_object_get(message, "application")), "");

   /* If we've been replaced, remove the application from our local
      websocket_apps container */
   if (strcmp(msg_type, "ApplicationReplaced") == 0 &&
      strcmp(msg_application, app_name) == 0) {
      ao2_find(session->websocket_apps, msg_application,
         OBJ_UNLINK | OBJ_NODATA);
   }

   /* Now, we need to determine our state to see how we will handle the message */
   if (ast_json_object_set(message, "application", ast_json_string_create(app_name))) {
      /* We failed to add an application element to our json message */
      ast_log(LOG_WARNING,
              "Failed to dispatch '%s' message from Stasis app '%s'; could not update message\n",
              msg_type,
              msg_application);
   } else if (!session->ws_session) {
      /* If the websocket is NULL, the message goes to the queue */
      if (!AST_VECTOR_APPEND(&session->message_queue, message)) {
         ast_json_ref(message);
      }
      ast_log(LOG_WARNING,
            "Queued '%s' message for Stasis app '%s'; websocket is not ready\n",
            msg_type,
            msg_application);
   } else if (stasis_app_event_allowed(app_name, message)) {
      if (app_debug_enabled) {
         char *str = ast_json_dump_string_format(message, ast_ari_json_format());

         ast_verbose("<--- Sending ARI event to %s --->\n%s\n",
            ast_sockaddr_stringify(ast_ari_websocket_session_get_remote_addr(session->ws_session)),
            str);
         ast_json_free(str);
      }

      /* We are ready to publish the message */
      ast_ari_websocket_session_write(session->ws_session, message);
   }

   ao2_unlock(session);
}

Variable Documentation

event_session_registry

struct ao2_container* event_session_registry

static

Local registry for created event_session objects.

Definition at line 68 of file resource_events.c.