resource_applications.c File Reference

/api-docs/applications.{format} implementation - Stasis application resources More...

#include "asterisk.h"
#include "asterisk/stasis_app.h"
#include "resource_applications.h"

Include dependency graph for resource_applications.c:

Go to the source code of this file.

Functions
static int	append_json (void *obj, void *arg, int flags)
void	ast_ari_applications_filter (struct ast_variable *headers, struct ast_ari_applications_filter_args *args, struct ast_ari_response *response)
	Filter application events types. More...
void	ast_ari_applications_get (struct ast_variable *headers, struct ast_ari_applications_get_args *args, struct ast_ari_response *response)
	Get details of an application. More...
void	ast_ari_applications_list (struct ast_variable *headers, struct ast_ari_applications_list_args *args, struct ast_ari_response *response)
	List all applications. More...
void	ast_ari_applications_subscribe (struct ast_variable *headers, struct ast_ari_applications_subscribe_args *args, struct ast_ari_response *response)
	Subscribe an application to a event source. More...
void	ast_ari_applications_unsubscribe (struct ast_variable *headers, struct ast_ari_applications_unsubscribe_args *args, struct ast_ari_response *response)
	Unsubscribe an application from an event source. More...

Detailed Description

/api-docs/applications.{format} implementation - Stasis application resources

Author

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

Definition in file resource_applications.c.

Function Documentation

append_json()

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

static

Definition at line 32 of file resource_applications.c.

{
    const char *app = obj;
    struct ast_json *array = arg;
 
    ast_json_array_append(array, stasis_app_to_json(app));
 
    return 0;
}

References app, array(), ast_json_array_append(), and stasis_app_to_json().

Referenced by ast_ari_applications_list().

ast_ari_applications_filter()

void ast_ari_applications_filter	(	struct ast_variable *	headers,
		struct ast_ari_applications_filter_args *	args,
		struct ast_ari_response *	response
	)

Filter application events types.

Allowed and/or disallowed event type filtering can be done. The body (parameter) should specify a JSON key/value object that describes the type of event filtering needed. One, or both of the following keys can be designated:

"allowed" - Specifies an allowed list of event types
"disallowed" - Specifies a disallowed list of event types

Further, each of those key's value should be a JSON array that holds zero, or more JSON key/value objects. Each of these objects must contain the following key with an associated value:

"type" - The type name of the event to filter

The value must be the string name (case sensitive) of the event type that needs filtering. For example:

{ "allowed": [ { "type": "StasisStart" }, { "type": "StasisEnd" } ] }

As this specifies only an allowed list, then only those two event type messages are sent to the application. No other event messages are sent.

The following rules apply:

* If the body is empty, both the allowed and disallowed filters are set empty.
* If both list types are given then both are set to their respective values (note, specifying an empty array for a given type sets that type to empty).
* If only one list type is given then only that type is set. The other type is not updated.
* An empty "allowed" list means all events are allowed.
* An empty "disallowed" list means no events are disallowed.
* Disallowed events take precedence over allowed events if the event type is specified in both lists.

Parameters

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

Definition at line 172 of file resource_applications.c.

{
    struct stasis_app *app = stasis_app_get_by_name(args->application_name);
 
    if (!app) {
        ast_ari_response_error(response, 404, "Not Found", "Application not found");
        return;
    }
 
    if (stasis_app_event_filter_set(app, args->filter)) {
        ast_ari_response_error(response, 400, "Bad Request", "Invalid format definition");
    } else {
        ast_ari_response_ok(response, stasis_app_object_to_json(app));
    }
 
    ao2_ref(app, -1);
}

References ao2_ref, app, args, ast_ari_response_error(), ast_ari_response_ok(), stasis_app_event_filter_set(), stasis_app_get_by_name(), and stasis_app_object_to_json().

Referenced by ast_ari_applications_filter_cb().

ast_ari_applications_get()

void ast_ari_applications_get	(	struct ast_variable *	headers,
		struct ast_ari_applications_get_args *	args,
		struct ast_ari_response *	response
	)

Get details of an application.

Parameters

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

Definition at line 72 of file resource_applications.c.

{
    struct ast_json *json;
 
    json = stasis_app_to_json(args->application_name);
 
    if (!json) {
        ast_ari_response_error(response, 404, "Not Found",
            "Application not found");
        return;
    }
 
    ast_ari_response_ok(response, json);
}

References args, ast_ari_response_error(), ast_ari_response_ok(), and stasis_app_to_json().

Referenced by ast_ari_applications_get_cb().

ast_ari_applications_list()

void ast_ari_applications_list	(	struct ast_variable *	headers,
		struct ast_ari_applications_list_args *	args,
		struct ast_ari_response *	response
	)

List all applications.

Parameters

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

Definition at line 42 of file resource_applications.c.

{
    RAII_VAR(struct ao2_container *, apps, NULL, ao2_cleanup);
    RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
    size_t count;
 
    apps = stasis_app_get_all();
    json = ast_json_array_create();
    if (!apps || !json) {
        ast_ari_response_error(response, 500, "Internal Server Error",
            "Allocation failed");
        return;
    }
 
    ao2_lock(apps);
    count = ao2_container_count(apps);
    ao2_callback(apps, OBJ_NOLOCK | OBJ_NODATA, append_json, json);
    ao2_unlock(apps);
 
    if (count != ast_json_array_size(json)) {
        ast_ari_response_error(response, 500, "Internal Server Error",
            "Allocation failed");
        return;
    }
 
    ast_ari_response_ok(response, ast_json_ref(json));
}

References ao2_callback, ao2_cleanup, ao2_container_count(), ao2_lock, ao2_unlock, append_json(), ast_ari_response_error(), ast_ari_response_ok(), ast_json_array_create(), ast_json_array_size(), ast_json_ref(), ast_json_unref(), NULL, OBJ_NODATA, OBJ_NOLOCK, RAII_VAR, and stasis_app_get_all().

Referenced by ast_ari_applications_list_cb().

ast_ari_applications_subscribe()

void ast_ari_applications_subscribe	(	struct ast_variable *	headers,
		struct ast_ari_applications_subscribe_args *	args,
		struct ast_ari_response *	response
	)

Subscribe an application to a event source.

Returns the state of the application after the subscriptions have changed

Parameters

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

Definition at line 89 of file resource_applications.c.

{
    RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
    enum stasis_app_subscribe_res res;
 
    if (args->event_source_count <= 0) {
        ast_ari_response_error(response, 400, "Bad Request",
            "Missing parameter eventSource");
        return;
    }
 
    if (ast_strlen_zero(args->application_name)) {
        ast_ari_response_error(response, 400, "Bad Request",
            "Missing parameter applicationName");
        return;
    }
 
    res = stasis_app_subscribe(args->application_name, args->event_source,
        args->event_source_count, &json);
 
    switch (res) {
    case STASIS_ASR_OK:
        ast_ari_response_ok(response, ast_json_ref(json));
        break;
    case STASIS_ASR_APP_NOT_FOUND:
        ast_ari_response_error(response, 404, "Not Found",
            "Application not found");
        break;
    case STASIS_ASR_EVENT_SOURCE_NOT_FOUND:
        ast_ari_response_error(response, 422, "Unprocessable Entity",
            "Event source does not exist");
        break;
    case STASIS_ASR_EVENT_SOURCE_BAD_SCHEME:
        ast_ari_response_error(response, 400, "Bad Request",
            "Invalid event source URI scheme");
        break;
    case STASIS_ASR_INTERNAL_ERROR:
        ast_ari_response_error(response, 500, "Internal Server Error",
            "Error processing request");
        break;
    }
}

References args, ast_ari_response_error(), ast_ari_response_ok(), ast_json_ref(), ast_json_unref(), ast_strlen_zero(), NULL, RAII_VAR, stasis_app_subscribe(), STASIS_ASR_APP_NOT_FOUND, STASIS_ASR_EVENT_SOURCE_BAD_SCHEME, STASIS_ASR_EVENT_SOURCE_NOT_FOUND, STASIS_ASR_INTERNAL_ERROR, and STASIS_ASR_OK.

Referenced by ast_ari_applications_subscribe_cb().

ast_ari_applications_unsubscribe()

void ast_ari_applications_unsubscribe	(	struct ast_variable *	headers,
		struct ast_ari_applications_unsubscribe_args *	args,
		struct ast_ari_response *	response
	)

Unsubscribe an application from an event source.

Returns the state of the application after the subscriptions have changed

Parameters

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

Definition at line 134 of file resource_applications.c.

{
    RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
    enum stasis_app_subscribe_res res;
 
    if (args->event_source_count == 0) {
        ast_ari_response_error(response, 400, "Bad Request",
            "Missing parameter eventSource");
        return;
    }
 
    res = stasis_app_unsubscribe(args->application_name, args->event_source,
        args->event_source_count, &json);
 
    switch (res) {
    case STASIS_ASR_OK:
        ast_ari_response_ok(response, ast_json_ref(json));
        break;
    case STASIS_ASR_APP_NOT_FOUND:
        ast_ari_response_error(response, 404, "Not Found",
            "Application not found");
        break;
    case STASIS_ASR_EVENT_SOURCE_NOT_FOUND:
        ast_ari_response_error(response, 422, "Unprocessable Entity",
            "Event source was not subscribed to");
        break;
    case STASIS_ASR_EVENT_SOURCE_BAD_SCHEME:
        ast_ari_response_error(response, 400, "Bad Request",
            "Invalid event source URI scheme");
        break;
    case STASIS_ASR_INTERNAL_ERROR:
        ast_ari_response_error(response, 500, "Internal Server Error",
            "Error processing request");
    }
}

References args, ast_ari_response_error(), ast_ari_response_ok(), ast_json_ref(), ast_json_unref(), NULL, RAII_VAR, stasis_app_unsubscribe(), STASIS_ASR_APP_NOT_FOUND, STASIS_ASR_EVENT_SOURCE_BAD_SCHEME, STASIS_ASR_EVENT_SOURCE_NOT_FOUND, STASIS_ASR_INTERNAL_ERROR, and STASIS_ASR_OK.

Referenced by ast_ari_applications_unsubscribe_cb().