stasis_endpoints.c File Reference

Stasis endpoint API. More...

#include "asterisk.h"
#include "asterisk/astobj2.h"
#include "asterisk/stasis.h"
#include "asterisk/stasis_endpoints.h"

Include dependency graph for stasis_endpoints.c:

Go to the source code of this file.

Functions
struct stasis_message *	ast_endpoint_blob_create (struct ast_endpoint *endpoint, struct stasis_message_type *type, struct ast_json *blob)
	Creates a ast_endpoint_blob message. More...
void	ast_endpoint_blob_publish (struct ast_endpoint *endpoint, struct stasis_message_type *type, struct ast_json *blob)
	Creates and publishes a ast_endpoint_blob message. More...
struct stasis_cache *	ast_endpoint_cache (void)
	Backend cache for ast_endpoint_topic_all_cached(). More...
struct stasis_cp_all *	ast_endpoint_cache_all (void)
struct ast_endpoint_snapshot *	ast_endpoint_latest_snapshot (const char *tech, const char *name)
	Retrieve the most recent snapshot for the endpoint with the given name. More...
struct ast_json *	ast_endpoint_snapshot_to_json (const struct ast_endpoint_snapshot *snapshot, const struct stasis_message_sanitizer *sanitize)
	Build a JSON object from a ast_endpoint_snapshot. More...
int	ast_endpoint_stasis_init (void)
	Initialization function for endpoint stasis support. More...
struct stasis_topic *	ast_endpoint_topic_all (void)
	Topic for all endpoint related messages. More...
struct stasis_topic *	ast_endpoint_topic_all_cached (void)
	Cached topic for all endpoint related messages. More...
static struct ast_manager_event_blob *	contactstatus_to_ami (struct stasis_message *msg)
static struct ast_json *	contactstatus_to_json (struct stasis_message *msg, const struct stasis_message_sanitizer *sanitize)
static void	endpoint_blob_dtor (void *obj)
static const char *	endpoint_snapshot_get_id (struct stasis_message *message)
	Callback extract a unique identity from a snapshot message. More...
static void	endpoints_stasis_cleanup (void)
static struct ast_manager_event_blob *	peerstatus_to_ami (struct stasis_message *msg)
static struct ast_json *	peerstatus_to_json (struct stasis_message *msg, const struct stasis_message_sanitizer *sanitize)
	STASIS_MESSAGE_TYPE_DEFN (ast_endpoint_contact_state_type,.to_ami=contactstatus_to_ami,.to_json=contactstatus_to_json)
	STASIS_MESSAGE_TYPE_DEFN (ast_endpoint_snapshot_type)
	STASIS_MESSAGE_TYPE_DEFN (ast_endpoint_state_type,.to_ami=peerstatus_to_ami,.to_json=peerstatus_to_json,)

Variables
static struct stasis_cp_all *	endpoint_cache_all

Detailed Description

Stasis endpoint API.

Author

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

Definition in file stasis_endpoints.c.

Function Documentation

ast_endpoint_snapshot_to_json()

struct ast_json * ast_endpoint_snapshot_to_json	(	const struct ast_endpoint_snapshot *	snapshot,
		const struct stasis_message_sanitizer *	sanitize
	)

Build a JSON object from a ast_endpoint_snapshot.

Parameters

snapshot	Endpoint snapshot.
sanitize	The message sanitizer to use on the snapshot

Returns

JSON object representing endpoint snapshot.

Return values

NULL

on error

Definition at line 398 of file stasis_endpoints.c.

{
    struct ast_json *json;
    struct ast_json *channel_array;
    int i;
 
    json = ast_json_pack("{s: s, s: s, s: s, s: []}",
        "technology", snapshot->tech,
        "resource", snapshot->resource,
        "state", ast_endpoint_state_to_string(snapshot->state),
        "channel_ids");
 
    if (json == NULL) {
        return NULL;
    }
 
    if (snapshot->max_channels != -1) {
        int res = ast_json_object_set(json, "max_channels",
            ast_json_integer_create(snapshot->max_channels));
        if (res != 0) {
            ast_json_unref(json);
 
            return NULL;
        }
    }
 
    channel_array = ast_json_object_get(json, "channel_ids");
    ast_assert(channel_array != NULL);
    for (i = 0; i < snapshot->num_channels; ++i) {
        int res;
 
        if (sanitize && sanitize->channel_id
            && sanitize->channel_id(snapshot->channel_ids[i])) {
            continue;
        }
 
        res = ast_json_array_append(channel_array,
            ast_json_string_create(snapshot->channel_ids[i]));
        if (res != 0) {
            ast_json_unref(json);
 
            return NULL;
        }
    }
 
    return json;
}

References ast_assert, ast_endpoint_state_to_string(), ast_json_array_append(), ast_json_integer_create(), ast_json_object_get(), ast_json_object_set(), ast_json_pack(), ast_json_string_create(), ast_json_unref(), stasis_message_sanitizer::channel_id, ast_endpoint_snapshot::channel_ids, ast_endpoint_snapshot::max_channels, NULL, ast_endpoint_snapshot::num_channels, ast_endpoint_snapshot::resource, ast_endpoint_snapshot::state, and ast_endpoint_snapshot::tech.

Referenced by ast_ari_endpoints_get(), ast_ari_endpoints_list(), ast_ari_endpoints_list_by_tech(), contactstatus_to_json(), message_received_handler(), multi_user_event_to_json(), peerstatus_to_json(), and simple_endpoint_event().

ast_endpoint_stasis_init()

int ast_endpoint_stasis_init

(

void

)

Initialization function for endpoint stasis support.

Returns

0 on success.

non-zero on error.

Since

12

Definition at line 458 of file stasis_endpoints.c.

{
    int res = 0;
    ast_register_cleanup(endpoints_stasis_cleanup);
 
    endpoint_cache_all = stasis_cp_all_create("endpoint:all",
        endpoint_snapshot_get_id);
    if (!endpoint_cache_all) {
        return -1;
    }
 
    res |= STASIS_MESSAGE_TYPE_INIT(ast_endpoint_snapshot_type);
    res |= STASIS_MESSAGE_TYPE_INIT(ast_endpoint_state_type);
    res |= STASIS_MESSAGE_TYPE_INIT(ast_endpoint_contact_state_type);
 
    return res;
}

References ast_endpoint_contact_state_type(), ast_endpoint_snapshot_type(), ast_endpoint_state_type(), ast_register_cleanup(), endpoint_cache_all, endpoint_snapshot_get_id(), endpoints_stasis_cleanup(), stasis_cp_all_create(), and STASIS_MESSAGE_TYPE_INIT.

Referenced by asterisk_daemon().

contactstatus_to_ami()

static struct ast_manager_event_blob * contactstatus_to_ami ( struct stasis_message *  msg )

static

Definition at line 203 of file stasis_endpoints.c.

{
    struct ast_endpoint_blob *obj = stasis_message_data(msg);
    RAII_VAR(struct ast_str *, contactstatus_event_string, ast_str_create(64), ast_free);
    const char *value;
 
    if (!(value = ast_json_string_get(ast_json_object_get(obj->blob, "uri")))) {
        return NULL;
    }
    ast_str_append(&contactstatus_event_string, 0, "URI: %s\r\n", value);
 
    if (!(value = ast_json_string_get(ast_json_object_get(obj->blob, "contact_status")))) {
        return NULL;
    }
    ast_str_append(&contactstatus_event_string, 0, "ContactStatus: %s\r\n", value);
 
    if (!(value = ast_json_string_get(ast_json_object_get(obj->blob, "aor")))) {
        return NULL;
    }
    ast_str_append(&contactstatus_event_string, 0, "AOR: %s\r\n", value);
 
    if (!(value = ast_json_string_get(ast_json_object_get(obj->blob, "endpoint_name")))) {
        return NULL;
    }
    ast_str_append(&contactstatus_event_string, 0, "EndpointName: %s\r\n", value);
 
    if ((value = ast_json_string_get(ast_json_object_get(obj->blob, "roundtrip_usec")))) {
        ast_str_append(&contactstatus_event_string, 0, "RoundtripUsec: %s\r\n", value);
    }
 
    return ast_manager_event_blob_create(EVENT_FLAG_SYSTEM, "ContactStatus",
        "%s", ast_str_buffer(contactstatus_event_string));
}

References ast_free, ast_json_object_get(), ast_json_string_get(), ast_manager_event_blob_create(), ast_str_append(), ast_str_buffer(), ast_str_create, ast_endpoint_blob::blob, EVENT_FLAG_SYSTEM, NULL, RAII_VAR, stasis_message_data(), and value.

contactstatus_to_json()

static struct ast_json * contactstatus_to_json ( struct stasis_message *  msg, const struct stasis_message_sanitizer *  sanitize  )

static

Definition at line 237 of file stasis_endpoints.c.

{
    struct ast_endpoint_blob *obj = stasis_message_data(msg);
    struct ast_json *json_endpoint;
    struct ast_json *json_final;
    const char *rtt;
    const struct timeval *tv = stasis_message_timestamp(msg);
 
    json_endpoint = ast_endpoint_snapshot_to_json(obj->snapshot, NULL);
    if (!json_endpoint) {
        return NULL;
    }
 
    /* The roundtrip time is optional. */
    rtt = ast_json_string_get(ast_json_object_get(obj->blob, "roundtrip_usec"));
    if (!ast_strlen_zero(rtt)) {
        json_final = ast_json_pack("{s: s, s: o, s: o, s: { s: s, s: s, s: s, s: s } } ",
            "type", "ContactStatusChange",
            "timestamp", ast_json_timeval(*tv, NULL),
            "endpoint", json_endpoint,
            "contact_info",
            "uri", ast_json_string_get(ast_json_object_get(obj->blob, "uri")),
            "contact_status", ast_json_string_get(ast_json_object_get(obj->blob,
                "contact_status")),
            "aor", ast_json_string_get(ast_json_object_get(obj->blob, "aor")),
            "roundtrip_usec", rtt);
    } else {
        json_final = ast_json_pack("{s: s, s: o, s: o, s: { s: s, s: s, s: s } } ",
            "type", "ContactStatusChange",
            "timestamp", ast_json_timeval(*tv, NULL),
            "endpoint", json_endpoint,
            "contact_info",
            "uri", ast_json_string_get(ast_json_object_get(obj->blob, "uri")),
            "contact_status", ast_json_string_get(ast_json_object_get(obj->blob,
                "contact_status")),
            "aor", ast_json_string_get(ast_json_object_get(obj->blob, "aor")));
    }
    if (!json_final) {
        ast_json_unref(json_endpoint);
    }
 
    return json_final;
}

References ast_endpoint_snapshot_to_json(), ast_json_object_get(), ast_json_pack(), ast_json_string_get(), ast_json_timeval(), ast_json_unref(), ast_strlen_zero(), ast_endpoint_blob::blob, NULL, ast_endpoint_blob::snapshot, stasis_message_data(), and stasis_message_timestamp().

endpoint_blob_dtor()

static void endpoint_blob_dtor ( void *  obj )

static

Definition at line 286 of file stasis_endpoints.c.

{
    struct ast_endpoint_blob *event = obj;
    ao2_cleanup(event->snapshot);
    ast_json_unref(event->blob);
}

References ao2_cleanup, and ast_json_unref().

Referenced by ast_endpoint_blob_create().

endpoint_snapshot_get_id()

static const char * endpoint_snapshot_get_id ( struct stasis_message *  message )

static

Callback extract a unique identity from a snapshot message.

This identity is unique to the underlying object of the snapshot, such as the UniqueId field of a channel.

Parameters

message

Message to extract id from.

Returns

String representing the snapshot's id.

Return values

NULL	if the message_type of the message isn't a handled snapshot.

Since

12

Definition at line 384 of file stasis_endpoints.c.

{
    struct ast_endpoint_snapshot *snapshot;
 
    if (ast_endpoint_snapshot_type() != stasis_message_type(message)) {
        return NULL;
    }
 
    snapshot = stasis_message_data(message);
 
    return snapshot->id;
}

References ast_endpoint_snapshot_type(), ast_endpoint_snapshot::id, NULL, stasis_message_data(), and stasis_message_type().

Referenced by ast_endpoint_stasis_init().

endpoints_stasis_cleanup()

static void endpoints_stasis_cleanup ( void  )

static

Definition at line 448 of file stasis_endpoints.c.

{
    STASIS_MESSAGE_TYPE_CLEANUP(ast_endpoint_snapshot_type);
    STASIS_MESSAGE_TYPE_CLEANUP(ast_endpoint_state_type);
    STASIS_MESSAGE_TYPE_CLEANUP(ast_endpoint_contact_state_type);
 
    ao2_cleanup(endpoint_cache_all);
    endpoint_cache_all = NULL;
}

References ao2_cleanup, ast_endpoint_contact_state_type(), ast_endpoint_snapshot_type(), ast_endpoint_state_type(), endpoint_cache_all, NULL, and STASIS_MESSAGE_TYPE_CLEANUP.

Referenced by ast_endpoint_stasis_init().

peerstatus_to_ami()

static struct ast_manager_event_blob * peerstatus_to_ami ( struct stasis_message *  msg )

static

Definition at line 128 of file stasis_endpoints.c.

{
    struct ast_endpoint_blob *obj = stasis_message_data(msg);
    RAII_VAR(struct ast_str *, peerstatus_event_string, ast_str_create(64), ast_free);
    const char *value;
 
    /* peer_status is the only *required* thing */
    if (!(value = ast_json_string_get(ast_json_object_get(obj->blob, "peer_status")))) {
        return NULL;
    }
    ast_str_append(&peerstatus_event_string, 0, "PeerStatus: %s\r\n", value);
 
    if ((value = ast_json_string_get(ast_json_object_get(obj->blob, "cause")))) {
        ast_str_append(&peerstatus_event_string, 0, "Cause: %s\r\n", value);
    }
    if ((value = ast_json_string_get(ast_json_object_get(obj->blob, "address")))) {
        ast_str_append(&peerstatus_event_string, 0, "Address: %s\r\n", value);
    }
    if ((value = ast_json_string_get(ast_json_object_get(obj->blob, "port")))) {
        ast_str_append(&peerstatus_event_string, 0, "Port: %s\r\n", value);
    }
    if ((value = ast_json_string_get(ast_json_object_get(obj->blob, "time")))) {
        ast_str_append(&peerstatus_event_string, 0, "Time: %s\r\n", value);
    }
 
    return ast_manager_event_blob_create(EVENT_FLAG_SYSTEM, "PeerStatus",
        "ChannelType: %s\r\n"
        "Peer: %s/%s\r\n"
        "%s",
        obj->snapshot->tech,
        obj->snapshot->tech,
        obj->snapshot->resource,
        ast_str_buffer(peerstatus_event_string));
}

References ast_free, ast_json_object_get(), ast_json_string_get(), ast_manager_event_blob_create(), ast_str_append(), ast_str_buffer(), ast_str_create, ast_endpoint_blob::blob, EVENT_FLAG_SYSTEM, NULL, RAII_VAR, ast_endpoint_snapshot::resource, ast_endpoint_blob::snapshot, stasis_message_data(), ast_endpoint_snapshot::tech, and value.

peerstatus_to_json()

static struct ast_json * peerstatus_to_json ( struct stasis_message *  msg, const struct stasis_message_sanitizer *  sanitize  )

static

Definition at line 163 of file stasis_endpoints.c.

{
    struct ast_endpoint_blob *obj = stasis_message_data(msg);
    struct ast_json *json_endpoint;
    struct ast_json *json_peer;
    struct ast_json *json_final;
    const struct timeval *tv = stasis_message_timestamp(msg);
 
    json_endpoint = ast_endpoint_snapshot_to_json(obj->snapshot, NULL);
    if (!json_endpoint) {
        return NULL;
    }
 
    json_peer = ast_json_object_create();
    if (!json_peer) {
        ast_json_unref(json_endpoint);
        return NULL;
    }
 
    /* Copy all fields from the blob */
    ast_json_object_update(json_peer, obj->blob);
 
    json_final = ast_json_pack("{s: s, s: o, s: o, s: o }",
        "type", "PeerStatusChange",
        "timestamp", ast_json_timeval(*tv, NULL),
        "endpoint", json_endpoint,
        "peer", json_peer);
    if (!json_final) {
        ast_json_unref(json_endpoint);
        ast_json_unref(json_peer);
    }
 
    return json_final;
}

References ast_endpoint_snapshot_to_json(), ast_json_object_create(), ast_json_object_update(), ast_json_pack(), ast_json_timeval(), ast_json_unref(), ast_endpoint_blob::blob, NULL, ast_endpoint_blob::snapshot, stasis_message_data(), and stasis_message_timestamp().

STASIS_MESSAGE_TYPE_DEFN() [1/3]

STASIS_MESSAGE_TYPE_DEFN	(	ast_endpoint_contact_state_type	,
		.	to_ami = contactstatus_to_ami,
		.	to_json = contactstatus_to_json
	)

STASIS_MESSAGE_TYPE_DEFN() [2/3]

STASIS_MESSAGE_TYPE_DEFN

(

ast_endpoint_snapshot_type

)

STASIS_MESSAGE_TYPE_DEFN() [3/3]

STASIS_MESSAGE_TYPE_DEFN	(	ast_endpoint_state_type	,
		.	to_ami = peerstatus_to_ami,
		.	to_json = peerstatus_to_json
	)

Variable Documentation

endpoint_cache_all

struct stasis_cp_all* endpoint_cache_all

static

Definition at line 104 of file stasis_endpoints.c.

Referenced by ast_endpoint_cache(), ast_endpoint_cache_all(), ast_endpoint_stasis_init(), ast_endpoint_topic_all(), ast_endpoint_topic_all_cached(), and endpoints_stasis_cleanup().