nvmsgbroker.h File Reference

Go to the source code of this file.

Data Structures
struct	NvMsgBrokerClientMsg

Macros
#define	NV_MSGBROKER_VERSION   "2.0"
#define	LOG_CAT   "DSLOG:NV_MSGBROKER"

Typedefs
typedef void *	NvMsgBrokerClientHandle
typedef void(*	nv_msgbroker_connect_cb_t )(NvMsgBrokerClientHandle h_ptr, NvMsgBrokerErrorType status)
	Connect callback method registered during connect. More...
typedef void(*	nv_msgbroker_send_cb_t )(void *user_ptr, NvMsgBrokerErrorType status)
	Send callback method registered during send_async. More...
typedef void(*	nv_msgbroker_subscribe_cb_t )(NvMsgBrokerErrorType status, void *msg, int msglen, char *topic, void *user_ptr)
	subscribe callback method registered during subscribe More...

Enumerations
enum	NvMsgBrokerErrorType {   NV_MSGBROKER_API_OK,   NV_MSGBROKER_API_ERR,   NV_MSGBROKER_API_RECONNECTING,   NV_MSGBROKER_API_NOT_SUPPORTED }

Functions
NvMsgBrokerClientHandle	nv_msgbroker_connect (char *broker_conn_str, char *broker_proto_lib, nv_msgbroker_connect_cb_t connect_cb, char *cfg)
	Connect to a remote entity by calling into msgbroker library. More...
NvMsgBrokerErrorType	nv_msgbroker_send_async (NvMsgBrokerClientHandle h_ptr, NvMsgBrokerClientMsg message, nv_msgbroker_send_cb_t cb, void *user_ctx)
NvMsgBrokerErrorType	nv_msgbroker_subscribe (NvMsgBrokerClientHandle h_ptr, char **topics, int num_topics, nv_msgbroker_subscribe_cb_t cb, void *user_ctx)
	Subscribe to a remote entity for receiving messages on particular topic(s) More...
NvMsgBrokerErrorType	nv_msgbroker_disconnect (NvMsgBrokerClientHandle h_ptr)
char *	nv_msgbroker_version (void)

Macro Definition Documentation

#define LOG_CAT   "DSLOG:NV_MSGBROKER"

Definition at line 27 of file nvmsgbroker.h.

#define NV_MSGBROKER_VERSION   "2.0"

Definition at line 26 of file nvmsgbroker.h.

Typedef Documentation

typedef void(* nv_msgbroker_connect_cb_t)(NvMsgBrokerClientHandle h_ptr, NvMsgBrokerErrorType status)

Connect callback method registered during connect.

Parameters

[in]	h_ptr	Msgbroker Connection handle
[in]	status	Connection status

Definition at line 59 of file nvmsgbroker.h.

typedef void(* nv_msgbroker_send_cb_t)(void *user_ptr, NvMsgBrokerErrorType status)

Send callback method registered during send_async.

Parameters

[in]	user_ptr	Pointer passed during send_async for context
[in]	status	Completion status of send operation

Definition at line 65 of file nvmsgbroker.h.

typedef void(* nv_msgbroker_subscribe_cb_t)(NvMsgBrokerErrorType status, void *msg, int msglen, char *topic, void *user_ptr)

subscribe callback method registered during subscribe

Parameters

[in]	status	Completion status of send operation
[in]	msg	Consumer Message. Should be copied before function return
[in]	msglen	Length of message consumed
[in]	topic	Subscribed Topic where message is received
[in]	user_ptr	Pointer passed during send_async for context

Definition at line 75 of file nvmsgbroker.h.

typedef void* NvMsgBrokerClientHandle

Definition at line 51 of file nvmsgbroker.h.

Enumeration Type Documentation

enum NvMsgBrokerErrorType

Enumerator
NV_MSGBROKER_API_OK
NV_MSGBROKER_API_ERR
NV_MSGBROKER_API_RECONNECTING
NV_MSGBROKER_API_NOT_SUPPORTED

Definition at line 31 of file nvmsgbroker.h.

Function Documentation

NvMsgBrokerClientHandle nv_msgbroker_connect	(	char *	broker_conn_str,
		char *	broker_proto_lib,
		nv_msgbroker_connect_cb_t	connect_cb,
		char *	cfg
	)

Connect to a remote entity by calling into msgbroker library.

Parameters

[in]	broker_conn_str	A connection string (optional) with format
[in]	broker_proto_lib	Full Path to Message protocol adapter library
[in]	connect_cb	A pointer to a callback function for events associated with the connection.
[in]	cfg	Pathname of a configuration file passed to be passed to the message protocol adapter

Returns

A connection handle.

NvMsgBrokerErrorType nv_msgbroker_disconnect

(

NvMsgBrokerClientHandle

h_ptr

)

NvMsgBrokerErrorType nv_msgbroker_send_async	(	NvMsgBrokerClientHandle	h_ptr,
		NvMsgBrokerClientMsg	message,
		nv_msgbroker_send_cb_t	cb,
		void *	user_ctx
	)

NvMsgBrokerErrorType nv_msgbroker_subscribe	(	NvMsgBrokerClientHandle	h_ptr,
		char **	topics,
		int	num_topics,
		nv_msgbroker_subscribe_cb_t	cb,
		void *	user_ctx
	)

Subscribe to a remote entity for receiving messages on particular topic(s)

Parameters

[in]	h_ptr	Connection handle
[in]	topics	pointer to array of topics (cannot be NULL)
[in]	num_topics	number of topics
[in]	cb	A pointer to a callback function to forward consumed message
[in]	user_ctx	user ptr to be passed to callback for context

Returns

Completion status of send operation

char* nv_msgbroker_version

(

void

)