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redismq.h
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redismq.h
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/*-
* Copyright (c) 2013, Lessandro Mariano
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef REDISMQ_H
#define REDISMQ_H
#include <sys/queue.h>
#define RMQ_NONE 0
#define RMQ_BLPOP 1
#define RMQ_RPUSH 2
typedef void (rmq_callback)(char *message);
struct rmq_message {
char *message;
STAILQ_ENTRY(rmq_message) entries;
};
struct rmq_context {
// blpop or rpush
int type;
// redis config
const char *redis_host;
int redis_port;
int redis_db;
// redis key
const char *key;
// pointer to redis context
void *redis_ctx;
int connected;
// callback for blpop
rmq_callback *blpop_cb;
// message queue for rpush
STAILQ_HEAD(rmq_message_head, rmq_message) head;
};
void rmq_init(struct rmq_context *ctx, const char *redis_host, int redis_port,
int redis_db, const char *key);
void rmq_blpop(struct rmq_context *ctx, rmq_callback *blpop_cb);
void rmq_rpush(struct rmq_context *ctx, const char *message);
void rmq_rpushf(struct rmq_context *ctx, const char *format, ...);
#endif