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ruanhaishen
redis
Commits
19c42c90
Commit
19c42c90
authored
Mar 31, 2018
by
antirez
Browse files
Modules Timer API: add example of API.
parent
ee982f40
Changes
1
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Inline
Side-by-side
src/modules/hellotimer.c
0 → 100644
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19c42c90
/* Helloworld cluster -- A ping/pong cluster API example.
*
* -----------------------------------------------------------------------------
*
* Copyright (c) 2018, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#include "../redismodule.h"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#define MSGTYPE_PING 1
#define MSGTYPE_PONG 2
/* Timer callback. */
void
timerHandler
(
RedisModuleCtx
*
ctx
,
void
*
data
)
{
printf
(
"Fired %s!
\n
"
,
data
);
RedisModule_Free
(
data
);
}
/* HELLOTIMER.TIMER*/
int
TimerCommand_RedisCommand
(
RedisModuleCtx
*
ctx
,
RedisModuleString
**
argv
,
int
argc
)
{
REDISMODULE_NOT_USED
(
argv
);
REDISMODULE_NOT_USED
(
argc
);
for
(
int
j
=
0
;
j
<
10
;
j
++
)
{
int
delay
=
rand
()
%
5000
;
char
*
buf
=
RedisModule_Alloc
(
256
);
snprintf
(
buf
,
256
,
"After %d"
,
delay
);
RedisModuleTimerID
tid
=
RedisModule_CreateTimer
(
ctx
,
delay
,
timerHandler
,
buf
);
}
return
RedisModule_ReplyWithSimpleString
(
ctx
,
"OK"
);
}
/* This function must be present on each Redis module. It is used in order to
* register the commands into the Redis server. */
int
RedisModule_OnLoad
(
RedisModuleCtx
*
ctx
,
RedisModuleString
**
argv
,
int
argc
)
{
REDISMODULE_NOT_USED
(
argv
);
REDISMODULE_NOT_USED
(
argc
);
if
(
RedisModule_Init
(
ctx
,
"hellotimer"
,
1
,
REDISMODULE_APIVER_1
)
==
REDISMODULE_ERR
)
return
REDISMODULE_ERR
;
if
(
RedisModule_CreateCommand
(
ctx
,
"hellotimer.timer"
,
TimerCommand_RedisCommand
,
"readonly"
,
0
,
0
,
0
)
==
REDISMODULE_ERR
)
return
REDISMODULE_ERR
;
return
REDISMODULE_OK
;
}
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