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Modules: expire API and documentation.

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This commit is contained in:
antirez
2016-04-11 17:12:11 +02:00
parent f4e0129fa9
commit 11b3df24cb
4 changed files with 101 additions and 0 deletions
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27
src/modules/helloworld.c
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@ -303,6 +303,29 @@ int HelloToggleCase_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv,
return REDISMODULE_OK;
}
/* HELLO.MORE.EXPIRE key milliseconds.
*
* If they key has already an associated TTL, extends it by "milliseconds"
* milliseconds. Otherwise no operation is performed. */
int HelloMoreExpire_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 3) return RedisModule_WrongArity(ctx);
mstime_t addms, expire;
if (RedisModule_StringToLongLong(argv[2],&addms) != REDISMODULE_OK)
return RedisModule_ReplyWithError(ctx,"ERR invalid expire time");
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
expire = RedisModule_GetExpire(key);
if (expire != REDISMODULE_NO_EXPIRE) {
expire += addms;
RedisModule_SetExpire(key,expire);
}
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) {
@ -353,5 +376,9 @@ int RedisModule_OnLoad(RedisModuleCtx *ctx) {
HelloToggleCase_RedisCommand) == REDISMODULE_ERR)
return REDISMODULE_ERR;
if (RedisModule_CreateCommand(ctx,"hello.more.expire",
HelloMoreExpire_RedisCommand) == REDISMODULE_ERR)
return REDISMODULE_ERR;
return REDISMODULE_OK;
}