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Modules: Hash type API WIP #1.

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This commit is contained in:
antirez
2016-04-25 15:39:33 +02:00
parent 5bf5fd24c6
commit 10993ca0d5
4 changed files with 212 additions and 6 deletions
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31
src/modules/helloworld.c
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@ -418,6 +418,33 @@ int HelloLexRange_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, in
return REDISMODULE_OK;
}
/* HELLO.HCOPY key srcfield dstfield
* This is just an example command that sets the hash field dstfield to the
* same value of srcfield. If srcfield does not exist no operation is
* performed.
*
* The command returns 1 if the copy is performed (srcfield exists) otherwise
* 0 is returned. */
int HelloHCopy_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 4) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_HASH &&
type != REDISMODULE_KEYTYPE_EMPTY)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
/* XXX modify me. */
RedisModule_HashSet(key,REDISMODULE_HSET_NONE,argv[2],argv[3],NULL);
RedisModule_HashSet(key,REDISMODULE_HSET_CFIELDS,"foo",argv[3],NULL);
RedisModule_ReplyWithLongLong(ctx,0);
return REDISMODULE_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) {
@ -480,5 +507,9 @@ int RedisModule_OnLoad(RedisModuleCtx *ctx) {
HelloLexRange_RedisCommand) == REDISMODULE_ERR)
return REDISMODULE_ERR;
if (RedisModule_CreateCommand(ctx,"hello.hcopy",
HelloHCopy_RedisCommand) == REDISMODULE_ERR)
return REDISMODULE_ERR;
return REDISMODULE_OK;
}