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Modules: RM_GetClientId() implemented.

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This commit is contained in:
antirez 2016-05-03 14:32:39 +02:00
parent 9a71df505c
commit 6250a6b11f
2 changed files with 19 additions and 0 deletions
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17
src/module.c
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@ -856,6 +856,22 @@ int RM_ReplicateVerbatim(RedisModuleCtx *ctx) {
* DB and Key APIs -- Generic API
* -------------------------------------------------------------------------- */
/* Return the ID of the current client calling the currently active module
* command. The returned ID has a few guarantees:
*
* 1. The ID is different for each different client, so if the same client
* executes a module command multiple times, it can be recognized as
* having the same ID, otherwise the ID will be different.
* 2. The ID increases monotonically. Clients connecting to the server later
* are guaranteed to get IDs greater than any past ID previously seen.
*
* Valid IDs are from 1 to 2^64-1. If 0 is returned it means there is no way
* to fetch the ID in the context the function was currently called. */
unsigned long long RM_GetClientId(RedisModuleCtx *ctx) {
if (ctx->client == NULL) return 0;
return ctx->client->id;
}
/* Return the currently selected DB. */
int RM_GetSelectedDb(RedisModuleCtx *ctx) {
return ctx->client->db->id;
@ -2270,6 +2286,7 @@ void moduleRegisterCoreAPI(void) {
REGISTER_API(HashGet);
REGISTER_API(IsKeysPositionRequest);
REGISTER_API(KeyAtPos);
REGISTER_API(GetClientId);
}
/* Global initialization at Redis startup. */

2
src/redismodule.h
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@ -149,6 +149,7 @@ int REDISMODULE_API_FUNC(RedisModule_HashSet)(RedisModuleKey *key, int flags, ..
int REDISMODULE_API_FUNC(RedisModule_HashGet)(RedisModuleKey *key, int flags, ...);
int REDISMODULE_API_FUNC(RedisModule_IsKeysPositionRequest)(RedisModuleCtx *ctx);
void REDISMODULE_API_FUNC(RedisModule_KeyAtPos)(RedisModuleCtx *ctx, int pos);
unsigned long long REDISMODULE_API_FUNC(RedisModule_GetClientId)(RedisModuleCtx *ctx);
/* This is included inline inside each Redis module. */
static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int apiver) {
@ -217,6 +218,7 @@ static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int
REDISMODULE_GET_API(HashGet);
REDISMODULE_GET_API(IsKeysPositionRequest);
REDISMODULE_GET_API(KeyAtPos);
REDISMODULE_GET_API(GetClientId);
RedisModule_SetModuleAttribs(ctx,name,ver,apiver);
return REDISMODULE_OK;