Module experimental cluster api

[MeirShpilraien]

Hey,

As I see the experimental api expose the following function to retrieve information on the cluster:

int REDISMODULE_API_FUNC(RedisModule_GetClusterNodeInfo)(RedisModuleCtx *ctx, const char *id, char *ip, char *master_id, int *port, int *flags);
char **REDISMODULE_API_FUNC(RedisModule_GetClusterNodesList)(RedisModuleCtx *ctx, size_t *numnodes);

I did not see any possibility to get the slot range for a given node, is it possible to add it to RedisModule_GetClusterNodeInfo ?

[MeirShpilraien]

In addition I saw that its not possible to use RedisModule_SendClusterMessage on the current node, its kind of forcing the module writer to distinguish between the scenario on which I am sending to myself and the scenario on which I am sending the another server. In case I am sending to myself I will need to call directly to receive function and in such case it will be called on the same stack. I think the better approach here is to allow calling yourself using RedisModule_SendClusterMessage, what do you think?

[gkorland]

@antirez it seems like a very important functionally to allow users develop distributed cluster aware modules