Function RedisModuleCommandDispatcher

src/module.cpp:713–738

This Redis command binds the normal Redis command invocation with commands * exported by modules. */

/* This Redis command binds the normal Redis command invocation with commands
 * exported by modules. */
void RedisModuleCommandDispatcher(client *c) {
    RedisModuleCommandProxy *cp = (RedisModuleCommandProxy*)(unsigned long)c->cmd->getkeys_proc;
    RedisModuleCtx ctx = REDISMODULE_CTX_INIT;

    ctx.flags |= REDISMODULE_CTX_MODULE_COMMAND_CALL;
    ctx.module = cp->module;
    ctx.client = c;
    cp->func(&ctx,(void**)c->argv,c->argc);
    moduleFreeContext(&ctx);

    /* In some cases processMultibulkBuffer uses sdsMakeRoomFor to
     * expand the query buffer, and in order to avoid a big object copy
     * the query buffer SDS may be used directly as the SDS string backing
     * the client argument vectors: sometimes this will result in the SDS
     * string having unused space at the end. Later if a module takes ownership
     * of the RedisString, such space will be wasted forever. Inside the
     * Redis core this is not a problem because tryObjectEncoding() is called
     * before storing strings in the key space. Here we need to do it
     * for the module. */
    for (int i = 0; i < c->argc; i++) {
        /* Only do the work if the module took ownership of the object:
         * in that case the refcount is no longer 1. */
        if (c->argv[i]->getrefcount(std::memory_order_relaxed) > 1)
            trimStringObjectIfNeeded(c->argv[i]);
    }
}

/* This function returns the list of keys, with the same interface as the
 * 'getkeys' function of the native commands, for module commands that exported