Function moduleCommand

app/redis-6.2.6/src/module.c:8754–8816

Redis MODULE command. * * MODULE LIST * MODULE LOAD [args...] * MODULE UNLOAD */

 * MODULE UNLOAD <name>
 */
void moduleCommand(client *c) {
    char *subcmd = c->argv[1]->ptr;

    if (c->argc == 2 && !strcasecmp(subcmd,"help")) {
        const char *help[] = {
"LIST",
"    Return a list of loaded modules.",
"LOAD <path> [<arg> ...]",
"    Load a module library from <path>, passing to it any optional arguments.",
"UNLOAD <name>",
"    Unload a module.",
NULL
        };
        addReplyHelp(c, help);
    } else
    if (!strcasecmp(subcmd,"load") && c->argc >= 3) {
        robj **argv = NULL;
        int argc = 0;

        if (c->argc > 3) {
            argc = c->argc - 3;
            argv = &c->argv[3];
        }

        if (moduleLoad(c->argv[2]->ptr,(void **)argv,argc) == C_OK)
            addReply(c,shared.ok);
        else
            addReplyError(c,
                "Error loading the extension. Please check the server logs.");
    } else if (!strcasecmp(subcmd,"unload") && c->argc == 3) {
        if (moduleUnload(c->argv[2]->ptr) == C_OK)
            addReply(c,shared.ok);
        else {
            char *errmsg;
            switch(errno) {
            case ENOENT:
                errmsg = "no such module with that name";
                break;
            case EBUSY:
                errmsg = "the module exports one or more module-side data "
                         "types, can't unload";
                break;
            case EPERM:
                errmsg = "the module exports APIs used by other modules. "
                         "Please unload them first and try again";
                break;
            case EAGAIN:
                errmsg = "the module has blocked clients. "
                         "Please wait them unblocked and try again";
                break;
            default:
                errmsg = "operation not possible.";
                break;
            }
            addReplyErrorFormat(c,"Error unloading module: %s",errmsg);
        }
    } else if (!strcasecmp(subcmd,"list") && c->argc == 2) {
        addReplyLoadedModules(c);