Function clusterManagerGetConfigSignature

app/redis-6.2.6/src/redis-cli.c:4354–4445

}

static sds clusterManagerGetConfigSignature(clusterManagerNode *node) {
    sds signature = NULL;
    int node_count = 0, i = 0, name_len = 0;
    char **node_configs = NULL;
    redisReply *reply = CLUSTER_MANAGER_COMMAND(node, "CLUSTER NODES");
    if (reply == NULL || reply->type == REDIS_REPLY_ERROR)
        goto cleanup;
    char *lines = reply->str, *p, *line;
    while ((p = strstr(lines, "\n")) != NULL) {
        i = 0;
        *p = '\0';
        line = lines;
        lines = p + 1;
        char *nodename = NULL;
        int tot_size = 0;
        while ((p = strchr(line, ' ')) != NULL) {
            *p = '\0';
            char *token = line;
            line = p + 1;
            if (i == 0) {
                nodename = token;
                tot_size = (p - token);
                name_len = tot_size++; // Make room for ':' in tot_size
            }
            if (++i == 8) break;
        }
        if (i != 8) continue;
        if (nodename == NULL) continue;
        int remaining = strlen(line);
        if (remaining == 0) continue;
        char **slots = NULL;
        int c = 0;
        while (remaining > 0) {
            p = strchr(line, ' ');
            if (p == NULL) p = line + remaining;
            int size = (p - line);
            remaining -= size;
            tot_size += size;
            char *slotsdef = line;
            *p = '\0';
            if (remaining) {
                line = p + 1;
                remaining--;
            } else line = p;
            if (slotsdef[0] != '[') {
                c++;
                slots = zrealloc(slots, (c * sizeof(char *)));
                slots[c - 1] = slotsdef;
            }
        }
        if (c > 0) {
            if (c > 1)
                qsort(slots, c, sizeof(char *), clusterManagerSlotCompare);
            node_count++;
            node_configs =
                zrealloc(node_configs, (node_count * sizeof(char *)));
            /* Make room for '|' separators. */
            tot_size += (sizeof(char) * (c - 1));