Function sentinelPublishCommand

src/sentinel.cpp:4168–4175

Our fake PUBLISH command: it is actually useful only to receive hello messages * from the other sentinel instances, and publishing to a channel other than * SENTINEL_HELLO_CHANNEL is forbidden. * * Because we have a Sentinel PUBLISH, the code to send hello messages is the same * for all the three kind of instances: masters, slaves, sentinels. */

 * Because we have a Sentinel PUBLISH, the code to send hello messages is the same
 * for all the three kind of instances: masters, slaves, sentinels. */
void sentinelPublishCommand(client *c) {
    if (strcmp(szFromObj(c->argv[1]),SENTINEL_HELLO_CHANNEL)) {
        addReplyError(c, "Only HELLO messages are accepted by Sentinel instances.");
        return;
    }
    sentinelProcessHelloMessage(szFromObj(c->argv[2]),sdslen(szFromObj(c->argv[2])));
    addReplyLongLong(c,1);
}

/* ===================== SENTINEL availability checks ======================= */