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Sentinel: SENTINEL MONITOR command implemented.

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It allows to add new masters to monitor at runtime.
This commit is contained in:
antirez 2014-01-10 15:16:55 +01:00
parent 774f0bd45e
commit 39f9f449b0
1 changed files with 34 additions and 0 deletions
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34
src/sentinel.c
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@ -2486,6 +2486,40 @@ void sentinelCommand(redisClient *c) {
if (c->argc != 2) goto numargserr;
sentinelPendingScriptsCommand(c);
} else if (!strcasecmp(c->argv[1]->ptr,"monitor")) {
/* SENTINEL MONITOR <name> <ip> <port> <quorum> */
long quorum, port;
char buf[32];
if (c->argc != 6) goto numargserr;
if (getLongFromObjectOrReply(c,c->argv[5],&quorum,"Invalid quorum")
!= REDIS_OK) return;
if (getLongFromObjectOrReply(c,c->argv[4],&port,"Invalid port")
!= REDIS_OK) return;
/* Make sure the IP field is actually a valid IP before passing it
* to createSentinelRedisInstance(), otherwise we may trigger a
* DNS lookup at runtime. */
if (anetResolveIP(NULL,c->argv[3]->ptr,buf,sizeof(buf)) == ANET_ERR) {
addReplyError(c,"Invalid IP address specified");
return;
}
if (createSentinelRedisInstance(c->argv[2]->ptr,SRI_MASTER,
c->argv[3]->ptr,port,quorum,NULL) == NULL)
{
switch(errno) {
case EBUSY:
addReplyError(c,"Duplicated master name");
break;
case EINVAL:
addReplyError(c,"Invalid port number");
break;
default:
addReplyError(c,"Unspecified error adding the instance");
break;
}
} else {
addReply(c,shared.ok);
}
} else {
addReplyErrorFormat(c,"Unknown sentinel subcommand '%s'",
(char*)c->argv[1]->ptr);