sds clusterGenNodesDescription(void);
clusterNode *clusterLookupNode(char *name);
int clusterNodeAddSlave(clusterNode *master, clusterNode *slave);
+int clusterAddSlot(clusterNode *n, int slot);
/* -----------------------------------------------------------------------------
* Initialization
n->flags |= REDIS_NODE_HANDSHAKE;
} else if (!strcasecmp(s,"noaddr")) {
n->flags |= REDIS_NODE_NOADDR;
+ } else if (!strcasecmp(s,"noflags")) {
+ /* nothing to do */
} else {
redisPanic("Unknown flag in redis cluster config file");
}
clusterNodeAddSlave(master,n);
}
+ /* Set ping sent / pong received timestamps */
+ if (atoi(argv[4])) n->ping_sent = time(NULL);
+ if (atoi(argv[5])) n->pong_received = time(NULL);
+
/* Populate hash slots served by this instance. */
for (j = 7; j < argc; j++) {
int start, stop;
redisAssert(server.cluster.myself != NULL);
redisLog(REDIS_NOTICE,"Node configuration loaded, I'm %.40s",
server.cluster.myself->name);
+ clusterUpdateState();
return REDIS_OK;
fmterr:
sender = clusterLookupNode(hdr->sender);
if (type == CLUSTERMSG_TYPE_PING || type == CLUSTERMSG_TYPE_MEET) {
+ int update_config = 0;
redisLog(REDIS_DEBUG,"Ping packet received: %p", link->node);
/* Add this node if it is new for us and the msg type is MEET.
nodeIp2String(node->ip,link);
node->port = ntohs(hdr->port);
clusterAddNode(node);
+ update_config = 1;
}
/* Get info from the gossip section */
/* Anyway reply with a PONG */
clusterSendPing(link,CLUSTERMSG_TYPE_PONG);
+
+ /* Update config if needed */
+ if (update_config) clusterSaveConfigOrDie();
} else if (type == CLUSTERMSG_TYPE_PONG) {
- int update = 0;
+ int update_state = 0;
+ int update_config = 0;
redisLog(REDIS_DEBUG,"Pong packet received: %p", link->node);
if (link->node) {
redisLog(REDIS_DEBUG,"Handshake with node %.40s completed.",
link->node->name);
link->node->flags &= ~REDIS_NODE_HANDSHAKE;
+ update_config = 1;
} else if (memcmp(link->node->name,hdr->sender,
REDIS_CLUSTER_NAMELEN) != 0)
{
redisLog(REDIS_DEBUG,"PONG contains mismatching sender ID");
link->node->flags |= REDIS_NODE_NOADDR;
freeClusterLink(link);
+ update_config = 1;
/* FIXME: remove this node if we already have it.
*
* If we already have it but the IP is different, use
server.cluster.slots[j]->flags & REDIS_NODE_FAIL)
{
server.cluster.slots[j] = sender;
- update = 1;
+ update_state = update_config = 1;
}
}
}
clusterProcessGossipSection(hdr,link);
/* Update the cluster state if needed */
- if (update) {
- clusterUpdateState();
- clusterSaveConfigOrDie();
- }
+ if (update_state) clusterUpdateState();
+ if (update_config) clusterSaveConfigOrDie();
} else if (type == CLUSTERMSG_TYPE_FAIL && sender) {
clusterNode *failing;
failing = clusterLookupNode(hdr->data.fail.about.nodename);
- if (failing && !(failing->flags & REDIS_NODE_FAIL)) {
+ if (failing && !(failing->flags & (REDIS_NODE_FAIL|REDIS_NODE_MYSELF)))
+ {
redisLog(REDIS_NOTICE,
"FAIL message received from %.40s about %.40s",
hdr->sender, hdr->data.fail.about.nodename);
* normal PING packets. */
node->flags &= ~REDIS_NODE_MEET;
- redisLog(REDIS_NOTICE,"Connecting with Node %.40s at %s:%d\n", node->name, node->ip, node->port+REDIS_CLUSTER_PORT_INCR);
+ redisLog(REDIS_NOTICE,"Connecting with Node %.40s at %s:%d", node->name, node->ip, node->port+REDIS_CLUSTER_PORT_INCR);
}
}
dictReleaseIterator(di);
int delay;
if (node->flags &
- (REDIS_NODE_MYSELF|REDIS_NODE_NOADDR|REDIS_NODE_HANDSHAKE|
- REDIS_NODE_FAIL)) continue;
+ (REDIS_NODE_MYSELF|REDIS_NODE_NOADDR|REDIS_NODE_HANDSHAKE))
+ continue;
/* Check only if we already sent a ping and did not received
* a reply yet. */
if (node->ping_sent == 0 ||
node->ping_sent <= node->pong_received) continue;
delay = time(NULL) - node->pong_received;
- if (node->flags & REDIS_NODE_PFAIL) {
+ if (delay < server.cluster.node_timeout) {
/* The PFAIL condition can be reversed without external
* help if it is not transitive (that is, if it does not
- * turn into a FAIL state). */
- if (delay < server.cluster.node_timeout)
+ * turn into a FAIL state).
+ *
+ * The FAIL condition is also reversible if there are no slaves
+ * for this host, so no slave election should be in progress.
+ *
+ * TODO: consider all the implications of resurrecting a
+ * FAIL node. */
+ if (node->flags & REDIS_NODE_PFAIL) {
node->flags &= ~REDIS_NODE_PFAIL;
+ } else if (node->flags & REDIS_NODE_FAIL && !node->numslaves) {
+ node->flags &= ~REDIS_NODE_FAIL;
+ clusterUpdateState();
+ }
} else {
- if (delay >= server.cluster.node_timeout) {
+ /* Timeout reached. Set the noad se possibly failing if it is
+ * not already in this state. */
+ if (!(node->flags & (REDIS_NODE_PFAIL|REDIS_NODE_FAIL))) {
redisLog(REDIS_DEBUG,"*** NODE %.40s possibly failing",
node->name);
node->flags |= REDIS_NODE_PFAIL;
* an error and REDIS_ERR is returned. */
int clusterAddSlot(clusterNode *n, int slot) {
redisAssert(clusterNodeSetSlotBit(n,slot) == 0);
- server.cluster.slots[slot] = server.cluster.myself;
+ server.cluster.slots[slot] = n;
printf("SLOT %d added to %.40s\n", slot, n->name);
return REDIS_OK;
}
start = -1;
}
}
+ ci = sdscatlen(ci,"\n",1);
}
- ci = sdscatlen(ci,"\n",1);
dictReleaseIterator(di);
return ci;
}
"cluster_slots_ok:%d\r\n"
"cluster_slots_pfail:%d\r\n"
"cluster_slots_fail:%d\r\n"
+ "cluster_known_nodes:%lu\r\n"
, statestr[server.cluster.state],
slots_assigned,
slots_ok,
slots_pfail,
- slots_fail
+ slots_fail,
+ dictSize(server.cluster.nodes)
);
addReplySds(c,sdscatprintf(sdsempty(),"$%lu\r\n",
(unsigned long)sdslen(info)));
projects / redis.git / blobdiff