/* Update the node address to the IP address that can be extracted
* from link->fd, and at the specified port. */
void nodeUpdateAddress(clusterNode *node, clusterLink *link, int port) {
+ /* TODO */
}
/* When this function is called, there is a packet to process starting
uint16_t type = ntohs(hdr->type);
clusterNode *sender;
- redisLog(REDIS_DEBUG,"--- packet to process %lu bytes (%lu) ---",
- (unsigned long) totlen, sdslen(link->rcvbuf));
+ redisLog(REDIS_DEBUG,"--- Processing packet of type %d, %lu bytes",
+ type, (unsigned long) totlen);
+
+ /* Perform sanity checks */
if (totlen < 8) return 1;
if (totlen > sdslen(link->rcvbuf)) return 1;
if (type == CLUSTERMSG_TYPE_PING || type == CLUSTERMSG_TYPE_PONG ||
explen += sizeof(clusterMsgDataFail);
if (totlen != explen) return 1;
}
+ if (type == CLUSTERMSG_TYPE_PUBLISH) {
+ uint32_t explen = sizeof(clusterMsg)-sizeof(union clusterMsgData);
+ explen += sizeof(clusterMsgDataPublish) +
+ ntohl(hdr->data.publish.msg.channel_len) +
+ ntohl(hdr->data.publish.msg.message_len);
+ if (totlen != explen) return 1;
+ }
+
+ /* Ready to process the packet. Dispatch by type. */
sender = clusterLookupNode(hdr->sender);
if (type == CLUSTERMSG_TYPE_PING || type == CLUSTERMSG_TYPE_MEET) {
int update_config = 0;
if (server.cluster.slots[j] == NULL ||
server.cluster.slots[j]->flags & REDIS_NODE_FAIL)
{
- clusterAddSlot(sender,j);
+ server.cluster.slots[j] = sender;
update_state = update_config = 1;
}
}
clusterUpdateState();
clusterSaveConfigOrDie();
}
+ } else if (type == CLUSTERMSG_TYPE_PUBLISH) {
+ robj *channel, *message;
+ uint32_t channel_len, message_len;
+
+ /* Don't bother creating useless objects if there are no Pub/Sub subscribers. */
+ if (dictSize(server.pubsub_channels) || listLength(server.pubsub_patterns)) {
+ channel_len = ntohl(hdr->data.publish.msg.channel_len);
+ message_len = ntohl(hdr->data.publish.msg.message_len);
+ channel = createStringObject(
+ (char*)hdr->data.publish.msg.bulk_data,channel_len);
+ message = createStringObject(
+ (char*)hdr->data.publish.msg.bulk_data+channel_len, message_len);
+ pubsubPublishMessage(channel,message);
+ decrRefCount(channel);
+ decrRefCount(message);
+ }
} else {
- redisLog(REDIS_NOTICE,"Received unknown packet type: %d", type);
+ redisLog(REDIS_WARNING,"Received unknown packet type: %d", type);
}
return 1;
}
link->sndbuf = sdscatlen(link->sndbuf, msg, msglen);
}
+/* Send a message to all the nodes with a reliable link */
+void clusterBroadcastMessage(void *buf, size_t len) {
+ dictIterator *di;
+ dictEntry *de;
+
+ di = dictGetIterator(server.cluster.nodes);
+ while((de = dictNext(di)) != NULL) {
+ clusterNode *node = dictGetEntryVal(de);
+
+ if (!node->link) continue;
+ if (node->flags & (REDIS_NODE_MYSELF|REDIS_NODE_NOADDR)) continue;
+ clusterSendMessage(node->link,buf,len);
+ }
+ dictReleaseIterator(di);
+}
+
/* Build the message header */
void clusterBuildMessageHdr(clusterMsg *hdr, int type) {
int totlen;
clusterSendMessage(link,buf,totlen);
}
-/* Send a message to all the nodes with a reliable link */
-void clusterBroadcastMessage(void *buf, size_t len) {
- dictIterator *di;
- dictEntry *de;
+/* Send a PUBLISH message.
+ *
+ * If link is NULL, then the message is broadcasted to the whole cluster. */
+void clusterSendPublish(clusterLink *link, robj *channel, robj *message) {
+ unsigned char buf[4096], *payload;
+ clusterMsg *hdr = (clusterMsg*) buf;
+ uint32_t totlen;
+ uint32_t channel_len, message_len;
- di = dictGetIterator(server.cluster.nodes);
- while((de = dictNext(di)) != NULL) {
- clusterNode *node = dictGetEntryVal(de);
+ channel = getDecodedObject(channel);
+ message = getDecodedObject(message);
+ channel_len = sdslen(channel->ptr);
+ message_len = sdslen(message->ptr);
- if (!node->link) continue;
- if (node->flags & (REDIS_NODE_MYSELF|REDIS_NODE_NOADDR)) continue;
- clusterSendMessage(node->link,buf,len);
+ clusterBuildMessageHdr(hdr,CLUSTERMSG_TYPE_PUBLISH);
+ totlen = sizeof(clusterMsg)-sizeof(union clusterMsgData);
+ totlen += sizeof(clusterMsgDataPublish) + channel_len + message_len;
+
+ hdr->data.publish.msg.channel_len = htonl(channel_len);
+ hdr->data.publish.msg.message_len = htonl(message_len);
+ hdr->totlen = htonl(totlen);
+
+ /* Try to use the local buffer if possible */
+ if (totlen < sizeof(buf)) {
+ payload = buf;
+ } else {
+ payload = zmalloc(totlen);
+ hdr = (clusterMsg*) payload;
+ memcpy(payload,hdr,sizeof(hdr));
}
- dictReleaseIterator(di);
+ memcpy(hdr->data.publish.msg.bulk_data,channel->ptr,sdslen(channel->ptr));
+ memcpy(hdr->data.publish.msg.bulk_data+sdslen(channel->ptr),
+ message->ptr,sdslen(message->ptr));
+
+ if (link)
+ clusterSendMessage(link,payload,totlen);
+ else
+ clusterBroadcastMessage(payload,totlen);
+
+ decrRefCount(channel);
+ decrRefCount(message);
+ if (payload != buf) zfree(payload);
}
/* Send a FAIL message to all the nodes we are able to contact.
clusterBroadcastMessage(buf,ntohl(hdr->totlen));
}
+/* -----------------------------------------------------------------------------
+ * CLUSTER Pub/Sub support
+ *
+ * For now we do very little, just propagating PUBLISH messages across the whole
+ * cluster. In the future we'll try to get smarter and avoiding propagating those
+ * messages to hosts without receives for a given channel.
+ * -------------------------------------------------------------------------- */
+void clusterPropagatePublish(robj *channel, robj *message) {
+ clusterSendPublish(NULL, channel, message);
+}
+
/* -----------------------------------------------------------------------------
* CLUSTER cron job
* -------------------------------------------------------------------------- */
addReplyBulk(c,o);
decrRefCount(o);
} else if ((!strcasecmp(c->argv[1]->ptr,"addslots") ||
- !strcasecmp(c->argv[1]->ptr,"delslots")) && c->argc >= 3) {
+ !strcasecmp(c->argv[1]->ptr,"delslots")) && c->argc >= 3)
+ {
+ /* CLUSTER ADDSLOTS <slot> [slot] ... */
+ /* CLUSTER DELSLOTS <slot> [slot] ... */
int j, slot;
unsigned char *slots = zmalloc(REDIS_CLUSTER_SLOTS);
int del = !strcasecmp(c->argv[1]->ptr,"delslots");
projects / redis.git / blobdiff