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Cluster: slave nodes advertise master slots bitmap and configEpoch.

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This commit is contained in:
antirez 2013-10-07 11:30:58 +02:00
parent 1461422ce6
commit 72f38cd70f
1 changed files with 13 additions and 8 deletions
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21
src/cluster.c
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@ -1339,12 +1339,21 @@ void clusterBroadcastMessage(void *buf, size_t len) {
/* Build the message header */
void clusterBuildMessageHdr(clusterMsg *hdr, int type) {
int totlen = 0;
clusterNode *master;
/* If this node is a master, we send its slots bitmap and configEpoch.
* If this node is a slave we send the master's information instead (the
* node is flagged as slave so the receiver knows that it is NOT really
* in charge for this slots. */
master = (server.cluster->myself->flags & REDIS_NODE_SLAVE &&
server.cluster->myself->slaveof) ?
server.cluster->myself->slaveof : server.cluster->myself;
memset(hdr,0,sizeof(*hdr));
hdr->type = htons(type);
memcpy(hdr->sender,server.cluster->myself->name,REDIS_CLUSTER_NAMELEN);
memcpy(hdr->myslots,server.cluster->myself->slots,
sizeof(hdr->myslots));
memcpy(hdr->myslots,master->slots,sizeof(hdr->myslots));
memset(hdr->slaveof,0,REDIS_CLUSTER_NAMELEN);
if (server.cluster->myself->slaveof != NULL) {
memcpy(hdr->slaveof,server.cluster->myself->slaveof->name,
@ -1354,13 +1363,9 @@ void clusterBuildMessageHdr(clusterMsg *hdr, int type) {
hdr->flags = htons(server.cluster->myself->flags);
hdr->state = server.cluster->state;
/* Set the currentEpoch and configEpochs. Note that configEpoch is
* set to the master configEpoch if this node is a slave. */
/* Set the currentEpoch and configEpochs. */
hdr->currentEpoch = htonu64(server.cluster->currentEpoch);
if (server.cluster->myself->flags & REDIS_NODE_SLAVE)
hdr->configEpoch = htonu64(server.cluster->myself->slaveof->configEpoch);
else
hdr->configEpoch = htonu64(server.cluster->myself->configEpoch);
hdr->configEpoch = htonu64(master->configEpoch);
if (type == CLUSTERMSG_TYPE_FAIL) {
totlen = sizeof(clusterMsg)-sizeof(union clusterMsgData);