func NewTopologyWriter(topology *server.Topology, lc *client.LocalConnection, cm *ConnectionManager) *TopologyWriter {
return &TopologyWriter{
toWrite: topology.Clone(),
localConnection: lc,
connectionManager: cm,
finished: false,
}
}
func (cm *ConnectionManager) updateTopology(topology *server.Topology) {
if cm.topology.Equal(topology) {
return
}
rmEq := cm.topology != nil && cm.topology.AllRMs.Equal(topology.AllRMs)
// Even if no semantic change, the DBVersion/TxnId may have
// changed, so we must update our cache.
cm.topology = topology.Clone()
if rmEq {
return
}
server.Log("Topology change:", topology)
rmToServerCopy := cm.cloneRMToServer()
for _, cconn := range cm.connCountToClient {
cconn.TopologyChange(topology, rmToServerCopy)
}
}