trex_paxos

Type Members

1. abstract class BaseDriver extends Actor with ActorLogging

   

   Driver baseclass logic forwards messages to a trex cluster switching nodes until it finds the leader.

   Driver baseclass logic forwards messages to a trex cluster switching nodes until it finds the leader. The driver coverts the application command value into a byte array ready to journal on the server.

   FIXME we retry on timeout yet we don't know if the command happened on a timeout and whether it is safe to retry we should have a map of what client messages types are known safe to retry (e.g. read-only) and only retry those.

2. case class Cluster(name: String, folder: String, retained: Int, nodes: Seq[Node]) extends Product with Serializable

   

3. class DynamicClusterDriver extends BaseDriver with ActorLogging

   

   A concrete driver which uses akka.tcp to send messages.

   A concrete driver which uses akka.tcp to send messages. FIXME Note akka documentation says that akka.tcp is not firewall friendly.

4. case class Node(nodeUniqueId: Int, host: String, clientPort: Int, nodePort: Int) extends Product with Serializable

   

   FIXME the location visible to the client may be a completely different host/interface so one host and two ports doesnt cut it.

   FIXME the location visible to the client may be a completely different host/interface so one host and two ports doesnt cut it. A node is an immutable addressable process within the cluster. If a process is moved to another location, such that its address changes, it just leave the cluster and rejoin at another address, with a new node membershipId.

   nodeUniqueId

   The unique ID in the cluster for this addressable node. If the process moves host or port a new membershipId must be assigned by having the node leave the cluster and rejoin it.

   host

   The host of the node.

   clientPort

   The client tcp port of the node.

   nodePort

   The intercluster udp port of the node.

5. trait TrexMembership extends AnyRef

   

   Cluster membership durable store.

6. trait TrexRouting extends Actor with ActorLogging

   

7. class TypedActorPaxosEndpoint extends PaxosActor

   

8. class UdpListener extends Actor with ActorLogging

   

9. class UdpSender extends Actor with ActorLogging