THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
| PlantUML |
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title This diagram shows a member (N) using a locator (L) discovering the Coordinator (C) and joining
entity N
entity L
entity C
N -> L : FindCoordinator(myId)
note right : via tcp/ip
L -> N : FindCoordinatorResponse(c)
N -> C : JoinRequest
note right : this and subsequent communications via UDP
C -> N : PrepareView(c,l,n)
note right of C : ViewCreator thread processes request
N -> C : ack
C -> L : PrepareView(c,l,n)
L -> C : ack
C -> N : InstallView(c,l,n)
N -> C : ack
note right of N
continue startup after
sending ack
end note
C -> L : InstallView(c,l,n)
L -> C : ack |
| PlantUML |
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title This shows a member (M) leaving and another member (P) joining in the same view entity M entity C entity P M -> C : LeaveRequest C -> M : LeaveResponse note right of C : LeaveRequest is queued M -> M : done P -> C : JoinRequest note right of C JoinRequest is queued. View Creator wakes up and creates view {C,P} removing M end note C -> P : Prepare {C,P} P -> C : ack C -> P : Install {C,P} P -> C : ack note right of P: P processes view and completes Join |
| PlantUML |
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title This diagram shows two Locators starting up at the same time with no other members present. entity L1 entity L2 L1 -> L2 : FindCoordinator note right of L1: via tcp/ip L2 -> L1 : FindCoordinatorResponse(registrants={L2,L1}) note right of L2 both members get {L1,L2} registrants and choose L1 as coordinator due to ID sort order end note L2 -> L1 : FindCoordinator L1 -> L2 : FindCoordinatorResponse(registrants={L1,L2}) note right of L2 : subsequent messaging is via UDP L2 -> L1 : JoinRequest L1 -> L1 : becomeCoordinator note right of L1 : L1 ViewCreator thread processes request L1 -> L2 : PrepareView(L1,L2) L2 -> L1 : ack L1 -> L2 : InstallView(L1,L2) L2 -> L1 : ack note right of L1 : L1 and L2 continue startup |