Tutorial on Fault Tolerant CORBA

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Passive ReplicationClientinvokes a method ofServer AEternalEternalPrimaryreplicaServer AObject ObjectObject Object ObjectOnly primary replicaof Server Aexecutes the methodEternal Eternal EternalReliable totally ordered multicastServer BObject Object ObjectEternal Eternal EternalPrimaryreplicaOnly primary replicaof Server Bexecutes the methodReliabletotally orderedmulticastfor state transferReply returnedfrom primary replica of Server Bto primary replica of Server A<strong>Tutorial</strong> on Fault Tolerant CORBA © Eternal Systems, Inc, 2000
Membership Style• Infrastructure-Controlled– Fault Tolerance Infrastructure creates multiplereplicas of an object (members of an object group)and allocates them to appropriate hosts• Application-Controlled– The application determines when and how manyreplicas to create and the hosts on which theyshould be created<strong>Tutorial</strong> on Fault Tolerant CORBA © Eternal Systems, Inc, 2000
Page 2 and 3: Tutorial onFault T
Page 4 and 5: Outline1. Introduction to Fault Tol
Page 6 and 7: Objectives of FT CORBA• Wide rang
Page 8 and 9: Types of Faults• Processor faults
Page 10 and 11: Object Groups• Replicas of an obj
Page 12 and 13: Replication Styles• Passive Repli
Page 14 and 15: Fault Tolerance for the Client• F
Page 16 and 17: Fault Tolerance Domains• Aid appl
Page 18 and 19: Outlineâ2. Fault Tolerance Mechani
Page 20 and 21: Interoperable Object Group Referenc
Page 22 and 23: Access via IIOPDirectly to PrimaryI
Page 24 and 25: Access via IIOP and a GatewayIntero
Page 26 and 27: Most Recent Object Group Reference
Page 28 and 29: Outlineâ2. Fault Tolerance Mechani
Page 30 and 31: Transparent Reinvocation• Problem
Page 32 and 33: Transport HeartbeatsClient Side•
Page 34 and 35: Replication Style• Stateless- Rea
Page 38 and 39: Infrastructure-ControlledMembership
Page 40 and 41: Application-ControlledMembership St
Page 42 and 43: Strong Replica Consistency• Maint
Page 44 and 45: Factories• Sequence of FactoryInf
Page 46 and 47: Replication Management• Replicati
Page 48 and 49: Property Manager• Fault tolerance
Page 50 and 51: Property Manager Interfacevoid set_
Page 52 and 53: Generic Factory Interface• Inheri
Page 54 and 55: create_object()Generic FactoryRepli
Page 56 and 57: Object Group Manager InterfaceObjec
Page 58 and 59: Outline4. Fault Tolerance Managemen
Page 60 and 61: Fault Detection & NotificationRepli
Page 62 and 63: Fault Event Suppliers & Consumers
Page 64 and 65: Fault Notifier Interfacevoid push_s
Page 66 and 67: Outline4. Fault Tolerance Managemen
Page 68 and 69: Logging & RecoveryManagementLogging
Page 70 and 71: • get_state()• set_state()Check
Page 72 and 73: Logging & RecoveryManagementRecover
Page 74 and 75: Pool of Processors• Multiple repl
Page 76 and 77: Internet Server• Use pool of proc
Page 78 and 79: Internet Server• Must also provid
Page 80 and 81: Simple Switching Application• Lin
Page 82 and 83: Larger Switching ApplicationSwitchc
Page 84 and 85: Outline6. Fault-Tolerant Hello Serv
Page 86 and 87:
Hello Server Launcher1. Initialize
Page 88 and 89:
Hello Server Launcher Main// Set ty
Page 90 and 91:
Hello Server LauncherHelloServerLau
Page 92 and 93:
Hello Server LauncherHelloServerLau
Page 94 and 95:
Hello Server Factory1. Invoked by F
Page 96 and 97:
Hello Server Factory Implementation
Page 98 and 99:
Hello Server FactoryHelloServerLaun
Page 100 and 101:
Hello Server Factory Main1. Initial
Page 102 and 103:
Hello Server Factory Mainif (!CORBA
Page 104 and 105:
Hello Server ImplementationThe impl
Page 106 and 107:
Hello Client Main1. Initialize the
Page 108 and 109:
Hello Client Main// Obtain the Hell
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Tutorial on Fault Tolerant CORBA

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