Class SimpleCoordinator
- java.lang.Object
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- org.apache.catalina.tribes.group.ChannelInterceptorBase
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- org.apache.catalina.tribes.group.interceptors.SimpleCoordinator
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- All Implemented Interfaces:
ChannelInterceptor,Heartbeat,MembershipListener
public class SimpleCoordinator extends ChannelInterceptorBase
A dinky coordinator, just uses a sorted version of the member array.- Author:
- rnewson
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.apache.catalina.tribes.ChannelInterceptor
ChannelInterceptor.InterceptorEvent
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Field Summary
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Fields inherited from class org.apache.catalina.tribes.group.ChannelInterceptorBase
optionFlag
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Constructor Summary
Constructors Constructor Description SimpleCoordinator()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description MembergetCoordinator()Member[]getView()booleanisCoordinator()voidmemberAdded(Member member)A member was added to the groupvoidmemberDisappeared(Member member)A member was removed from the group
If the member left voluntarily, the Member.getCommand will contain the Member.SHUTDOWN_PAYLOAD datavoidstart(int svc)Starts up the channel.voidstop(int svc)Shuts down the channel.protected voidviewChange(Member[] view)Override to receive view changes.-
Methods inherited from class org.apache.catalina.tribes.group.ChannelInterceptorBase
fireInterceptorEvent, getChannel, getLocalMember, getMember, getMembers, getNext, getOptionFlag, getPrevious, hasMembers, heartbeat, messageReceived, okToProcess, sendMessage, setChannel, setNext, setOptionFlag, setPrevious
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Method Detail
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memberAdded
public void memberAdded(Member member)
Description copied from interface:MembershipListenerA member was added to the group- Specified by:
memberAddedin interfaceMembershipListener- Overrides:
memberAddedin classChannelInterceptorBase- Parameters:
member- Member - the member that was added
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memberDisappeared
public void memberDisappeared(Member member)
Description copied from interface:MembershipListenerA member was removed from the group
If the member left voluntarily, the Member.getCommand will contain the Member.SHUTDOWN_PAYLOAD data- Specified by:
memberDisappearedin interfaceMembershipListener- Overrides:
memberDisappearedin classChannelInterceptorBase- Parameters:
member- Member- See Also:
Member.SHUTDOWN_PAYLOAD
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viewChange
protected void viewChange(Member[] view)
Override to receive view changes.- Parameters:
view- The members array
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start
public void start(int svc) throws ChannelExceptionDescription copied from class:ChannelInterceptorBaseStarts up the channel. This can be called multiple times for individual services to start The svc parameter can be the logical or value of any constants- Specified by:
startin interfaceChannelInterceptor- Overrides:
startin classChannelInterceptorBase- Parameters:
svc- int value of
DEFAULT - will start all services
MBR_RX_SEQ - starts the membership receiver
MBR_TX_SEQ - starts the membership broadcaster
SND_TX_SEQ - starts the replication transmitter
SND_RX_SEQ - starts the replication receiver- Throws:
ChannelException- if a startup error occurs or the service is already started.- See Also:
Channel
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stop
public void stop(int svc) throws ChannelExceptionDescription copied from class:ChannelInterceptorBaseShuts down the channel. This can be called multiple times for individual services to shutdown The svc parameter can be the logical or value of any constants- Specified by:
stopin interfaceChannelInterceptor- Overrides:
stopin classChannelInterceptorBase- Parameters:
svc- int value of
DEFAULT - will shutdown all services
MBR_RX_SEQ - stops the membership receiver
MBR_TX_SEQ - stops the membership broadcaster
SND_TX_SEQ - stops the replication transmitter
SND_RX_SEQ - stops the replication receiver- Throws:
ChannelException- if a startup error occurs or the service is already started.- See Also:
Channel
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getView
public Member[] getView()
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getCoordinator
public Member getCoordinator()
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isCoordinator
public boolean isCoordinator()
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