net.logstash.logback.appender.destination

Class DelegateDestinationConnectionStrategy

java.lang.Object

ch.qos.logback.core.spi.ContextAwareBase

net.logstash.logback.appender.destination.DelegateDestinationConnectionStrategy

All Implemented Interfaces:

ContextAware, LifeCycle, DestinationConnectionStrategy

public class DelegateDestinationConnectionStrategy
extends ContextAwareBase
implements DestinationConnectionStrategy, LifeCycle

A convenience class to make setting a DestinationConnectionStrategy cleaner in logback's xml configuration when using the strategies provided by logstash-logback-encoder.

For example, instead of: <appender name="tcp" class="net.logstash.logback.appender.LogstashTcpSocketAppender"> <connectionStrategy class="net.logstash.logback.appender.destination.RoundRobinDestinationConnectionStrategy"> <connectionTTL>10 minutes</connectionTTL> </connectionStrategy> you can use: <appender name="tcp" class="net.logstash.logback.appender.LogstashTcpSocketAppender"> <connectionStrategy> <roundRobin> <connectionTTL>10 minutes</connectionTTL> </roundRobin> </connectionStrategy>

Field Summary

Fields inherited from class ch.qos.logback.core.spi.ContextAwareBase

context

Constructor Summary

Constructors

Constructor and Description
DelegateDestinationConnectionStrategy()

Method Summary

Modifier and Type	Method and Description
void	connectFailed(long connectionStartTimeInMillis, int failedDestinationIndex, int numDestinations) Called when a connection fails to the given failedDestinationIndex.
void	connectSuccess(long connectionStartTimeInMillis, int connectedDestinationIndex, int numDestinations) Called when a connection was successful to the given connectedDestinationIndex.
boolean	isStarted()
int	selectNextDestinationIndex(int previousDestinationIndex, int numDestinations) Returns the index of the destination to which to connect next.
void	setPreferPrimary(PreferPrimaryDestinationConnectionStrategy strategy)
void	setRandom(RandomDestinationConnectionStrategy strategy)
void	setRoundRobin(RoundRobinDestinationConnectionStrategy strategy)
boolean	shouldReconnect(long currentTimeInMillis, int currentDestinationIndex, int numDestinations) Returns whether the connection should be reestablished.
void	start()
void	stop()

Methods inherited from class ch.qos.logback.core.spi.ContextAwareBase

addError, addError, addInfo, addInfo, addStatus, addWarn, addWarn, getContext, getDeclaredOrigin, getStatusManager, setContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DelegateDestinationConnectionStrategy

public DelegateDestinationConnectionStrategy()

Method Detail

selectNextDestinationIndex

public int selectNextDestinationIndex(int previousDestinationIndex,
                                      int numDestinations)

Description copied from interface: DestinationConnectionStrategy

Returns the index of the destination to which to connect next.

Specified by:

selectNextDestinationIndex in interface DestinationConnectionStrategy

Parameters:

previousDestinationIndex - The previous destination index to which a connection was attempted (either success or failure)

numDestinations - The total number of destinations available.

Returns:

the index of the destination to which to connect next.

connectSuccess

public void connectSuccess(long connectionStartTimeInMillis,
                           int connectedDestinationIndex,
                           int numDestinations)

Description copied from interface: DestinationConnectionStrategy

Called when a connection was successful to the given connectedDestinationIndex.

Specified by:

connectSuccess in interface DestinationConnectionStrategy

Parameters:

connectionStartTimeInMillis - The time in millis at which the connection was initiated (not completed).

connectedDestinationIndex - The index of the destination which was successfully connected.

numDestinations - The total number of destinations available.

connectFailed

public void connectFailed(long connectionStartTimeInMillis,
                          int failedDestinationIndex,
                          int numDestinations)

Description copied from interface: DestinationConnectionStrategy

Called when a connection fails to the given failedDestinationIndex.

Specified by:

connectFailed in interface DestinationConnectionStrategy

Parameters:

connectionStartTimeInMillis - The time in millis at which the connection was initiated (not completed).

failedDestinationIndex - The index of the destination which failed to connect.

numDestinations - The total number of destinations available.

shouldReconnect

public boolean shouldReconnect(long currentTimeInMillis,
                               int currentDestinationIndex,
                               int numDestinations)

Description copied from interface: DestinationConnectionStrategy

Returns whether the connection should be reestablished.

Specified by:

shouldReconnect in interface DestinationConnectionStrategy

Parameters:

currentTimeInMillis - The time in millis for which to reevaluate whether the connection should be reestablished.

currentDestinationIndex - The index of the destination which is currently connected

numDestinations - The total number of destinations available.

Returns:

true if the connection should be reestablished (to the destination returned by the next call to DestinationConnectionStrategy.selectNextDestinationIndex(int, int), false otherwise.

start

public void start()

Specified by:

start in interface LifeCycle

stop

public void stop()

Specified by:

stop in interface LifeCycle

isStarted

public boolean isStarted()

Specified by:

isStarted in interface LifeCycle

setPreferPrimary

public void setPreferPrimary(PreferPrimaryDestinationConnectionStrategy strategy)

setRandom

public void setRandom(RandomDestinationConnectionStrategy strategy)

setRoundRobin

public void setRoundRobin(RoundRobinDestinationConnectionStrategy strategy)