software.amazon.jdbc.plugin.efm.v1

Class HostMonitorConnectionContextV1

java.lang.Object

software.amazon.jdbc.plugin.efm.base.HostMonitorConnectionContext

software.amazon.jdbc.plugin.efm.v1.HostMonitorConnectionContextV1

All Implemented Interfaces:

ConnectionContext

public class HostMonitorConnectionContextV1
extends HostMonitorConnectionContext

Monitoring context for each connection. This contains each connection's criteria for whether a server should be considered unhealthy. The context is shared between the main thread and the monitor thread.

Field Summary

Fields inherited from class software.amazon.jdbc.plugin.efm.base.HostMonitorConnectionContext

connectionToAbortRef, nodeUnhealthy

Constructor Summary

Constructors

Constructor and Description
HostMonitorConnectionContextV1()

Method Summary

Modifier and Type	Method and Description
void	abortConnection()
long	getExpectedActiveMonitoringStartTimeNano()
long	getFailureCount()
long	getFailureDetectionCount()
long	getFailureDetectionIntervalMillis()
ResourceLock	getLock()
void	init(java.sql.Connection connectionToAbort, long failureDetectionTimeMillis, long failureDetectionIntervalMillis, long failureDetectionCount, @Nullable TelemetryCounter abortedConnectionsCounter)
boolean	isActiveContext()
boolean	isInvalidNodeStartTimeDefined()
void	resetInvalidNodeStartTime()
void	setConnectionValid(java.lang.String hostName, boolean connectionValid, long statusCheckStartNano, long statusCheckEndNano) Set whether the connection to the server is still valid based on the monitoring settings set in the Connection.
void	setFailureCount(long failureCount)
void	setInactive() Mark this context as inactive and release any connection references.
void	updateConnectionStatus(java.lang.String hostName, long statusCheckStartTimeNano, long statusCheckEndTimeNano, boolean isValid) Update whether the connection is still valid if the total elapsed time has passed the grace period.

Methods inherited from class software.amazon.jdbc.plugin.efm.base.HostMonitorConnectionContext

getConnection, isActive, isNodeUnhealthy, setNodeUnhealthy, shouldAbort

Methods inherited from class java.lang.Object

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

Constructor Detail

HostMonitorConnectionContextV1

public HostMonitorConnectionContextV1()

Method Detail

init

public void init(java.sql.Connection connectionToAbort,
                 long failureDetectionTimeMillis,
                 long failureDetectionIntervalMillis,
                 long failureDetectionCount,
                 @Nullable TelemetryCounter abortedConnectionsCounter)

getFailureDetectionIntervalMillis

public long getFailureDetectionIntervalMillis()

getFailureDetectionCount

public long getFailureDetectionCount()

getFailureCount

public long getFailureCount()

getExpectedActiveMonitoringStartTimeNano

public long getExpectedActiveMonitoringStartTimeNano()

setFailureCount

public void setFailureCount(long failureCount)

resetInvalidNodeStartTime

public void resetInvalidNodeStartTime()

isInvalidNodeStartTimeDefined

public boolean isInvalidNodeStartTimeDefined()

isActiveContext

public boolean isActiveContext()

setInactive

public void setInactive()

Description copied from interface: ConnectionContext

Mark this context as inactive and release any connection references.

Specified by:

setInactive in interface ConnectionContext

Overrides:

setInactive in class HostMonitorConnectionContext

abortConnection

public void abortConnection()

updateConnectionStatus

public void updateConnectionStatus(java.lang.String hostName,
                                   long statusCheckStartTimeNano,
                                   long statusCheckEndTimeNano,
                                   boolean isValid)

Update whether the connection is still valid if the total elapsed time has passed the grace period.

Parameters:

hostName - A node name for logging purposes.

statusCheckStartTimeNano - The time when connection status check started in nanos.

statusCheckEndTimeNano - The time when connection status check ended in nanos.

isValid - Whether the connection is valid.

setConnectionValid

public void setConnectionValid(java.lang.String hostName,
                               boolean connectionValid,
                               long statusCheckStartNano,
                               long statusCheckEndNano)

Set whether the connection to the server is still valid based on the monitoring settings set in the Connection.

These monitoring settings include:

• failureDetectionInterval
• failureDetectionTime
• failureDetectionCount

Parameters:

hostName - A node name for logging purposes.

connectionValid - Boolean indicating whether the server is still responsive.

statusCheckStartNano - The time when connection status check started in nanos.

statusCheckEndNano - The time when connection status check ended in nanos.

getLock

public ResourceLock getLock()