software.amazon.jdbc.plugin.efm2

Class HostMonitorImpl

java.lang.Object

software.amazon.jdbc.plugin.efm2.HostMonitorImpl

All Implemented Interfaces:

java.lang.AutoCloseable, java.lang.Runnable, HostMonitor

public class HostMonitorImpl
extends java.lang.Object
implements HostMonitor

This class uses a background thread to monitor a particular server with one or more active Connection.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.util.concurrent.Executor	ABORT_EXECUTOR

Constructor Summary

Constructors

Constructor and Description
HostMonitorImpl(@NonNull PluginService pluginService, @NonNull HostSpec hostSpec, @NonNull java.util.Properties properties, int failureDetectionTimeMillis, int failureDetectionIntervalMillis, int failureDetectionCount, TelemetryCounter abortedConnectionsCounter) Store the monitoring configuration for a connection.

Method Summary

Modifier and Type	Method and Description
boolean	canDispose()
void	close()
void	newContextRun()
void	run()
void	startMonitoring(HostMonitorConnectionContext context)

Methods inherited from class java.lang.Object

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

Field Detail

ABORT_EXECUTOR

protected static final java.util.concurrent.Executor ABORT_EXECUTOR

Constructor Detail

HostMonitorImpl

public HostMonitorImpl(@NonNull PluginService pluginService,
                       @NonNull HostSpec hostSpec,
                       @NonNull java.util.Properties properties,
                       int failureDetectionTimeMillis,
                       int failureDetectionIntervalMillis,
                       int failureDetectionCount,
                       TelemetryCounter abortedConnectionsCounter)

Store the monitoring configuration for a connection.

Parameters:

pluginService - A service for creating new connections.

hostSpec - The HostSpec of the server this HostMonitorImpl instance is monitoring.

properties - The Properties containing additional monitoring configuration.

failureDetectionTimeMillis - A failure detection time in millis.

failureDetectionIntervalMillis - A failure detection interval in millis.

failureDetectionCount - A failure detection count.

abortedConnectionsCounter - Aborted connection telemetry counter.

Method Detail

canDispose

public boolean canDispose()

Specified by:

canDispose in interface HostMonitor

close

public void close()
           throws java.lang.Exception

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.lang.Exception

startMonitoring

public void startMonitoring(HostMonitorConnectionContext context)

Specified by:

startMonitoring in interface HostMonitor

newContextRun

public void newContextRun()

run

public void run()

Specified by:

run in interface java.lang.Runnable