Package org.postgresql.hostchooser

Class GlobalHostStatusTracker

java.lang.Object

org.postgresql.hostchooser.GlobalHostStatusTracker

public class GlobalHostStatusTracker
extends java.lang.Object

Keeps track of HostSpec targets in a global map.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	GlobalHostStatusTracker.HostSpecStatus

Field Summary

Fields

Modifier and Type	Field	Description
private static java.util.Map<HostSpec,GlobalHostStatusTracker.HostSpecStatus>	hostStatusMap
private static ResourceLock	lock

Constructor Summary

Constructors

Constructor	Description
GlobalHostStatusTracker()

Method Summary

Modifier and Type	Method	Description
(package private) static java.util.List<HostSpec>	getCandidateHosts(HostSpec[] hostSpecs, HostRequirement targetServerType, long hostRecheckMillis)	Returns a list of candidate hosts that have the required targetServerType.
static void	reportHostStatus(HostSpec hostSpec, HostStatus hostStatus)	Store the actual observed host status.

Methods inherited from class java.lang.Object

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

Field Detail

hostStatusMap

private static final java.util.Map<HostSpec,GlobalHostStatusTracker.HostSpecStatus> hostStatusMap

lock

private static final ResourceLock lock

Constructor Detail

GlobalHostStatusTracker

public GlobalHostStatusTracker()

Method Detail

reportHostStatus

public static void reportHostStatus(HostSpec hostSpec,
                                    HostStatus hostStatus)

Store the actual observed host status.

Parameters:

hostSpec - The host whose status is known.

hostStatus - Latest known status for the host.

getCandidateHosts

static java.util.List<HostSpec> getCandidateHosts(HostSpec[] hostSpecs,
                                                  HostRequirement targetServerType,
                                                  long hostRecheckMillis)

Returns a list of candidate hosts that have the required targetServerType.

Parameters:

hostSpecs - The potential list of hosts.

targetServerType - The required target server type.

hostRecheckMillis - How stale information is allowed.

Returns:

candidate hosts to connect to.