Class GlobalHostStatusTracker

java.lang.Object

org.postgresql.hostchooser.GlobalHostStatusTracker

public class GlobalHostStatusTracker
extends 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 final Map<HostSpec, GlobalHostStatusTracker.HostSpecStatus>	hostStatusMap
private static final ResourceLock	lock

Constructor Summary

Constructors

Constructor	Description
GlobalHostStatusTracker()

Method Summary

Modifier and Type	Method	Description
(package private) static 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 Object

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

Field Details

hostStatusMap

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

lock

private static final ResourceLock lock

Constructor Details

GlobalHostStatusTracker

public GlobalHostStatusTracker()

Method Details

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 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.