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org.postgresql.hostchooser

public Class GlobalHostStatusTracker

extends Object
Class Inheritance
Imports
org.postgresql.jdbc.ResourceLock, org.postgresql.util.HostSpec, org.checkerframework.checker.nullness.qual.Nullable, java.util.ArrayList, .HashMap, .List, .Map
Keeps track of HostSpec targets in a global map.

Nested and Inner Type Summary

Modifier and TypeClass and Description
pack-priv static class
GlobalHostStatusTracker.HostSpecStatus

Field Summary

Modifier and TypeField and Description
private static final Map<HostSpec, GlobalHostStatusTracker.HostSpecStatus>
hostStatusMap

private static final ResourceLock
lock

Constructor Summary

AccessConstructor and Description
public
GlobalHostStatusTracker()

Method Summary

Modifier and TypeMethod and Description
pack-priv static List<HostSpec>

Returns:

candidate hosts to connect to.
getCandidateHosts(HostSpec[]
The potential list of hosts.
hostSpecs, HostRequirement
The required target server type.
targetServerType, long
How stale information is allowed.
hostRecheckMillis)

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

public static void
reportHostStatus(HostSpec
The host whose status is known.
hostSpec, HostStatus
Latest known status for the host.
hostStatus)

Store the actual observed host status.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

hostStatusMapback to summary
private static final Map<HostSpec, GlobalHostStatusTracker.HostSpecStatus> hostStatusMap
lockback to summary
private static final ResourceLock lock

Constructor Detail

GlobalHostStatusTrackerback to summary
public GlobalHostStatusTracker()

Method Detail

getCandidateHostsback to summary
pack-priv static List<HostSpec> getCandidateHosts(HostSpec[] hostSpecs, HostRequirement targetServerType, long hostRecheckMillis)

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

Parameters
hostSpecs:HostSpec[]

The potential list of hosts.

targetServerType:HostRequirement

The required target server type.

hostRecheckMillis:long

How stale information is allowed.

Returns:List<HostSpec>

candidate hosts to connect to.

reportHostStatusback to summary
public static void reportHostStatus(HostSpec hostSpec, HostStatus hostStatus)

Store the actual observed host status.

Parameters
hostSpec:HostSpec

The host whose status is known.

hostStatus:HostStatus

Latest known status for the host.

org.postgresql.hostchooser back to summary

pack-priv Class GlobalHostStatusTracker.HostSpecStatus

extends Object
Class Inheritance
  • java.lang.Object
  • org.postgresql.hostchooser.GlobalHostStatusTracker.HostSpecStatus

Field Summary

Modifier and TypeField and Description
pack-priv final HostSpec
host

pack-priv long
lastUpdated

pack-priv @Nullable HostStatus
status

Constructor Summary

AccessConstructor and Description
pack-priv
HostSpecStatus(HostSpec host)

Method Summary

Modifier and TypeMethod and Description
public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAllwaitwaitwait

Field Detail

hostback to summary
pack-priv final HostSpec host
lastUpdatedback to summary
pack-priv long lastUpdated
statusback to summary
pack-priv @Nullable HostStatus status

Constructor Detail

HostSpecStatusback to summary
pack-priv HostSpecStatus(HostSpec host)

Method Detail

toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Returns:String

a string representation of the object

Annotations
@Override