Class GrpclbNameResolver

java.lang.Object

io.grpc.NameResolver

io.grpc.internal.DnsNameResolver

io.grpc.grpclb.GrpclbNameResolver

final class GrpclbNameResolver
extends DnsNameResolver

A DNS-based NameResolver with gRPC LB specific add-ons for resolving balancer addresses via service records.

See Also:

• SecretGrpclbNameResolverProvider

Nested Class Summary

Nested classes/interfaces inherited from class DnsNameResolver

DnsNameResolver.AddressResolver, DnsNameResolver.InternalResolutionResult, DnsNameResolver.ResourceResolver, DnsNameResolver.SrvRecord

Nested classes/interfaces inherited from class NameResolver

NameResolver.Args, NameResolver.ConfigOrError, NameResolver.Factory, NameResolver.Listener, NameResolver.Listener2, NameResolver.ResolutionResult, NameResolver.ResolutionResultAttr, NameResolver.ServiceConfigParser

Field Summary

Fields

Modifier and Type	Field	Description
private static final String	GRPCLB_NAME_PREFIX
private static final Logger	logger

Fields inherited from class DnsNameResolver

addressResolver, enableTxt, resolved

Constructor Summary

Constructors

Constructor	Description
GrpclbNameResolver(String nsAuthority, String name, NameResolver.Args args, SharedResourceHolder.Resource<Executor> executorResource, com.google.common.base.Stopwatch stopwatch, boolean isAndroid)

Method Summary

Modifier and Type	Method	Description
protected DnsNameResolver.InternalResolutionResult	doResolve(boolean forceTxt)	Main logic of name resolution.
protected String	getHost()
private List<EquivalentAddressGroup>	resolveBalancerAddresses()
protected void	setAddressResolver(DnsNameResolver.AddressResolver addressResolver)
(package private) static void	setEnableTxt(boolean enableTxt)
protected void	setResourceResolver(DnsNameResolver.ResourceResolver resourceResolver)

Methods inherited from class DnsNameResolver

getResourceResolver, getServiceAuthority, refresh, shouldUseJndi, shutdown, start

Methods inherited from class NameResolver

start

Methods inherited from class Object

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

Field Details

logger

private static final Logger logger

GRPCLB_NAME_PREFIX

private static final String GRPCLB_NAME_PREFIX

See Also:

• Constant Field Values

Constructor Details

GrpclbNameResolver

GrpclbNameResolver(@Nullable
 String nsAuthority,
 String name,
 NameResolver.Args args,
 SharedResourceHolder.Resource<Executor> executorResource,
 com.google.common.base.Stopwatch stopwatch,
 boolean isAndroid)

Method Details

doResolve

protected DnsNameResolver.InternalResolutionResult doResolve(boolean forceTxt)

Description copied from class: DnsNameResolver

Main logic of name resolution.

Overrides:

doResolve in class DnsNameResolver

resolveBalancerAddresses

private List<EquivalentAddressGroup> resolveBalancerAddresses()

setAddressResolver

protected void setAddressResolver(DnsNameResolver.AddressResolver addressResolver)

Overrides:

setAddressResolver in class DnsNameResolver

setResourceResolver

protected void setResourceResolver(DnsNameResolver.ResourceResolver resourceResolver)

Overrides:

setResourceResolver in class DnsNameResolver

getHost

protected String getHost()

Overrides:

getHost in class DnsNameResolver

setEnableTxt

static void setEnableTxt(boolean enableTxt)