@ExperimentalApi(value="https://github.com/grpc/grpc-java/issues/4159") public abstract class NameResolverProvider extends NameResolver.Factory
Implementations can be automatically discovered by gRPC via Java's SPI mechanism. For
automatic discovery, the implementation must have a zero-argument constructor and include
a resource named
META-INF/services/io.grpc.NameResolverProvider in their JAR. The
file's contents should be the implementation's class name. Implementations that need arguments in
their constructor can be manually registered by
Implementations should not throw. If they do, it may interrupt class loading. If
exceptions may reasonably occur for implementation-specific reasons, implementations should
generally handle the exception gracefully and return
|Constructor and Description|
|Modifier and Type||Method and Description|
Returns the scheme associated with the provider.
Whether this provider is available for use, taking the current environment into consideration.
A priority, from 0 to 10 that this provider should be used, taking the current environment into consideration.
protected abstract boolean isAvailable()
false, no other methods are safe to be called.
protected abstract int priority()
protected String getScheme()
NameResolverwhen target URI scheme matches the provider scheme. It temporarily delegates to
NameResolver.Factoryis deprecated in https://github.com/grpc/grpc-java/issues/7133.
protected Collection<Class<? extends SocketAddress>> getProducedSocketAddressTypes()
SocketAddresstypes this provider's name-resolver is capable of producing. This enables selection of the appropriate
ManagedChannelProviderfor a channel.
SocketAddresstypes this provider's name-resolver is capable of producing.