io.grpc

Class LoadBalancer.SubchannelPicker

java.lang.Object

io.grpc.LoadBalancer.SubchannelPicker

Enclosing class:

LoadBalancer

@ThreadSafe
public abstract static class LoadBalancer.SubchannelPicker
extends Object

The main balancing logic. It must be thread-safe. Typically it should only synchronize on its own state, and avoid synchronizing with the LoadBalancer's state.

Note: Implementations should override exactly one pickSubchannel.

Constructor Summary

Constructors

Constructor and Description
SubchannelPicker()

Method Summary

Modifier and Type	Method and Description
LoadBalancer.PickResult	pickSubchannel(Attributes affinity, Metadata headers) Deprecated. this signature is going to be removed in the next minor release. Implementations should instead override the pickSubchannel(LoadBalancer.PickSubchannelArgs).
LoadBalancer.PickResult	pickSubchannel(LoadBalancer.PickSubchannelArgs args) Make a balancing decision for a new RPC.

Methods inherited from class java.lang.Object

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

Constructor Detail

SubchannelPicker

public SubchannelPicker()

Method Detail

pickSubchannel

@Deprecated
public LoadBalancer.PickResult pickSubchannel(Attributes affinity,
                                                          Metadata headers)

Deprecated. this signature is going to be removed in the next minor release. Implementations should instead override the pickSubchannel(LoadBalancer.PickSubchannelArgs).

Make a balancing decision for a new RPC.

Parameters:

affinity - the affinity attributes provided via CallOptions.withAffinity(io.grpc.Attributes)

headers - the headers container of the RPC. It can be mutated within this method.

pickSubchannel

public LoadBalancer.PickResult pickSubchannel(LoadBalancer.PickSubchannelArgs args)

Make a balancing decision for a new RPC.

Parameters:

args - the pick arguments