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InternalXdsAttributes.java
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InternalXdsAttributes.java
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/*
* Copyright 2019 The gRPC Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.grpc.xds;
import io.grpc.Attributes;
import io.grpc.Grpc;
import io.grpc.Internal;
import io.grpc.NameResolver;
import io.grpc.internal.ObjectPool;
import io.grpc.xds.LoadStatsManager.LoadStatsStore;
import io.grpc.xds.XdsNameResolverProvider.CallCounterProvider;
import io.grpc.xds.internal.sds.SslContextProviderSupplier;
/**
* Internal attributes used for xDS implementation. Do not use.
*/
@Internal
public final class InternalXdsAttributes {
// TODO(sanjaypujare): move to xds internal package.
/** Attribute key for SslContextProviderSupplier (used from client) for a subchannel. */
@Grpc.TransportAttr
public static final Attributes.Key<SslContextProviderSupplier>
ATTR_SSL_CONTEXT_PROVIDER_SUPPLIER =
Attributes.Key.create("io.grpc.xds.internal.sds.SslContextProviderSupplier");
/**
* Attribute key for passing around the XdsClient object pool across NameResolver/LoadBalancers.
*/
@NameResolver.ResolutionResultAttr
static final Attributes.Key<ObjectPool<XdsClient>> XDS_CLIENT_POOL =
Attributes.Key.create("io.grpc.xds.XdsAttributes.xdsClientPool");
/**
* Attribute key for obtaining the global provider that provides atomics for aggregating
* outstanding RPCs sent to each cluster.
*/
@NameResolver.ResolutionResultAttr
static final Attributes.Key<CallCounterProvider> CALL_COUNTER_PROVIDER =
Attributes.Key.create("io.grpc.xds.XdsAttributes.callCounterProvider");
// TODO (chengyuanzhang): temporary solution for migrating to LRS policy. Should access
// stats object via XdsClient interface.
static final Attributes.Key<LoadStatsStore> ATTR_CLUSTER_SERVICE_LOAD_STATS_STORE =
Attributes.Key.create("io.grpc.xds.XdsAttributes.loadStatsStore");
private InternalXdsAttributes() {}
}