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xds: Avoid depending on io.grpc.xds.Internal* classes
Internal* classes should generally be accessors that are used outside of the package/project. Only one attribute was used outside of xds, so leave only that one attribute in InternalXdsAttributes. One attribute was used by the internal.security package, so move the definition to the same package to reduce the circular dependencies.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /* | ||
| * 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.EquivalentAddressGroup; | ||
| import io.grpc.Grpc; | ||
| import io.grpc.NameResolver; | ||
| import io.grpc.internal.ObjectPool; | ||
| import io.grpc.xds.XdsNameResolverProvider.CallCounterProvider; | ||
| import io.grpc.xds.client.Locality; | ||
| import io.grpc.xds.client.XdsClient; | ||
|
|
||
| /** | ||
| * Attributes used for xDS implementation. | ||
| */ | ||
| final class XdsAttributes { | ||
| /** | ||
| * 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"); | ||
|
|
||
| /** | ||
| * Map from localities to their weights. | ||
| */ | ||
| @NameResolver.ResolutionResultAttr | ||
| static final Attributes.Key<Integer> ATTR_LOCALITY_WEIGHT = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.localityWeight"); | ||
|
|
||
| /** | ||
| * Name of the cluster that provides this EquivalentAddressGroup. | ||
| */ | ||
| @EquivalentAddressGroup.Attr | ||
| public static final Attributes.Key<String> ATTR_CLUSTER_NAME = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.clusterName"); | ||
|
|
||
| /** | ||
| * The locality that this EquivalentAddressGroup is in. | ||
| */ | ||
| @EquivalentAddressGroup.Attr | ||
| static final Attributes.Key<Locality> ATTR_LOCALITY = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.locality"); | ||
|
|
||
| /** | ||
| * The name of the locality that this EquivalentAddressGroup is in. | ||
| */ | ||
| @EquivalentAddressGroup.Attr | ||
| static final Attributes.Key<String> ATTR_LOCALITY_NAME = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.localityName"); | ||
|
|
||
| /** | ||
| * Endpoint weight for load balancing purposes. | ||
| */ | ||
| @EquivalentAddressGroup.Attr | ||
| static final Attributes.Key<Long> ATTR_SERVER_WEIGHT = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.serverWeight"); | ||
|
|
||
| /** Name associated with individual address, if available (e.g., DNS name). */ | ||
| @EquivalentAddressGroup.Attr | ||
| static final Attributes.Key<String> ATTR_ADDRESS_NAME = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.addressName"); | ||
|
|
||
| /** | ||
| * Filter chain match for network filters. | ||
| */ | ||
| @Grpc.TransportAttr | ||
| static final Attributes.Key<FilterChainSelectorManager> | ||
| ATTR_FILTER_CHAIN_SELECTOR_MANAGER = Attributes.Key.create( | ||
| "io.grpc.xds.XdsAttributes.filterChainSelectorManager"); | ||
|
|
||
| /** Grace time to use when draining. Null for an infinite grace time. */ | ||
| @Grpc.TransportAttr | ||
| static final Attributes.Key<Long> ATTR_DRAIN_GRACE_NANOS = | ||
| Attributes.Key.create("io.grpc.xds.XdsAttributes.drainGraceTime"); | ||
|
|
||
| private XdsAttributes() {} | ||
| } |
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