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Use the GRPC assistant API in ClusterMembership client/server (#1251)
* Use the GRPC assistant API in ClusterMembership client/server * Code review requests
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tbak
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Apr 7, 2022
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127 changes: 127 additions & 0 deletions
127
...va/com/netflix/titus/client/clustermembership/resolver/SimpleClusterMembershipClient.java
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/* | ||
* Copyright 2022 Netflix, Inc. | ||
* | ||
* 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. | ||
*/ | ||
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package com.netflix.titus.client.clustermembership.resolver; | ||
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import com.google.protobuf.Empty; | ||
import com.netflix.titus.client.clustermembership.grpc.ClusterMembershipClient; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipEvent; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipRevision; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipRevisions; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipServiceGrpc; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipServiceGrpc.ClusterMembershipServiceStub; | ||
import com.netflix.titus.grpc.protogen.DeleteMemberLabelsRequest; | ||
import com.netflix.titus.grpc.protogen.EnableMemberRequest; | ||
import com.netflix.titus.grpc.protogen.MemberId; | ||
import com.netflix.titus.grpc.protogen.UpdateMemberLabelsRequest; | ||
import io.grpc.ManagedChannel; | ||
import io.grpc.stub.StreamObserver; | ||
import reactor.core.publisher.Flux; | ||
import reactor.core.publisher.Mono; | ||
import reactor.core.publisher.MonoSink; | ||
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/** | ||
* FIXME We need this implementation for testing as DefaultClusterMembershipClient is located in titus-common-server package. | ||
* To resolve this issue we have to move CallMetadata classes to titus-common-client. | ||
*/ | ||
class SimpleClusterMembershipClient implements ClusterMembershipClient { | ||
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private final ManagedChannel channel; | ||
private final ClusterMembershipServiceStub stub; | ||
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public SimpleClusterMembershipClient(ManagedChannel channel) { | ||
this.channel = channel; | ||
this.stub = ClusterMembershipServiceGrpc.newStub(channel); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevisions> getMembers() { | ||
return Mono.create(sink -> stub.getMembers(Empty.getDefaultInstance(), connectSink(sink))); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> getMember(MemberId request) { | ||
return Mono.create(sink -> stub.getMember(request, connectSink(sink))); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> updateMemberLabels(UpdateMemberLabelsRequest request) { | ||
return Mono.create(sink -> stub.updateMemberLabels(request, connectSink(sink))); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> deleteMemberLabels(DeleteMemberLabelsRequest request) { | ||
return Mono.create(sink -> stub.deleteMemberLabels(request, connectSink(sink))); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> enableMember(EnableMemberRequest request) { | ||
return Mono.create(sink -> stub.enableMember(request, connectSink(sink))); | ||
} | ||
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@Override | ||
public Mono<Void> stopBeingLeader() { | ||
return Mono.<Empty>create(sink -> stub.stopBeingLeader(Empty.getDefaultInstance(), connectSink(sink))) | ||
.ignoreElement() | ||
.cast(Void.class); | ||
} | ||
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@Override | ||
public Flux<ClusterMembershipEvent> events() { | ||
return Flux.create(sink -> { | ||
stub.events(Empty.getDefaultInstance(), new StreamObserver<ClusterMembershipEvent>() { | ||
@Override | ||
public void onNext(ClusterMembershipEvent value) { | ||
sink.next(value); | ||
} | ||
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@Override | ||
public void onError(Throwable t) { | ||
sink.error(t); | ||
} | ||
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@Override | ||
public void onCompleted() { | ||
sink.complete(); | ||
} | ||
}); | ||
}); | ||
} | ||
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@Override | ||
public void shutdown() { | ||
channel.shutdownNow(); | ||
} | ||
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private <T> StreamObserver<T> connectSink(MonoSink<T> sink) { | ||
return new StreamObserver<T>() { | ||
@Override | ||
public void onNext(T value) { | ||
sink.success(value); | ||
} | ||
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@Override | ||
public void onError(Throwable t) { | ||
sink.error(t); | ||
} | ||
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@Override | ||
public void onCompleted() { | ||
sink.success(); | ||
} | ||
}; | ||
} | ||
} |
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87 changes: 87 additions & 0 deletions
87
...main/java/com/netflix/titus/runtime/clustermembership/DefaultClusterMembershipClient.java
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/* | ||
* Copyright 2022 Netflix, Inc. | ||
* | ||
* 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. | ||
*/ | ||
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package com.netflix.titus.runtime.clustermembership; | ||
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import com.google.protobuf.Empty; | ||
import com.netflix.titus.client.clustermembership.grpc.ClusterMembershipClient; | ||
import com.netflix.titus.common.util.ExceptionExt; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipEvent; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipRevision; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipRevisions; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipServiceGrpc; | ||
import com.netflix.titus.grpc.protogen.ClusterMembershipServiceGrpc.ClusterMembershipServiceStub; | ||
import com.netflix.titus.grpc.protogen.DeleteMemberLabelsRequest; | ||
import com.netflix.titus.grpc.protogen.EnableMemberRequest; | ||
import com.netflix.titus.grpc.protogen.MemberId; | ||
import com.netflix.titus.grpc.protogen.UpdateMemberLabelsRequest; | ||
import com.netflix.titus.runtime.endpoint.common.grpc.assistant.GrpcClientCallAssistant; | ||
import com.netflix.titus.runtime.endpoint.common.grpc.assistant.GrpcClientCallAssistantFactory; | ||
import io.grpc.ManagedChannel; | ||
import reactor.core.publisher.Flux; | ||
import reactor.core.publisher.Mono; | ||
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public class DefaultClusterMembershipClient implements ClusterMembershipClient { | ||
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private final GrpcClientCallAssistant<ClusterMembershipServiceStub> assistant; | ||
private final ManagedChannel managedChannel; | ||
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public DefaultClusterMembershipClient(GrpcClientCallAssistantFactory assistantFactory, | ||
ManagedChannel managedChannel) { | ||
this.managedChannel = managedChannel; | ||
this.assistant = assistantFactory.create(ClusterMembershipServiceGrpc.newStub(managedChannel)); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevisions> getMembers() { | ||
return assistant.asMono((stub, responseStream) -> stub.getMembers(Empty.getDefaultInstance(), responseStream)); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> getMember(MemberId request) { | ||
return assistant.asMono((stub, responseStream) -> stub.getMember(request, responseStream)); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> updateMemberLabels(UpdateMemberLabelsRequest request) { | ||
return assistant.asMono((stub, responseStream) -> stub.updateMemberLabels(request, responseStream)); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> deleteMemberLabels(DeleteMemberLabelsRequest request) { | ||
return assistant.asMono((stub, responseStream) -> stub.deleteMemberLabels(request, responseStream)); | ||
} | ||
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@Override | ||
public Mono<ClusterMembershipRevision> enableMember(EnableMemberRequest request) { | ||
return assistant.asMono((stub, responseStream) -> stub.enableMember(request, responseStream)); | ||
} | ||
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@Override | ||
public Mono<Void> stopBeingLeader() { | ||
return assistant.asMonoEmpty((stub, responseStream) -> stub.stopBeingLeader(Empty.getDefaultInstance(), responseStream)); | ||
} | ||
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@Override | ||
public Flux<ClusterMembershipEvent> events() { | ||
return assistant.asFlux((stub, responseStream) -> stub.events(Empty.getDefaultInstance(), responseStream)); | ||
} | ||
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@Override | ||
public void shutdown() { | ||
ExceptionExt.silent(managedChannel::shutdownNow); | ||
} | ||
} |
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