| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.runners.dataflow.worker; |
| |
| import javax.annotation.Nullable; |
| import org.apache.beam.model.pipeline.v1.Endpoints.ApiServiceDescriptor; |
| import org.apache.beam.runners.fnexecution.GrpcFnServer; |
| import org.apache.beam.runners.fnexecution.control.FnApiControlClient; |
| import org.apache.beam.runners.fnexecution.data.GrpcDataService; |
| import org.apache.beam.runners.fnexecution.state.GrpcStateService; |
| |
| /** Registry used to manage all the connections (Control, Data, State) from SdkHarness */ |
| public interface SdkHarnessRegistry { |
| /** |
| * Register the {@link FnApiControlClient} to allocate work to the client |
| * |
| * @param controlClient |
| */ |
| void registerWorkerClient(@Nullable FnApiControlClient controlClient); |
| |
| /** |
| * Unregister the {@link FnApiControlClient} to stop allocating work to the client |
| * |
| * @param controlClient |
| */ |
| void unregisterWorkerClient(FnApiControlClient controlClient); |
| |
| /** Returns true if all of the registered SDK harnesses are healthy. */ |
| boolean sdkHarnessesAreHealthy(); |
| |
| /** Find the available worker and assign work to it or wait till a worker becomes available */ |
| SdkWorkerHarness getAvailableWorkerAndAssignWork(); |
| |
| void completeWork(SdkWorkerHarness worker); |
| |
| @Nullable |
| ApiServiceDescriptor beamFnStateApiServiceDescriptor(); |
| |
| @Nullable |
| ApiServiceDescriptor beamFnDataApiServiceDescriptor(); |
| |
| /** Class to keep client and associated data */ |
| interface SdkWorkerHarness { |
| |
| @Nullable |
| public FnApiControlClient getControlClientHandler(); |
| |
| @Nullable |
| public String getWorkerId(); |
| |
| @Nullable |
| public GrpcFnServer<GrpcDataService> getGrpcDataFnServer(); |
| |
| @Nullable |
| public GrpcFnServer<GrpcStateService> getGrpcStateFnServer(); |
| } |
| } |