| /* |
| * Copyright 2015, Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package io.grpc.internal; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.base.Stopwatch; |
| import com.google.common.base.Supplier; |
| import com.google.instrumentation.stats.StatsContextFactory; |
| import io.grpc.CallOptions; |
| import io.grpc.Channel; |
| import io.grpc.ClientCall; |
| import io.grpc.Metadata; |
| import io.grpc.MethodDescriptor; |
| import io.grpc.internal.ClientCallImpl.ClientTransportProvider; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.ScheduledExecutorService; |
| |
| /** |
| * A {@link Channel} that wraps a {@link ClientTransport}. |
| */ |
| final class SingleTransportChannel extends Channel { |
| |
| private final StatsContextFactory statsFactory; |
| private final ClientTransport transport; |
| private final Executor executor; |
| private final String authority; |
| private final ScheduledExecutorService deadlineCancellationExecutor; |
| private final Supplier<Stopwatch> stopwatchSupplier; |
| |
| private final ClientTransportProvider transportProvider = new ClientTransportProvider() { |
| @Override |
| public ClientTransport get(CallOptions callOptions, Metadata headers) { |
| return transport; |
| } |
| }; |
| |
| /** |
| * Creates a new channel with a connected transport. |
| */ |
| public SingleTransportChannel(StatsContextFactory statsFactory, ClientTransport transport, |
| Executor executor, ScheduledExecutorService deadlineCancellationExecutor, String authority, |
| Supplier<Stopwatch> stopwatchSupplier) { |
| this.statsFactory = Preconditions.checkNotNull(statsFactory, "statsFactory"); |
| this.transport = Preconditions.checkNotNull(transport, "transport"); |
| this.executor = Preconditions.checkNotNull(executor, "executor"); |
| this.deadlineCancellationExecutor = Preconditions.checkNotNull( |
| deadlineCancellationExecutor, "deadlineCancellationExecutor"); |
| this.authority = Preconditions.checkNotNull(authority, "authority"); |
| this.stopwatchSupplier = Preconditions.checkNotNull(stopwatchSupplier, "stopwatchSupplier"); |
| } |
| |
| @Override |
| public <RequestT, ResponseT> ClientCall<RequestT, ResponseT> newCall( |
| MethodDescriptor<RequestT, ResponseT> methodDescriptor, CallOptions callOptions) { |
| StatsTraceContext statsTraceCtx = StatsTraceContext.newClientContext( |
| methodDescriptor.getFullMethodName(), statsFactory, stopwatchSupplier); |
| return new ClientCallImpl<RequestT, ResponseT>(methodDescriptor, |
| new SerializingExecutor(executor), callOptions, statsTraceCtx, transportProvider, |
| deadlineCancellationExecutor); |
| } |
| |
| @Override |
| public String authority() { |
| return authority; |
| } |
| } |