| // Copyright 2021 The Bazel Authors. All rights reserved. |
| // |
| // 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 com.google.devtools.build.lib.remote.grpc; |
| |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe; |
| import io.reactivex.rxjava3.core.Single; |
| |
| /** |
| * A {@link ConnectionFactory} represents a resource factory for connection creation. It may create |
| * connections by itself, wrap a {@link ConnectionFactory}, or apply connection pooling on top of a |
| * {@link ConnectionFactory}. |
| * |
| * <p>A {@link ConnectionFactory} uses deferred initialization and should initiate connection |
| * resource allocation after subscription. |
| * |
| * <p>Connection creation must be cancellable. Canceling connection creation must release (“close”) |
| * the connection and all associated resources. |
| * |
| * <p>Implementations must be thread-safe. |
| */ |
| @ThreadSafe |
| public interface ConnectionFactory { |
| /** Creates a new {@link Connection}. */ |
| Single<? extends Connection> create(); |
| } |