grpc-swift-nio-transport/Sources/GRPCHTTP2Core/Server/Connection/GRPCServerFlushNotificationHandler.swift

/*
 * Copyright 2024, gRPC 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.
 */

internal import NIOCore

@available(macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0, *)
final class GRPCServerFlushNotificationHandler: ChannelOutboundHandler {
  typealias OutboundIn = Any
  typealias OutboundOut = Any

  private let serverConnectionManagementHandler: ServerConnectionManagementHandler

  init(
    serverConnectionManagementHandler: ServerConnectionManagementHandler
  ) {
    self.serverConnectionManagementHandler = serverConnectionManagementHandler
  }

  func flush(context: ChannelHandlerContext) {
    self.serverConnectionManagementHandler.syncView.connectionWillFlush()
    context.flush()
  }
}