code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC 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.openqa.selenium.grid.node.docker;
  
  import java.net.URL;
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.time.Duration;
  import java.time.Instant;
  import java.util.List;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  import org.openqa.selenium.Capabilities;
  import org.openqa.selenium.docker.Container;
  import org.openqa.selenium.grid.node.DefaultActiveSession;
  import org.openqa.selenium.internal.Require;
  import org.openqa.selenium.remote.Dialect;
  import org.openqa.selenium.remote.SessionId;
  import org.openqa.selenium.remote.http.HttpClient;
  import org.openqa.selenium.remote.tracing.Tracer;
  
  public class DockerSession extends DefaultActiveSession {
  
    private static final Logger LOG = Logger.getLogger(DockerSession.class.getName());
    private final Container container;
    private final Container videoContainer;
    private final DockerAssetsPath assetsPath;
  
    DockerSession(
        Container container,
        Container videoContainer,
        Tracer tracer,
        HttpClient client,
        SessionId id,
        URL url,
        Capabilities stereotype,
        Capabilities capabilities,
        Dialect downstream,
        Dialect upstream,
        Instant startTime,
        DockerAssetsPath assetsPath) {
      super(tracer, client, id, url, downstream, upstream, stereotype, capabilities, startTime);
      this.container = Require.nonNull("Container", container);
      this.videoContainer = videoContainer;
      this.assetsPath = Require.nonNull("Assets path", assetsPath);
    }
  
    @Override
    public void stop() {
      if (videoContainer != null) {
        videoContainer.stop(Duration.ofSeconds(10));
      }
      saveLogs();
      container.stop(Duration.ofMinutes(1));
    }
  
    private void saveLogs() {
      String sessionAssetsPath = assetsPath.getContainerPath(getId());
      String seleniumServerLog = String.format("%s/selenium-server.log", sessionAssetsPath);
      try {
        List<String> logs = container.getLogs().getLogLines();
        Files.write(Paths.get(seleniumServerLog), logs);
      } catch (Exception e) {
        LOG.log(Level.WARNING, "Error saving logs", e);
      }
    }
  }
  