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.docker.v1_41;
  
  import static java.net.HttpURLConnection.HTTP_OK;
  import static org.openqa.selenium.docker.v1_41.V141Docker.DOCKER_API_VERSION;
  import static org.openqa.selenium.json.Json.MAP_TYPE;
  import static org.openqa.selenium.remote.http.HttpMethod.GET;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.logging.Logger;
  import java.util.stream.Collectors;
  import org.openqa.selenium.docker.ContainerId;
  import org.openqa.selenium.docker.ContainerInfo;
  import org.openqa.selenium.internal.Require;
  import org.openqa.selenium.json.Json;
  import org.openqa.selenium.remote.http.Contents;
  import org.openqa.selenium.remote.http.HttpHandler;
  import org.openqa.selenium.remote.http.HttpRequest;
  import org.openqa.selenium.remote.http.HttpResponse;
  
  class InspectContainer {
    private static final Logger LOG = Logger.getLogger(InspectContainer.class.getName());
    private static final Json JSON = new Json();
    private final HttpHandler client;
  
    public InspectContainer(HttpHandler client) {
      this.client = Require.nonNull("HTTP client", client);
    }
  
    @SuppressWarnings("unchecked")
    public ContainerInfo apply(ContainerId id) {
      Require.nonNull("Container id", id);
  
      HttpResponse res =
          client.execute(
              new HttpRequest(GET, String.format("/v%s/containers/%s/json", DOCKER_API_VERSION, id))
                  .addHeader("Content-Type", "text/plain"));
      if (res.getStatus() != HTTP_OK) {
        LOG.warning("Unable to inspect container " + id);
      }
      Map<String, Object> rawInspectInfo = JSON.toType(Contents.string(res), MAP_TYPE);
      Map<String, Object> networkSettings =
          (Map<String, Object>) rawInspectInfo.get("NetworkSettings");
      Map<String, Object> networks = (Map<String, Object>) networkSettings.get("Networks");
      Map.Entry<String, Object> firstNetworkEntry = networks.entrySet().iterator().next();
      Map<String, Object> networkValues = (Map<String, Object>) firstNetworkEntry.getValue();
      String networkName = firstNetworkEntry.getKey();
      String ip = networkValues.get("IPAddress").toString();
      ArrayList<Object> mounts = (ArrayList<Object>) rawInspectInfo.get("Mounts");
      List<Map<String, Object>> mountedVolumes =
          mounts.stream().map(mount -> (Map<String, Object>) mount).collect(Collectors.toList());
  
      return new ContainerInfo(id, ip, mountedVolumes, networkName);
    }
  }
  