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.chromium;
  
  import static org.openqa.selenium.chromium.ChromiumDriver.IS_CHROMIUM_BROWSER;
  
  import com.google.auto.service.AutoService;
  import com.google.common.collect.ImmutableMap;
  import java.time.Duration;
  import java.util.Map;
  import java.util.function.Predicate;
  import org.openqa.selenium.Capabilities;
  import org.openqa.selenium.internal.Require;
  import org.openqa.selenium.remote.AdditionalHttpCommands;
  import org.openqa.selenium.remote.AugmenterProvider;
  import org.openqa.selenium.remote.CommandInfo;
  import org.openqa.selenium.remote.ExecuteMethod;
  import org.openqa.selenium.remote.http.HttpMethod;
  
  @AutoService({AdditionalHttpCommands.class, AugmenterProvider.class})
  public class AddHasNetworkConditions
      implements AugmenterProvider<HasNetworkConditions>, AdditionalHttpCommands {
  
    public static final String GET_NETWORK_CONDITIONS = "getNetworkConditions";
    public static final String SET_NETWORK_CONDITIONS = "setNetworkConditions";
    public static final String DELETE_NETWORK_CONDITIONS = "deleteNetworkConditions";
  
    private static final Map<String, CommandInfo> COMMANDS =
        ImmutableMap.of(
            GET_NETWORK_CONDITIONS,
                new CommandInfo("/session/:sessionId/chromium/network_conditions", HttpMethod.GET),
            SET_NETWORK_CONDITIONS,
                new CommandInfo("/session/:sessionId/chromium/network_conditions", HttpMethod.POST),
            DELETE_NETWORK_CONDITIONS,
                new CommandInfo(
                    "/session/:sessionId/chromium/network_conditions", HttpMethod.DELETE));
  
    @Override
    public Map<String, CommandInfo> getAdditionalCommands() {
      return COMMANDS;
    }
  
    @Override
    public Predicate<Capabilities> isApplicable() {
      return caps -> IS_CHROMIUM_BROWSER.test(caps.getBrowserName());
    }
  
    @Override
    public Class<HasNetworkConditions> getDescribedInterface() {
      return HasNetworkConditions.class;
    }
  
    @Override
    public HasNetworkConditions getImplementation(
        Capabilities capabilities, ExecuteMethod executeMethod) {
      return new HasNetworkConditions() {
        @Override
        public ChromiumNetworkConditions getNetworkConditions() {
          @SuppressWarnings("unchecked")
          Map<String, Object> result =
              (Map<String, Object>) executeMethod.execute(GET_NETWORK_CONDITIONS, null);
          ChromiumNetworkConditions networkConditions = new ChromiumNetworkConditions();
          networkConditions.setOffline(
              (Boolean) result.getOrDefault(ChromiumNetworkConditions.OFFLINE, false));
          networkConditions.setLatency(
              Duration.ofMillis((Long) result.getOrDefault(ChromiumNetworkConditions.LATENCY, 0)));
          networkConditions.setDownloadThroughput(
              ((Number) result.getOrDefault(ChromiumNetworkConditions.DOWNLOAD_THROUGHPUT, -1))
                  .intValue());
          networkConditions.setDownloadThroughput(
              ((Number) result.getOrDefault(ChromiumNetworkConditions.UPLOAD_THROUGHPUT, -1))
                  .intValue());
          return networkConditions;
        }
  
        @Override
        public void setNetworkConditions(ChromiumNetworkConditions networkConditions) {
          Require.nonNull("Network Conditions", networkConditions);
  
          Map<String, Object> conditions =
              ImmutableMap.of(
                  ChromiumNetworkConditions.OFFLINE,
                  networkConditions.getOffline(),
                  ChromiumNetworkConditions.LATENCY,
                  networkConditions.getLatency().toMillis(),
                  ChromiumNetworkConditions.DOWNLOAD_THROUGHPUT,
                  networkConditions.getDownloadThroughput(),
                  ChromiumNetworkConditions.UPLOAD_THROUGHPUT,
                  networkConditions.getUploadThroughput());
          executeMethod.execute(
              SET_NETWORK_CONDITIONS, ImmutableMap.of("network_conditions", conditions));
        }
  
        @Override
        public void deleteNetworkConditions() {
          executeMethod.execute(DELETE_NETWORK_CONDITIONS, null);
        }
      };
    }
  }
  