content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF 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.apache.bookkeeper.tests.containers;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  
  import com.github.dockerjava.api.async.ResultCallback;
  import com.github.dockerjava.api.command.LogContainerCmd;
  import com.github.dockerjava.api.model.Frame;
  import java.util.Objects;
  import java.util.concurrent.CompletableFuture;
  import java.util.concurrent.TimeUnit;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.bookkeeper.tests.integration.utils.DockerUtils;
  import org.apache.commons.lang3.StringUtils;
  import org.testcontainers.containers.GenericContainer;
  
  /**
   * A base container provides chaos capability.
   */
  @Slf4j
  public class ChaosContainer<SelfT extends ChaosContainer<SelfT>> extends GenericContainer<SelfT> {
  
      static class LogContainerResultCb extends ResultCallback.Adapter<Frame> {
          @Override
          public void onNext(Frame frame) {
              log.info(new String(frame.getPayload(), UTF_8));
          }
      }
  
      protected final String clusterName;
  
      protected ChaosContainer(String clusterName, String image) {
          super(image);
          this.clusterName = clusterName;
      }
  
      protected void beforeStop() {
          if (null == this.getContainerId()) {
              return;
          }
  
          DockerUtils.dumpContainerLogToTarget(
              getDockerClient(),
              getContainerName()
          );
      }
  
      @Override
      public void stop() {
          beforeStop();
          super.stop();
      }
  
      public void tailContainerLog() {
          CompletableFuture.runAsync(() -> {
              while (null == this.getContainerId()) {
                  try {
                      TimeUnit.MILLISECONDS.sleep(100);
                  } catch (InterruptedException e) {
                      return;
                  }
              }
  
              LogContainerCmd logContainerCmd = this.dockerClient.logContainerCmd(this.getContainerId());
              logContainerCmd.withStdOut(true).withStdErr(true).withFollowStream(true);
              logContainerCmd.exec(new LogContainerResultCb());
          });
      }
  
      public String getContainerLog() {
          StringBuilder sb = new StringBuilder();
  
          LogContainerCmd logContainerCmd = this.dockerClient.logContainerCmd(this.getContainerId());
          logContainerCmd.withStdOut(true).withStdErr(true);
          try {
              logContainerCmd.exec(new LogContainerResultCb()).awaitCompletion();
          } catch (InterruptedException e) {
  
          }
          return sb.toString();
      }
  
      public ExecResult execCmd(String... cmd) throws Exception {
          String cmdString = StringUtils.join(cmd, " ");
  
          log.info("DOCKER.exec({}:{}): Executing ...", this.getContainerId(), cmdString);
  
          ExecResult result = execInContainer(cmd);
  
          log.info("Docker.exec({}:{}): Done", this.getContainerId(), cmdString);
          log.info("Docker.exec({}:{}): Stdout -\n{}", this.getContainerId(), cmdString, result.getStdout());
          log.info("Docker.exec({}:{}): Stderr -\n{}", this.getContainerId(), cmdString, result.getStderr());
  
          return result;
      }
  
      @Override
      public boolean equals(Object o) {
          if (!(o instanceof ChaosContainer)) {
              return false;
          }
  
          ChaosContainer another = (ChaosContainer) o;
          return clusterName.equals(another.clusterName)
              && super.equals(another);
      }
  
      @Override
      public int hashCode() {
          return 31 * super.hashCode() + Objects.hash(
              clusterName);
      }
  
  }
  