/*
    * 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.logging.log4j.kubernetes;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.status.StatusLogger;
  
  import io.fabric8.kubernetes.client.Config;
  import io.fabric8.kubernetes.client.ConfigBuilder;
  import io.fabric8.kubernetes.client.DefaultKubernetesClient;
  import io.fabric8.kubernetes.client.KubernetesClient;
  
  /**
   * Builds a Kubernetes Client.
   */
  public class KubernetesClientBuilder {
  
      private static final Logger LOGGER = StatusLogger.getLogger();
  
      public KubernetesClient createClient() {
          Config config = kubernetesClientConfig();
          return config != null ? new DefaultKubernetesClient(config) : null;
      }
  
      private Config kubernetesClientConfig() {
          Config base = null;
          try {
              base = Config.autoConfigure(null);
          } catch (Exception ex) {
              if (ex instanceof  NullPointerException) {
                  return null;
              }
          }
          KubernetesClientProperties props = new KubernetesClientProperties(base);
          Config properties = new ConfigBuilder(base)
                  .withApiVersion(props.getApiVersion())
                  .withCaCertData(props.getCaCertData())
                  .withCaCertFile(props.getCaCertFile())
                  .withClientCertData(props.getClientCertData())
                  .withClientCertFile(props.getClientCertFile())
                  .withClientKeyAlgo(props.getClientKeyAlgo())
                  .withClientKeyData(props.getClientKeyData())
                  .withClientKeyFile(props.getClientKeyFile())
                  .withClientKeyPassphrase(props.getClientKeyPassphrase())
                  .withConnectionTimeout(props.getConnectionTimeout())
                  .withHttpProxy(props.getHttpProxy())
                  .withHttpsProxy(props.getHttpsProxy())
                  .withMasterUrl(props.getMasterUrl())
                  .withNamespace(props.getNamespace())
                  .withNoProxy(props.getNoProxy())
                  .withPassword(props.getPassword())
                  .withProxyPassword(props.getProxyPassword())
                  .withProxyUsername(props.getProxyUsername())
                  .withRequestTimeout(props.getRequestTimeout())
                  .withRollingTimeout(props.getRollingTimeout())
                  .withTrustCerts(props.isTrustCerts())
                  .withUsername(props.getUsername())
                  .build();
          return properties;
      }
  }