code: /*
   * 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.skywalking.oap.server.library.datacarrier;
  
  /**
   * Read value from system env.
   */
  public class EnvUtil {
      public static int getInt(String envName, int defaultValue) {
          int value = defaultValue;
          String envValue = System.getenv(envName);
          if (envValue != null) {
              try {
                  value = Integer.parseInt(envValue);
              } catch (NumberFormatException e) {
  
              }
          }
          return value;
      }
  
      public static long getLong(String envName, long defaultValue) {
          long value = defaultValue;
          String envValue = System.getenv(envName);
          if (envValue != null) {
              try {
                  value = Long.parseLong(envValue);
              } catch (NumberFormatException e) {
  
              }
          }
          return value;
      }
  }
  