| /** |
| * 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. |
| */ |
| |
| using System; |
| using System.Globalization; |
| using Org.Apache.REEF.Utilities.Logging; |
| |
| namespace Org.Apache.REEF.Utilities |
| { |
| public class ValidationUtilities |
| { |
| private static readonly Logger LOGGER = Logger.GetLogger(typeof(ValidationUtilities)); |
| |
| public static string ValidateEnvVariable(string env) |
| { |
| string envVariable = Environment.GetEnvironmentVariable(env); |
| if (string.IsNullOrWhiteSpace(envVariable)) |
| { |
| Console.WriteLine(string.Format(CultureInfo.InvariantCulture, "{0} not set. Please set the environment variable first. Exiting...", env)); |
| string msg = string.Format(CultureInfo.InvariantCulture, "No {0} found.", env); |
| Diagnostics.Exceptions.Throw(new InvalidOperationException(msg), msg, LOGGER); |
| } |
| return envVariable; |
| } |
| } |
| } |