2 * ============LICENSE_START=======================================================
3 * aaf-certservice-client
4 * ================================================================================
5 * Copyright (C) 2020 Nokia. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.aaf.certservice.client.configuration;
23 import java.util.Optional;
25 public class EnvProvider {
26 public Optional<String> readEnvVariable(String envVariableName) {
27 return Optional.ofNullable(getSystemEnv(envVariableName))
28 .filter(EnvProvider::isEnvPresent);
31 String getSystemEnv(String envVariableName) {
32 return System.getenv(envVariableName);
35 private static Boolean isEnvPresent(String envValue) {
36 return !"".equals(envValue);