com.obs.services.EnvironmentVariableObsCredentialsProvider Maven / Gradle / Ivy
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/**
* Copyright 2019 Huawei Technologies Co.,Ltd.
* Licensed 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 com.obs.services;
import com.obs.services.internal.ObsConstraint;
import com.obs.services.internal.security.BasicSecurityKey;
import com.obs.services.internal.utils.ServiceUtils;
import com.obs.services.model.ISecurityKey;
public class EnvironmentVariableObsCredentialsProvider implements IObsCredentialsProvider {
volatile private BasicSecurityKey securityKey;
@Override
public void setSecurityKey(ISecurityKey securityKey) {
throw new UnsupportedOperationException(
"EnvironmentVariableObsCredentialsProvider class does not support this method");
}
@Override
public ISecurityKey getSecurityKey() {
if (securityKey == null) {
synchronized (this) {
if (securityKey == null) {
String accessKey = stringTrim(System.getenv(ObsConstraint.ACCESS_KEY_ENV_VAR));
String secretKey = stringTrim(System.getenv(ObsConstraint.SECRET_KEY_ENV_VAR));
String securityToken = stringTrim(System.getenv(ObsConstraint.SECURITY_TOKEN_ENV_VAR));
ServiceUtils.assertParameterNotNull(accessKey, "access key should not be null or empty.");
ServiceUtils.assertParameterNotNull(secretKey, "secret key should not be null or empty.");
securityKey = new BasicSecurityKey(accessKey, secretKey, securityToken);
}
}
}
return securityKey;
}
private static String stringTrim(String value) {
if (value == null) {
return null;
}
return value.trim();
}
}