/*
* 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.ambari.server.security.credential;
/**
* CredentialFactory create Credential instances after determing what type of Credential is represented
* by the value data.
*/
public class CredentialFactory {
/**
* Give a credential value (assumed from a keystore), attempt to determine what type of Credential
* is represented and create the appropriate Credential implementation.
* <p/>
* For example, if the raw value starts with "PrincipalKeyCredential" it is determined to be
* a PrincipalKeyCredential. A new PrincipalKeyCredential is created and then returned.
*
* @param value the raw credential value
* @return a Credential
* @throws InvalidCredentialValueException if an error occurs while parsing the raw credential value
*/
public static Credential createCredential(char[] value) throws InvalidCredentialValueException {
if (value == null) {
return null;
} else {
String valueString = String.valueOf(value);
if (PrincipalKeyCredential.isValidValue(valueString)) {
return PrincipalKeyCredential.fromValue(valueString);
} else {
return GenericKeyCredential.fromValue(valueString);
}
}
}
}