/*
* 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.state.kerberos;
import java.io.File;
import java.io.IOException;
import java.util.Map;
import org.apache.ambari.server.AmbariException;
import com.google.inject.Singleton;
/**
* KerberosDescriptorFactory is a factory class used to create KerberosDescriptor instances using
* various sources of data.
*/
@Singleton
public class KerberosDescriptorFactory extends AbstractKerberosDescriptorFactory {
/**
* Given a file containing JSON-formatted text, attempts to create a KerberosDescriptor
*
* @param file a File pointing to the file containing JSON-formatted text
* @return a newly created KerberosDescriptor
* @throws java.io.FileNotFoundException if the specified File does not point to a valid file
* @throws java.io.IOException if the specified File is not a readable file
* @throws org.apache.ambari.server.AmbariException if the specified File does not contain valid JSON data
*/
public KerberosDescriptor createInstance(File file) throws IOException {
try {
return new KerberosDescriptor(parseFile(file));
} catch (AmbariException e) {
throw new AmbariException(String.format("An error occurred processing the JSON-formatted file: %s", file.getAbsolutePath()), e);
}
}
/**
* Given a String containing JSON-formatted text, attempts to create a KerberosDescriptor
*
* @param json a File pointing to the file containing JSON-formatted text
* @return a newly created KerberosDescriptor
* @throws AmbariException if an error occurs while processing the JSON-formatted String
*/
public KerberosDescriptor createInstance(String json) throws AmbariException {
try {
return new KerberosDescriptor(parseJSON(json));
} catch (AmbariException e) {
throw new AmbariException("An error occurred processing the JSON-formatted string", e);
}
}
/**
* Creates a new KerberosDescriptor
* <p/>
* See {@link org.apache.ambari.server.state.kerberos.KerberosDescriptor} for the JSON
* Schema that may be used to generate this map.
*
* @param map a Map of values use to populate the data for the new instance
* @see org.apache.ambari.server.state.kerberos.KerberosDescriptor
*/
public KerberosDescriptor createInstance(Map<?, ?> map) {
return new KerberosDescriptor(map);
}
}