/**
* 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 backtype.storm.security.auth;
import java.util.Map;
/**
* Nimbus could be configured with an authorization plugin. If not specified, all requests are authorized.
*
* You could specify the authorization plugin via storm parameter. For example: storm -c nimbus.authorization.class=backtype.storm.security.auth.NoopAuthorizer
* ...
*
* You could also specify it via storm.yaml: nimbus.authorization.class: backtype.storm.security.auth.NoopAuthorizer
*/
public interface IAuthorizer {
/**
* Invoked once immediately after construction
*
* @param conf Storm configuration
*/
void prepare(Map storm_conf);
/**
* permit() method is invoked for each incoming Thrift request.
*
* @param context request context includes info about
* @param operation operation name
* @param topology_storm configuration of targeted topology
* @return true if the request is authorized, false if reject
*/
public boolean permit(ReqContext context, String operation, Map topology_conf);
}