/*
* Copyright © 2014 Cask Data, Inc.
*
* 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 co.cask.cdap.app.verification;
import co.cask.cdap.proto.Id;
/**
* A verifier for verifying the specifications provided.
* <p>
* Implementors of this interface will take Specification as input
* and verify the information within the specification meets satisfies
* all the checkpoints.
* </p>
* <p/>
* <p>
* Implementation of this interface are expected to be thread-safe,
* an can be safely accessed by multiple concurrent threads.
* </p>
*
* @param <T> Type of object to be verified.
*/
public interface Verifier<T> {
/**
* Verifies <code>input</code> and returns {@link VerifyResult}
* containing the status of verification.
*
* @param appId the application where this is verified
* @param input to be verified
* @return An instance of {@link VerifyResult}
*/
VerifyResult verify(Id.Application appId, T input);
}