/*
* Copyright © 2016 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.data2.dataset2;
import co.cask.cdap.api.dataset.DatasetManagementException;
import co.cask.cdap.common.DatasetNotFoundException;
import co.cask.cdap.common.entity.EntityExistenceVerifier;
import co.cask.cdap.proto.id.DatasetId;
import com.google.common.base.Throwables;
import com.google.inject.Inject;
/**
* {@link EntityExistenceVerifier} for {@link DatasetId datasets}.
*/
public class DatasetExistenceVerifier implements EntityExistenceVerifier<DatasetId> {
private final DatasetFramework dsFramework;
@Inject
DatasetExistenceVerifier(DatasetFramework dsFramework) {
this.dsFramework = dsFramework;
}
@Override
public void ensureExists(DatasetId datasetId) throws DatasetNotFoundException {
try {
if (!dsFramework.hasInstance(datasetId.toId())) {
throw new DatasetNotFoundException(datasetId.toId());
}
} catch (DatasetManagementException e) {
throw Throwables.propagate(e);
}
}
}