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/*-
* ============LICENSE_START=======================================================
* openECOMP : SDN-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights
* reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.sdnc.vnfapi.util;
import com.google.common.base.Optional;
import com.google.common.util.concurrent.CheckedFuture;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.Vnfs;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.model.infrastructure.VnfList;
import org.opendaylight.yang.gen.v1.org.onap.sdnctl.vnf.rev150720.vnf.model.infrastructure.VnfListKey;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
/**
* This util class provides utility to read and write {@link VnfList} data objects from the {@link DataBroker}
*
*/
public class DataBrokerUtil {
private final DataBroker dataBroker;
public DataBrokerUtil(DataBroker dataBroker) {
this.dataBroker = dataBroker;
}
/** @return VnfList - the VnfList object read from the DataBroker or null if none was found */
public VnfList read(String VnfListKey, LogicalDatastoreType logicalDatastoreType) throws Exception {
InstanceIdentifier VnfListInstanceIdentifier = InstanceIdentifier.<Vnfs>builder(Vnfs.class)
.child(VnfList.class, new VnfListKey(VnfListKey)).build();
ReadOnlyTransaction readTx = dataBroker.newReadOnlyTransaction();
Optional<VnfList> data = (Optional<VnfList>) readTx.read(logicalDatastoreType, VnfListInstanceIdentifier).get();
if(!data.isPresent()){
return null;
}
return data.get();
}
/**
* Write the {@link VnfList} object to the {@link DataBroker}
* @param isReplace - false specifies the new data is to be merged into existing data, where as true cause the
* existing data to be replaced.
* @param VnfList - the {@link VnfList} data object to be presisted in the db.
* @param logicalDatastoreType - The logicalDatastoreType
*/
public void write(boolean isReplace,VnfList VnfList, LogicalDatastoreType logicalDatastoreType) throws Exception {
// Each entry will be identifiable by a unique key, we have to create that
// identifier
InstanceIdentifier.InstanceIdentifierBuilder<VnfList> VnfListBuilder = InstanceIdentifier
.<Vnfs>builder(Vnfs.class).child(VnfList.class, VnfList.key());
InstanceIdentifier<VnfList> path = VnfListBuilder.build();
WriteTransaction tx = dataBroker.newWriteOnlyTransaction();
if (!isReplace) {
tx.merge(logicalDatastoreType, path, VnfList);
} else {
tx.put(logicalDatastoreType, path, VnfList);
}
CheckedFuture<Void,TransactionCommitFailedException> cf = tx.submit();
cf.checkedGet();
}
}
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