2 * ============LICENSE_START=======================================================
3 * ONAP : ccsdk features
4 * ================================================================================
5 * Copyright (C) 2020 highstreet technologies GmbH Intellectual Property.
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END=========================================================
22 package org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.impl.mdsal;
24 import com.google.common.base.Preconditions;
25 import java.util.Optional;
26 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
27 import org.opendaylight.mdsal.dom.api.DOMService;
30 * Collecting utilities for mdsal api
32 public class MdsalApi {
34 * Get mountpoint service and throw exception if not available
36 * @param mountPoint getting the service from
37 * @param service class to request
38 * @return service requested or throw
39 * @throws IllegalStateException
41 public static <T extends DOMService> T getMountpointService(final DOMMountPoint mountPoint, final Class<T> service) {
42 final Optional<T> optional = mountPoint.getService(service);
43 Preconditions.checkState(optional.isPresent(), "Service not present on mount point: %s", service.getName());
44 return optional.get();