001/*
002 * Copyright 2023 the original author or authors.
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * https://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package de.cuioss.portal.restclient;
017
018import de.cuioss.uimodel.service.OptionalService;
019import de.cuioss.uimodel.service.ServiceState;
020import lombok.RequiredArgsConstructor;
021
022/**
023 * Wraps a concrete rest client implementation of T and provides some
024 * convenience methods.
025 *
026 * @author Matthias Walliczek
027 */
028@RequiredArgsConstructor
029public class RestClientHolder<T> implements OptionalService {
030
031    private final T restClient;
032
033    /**
034     * @return the REST client
035     * @throws IllegalStateException if service is not available
036     */
037    public T get() {
038        if (isServiceAvailable()) {
039            return restClient;
040        }
041        throw new IllegalStateException("Service not available");
042    }
043
044    @Override
045    public ServiceState getServiceState() {
046        return null != restClient ? ServiceState.ACTIVE : ServiceState.NOT_CONFIGURED;
047    }
048}