package org.apache.failsafe.its.serviceloader.application;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import org.apache.failsafe.its.serviceloader.api.service.StudentService;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.ServiceLoader;


public class StudentServiceLoader {

    public StudentService getStudentService(){
        Optional<StudentService> studentService = ServiceLoader.load( StudentService.class ).findFirst();
        return studentService.orElseThrow(() -> {
            throw new RuntimeException( "Could not find StudentService implementation" );
        } );
    }

    public List<StudentService> getStudentServices(){
        ServiceLoader<StudentService> loader = ServiceLoader.load( StudentService.class );
        List<StudentService> studentServices = new ArrayList<>();
        for ( StudentService studentService : loader ) {
            studentServices.add(studentService);
        }
        return studentServices;
    }
}
