fi.helsinki.opintoni.integration.coursepage.CoursePageRestClient.java Source code

Introduction

Here is the source code for fi.helsinki.opintoni.integration.coursepage.CoursePageRestClient.java

Source

/*
 * This file is part of MystudiesMyteaching application.
 *
 * MystudiesMyteaching application is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * MystudiesMyteaching application is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MystudiesMyteaching application.  If not, see <http://www.gnu.org/licenses/>.
 */

package fi.helsinki.opintoni.integration.coursepage;

import fi.helsinki.opintoni.cache.CacheConstants;
import fi.helsinki.opintoni.integration.DateFormatter;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Locale;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;

import static com.google.common.collect.Lists.newArrayList;

public class CoursePageRestClient implements CoursePageClient {

    private final String baseUrl;
    private final RestTemplate restTemplate;

    public CoursePageRestClient(String baseUrl, RestTemplate restTemplate) {
        this.baseUrl = baseUrl;
        this.restTemplate = restTemplate;
    }

    @Cacheable(CacheConstants.COURSE_PAGE_ONE_OFF_EVENTS)
    public List<CoursePageEvent> getEvents(String courseImplementationId) {
        ResponseEntity<List<CoursePageEvent>> responseEntity = restTemplate.exchange(
                "{baseUrl}/events?course_implementation_id={courseImplementationId}", HttpMethod.GET, null,
                new ParameterizedTypeReference<List<CoursePageEvent>>() {
                }, baseUrl, courseImplementationId);

        return Optional.ofNullable(responseEntity.getBody()).orElse(newArrayList());
    }

    @Cacheable(CacheConstants.COURSE_PAGE)
    public CoursePageCourseImplementation getCoursePage(String courseImplementationId) {
        return restTemplate
                .exchange("{baseUrl}/course_implementations?course_implementation_id={courseImplementationId}",
                        HttpMethod.GET, null, new ParameterizedTypeReference<CoursePageCourseImplementation>() {
                        }, baseUrl, courseImplementationId)
                .getBody();
    }

    @Override
    public List<CoursePageNotification> getCoursePageNotifications(Set<String> courseImplementationIds,
            LocalDateTime from, Locale locale) {
        if (courseImplementationIds.isEmpty()) {
            return newArrayList();
        }

        ResponseEntity<List<CoursePageNotification>> responseEntity = restTemplate.exchange(
                "{baseUrl}/course_implementation_activity"
                        + "?course_implementation_id={courseImplementationIds}&timestamp={from}&langcode={locale}",
                HttpMethod.GET, null, new ParameterizedTypeReference<List<CoursePageNotification>>() {
                }, baseUrl, courseImplementationIds.stream().collect(Collectors.joining(",")),
                from.format(DateFormatter.COURSE_PAGE_DATE_TIME_FORMATTER), locale.getLanguage());

        return Optional.ofNullable(responseEntity.getBody()).orElse(newArrayList());
    }

}