1 /*
2 * Copyright (c) 2023. Roland T. Lichti, Kaiserpfalz EDV-Service.
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17
18 package de.kaiserpfalzedv.services.eansearch.mapper;
19
20 import org.springframework.stereotype.Service;
21
22 import feign.Response;
23 import feign.codec.ErrorDecoder;
24
25 /**
26 * <p>ResponseErrorMapper -- Filters for HTTP Status codes of the API</p>
27 *
28 * <p>The status codes are documented in the
29 * <a href="https://www.ean-search.org/premium/ean-api.html#__RefHeading___Toc147_3132899627">EAN-Search documentation,
30 * Appendix A</a>. This mapper maps them to the runtime exceptions for a better handling.</p>
31 *
32 * @author klenkes74 {@literal <rlichti@kaiserpfalz-edv.de>}
33 * @since 3.0.0 2023-01-17
34 */
35 @Service
36 public class ResponseErrorMapper implements ErrorDecoder {
37 public static final int INVALID_OPERATION = 400;
38 public static final int INVALID_ACCESS_TOKEN = 401;
39 public static final int REQUEST_LIMIT_REACHED = 402;
40 public static final int INVALID_HTTP_METHOD = 405;
41 public static final int RATE_LIMIT_REACHED = 429;
42
43 @Override
44 public EanSearchException decode(final String methodKey, final Response response) {
45 return switch (response.status()) {
46 case INVALID_OPERATION -> new EanSearchInvalidOperationException();
47 case INVALID_ACCESS_TOKEN -> new EanSearchInvalidAccessTokenException();
48 case REQUEST_LIMIT_REACHED -> new EanSearchRequestLimitReachedException();
49 case INVALID_HTTP_METHOD -> new EanSearchWrongHTTPMethodException();
50 case RATE_LIMIT_REACHED -> new EanSearchTooManyRequestsException();
51 default -> null;
52 };
53
54 }
55 }