2 * ============LICENSE_START=======================================================
3 * aaf-certservice-client
4 * ================================================================================
5 * Copyright (C) 2020 Nokia. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.aaf.certservice.client.httpclient;
23 import com.google.gson.Gson;
24 import org.apache.http.HttpEntity;
25 import org.apache.http.HttpResponse;
26 import org.apache.http.HttpStatus;
27 import org.apache.http.client.methods.HttpGet;
28 import org.apache.http.impl.client.CloseableHttpClient;
29 import org.apache.http.util.EntityUtils;
30 import org.onap.aaf.certservice.client.httpclient.exception.CertServiceApiResponseException;
31 import org.onap.aaf.certservice.client.httpclient.exception.HttpClientException;
32 import org.onap.aaf.certservice.client.httpclient.model.CertServiceResponse;
33 import org.onap.aaf.certservice.client.httpclient.model.ErrorCertServiceResponse;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
37 import java.io.IOException;
39 public class HttpClient {
41 private static final String CSR_HEADER_NAME = "CSR";
42 private static final String PK_HEADER_NAME = "PK";
43 private static final String CHARSET_UTF_8 = "UTF-8";
45 private final Logger LOGGER = LoggerFactory.getLogger(HttpClient.class);
47 private final Gson gson = new Gson();
48 private final CloseableHttpClientProvider httpClientProvider;
49 private final String certServiceAddress;
51 public HttpClient(CloseableHttpClientProvider httpClientProvider, String certServiceAddress) {
52 this.httpClientProvider = httpClientProvider;
53 this.certServiceAddress = certServiceAddress;
56 public CertServiceResponse retrieveCertServiceData(String caName, String csr, String encodedPk)
57 throws CertServiceApiResponseException, HttpClientException {
59 try (CloseableHttpClient httpClient = httpClientProvider.getClient()) {
60 LOGGER.info("Sending request to API. Url: {}{} ", certServiceAddress, caName);
61 HttpResponse httpResponse = httpClient.execute(createHttpRequest(caName, csr, encodedPk));
62 LOGGER.info("Received response from API");
63 return extractCertServiceResponse(httpResponse);
65 } catch (IOException e) {
66 LOGGER.error("Failed execute request to API for URL: {}{} . Exception message: {}",
67 certServiceAddress, caName, e.getMessage());
68 throw new HttpClientException(e);
72 private int getStatusCode(HttpResponse httpResponse) {
73 return httpResponse.getStatusLine().getStatusCode();
76 private CertServiceResponse extractCertServiceResponse(HttpResponse httpResponse)
77 throws CertServiceApiResponseException, HttpClientException {
78 int httpResponseCode = getStatusCode(httpResponse);
79 if (HttpStatus.SC_OK != httpResponseCode) {
80 LOGGER.error("Error on API response. Response Code: {}", httpResponseCode);
81 throw generateApiResponseException(httpResponse);
83 String jsonResponse = getStringResponse(httpResponse.getEntity());
84 return gson.fromJson(jsonResponse, CertServiceResponse.class);
87 private String getStringResponse(HttpEntity httpEntity) throws HttpClientException {
89 return EntityUtils.toString(httpEntity, CHARSET_UTF_8);
90 } catch (IOException e) {
91 LOGGER.error("Cannot parse response to string", e);
92 throw new HttpClientException(e);
96 private HttpGet createHttpRequest(String caName, String csr, String pk) {
97 String url = certServiceAddress + caName;
98 HttpGet httpGet = new HttpGet(url);
99 httpGet.addHeader(CSR_HEADER_NAME, csr);
100 httpGet.addHeader(PK_HEADER_NAME, pk);
105 private CertServiceApiResponseException generateApiResponseException(HttpResponse httpResponse)
106 throws HttpClientException {
107 String stringResponse = getStringResponse(httpResponse.getEntity());
108 ErrorCertServiceResponse errorCertServiceResponse =
109 gson.fromJson(stringResponse, ErrorCertServiceResponse.class);
111 String messageFromApi = errorCertServiceResponse.getMessage();
112 String path = errorCertServiceResponse.getPath();
113 int httpResponseCode = getStatusCode(httpResponse);
115 return new CertServiceApiResponseException(certServiceAddress + path, httpResponseCode, messageFromApi);