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 HttpResponse httpResponse = httpClient.execute(createHttpPayload(caName, csr, encodedPk));
61 return extractCertServiceResponse(httpResponse);
63 } catch (IOException e) {
64 LOGGER.error(String.format("Failed on communication between client and API for URL: '%s' . Exception message: '%s'",
65 certServiceAddress + caName, e.getMessage()));
66 throw new HttpClientException(e);
70 private int getStatusCode(HttpResponse httpResponse) {
71 return httpResponse.getStatusLine().getStatusCode();
74 private CertServiceResponse extractCertServiceResponse(HttpResponse httpResponse)
75 throws CertServiceApiResponseException, IOException {
76 int httpResponseCode = getStatusCode(httpResponse);
77 if (HttpStatus.SC_OK != httpResponseCode) {
78 LOGGER.error(String.format("Error on API response. Response Code: %d", httpResponseCode));
79 throw generateApiResponseException(httpResponse);
81 String jsonResponse = getStringResponse(httpResponse.getEntity());
82 return gson.fromJson(jsonResponse, CertServiceResponse.class);
85 private String getStringResponse(HttpEntity httpEntity) throws IOException {
86 return EntityUtils.toString(httpEntity, CHARSET_UTF_8);
89 private HttpGet createHttpPayload(String caName, String csr, String pk) {
90 String url = certServiceAddress + caName;
91 HttpGet httpGet = new HttpGet(url);
92 httpGet.addHeader(CSR_HEADER_NAME, csr);
93 httpGet.addHeader(PK_HEADER_NAME, pk);
98 private CertServiceApiResponseException generateApiResponseException(HttpResponse httpResponse) throws IOException {
99 String stringResponse = getStringResponse(httpResponse.getEntity());
100 ErrorCertServiceResponse errorCertServiceResponse =
101 gson.fromJson(stringResponse, ErrorCertServiceResponse.class);
103 String messageFromApi = errorCertServiceResponse.getMessage();
104 String path = errorCertServiceResponse.getPath();
105 int httpResponseCode = getStatusCode(httpResponse);
107 return new CertServiceApiResponseException(certServiceAddress + path, httpResponseCode, messageFromApi);