diff options
Diffstat (limited to 'certServiceClient/src/main/java/org/onap/aaf/certservice/client/httpclient/HttpClient.java')
-rw-r--r-- | certServiceClient/src/main/java/org/onap/aaf/certservice/client/httpclient/HttpClient.java | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/certServiceClient/src/main/java/org/onap/aaf/certservice/client/httpclient/HttpClient.java b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/httpclient/HttpClient.java new file mode 100644 index 00000000..603d5848 --- /dev/null +++ b/certServiceClient/src/main/java/org/onap/aaf/certservice/client/httpclient/HttpClient.java @@ -0,0 +1,109 @@ +/* + * ============LICENSE_START======================================================= + * aaf-certservice-client + * ================================================================================ + * Copyright (C) 2020 Nokia. All rights reserved. + * ================================================================================ + * Licensed 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. + * ============LICENSE_END========================================================= + */ + +package org.onap.aaf.certservice.client.httpclient; + +import com.google.gson.Gson; +import org.apache.http.HttpEntity; +import org.apache.http.HttpResponse; +import org.apache.http.HttpStatus; +import org.apache.http.client.methods.HttpGet; +import org.apache.http.impl.client.CloseableHttpClient; +import org.apache.http.util.EntityUtils; +import org.onap.aaf.certservice.client.httpclient.exception.CertServiceApiResponseException; +import org.onap.aaf.certservice.client.httpclient.exception.HttpClientException; +import org.onap.aaf.certservice.client.httpclient.model.CertServiceResponse; +import org.onap.aaf.certservice.client.httpclient.model.ErrorCertServiceResponse; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; + +public class HttpClient { + + private static final String CSR_HEADER_NAME = "CSR"; + private static final String PK_HEADER_NAME = "PK"; + private static final String CHARSET_UTF_8 = "UTF-8"; + + private final Logger LOGGER = LoggerFactory.getLogger(HttpClient.class); + + private final Gson gson = new Gson(); + private final CloseableHttpClientProvider httpClientProvider; + private final String certServiceAddress; + + public HttpClient(CloseableHttpClientProvider httpClientProvider, String certServiceAddress) { + this.httpClientProvider = httpClientProvider; + this.certServiceAddress = certServiceAddress; + } + + public CertServiceResponse retrieveCertServiceData(String caName, String csr, String encodedPk) + throws CertServiceApiResponseException, HttpClientException { + + try (CloseableHttpClient httpClient = httpClientProvider.getClient()) { + HttpResponse httpResponse = httpClient.execute(createHttpPayload(caName, csr, encodedPk)); + return extractCertServiceResponse(httpResponse); + + } catch (IOException e) { + LOGGER.error(String.format("Failed on communication between client and API for URL: '%s' . Exception message: '%s'", + certServiceAddress + caName, e.getMessage())); + throw new HttpClientException(e); + } + } + + private int getStatusCode(HttpResponse httpResponse) { + return httpResponse.getStatusLine().getStatusCode(); + } + + private CertServiceResponse extractCertServiceResponse(HttpResponse httpResponse) + throws CertServiceApiResponseException, IOException { + int httpResponseCode = getStatusCode(httpResponse); + if (HttpStatus.SC_OK != httpResponseCode) { + LOGGER.error(String.format("Error on API response. Response Code: %d", httpResponseCode)); + throw generateApiResponseException(httpResponse); + } + String jsonResponse = getStringResponse(httpResponse.getEntity()); + return gson.fromJson(jsonResponse, CertServiceResponse.class); + } + + private String getStringResponse(HttpEntity httpEntity) throws IOException { + return EntityUtils.toString(httpEntity, CHARSET_UTF_8); + } + + private HttpGet createHttpPayload(String caName, String csr, String pk) { + String url = certServiceAddress + caName; + HttpGet httpGet = new HttpGet(url); + httpGet.addHeader(CSR_HEADER_NAME, csr); + httpGet.addHeader(PK_HEADER_NAME, pk); + return httpGet; + } + + + private CertServiceApiResponseException generateApiResponseException(HttpResponse httpResponse) throws IOException { + String stringResponse = getStringResponse(httpResponse.getEntity()); + ErrorCertServiceResponse errorCertServiceResponse = + gson.fromJson(stringResponse, ErrorCertServiceResponse.class); + + String messageFromApi = errorCertServiceResponse.getMessage(); + String path = errorCertServiceResponse.getPath(); + int httpResponseCode = getStatusCode(httpResponse); + + return new CertServiceApiResponseException(certServiceAddress + path, httpResponseCode, messageFromApi); + } +} |