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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* 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.pnfsimulator.simulator.client;
import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.util.EntityUtils;
import org.onap.pnfsimulator.simulator.client.utils.ssl.HttpClientFactoryFacade;
import org.onap.pnfsimulator.simulator.client.utils.ssl.SslAuthenticationHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.StandardCharsets;
import java.security.GeneralSecurityException;
import java.util.UUID;
import static org.onap.pnfsimulator.logging.MdcVariables.REQUEST_ID;
import static org.onap.pnfsimulator.logging.MdcVariables.X_INVOCATION_ID;
import static org.onap.pnfsimulator.logging.MdcVariables.X_ONAP_REQUEST_ID;
public class HttpClientAdapterImpl implements HttpClientAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(HttpClientAdapterImpl.class);
private static final String CONTENT_TYPE = "Content-Type";
private static final String APPLICATION_JSON = "application/json";
private static final Marker INVOKE = MarkerFactory.getMarker("INVOKE");
private static final HttpApacheResponseAdapterFactory responseFactory = new HttpApacheResponseAdapterFactory();
private final HttpClient client;
private final String targetUrl;
public HttpClientAdapterImpl(String targetUrl, SslAuthenticationHelper sslAuthenticationHelper)
throws IOException, GeneralSecurityException {
this.client = HttpClientFactoryFacade.create(targetUrl, sslAuthenticationHelper);
this.targetUrl = targetUrl;
}
HttpClientAdapterImpl(HttpClient client, String targetUrl) {
this.client = client;
this.targetUrl = targetUrl;
}
@Override
public HttpResponseAdapter send(String content) {
HttpResponseAdapter vesResponse;
try {
HttpResponse response = sendAndRetrieve(content);
LOGGER.info(INVOKE, "Message sent, ves response code: {}", response.getStatusLine());
vesResponse = responseFactory.create(response);
EntityUtils.consumeQuietly(response.getEntity()); //response has to be fully consumed otherwise apache won't release connection
} catch (IOException | URISyntaxException e) {
LOGGER.warn("Error sending message to ves: {}", e.getMessage(), e.getCause());
vesResponse = new HttpResponseAdapter(421, String.format("Fail to connect with ves: %s", e.getMessage()));
}
return vesResponse;
}
private HttpResponse sendAndRetrieve(String content) throws IOException, URISyntaxException {
HttpPost request = createRequest(content);
HttpResponse httpResponse = client.execute(request);
request.releaseConnection();
return httpResponse;
}
private HttpPost createRequest(String content) throws UnsupportedEncodingException, URISyntaxException {
LOGGER.info("sending request using address: {}", this.targetUrl);
URI targetAddress = new URI(this.targetUrl);
HttpPost request = new HttpPost(targetAddress);
if(urlContainsUserInfo(targetAddress)) {
request.addHeader(HttpHeaders.AUTHORIZATION, getAuthenticationHeaderForUser(targetAddress.getUserInfo()));
}
StringEntity stringEntity = new StringEntity(content);
request.addHeader(CONTENT_TYPE, APPLICATION_JSON);
request.addHeader(X_ONAP_REQUEST_ID, MDC.get(REQUEST_ID));
request.addHeader(X_INVOCATION_ID, UUID.randomUUID().toString());
request.setEntity(stringEntity);
return request;
}
private boolean urlContainsUserInfo(URI targetAddress) {
return targetAddress.getUserInfo() != null && !targetAddress.getUserInfo().isEmpty();
}
private String getAuthenticationHeaderForUser(String userInfo) {
final byte[] encodedUserInfo = Base64.encodeBase64(
userInfo.getBytes(StandardCharsets.ISO_8859_1)
);
return String.format("Basic %s", new String(encodedUserInfo));
}
}
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