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/*-
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA Intellectual Property. 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.dcaegen2.services.prh.service;
import java.util.function.Predicate;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPatch;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;
import org.onap.dcaegen2.services.prh.config.AAIClientConfiguration;
import org.onap.dcaegen2.services.prh.model.CommonFunctions;
import org.onap.dcaegen2.services.prh.model.ConsumerDmaapModel;
import org.onap.dcaegen2.services.prh.model.utils.HttpUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Base64;
import java.util.Map;
import java.util.Optional;
public class AAIProducerClient implements AAIExtendedHttpClient {
private static final String EXCEPTION_MESSAGE = "Exception while executing http client: ";
private static Predicate<String> isEmpty = String::isEmpty;
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final CloseableHttpClient closeableHttpClient;
private final String aaiHost;
private final String aaiProtocol;
private final Integer aaiHostPortNumber;
private final String aaiPath;
private final Map<String, String> aaiHeaders;
private final String aaiUserName;
private final String aaiUserPassword;
public AAIProducerClient(AAIClientConfiguration aaiClientConfiguration) {
closeableHttpClient = new AAIClientImpl(aaiClientConfiguration).getAAIHttpClient();
aaiHost = aaiClientConfiguration.aaiHost();
aaiProtocol = aaiClientConfiguration.aaiProtocol();
aaiHostPortNumber = aaiClientConfiguration.aaiHostPortNumber();
aaiPath = aaiClientConfiguration.aaiBasePath() + aaiClientConfiguration.aaiPnfPath();
aaiHeaders = aaiClientConfiguration.aaiHeaders();
aaiUserName = aaiClientConfiguration.aaiUserName();
aaiUserPassword = aaiClientConfiguration.aaiUserPassword();
}
@Override
public Optional<Integer> getHttpResponse(ConsumerDmaapModel consumerDmaapModel) throws URISyntaxException {
return createRequest(consumerDmaapModel).flatMap(httpRequestBase -> {
try {
return closeableHttpClient.execute(httpRequestBase, this::handleResponse);
} catch (IOException e) {
logger.warn(EXCEPTION_MESSAGE, e);
return Optional.empty();
}
});
}
private Optional<HttpRequestBase> createRequest(ConsumerDmaapModel consumerDmaapModel) throws URISyntaxException {
final URI extendedURI = createAAIExtendedURI(consumerDmaapModel.getPnfName());
return createHttpRequest(extendedURI, consumerDmaapModel);
}
private URI createAAIExtendedURI(final String pnfName) throws URISyntaxException {
return new URIBuilder()
.setScheme(aaiProtocol)
.setHost(aaiHost)
.setPort(aaiHostPortNumber)
.setPath(aaiPath + "/" + pnfName).build();
}
Optional<HttpRequestBase> createHttpRequest(URI extendedURI, ConsumerDmaapModel consumerDmaapModel) {
return Optional.ofNullable(CommonFunctions.createJsonBody(consumerDmaapModel)).filter(isEmpty.negate())
.flatMap(myJson -> {
try {
logger.info("AAI: sending json {}", myJson);
return Optional.of(createHttpPatch(extendedURI, myJson));
} catch (UnsupportedEncodingException e) {
logger.warn(EXCEPTION_MESSAGE, e);
}
return Optional.empty();
});
}
HttpPatch createHttpPatch(URI extendedURI, String jsonBody) throws UnsupportedEncodingException {
HttpPatch httpPatch = new HttpPatch(extendedURI);
httpPatch.setEntity(new StringEntity(jsonBody));
aaiHeaders.forEach(httpPatch::addHeader);
httpPatch.addHeader("Content-Type", "application/merge-patch+json");
httpPatch.addHeader("Authorization", "Basic " + encode());
return httpPatch;
}
String encode() throws UnsupportedEncodingException {
return Base64.getEncoder().encodeToString((this.aaiUserName + ":" + this.aaiUserPassword)
.getBytes("UTF-8"));
}
Optional<Integer> handleResponse(HttpResponse response) throws IOException {
final Integer responseCode = response.getStatusLine().getStatusCode();
logger.info("Status code of operation: {}", responseCode);
final HttpEntity responseEntity = response.getEntity();
if (HttpUtils.isSuccessfulResponseCode(responseCode)) {
logger.trace("HTTP response successful.");
return Optional.of(responseCode);
} else {
String aaiResponse = responseEntity != null ? EntityUtils.toString(responseEntity) : "";
logger.warn("HTTP response not successful : {}", aaiResponse);
return Optional.of(responseCode);
}
}
}
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