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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.service;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ResponseHandler;
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.config.AAIClientConfiguration;
import org.onap.dcaegen2.services.prh.model.CommonFunctions;
import org.onap.dcaegen2.services.prh.model.ConsumerDmaapModel;
import org.onap.dcaegen2.services.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.Map;
import java.util.Objects;
import java.util.Optional;
public class AAIProducerClient implements AAIExtendedHttpClient {
Logger logger = LoggerFactory.getLogger(AAIProducerClient.class);
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;
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();
}
@Override
public Optional<Integer> getHttpResponse(ConsumerDmaapModel consumerDmaapModel) throws IOException {
Optional<HttpRequestBase> request = createRequest(consumerDmaapModel);
try {
return closeableHttpClient.execute(request.get(), aaiResponseHandler());
} catch (IOException e) {
logger.warn("Exception while executing http client: ", e);
throw new IOException();
}
}
private URI createAAIExtendedURI(final String pnfName) {
URI extendedURI = null;
final URIBuilder uriBuilder = new URIBuilder()
.setScheme(aaiProtocol)
.setHost(aaiHost)
.setPort(aaiHostPortNumber)
.setPath(aaiPath + "/" + pnfName);
try {
extendedURI = uriBuilder.build();
logger.trace("Building extended URI: {}", extendedURI);
} catch (URISyntaxException e) {
logger.warn("Exception while building extended URI: ", e);
}
return extendedURI;
}
private ResponseHandler<Optional<Integer>> aaiResponseHandler() {
return (HttpResponse httpResponse) -> {
final Integer responseCode = httpResponse.getStatusLine().getStatusCode();
logger.trace("Status code of operation: {}", responseCode);
final HttpEntity responseEntity = httpResponse.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);
}
};
}
private HttpRequestBase createHttpRequest(URI extendedURI, ConsumerDmaapModel consumerDmaapModel) {
String jsonBody = CommonFunctions.createJsonBody(consumerDmaapModel);
if (isExtendedURINotNull(extendedURI) && jsonBody != null && !"".equals(jsonBody)) {
return createHttpPatch(extendedURI, Optional.ofNullable(CommonFunctions.createJsonBody(consumerDmaapModel)));
} else {
return null;
}
}
private Boolean isExtendedURINotNull(URI extendedURI) {
return extendedURI != null;
}
private Optional<StringEntity> createStringEntity(Optional<String> jsonBody) {
return Optional.of(parseJson(jsonBody).get());
}
private HttpPatch createHttpPatch(URI extendedURI, Optional<String> jsonBody) {
HttpPatch httpPatch = new HttpPatch(extendedURI);
Optional<StringEntity> stringEntity = createStringEntity(jsonBody);
httpPatch.setEntity(stringEntity.get());
return httpPatch;
}
private Optional<StringEntity> parseJson(Optional<String> jsonBody) {
Optional<StringEntity> stringEntity = Optional.empty();
try {
stringEntity = Optional.of(new StringEntity(jsonBody.get()));
} catch (UnsupportedEncodingException e) {
logger.warn("Exception while parsing JSON: ", e);
}
return stringEntity;
}
private Optional<HttpRequestBase> createRequest(ConsumerDmaapModel consumerDmaapModel) {
final URI extendedURI = createAAIExtendedURI(consumerDmaapModel.getPnfName());
HttpRequestBase request = createHttpRequest(extendedURI, consumerDmaapModel);
aaiHeaders.forEach(Objects.requireNonNull(request)::addHeader);
Objects.requireNonNull(request).addHeader("Content-Type", "application/merge-patch+json");
return Optional.of(request);
}
}
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