1 files changed, 162 insertions, 0 deletions
diff --git a/prh-aai-client/src/main/java/org/onap/dcaegen2/services/service/AAIExtendedHttpClientImpl.java b/prh-aai-client/src/main/java/org/onap/dcaegen2/services/service/AAIExtendedHttpClientImpl.java
new file mode 100644
index 00000000..133a537e
--- /dev/null
+++ b/prh-aai-client/src/main/java/org/onap/dcaegen2/services/service/AAIExtendedHttpClientImpl.java
@@ -0,0 +1,162 @@
+/*-
+ * ============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.commons.lang3.StringUtils;
+import org.apache.http.HttpEntity;
+import org.apache.http.client.ResponseHandler;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPut;
+import org.apache.http.client.methods.HttpRequestBase;
+import org.apache.http.client.utils.URIBuilder;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.util.EntityUtils;
+import org.onap.dcaegen2.services.config.AAIHttpClientConfiguration;
+import org.onap.dcaegen2.services.utils.HttpRequestDetails;
+import org.onap.dcaegen2.services.utils.HttpUtils;
+import org.onap.dcaegen2.services.utils.RequestVerbs;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import javax.annotation.Nonnull;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Optional;
+
+public class AAIExtendedHttpClientImpl implements AAIExtendedHttpClient {
+
+    Logger logger = LoggerFactory.getLogger(AAIExtendedHttpClientImpl.class);
+
+    private final CloseableHttpClient closeableHttpClient;
+    private final String aaiHost;
+    private final String aaiProtocol;
+    private final Integer aaiHostPortNumber;
+
+    @Autowired
+    public AAIExtendedHttpClientImpl (AAIHttpClientConfiguration aaiHttpClientConfiguration) {
+        final AAIHttpClient aaiHttpClient = new AAIHttpClientImpl(aaiHttpClientConfiguration);
+        closeableHttpClient = aaiHttpClient.getAAIHttpClient();
+        aaiHost = aaiHttpClientConfiguration.aaiHost();
+        aaiProtocol = aaiHttpClientConfiguration.aaiProtocol();
+        aaiHostPortNumber = aaiHttpClientConfiguration.aaiHostPortNumber();
+    }
+
+    @Override
+    public Optional<String> getHttpResponse(HttpRequestDetails httpRequestDetails) {
+
+        Optional<String> extendedDetails = Optional.empty();
+
+        final URI extendedURI = createAAIExtendedURI(httpRequestDetails.aaiAPIPath(),
+                httpRequestDetails.queryParameters());
+        final HttpRequestBase request = createHttpRequest(extendedURI, httpRequestDetails);
+
+        if (request == null) {
+            return Optional.empty();
+        }
+
+        for (Map.Entry<String, String> headersEntry : httpRequestDetails.headers().entrySet()) {
+            request.addHeader(headersEntry.getKey(), headersEntry.getValue());
+        }
+
+        try {
+            extendedDetails = closeableHttpClient.execute(request, aaiResponseHandler());
+        } catch (IOException e) {
+            logger.error("Exception while executing HTTP request: {}", e);
+        }
+
+        if (extendedDetails.isPresent()) {
+            return extendedDetails;
+        } else {
+            return Optional.empty();
+        }
+    }
+
+    private URI createAAIExtendedURI(final String path, Map<String, String> queryParams) {
+        URI extendedURI = null;
+
+        final URIBuilder uriBuilder = new URIBuilder().setScheme(this.aaiProtocol).setHost(this.aaiHost)
+                .setPort(this.aaiHostPortNumber)
+                .setPath(path);
+        final String customQuery = createCustomQuery(queryParams);
+
+        if (StringUtils.isNoneBlank(customQuery)) {
+            uriBuilder.setCustomQuery(customQuery);
+        }
+
+        try {
+            logger.info("Building extended URI");
+            extendedURI = uriBuilder.build();
+        } catch (URISyntaxException e) {
+            logger.error("Exception while building extended URI: {}", e);
+        }
+
+        return extendedURI;
+    }
+
+    private String createCustomQuery(@Nonnull final Map<String, String> queryParams) {
+        final StringBuilder queryStringBuilder = new StringBuilder("");
+        final Iterator<Map.Entry<String, String>> queryParamIterator = queryParams.entrySet().iterator();
+
+        while (queryParamIterator.hasNext()) {
+            final Map.Entry<String, String> queryParamsEntry = queryParamIterator.next();
+            queryStringBuilder.append(queryParamsEntry.getKey()).append("=").append(queryParamsEntry.getValue());
+            if (queryParamIterator.hasNext()) {
+                queryStringBuilder.append("&");
+            }
+        }
+
+        return queryStringBuilder.toString();
+    }
+
+    private ResponseHandler<Optional<String>> aaiResponseHandler() {
+        return httpResponse ->  {
+            final int responseCode = httpResponse.getStatusLine().getStatusCode();
+            final HttpEntity responseEntity = httpResponse.getEntity();
+
+            if (HttpUtils.isSuccessfulResponseCode(responseCode) && responseEntity != null) {
+                logger.info("HTTP response successful.");
+                final String aaiResponse = EntityUtils.toString(responseEntity);
+                return Optional.of(aaiResponse);
+            } else {
+                String aaiResponse = responseEntity != null ? EntityUtils.toString(responseEntity) : "";
+                logger.error("HTTP response not successful : {}", aaiResponse);
+                return Optional.empty();
+            }
+        };
+    }
+
+    private HttpRequestBase createHttpRequest(URI extendedURI, HttpRequestDetails httpRequestDetails) {
+        if (isExtendedURINotNull(extendedURI) && (httpRequestDetails.requestVerb().equals(RequestVerbs.GET))) {
+            return new HttpGet(extendedURI);
+        } else if (isExtendedURINotNull(extendedURI) && (httpRequestDetails.requestVerb().equals(RequestVerbs.PUT))) {
+            return new HttpPut(extendedURI);
+        } else {
+            return null;
+        }
+    }
+
+    private Boolean isExtendedURINotNull(URI extendedURI) {
+        return extendedURI != null ? true : false;
+    }
+}