1 files changed, 127 insertions, 0 deletions
diff --git a/prh-aai-client/src/main/java/org/onap/dcaegen2/services/prh/service/AAIConsumerClient.java b/prh-aai-client/src/main/java/org/onap/dcaegen2/services/prh/service/AAIConsumerClient.java
new file mode 100644
index 00000000..7836a75d
--- /dev/null
+++ b/prh-aai-client/src/main/java/org/onap/dcaegen2/services/prh/service/AAIConsumerClient.java
@@ -0,0 +1,127 @@
+/*-
+ * ============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 org.apache.http.HttpEntity;
+import org.apache.http.client.ResponseHandler;
+import org.apache.http.client.methods.HttpGet;
+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.prh.config.AAIClientConfiguration;
+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.net.URI;
+import java.net.URISyntaxException;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+
+public class AAIConsumerClient {
+
+    Logger logger = LoggerFactory.getLogger(AAIConsumerClient.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 AAIConsumerClient(AAIClientConfiguration aaiClientConfiguration) {
+        closeableHttpClient = new AAIClientImpl(aaiClientConfiguration).getAAIHttpClient();
+        aaiHost = aaiClientConfiguration.aaiHost();
+        aaiProtocol = aaiClientConfiguration.aaiProtocol();
+        aaiHostPortNumber = aaiClientConfiguration.aaiHostPortNumber();
+        aaiPath = aaiClientConfiguration.aaiBasePath() + aaiClientConfiguration.aaiPnfPath();
+        aaiHeaders = aaiClientConfiguration.aaiHeaders();
+    }
+
+    public Optional<String> 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(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<String>> aaiResponseHandler() {
+        return httpResponse ->  {
+            final int 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.");
+                final String aaiResponse = EntityUtils.toString(responseEntity);
+                return Optional.of(aaiResponse);
+            } else {
+                String aaiResponse = responseEntity != null ? EntityUtils.toString(responseEntity) : "";
+                logger.warn("HTTP response not successful : {}", aaiResponse);
+                return Optional.of(String.valueOf(responseCode));
+            }
+        };
+    }
+
+    private HttpRequestBase createHttpRequest(URI extendedURI) {
+        return isExtendedURINotNull(extendedURI) ? new HttpGet(extendedURI) : null;
+    }
+
+    private Boolean isExtendedURINotNull(URI extendedURI) {
+        return extendedURI != null;
+    }
+
+    private Optional<HttpRequestBase> createRequest(ConsumerDmaapModel consumerDmaapModel) {
+        final URI extendedURI = createAAIExtendedURI(consumerDmaapModel.getPnfName());
+        HttpRequestBase request = createHttpRequest(extendedURI);
+        aaiHeaders.forEach(Objects.requireNonNull(request)::addHeader);
+        Objects.requireNonNull(request).addHeader("Content-Type", "application/json");
+        return Optional.of(request);
+    }
+}