1 files changed, 90 insertions, 0 deletions
diff --git a/src/main/java/org/onap/nbi/apis/hub/ExtApiClientForHub.java b/src/main/java/org/onap/nbi/apis/hub/ExtApiClientForHub.java
new file mode 100644
index 0000000..10d6f7c
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+++ b/src/main/java/org/onap/nbi/apis/hub/ExtApiClientForHub.java
@@ -0,0 +1,90 @@
+/**
+ *     Copyright (c) 2019 Amdocs
+ *
+ *     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.
+ */
+package org.onap.nbi.apis.hub;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.onap.nbi.apis.hub.model.Subscription;
+import org.onap.nbi.exceptions.BackendFunctionalException;
+import org.onap.nbi.exceptions.TechnicalException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.*;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.ResourceAccessException;
+import org.springframework.web.client.RestTemplate;
+
+@Service
+public class ExtApiClientForHub {
+
+    @Autowired
+    RestTemplate restTemplate;
+
+    @Value("${external.nbi.url}")
+    private String externalNbiUrl;
+
+    @Value("${nbi.url}")
+    private String nbiUrl;
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ExtApiClientForHub.class);
+
+    private static final ObjectMapper mapper = new ObjectMapper();
+
+    public ResponseEntity<Object> postEventSubscription(Subscription subscription, String targetURL) {
+        try {
+
+
+            String url = externalNbiUrl.replace("{targetUrl}", targetURL) + "/hub";
+            LOGGER.debug("Sending create event notification request to " + url);
+            String nbiListenerUrl = nbiUrl + "/listener";
+            subscription.setCallback(nbiListenerUrl);
+            String subscriptionAsBody = mapper.writeValueAsString(subscription);
+            ResponseEntity<Object> response = postRequest(url, subscriptionAsBody, buildRequestHeaders());
+            LOGGER.info("Received response from " + targetURL + "with status : " + response.getStatusCode());
+            LOGGER.debug("Response Body: " + response.getBody());
+            return response;
+        }catch(JsonProcessingException ex) {
+            LOGGER.error("error occurred while parsing service order to Json: " + ex);
+            throw new TechnicalException("error occurred while parsing service order to Json:"+ HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    private HttpHeaders buildRequestHeaders() {
+        HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.add("Accept", "application/json");
+        httpHeaders.add("Content-Type", "application/json");
+        return httpHeaders;
+    }
+
+
+    private ResponseEntity<Object> postRequest(String url, String body, HttpHeaders httpHeaders) {
+        try {
+            ResponseEntity<Object> response = restTemplate.exchange(url, HttpMethod.POST, new HttpEntity<>(body, httpHeaders), Object.class);
+            return response;
+        }catch(BackendFunctionalException ex) {
+            LOGGER.error("error on calling " + url + " ," + ex);
+            return new ResponseEntity<>("problem calling onap services", ex.getHttpStatus());
+        }catch (ResourceAccessException ex) {
+            LOGGER.error("error on calling " + url + " ," + ex);
+            return new ResponseEntity<>("unable to reach onap services", HttpStatus.INTERNAL_SERVER_ERROR);
+
+        }
+
+    }
+}
+