Initial commit for AAI-UI(sparky-backend)

Change-Id: I785397ed4197663cdf0c1351041d2f708ed08763
Signed-off-by: ARULNA <arul.nambi@amdocs.com>

1 files changed, 223 insertions, 0 deletions

diff --git a/src/main/java/org/openecomp/sparky/inventory/servlet/GeoVisualizationServlet.java b/src/main/java/org/openecomp/sparky/inventory/servlet/GeoVisualizationServlet.java
new file mode 100644
index 0000000..cf6e0f2
--- /dev/null
+++ b/src/main/java/org/openecomp/sparky/inventory/servlet/GeoVisualizationServlet.java
@@ -0,0 +1,223 @@
+/**
+ * ============LICENSE_START===================================================
+ * SPARKY (AAI UI service)
+ * ============================================================================
+ * Copyright © 2017 AT&T Intellectual Property.
+ * Copyright © 2017 Amdocs
+ * 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=====================================================
+ *
+ * ECOMP and OpenECOMP are trademarks
+ * and service marks of AT&T Intellectual Property.
+ */
+
+package org.openecomp.sparky.inventory.servlet;
+
+import org.openecomp.cl.mdc.MdcContext;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.nio.ByteBuffer;
+import java.security.SecureRandom;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.openecomp.cl.api.Logger;
+import org.openecomp.cl.eelf.LoggerFactory;
+import org.openecomp.sparky.logging.AaiUiMsgs;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.openecomp.sparky.dal.elasticsearch.SearchAdapter;
+import org.openecomp.sparky.dal.elasticsearch.config.ElasticSearchConfig;
+import org.openecomp.sparky.dal.rest.OperationResult;
+import org.openecomp.sparky.dal.rest.RestClientBuilder;
+import org.openecomp.sparky.util.NodeUtils;
+import org.openecomp.sparky.util.ServletUtils;
+
+/**
+ * The Class GeoVisualizationServlet.
+ */
+public class GeoVisualizationServlet extends HttpServlet {
+
+  private static final Logger LOG =
+      LoggerFactory.getInstance().getLogger(GeoVisualizationServlet.class);
+
+  private static final long serialVersionUID = 1L;
+
+  private SearchAdapter search = null;
+  private ElasticSearchConfig elasticConfig = null;
+  private ObjectMapper mapper;
+
+  private static final String SEARCH_STRING = "_search";
+
+  private static final String SEARCH_PARAMETER =
+      "?filter_path=hits.hits._source&_source=location&size=5000&q=entityType:";
+
+  /**
+   * Instantiates a new geo visualization servlet.
+   *
+   * @throws ServletException the servlet exception
+   */
+  public GeoVisualizationServlet() throws ServletException {
+    init();
+  }
+
+  /* (non-Javadoc)
+   * @see javax.servlet.GenericServlet#init()
+   */
+  @Override
+  public void init() throws ServletException {
+    super.init();
+    try {
+      if (elasticConfig == null) {
+        elasticConfig = ElasticSearchConfig.getConfig();
+      }
+      if (search == null) {
+        search = new SearchAdapter();
+      }
+      this.mapper = new ObjectMapper();
+    } catch (Exception exc) {
+      new ServletException(
+          "Caught an exception while getting an instance of servlet configuration.", exc);
+    }
+  }
+
+  public void setSearch(SearchAdapter search) {
+    this.search = search;
+  }
+
+  public void setElasticConfig(ElasticSearchConfig elasticConfig) {
+    this.elasticConfig = elasticConfig;
+  }
+
+  /* (non-Javadoc)
+   * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
+   */
+  @Override
+  protected void doGet(HttpServletRequest request, HttpServletResponse response)
+      throws ServletException, IOException {
+	  String txnID = request.getHeader("X-TransactionId");
+	    if (txnID == null){
+	      txnID = NodeUtils.getRandomTxnId();
+	    }
+	      
+	  String partnerName = request.getHeader("X-FromAppId");
+	  if ( partnerName == null)
+	    partnerName = "Browser";
+	          
+	  MdcContext.initialize(txnID, "AAI-UI", "", partnerName,
+	                request.getRemoteAddr());
+	    
+    OperationResult operationResult = null;
+    try {
+      operationResult = getGeoVisualizationResults(response, request.getParameter("entity"));
+    } catch (Exception exc) {
+      LOG.error(AaiUiMsgs.ERROR_PROCESSING_REQUEST, exc);
+    }
+  }
+
+  /* (non-Javadoc)
+   * @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
+   */
+  @Override
+  protected void doPost(HttpServletRequest request, HttpServletResponse response)
+      throws ServletException {
+
+  }
+
+  /**
+   * Gets the geo visualization results.
+   *
+   * @param response the response
+   * @param entityType the entity type
+   * @return the geo visualization results
+   * @throws Exception the exception
+   */
+  protected OperationResult getGeoVisualizationResults(HttpServletResponse response,
+      String entityType) throws Exception {
+    OperationResult operationResult = new OperationResult();
+
+    String parameters = SEARCH_PARAMETER + entityType;
+    String requestString = String.format("/%s/%s/%s", elasticConfig.getTopographicalSearchIndex(),
+        SEARCH_STRING, parameters);
+
+    try {
+      final String fullUrlStr = ServletUtils.getFullUrl(elasticConfig, requestString);
+      OperationResult opResult = ServletUtils.executeGetQuery(LOG, search, response, fullUrlStr);
+
+      JSONObject finalOutputJson = formatOutput(opResult.getResult());
+
+      if (finalOutputJson != null) {
+        response.setContentType("application/json");
+        PrintWriter out = response.getWriter();
+        out.println(finalOutputJson);
+        out.close();
+      }
+
+    } catch (JsonProcessingException exc) {
+      ServletUtils.handleSearchServletErrors(LOG, "Unable to map JSONpayload", exc, response);
+    }
+
+    return operationResult;
+  }
+
+  /**
+   * Format output.
+   *
+   * @param results the results
+   * @return the JSON object
+   */
+  private JSONObject formatOutput(String results) {
+    JsonNode resultNode = null;
+    JSONObject finalResult = new JSONObject();
+    JSONArray entitiesArr = new JSONArray();
+
+    try {
+      resultNode = mapper.readTree(results);
+
+      final JsonNode hitsNode = resultNode.get("hits").get("hits");
+      if (hitsNode.isArray()) {
+
+        for (final JsonNode arrayNode : hitsNode) {
+          JsonNode sourceNode = arrayNode.get("_source");
+          if (sourceNode.get("location") != null) {
+            JsonNode locationNode = sourceNode.get("location");
+            if (NodeUtils.isNumeric(locationNode.get("lon").asText())
+                && NodeUtils.isNumeric(locationNode.get("lat").asText())) {
+              JSONObject location = new JSONObject();
+              location.put("longitude", locationNode.get("lon").asText());
+              location.put("latitude", locationNode.get("lat").asText());
+
+              entitiesArr.put(location);
+            }
+
+          }
+        }
+      }
+      finalResult.put("plotPoints", entitiesArr);
+
+    } catch (IOException exc) {
+      LOG.warn(AaiUiMsgs.ERROR_BUILDING_SEARCH_RESPONSE, exc.getLocalizedMessage());
+    }
+
+    return finalResult;
+  }
+}