catalog-fe/src/main/java/org/openecomp/sdc/fe/impl/DesignerStatusBL.java

   1 package org.openecomp.sdc.fe.impl;
   2
   3 import java.io.IOException;
   4 import java.util.ArrayList;
   5 import java.util.List;
   6
   7 import org.apache.http.client.methods.CloseableHttpResponse;
   8 import org.apache.http.client.methods.HttpHead;
   9 import org.apache.http.impl.client.CloseableHttpClient;
  10 import org.apache.http.impl.client.HttpClients;
  11 import org.openecomp.sdc.fe.config.ConfigurationManager;
  12 import org.openecomp.sdc.fe.config.DesignersConfiguration;
  13 import org.openecomp.sdc.fe.config.DesignersConfiguration.Designer;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 import com.google.gson.Gson;
  18 import com.google.gson.GsonBuilder;
  19
  20 public class DesignerStatusBL {
  21
  22         private static Logger log = LoggerFactory.getLogger(DesignerStatusBL.class.getName());
  23         private static  Gson gson = new GsonBuilder().setPrettyPrinting().create();
  24         private CloseableHttpClient client = null;
  25
  26         public DesignerStatusBL() {
  27                 this.client = HttpClients.createDefault();
  28         }
  29
  30         public DesignerStatusBL(CloseableHttpClient client) {
  31                 this.client = client;
  32
  33         }
  34
  35         public String checkDesignerListAvailability() {
  36                 String result = null;
  37
  38                 DesignersConfiguration designersConfiguration = ConfigurationManager.getConfigurationManager()
  39                                 .getDesignersConfiguration();
  40
  41                 if (designersConfiguration == null || designersConfiguration.getDesignersList() == null) {
  42                         log.warn("Configuration of type {} was not found", DesignersConfiguration.class);
  43                 } else {
  44                         log.debug("The value returned from getConfig is {}", designersConfiguration);
  45
  46                         List<Designer> availableDesignersList = new ArrayList<>();
  47
  48                         designersConfiguration.getDesignersList().forEach(value -> {
  49                                 if (checkDesignerAvailability(value)) {
  50                                         availableDesignersList.add(value);
  51                                 }
  52
  53                         });
  54                         result = gson.toJson(availableDesignersList);
  55                 }
  56                 return result;
  57         }
  58
  59         private boolean checkDesignerAvailability(Designer designer) {
  60
  61                 StringBuilder requestString = new StringBuilder();
  62                 boolean result = false;
  63
  64                 requestString.append(designer.getDesignerProtocol()).append("://").append(designer.getDesignerHost()).append(":")
  65                                 .append(designer.getDesignerPort()).append(designer.getDesignerPath());
  66
  67                 HttpHead head = new HttpHead(requestString.toString());
  68
  69                 try (CloseableHttpResponse response = this.client.execute(head)) {
  70                         result = response != null && response.getStatusLine().getStatusCode() == 200;
  71                 } catch (IOException e) {
  72                         log.debug("The designer {} is offline", designer);
  73                 }
  74
  75                 return result;
  76         }
  77
  78 }