catalog-be/src/main/java/org/openecomp/sdc/be/components/distribution/engine/AaiRequestHandler.java

   1 package org.openecomp.sdc.be.components.distribution.engine;
   2
   3 import org.apache.http.conn.ConnectTimeoutException;
   4 import org.openecomp.sdc.be.config.ConfigurationManager;
   5 import org.openecomp.sdc.common.api.Constants;
   6 import org.openecomp.sdc.common.datastructure.FunctionalInterfaces;
   7 import org.openecomp.sdc.common.datastructure.FunctionalInterfaces.SupplierThrows;
   8 import org.openecomp.sdc.common.http.client.api.HttpExecuteException;
   9 import org.openecomp.sdc.common.http.client.api.HttpRequest;
  10 import org.openecomp.sdc.common.http.client.api.HttpResponse;
  11 import org.openecomp.sdc.common.http.client.api.Responses;
  12 import org.openecomp.sdc.common.http.config.ExternalServiceConfig;
  13 import org.slf4j.Logger;
  14 import org.slf4j.LoggerFactory;
  15 import org.springframework.stereotype.Component;
  16
  17 import javax.annotation.PostConstruct;
  18 import javax.ws.rs.core.HttpHeaders;
  19 import javax.ws.rs.core.MediaType;
  20 import java.net.ConnectException;
  21 import java.net.SocketTimeoutException;
  22 import java.util.Properties;
  23 import java.util.UUID;
  24
  25 @Component
  26 public class AaiRequestHandler {
  27
  28     private static final Logger logger = LoggerFactory.getLogger(AaiRequestHandler.class);
  29     private ExternalServiceConfig aaiConfig;
  30
  31     protected static final String OPERATIONAL_ENV_RESOURCE_CONFIG_PARAM = "operationalEnvironments";
  32     protected static final String OPERATIONAL_ENV_RESOURCE = "/operational-environment";
  33
  34     @PostConstruct
  35     public void init() {
  36         logger.debug("AaiRequestHandler has been initialized.");
  37
  38         aaiConfig = ConfigurationManager.getConfigurationManager().getDistributionEngineConfiguration().getAaiConfig();
  39         logger.debug("AaiRequestHandler Configuration={}", aaiConfig);
  40     }
  41
  42
  43     public HttpResponse<String> getOperationalEnvById(String id) {
  44         Properties headers = createHeaders();
  45         String url = String.format("%s%s%s/%s",
  46                 aaiConfig.getHttpRequestConfig().getServerRootUrl(),
  47                 aaiConfig.getHttpRequestConfig().getResourceNamespaces().get(OPERATIONAL_ENV_RESOURCE_CONFIG_PARAM),
  48                 OPERATIONAL_ENV_RESOURCE, id);
  49
  50         SupplierThrows<HttpResponse<String>, Exception> httpGet = () -> HttpRequest.get(url, headers, aaiConfig.getHttpClientConfig());
  51         long maxRetries = aaiConfig.getHttpClientConfig().getNumOfRetries();
  52         try {
  53             return FunctionalInterfaces.retryMethodOnException(httpGet, this::retryOnException, maxRetries);
  54         }
  55         catch (Exception e) {
  56             logger.debug("Request failed with exception {}", getCause(e).getMessage());
  57             return Responses.INTERNAL_SERVER_ERROR;
  58         }
  59     }
  60
  61
  62     private boolean retryOnException(Exception e) {
  63         Throwable cause = getCause(e);
  64         return !(cause instanceof ConnectTimeoutException || cause instanceof ConnectException || cause instanceof SocketTimeoutException);
  65     }
  66
  67
  68     private Throwable getCause(Exception e) {
  69         if (e instanceof HttpExecuteException) {
  70             return e.getCause();
  71         }
  72         return e;
  73     }
  74
  75
  76     private Properties createHeaders() {
  77         Properties headers = new Properties();
  78         headers.put(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON);
  79         headers.put(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
  80         headers.put(Constants.X_TRANSACTION_ID_HEADER, UUID.randomUUID().toString());
  81
  82         return headers;
  83     }
  84 }