Fix potential issue while install CSAR

Add random waiting timer for treat notification, so that no 2 threads
will treate the notif at the same time; Add the retry mechanism for the
DCAE Inventory api call.

Change-Id: I9bd8a58001d638c589309a9d65e4df6a2e437209
Signed-off-by: xg353y <xg353y@intl.att.com>
Issue-ID: CLAMP-151

3 files changed, 43 insertions, 5 deletions

diff --git a/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java b/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java
index ffc9b8e2..f1cfd18f 100644
--- a/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java
+++ b/src/main/java/org/onap/clamp/clds/client/DcaeInventoryServices.java
@@ -61,6 +61,8 @@ public class DcaeInventoryServices {
     protected static final EELFLogger auditLogger = EELFManager.getInstance().getAuditLogger();

     protected static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();

     public static final String DCAE_INVENTORY_URL = "dcae.inventory.url";

+    public static final String DCAE_INVENTORY_RETRY_INTERVAL = "dcae.intentory.retry.interval";

+    public static final String DCAE_INVENTORY_RETRY_LIMIT = "dcae.intentory.retry.limit";

     public static final String DCAE_TYPE_NAME = "typeName";

     public static final String DCAE_TYPE_ID = "typeId";

     @Autowired

@@ -78,7 +80,7 @@ public class DcaeInventoryServices {
      * @throws ParseException

      *             In case of DCAE Json parse exception

      */

-    public void setEventInventory(CldsModel cldsModel, String userId) throws ParseException {

+    public void setEventInventory(CldsModel cldsModel, String userId) throws ParseException, InterruptedException {

         String artifactName = cldsModel.getControlName();

         DcaeEvent dcaeEvent = new DcaeEvent();

         DcaeInventoryResponse dcaeResponse = null;

@@ -159,7 +161,7 @@ public class DcaeInventoryServices {
      *             In case of issues with the Json parsing

      */

     public DcaeInventoryResponse getDcaeInformation(String artifactName, String serviceUuid, String resourceUuid)

-            throws IOException, ParseException {

+            throws IOException, ParseException, InterruptedException {

         Date startTime = new Date();

         LoggingUtils.setTargetContext("DCAE", "getDcaeInformation");

         String queryString = "?asdcResourceId=" + resourceUuid + "&asdcServiceId=" + serviceUuid + "&typeName="

@@ -167,7 +169,8 @@ public class DcaeInventoryServices {
         String fullUrl = refProp.getStringValue(DCAE_INVENTORY_URL) + "/dcae-service-types" + queryString;

         logger.info("Dcae Inventory Service full url - " + fullUrl);

         String dcaeInventoryResponse = null;

-        String responseStr = DcaeHttpConnectionManager.doDcaeHttpQuery(fullUrl, "GET", null, null);

+

+        String responseStr = queryDCAEInventory (fullUrl);

         JSONParser parser = new JSONParser();

         Object obj0 = parser.parse(responseStr);

         JSONObject jsonObj = (JSONObject) obj0;

@@ -185,6 +188,34 @@ public class DcaeInventoryServices {
         return JacksonUtils.getObjectMapperInstance().readValue(dcaeInventoryResponse, DcaeInventoryResponse.class);

     }

 

+    private String queryDCAEInventory (String fullUrl) throws IOException, InterruptedException {

+        int retryInterval = 0;

+        int retryLimit = 1;

+        if (refProp.getStringValue(DCAE_INVENTORY_RETRY_LIMIT) != null) {

+            retryLimit = Integer.valueOf(refProp.getStringValue(DCAE_INVENTORY_RETRY_LIMIT));

+        }

+        if (refProp.getStringValue(DCAE_INVENTORY_RETRY_INTERVAL) != null) {

+        	retryInterval = Integer.valueOf(refProp.getStringValue(DCAE_INVENTORY_RETRY_INTERVAL));

+        }

+

+        int i = 0;

+        while (i < retryLimit) {

+            i++;

+            try {

+                return DcaeHttpConnectionManager.doDcaeHttpQuery(fullUrl, "GET", null, null);

+            } catch (BadRequestException e) {

+                if (i == retryLimit) {

+                    // reach the retry limit, but still failed to connect to DCAE

+                    throw e;

+                } else {

+                    // wait for a while and try to connect to DCAE again

+                    Thread.sleep(retryInterval);

+                }

+            }

+        }

+        // normally it should not go to this branch. It should either return the DCAE query result, or throw exception

+        return null;

+    }

     /**

      * Inserts a new DCAEServiceType or updates an existing instance. If the

      * typeName is same second time(already exists) then the

diff --git a/src/main/java/org/onap/clamp/clds/sdc/controller/SdcSingleController.java b/src/main/java/org/onap/clamp/clds/sdc/controller/SdcSingleController.java
index 627bc72a..a44f8677 100644
--- a/src/main/java/org/onap/clamp/clds/sdc/controller/SdcSingleController.java
+++ b/src/main/java/org/onap/clamp/clds/sdc/controller/SdcSingleController.java
@@ -27,6 +27,7 @@ import com.att.eelf.configuration.EELFLogger;
 import com.att.eelf.configuration.EELFManager;

 

 import java.util.Date;

+import java.util.concurrent.ThreadLocalRandom;

 

 import org.onap.clamp.clds.config.ClampProperties;

 import org.onap.clamp.clds.config.sdc.SdcSingleControllerConfiguration;

@@ -200,6 +201,10 @@ public class SdcSingleController {
     public void treatNotification(INotificationData iNotif) {

         CsarHandler csar = null;

         try {

+            // wait for a random time, so that 2 running Clamp will not treat the same Notification at the same time 

+            int i = ThreadLocalRandom.current().nextInt(1, 5);

+            Thread.sleep(i * 1000);

+

             logger.info("Notification received for service UUID:" + iNotif.getServiceUUID());

             this.changeControllerStatus(SdcSingleControllerStatus.BUSY);

             csar = new CsarHandler(iNotif, this.sdcConfig.getSdcControllerName(),

@@ -241,6 +246,8 @@ public class SdcSingleController {
             this.sendSdcNotification(NotificationType.DEPLOY, csar.getArtifactElement().getArtifactURL(),

                     sdcConfig.getConsumerID(), iNotif.getDistributionID(), DistributionStatusEnum.DEPLOY_ERROR,

                     e.getMessage(), System.currentTimeMillis());

+        } catch (InterruptedException e) {

+            logger.error("Interrupt exception caught during the notification processing", e);

         } catch (RuntimeException e) {

             logger.error("Unexpected exception caught during the notification processing", e);

         } finally {

diff --git a/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java b/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java
index 91c0b6a6..cb0da0aa 100644
--- a/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java
+++ b/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarInstallerImpl.java
@@ -97,7 +97,7 @@ public class CsarInstallerImpl implements CsarInstaller {
             createFakeCldsModel(csar, createFakeCldsTemplate(csar, this.searchForRightMapping(csar)), serviceTypeId);
         } catch (IOException e) {
             throw new SdcArtifactInstallerException("Exception caught during the Csar installation in database", e);
-        } catch (ParseException e) {
+        } catch (ParseException | InterruptedException e) {
             throw new SdcArtifactInstallerException("Exception caught during the Dcae query to get ServiceTypeId", e);
         }
     }
@@ -151,7 +151,7 @@ public class CsarInstallerImpl implements CsarInstaller {
         return policyNameList.get(0);
     }
 
-    private String queryDcaeToGetServiceTypeId(CsarHandler csar) throws IOException, ParseException {
+    private String queryDcaeToGetServiceTypeId(CsarHandler csar) throws IOException, ParseException, InterruptedException {
         return dcaeInventoryService.getDcaeInformation(csar.getBlueprintArtifactName(),
                 csar.getBlueprintInvariantServiceUuid(), csar.getBlueprintInvariantResourceUuid()).getTypeId();
     }