Added extra check to avoid intermittent timing issue for deployment creation (#2586)

* Added extra check to avoid intermittent timing issue for deployment creation

Author: marinakog

integration-tests/src/test/java/oracle/weblogic/kubernetes/assertions/impl/Kubernetes.java

@@ -9,6 +9,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
 
@@ -22,6 +23,7 @@
 import io.kubernetes.client.openapi.models.V1Deployment;
 import io.kubernetes.client.openapi.models.V1DeploymentCondition;
 import io.kubernetes.client.openapi.models.V1DeploymentList;
+import io.kubernetes.client.openapi.models.V1DeploymentStatus;
 import io.kubernetes.client.openapi.models.V1Job;
 import io.kubernetes.client.openapi.models.V1JobCondition;
 import io.kubernetes.client.openapi.models.V1JobList;
@@ -661,18 +663,17 @@ public static boolean isDeploymentReady(String deploymentName,
                                           String namespace) throws ApiException {
     boolean status = false;
     V1Deployment deployment = getDeployment(deploymentName, label, namespace);
-    if (deployment != null) {
-      // get the deploymentCondition with the 'Available' type field
-      V1DeploymentCondition v1DeploymentRunningCondition = deployment.getStatus().getConditions().stream()
-          .filter(v1DeploymentCondition -> "Available".equals(v1DeploymentCondition.getType()))
-          .findAny()
-          .orElse(null);
 
-      if (v1DeploymentRunningCondition != null) {
-        status = v1DeploymentRunningCondition.getStatus().equalsIgnoreCase("true");
-      }
+    V1DeploymentCondition v1DeploymentRunningCondition  = Optional.ofNullable(deployment)
+        .map(V1Deployment::getStatus).map(V1DeploymentStatus::getConditions)
+        .orElse(null).stream()
+        .filter(v1DeploymentCondition -> "Available".equals(v1DeploymentCondition.getType()))
+        .findAny()
+        .orElse(null);
+    if (v1DeploymentRunningCondition != null) {
+      status = v1DeploymentRunningCondition.getStatus().equalsIgnoreCase("true");
     } else {
-      getLogger().info("Deployment doesn't exist");
+      getLogger().info("Can't check deployment status");
     }
     return status;
   }