chore: improve logging (#37)

Author: oleksii-donets

log-config/logging.levels.json

@@ -0,0 +1,10 @@
+{
+  "loggerLevels": {
+    "com.epam.aidial.deployment.manager": {
+      "defaultLevel": "INFO"
+    },
+    "com.epam.aidial.deployment.manager.service.deployment.AbstractDeploymentManager": {
+      "defaultLevel": "DEBUG"
+    }
+  }
+}

src/main/java/com/epam/aidial/deployment/manager/kubernetes/informer/registration/AbstractInformerRegistration.java

@@ -21,7 +21,10 @@ public void start() {
         log.info("Starting {} informer", getResourceType());
         informer = createInformer();
         informer.addEventHandler(eventHandler);
-        informer.exceptionHandler((b, t) -> true);
+        informer.exceptionHandler((b, t) -> {
+            log.warn("Exception in {} informer", getResourceType(), t);
+            return true;
+        });
         informer.run();
         log.info("{} informer started successfully", getResourceType());
     }

src/main/java/com/epam/aidial/deployment/manager/service/deployment/AbstractDeploymentManager.java

@@ -231,8 +231,8 @@ public boolean reconcile(ReconcileConfig<S> config) {
         var deployment = deploymentOptional.get();
 
         var status = config.isServiceIsMissing() ? DeploymentStatus.NOT_DEPLOYED : mapStatus(service);
-        if (log.isDebugEnabled()) {
-            log.debug("{}: started state sync for deployment '{}' with DB status {} and K8s status {}. Service: {}",
+        if (log.isTraceEnabled()) {
+            log.trace("{}: started state sync for deployment '{}' with DB status {} and K8s status {}. Service: {}",
                     initiator, deploymentId, deployment.getStatus(), status, Serialization.asYaml(service));
         }