feat(opentelemetry): add structured metadata support and update log transformation logic

Signed-off-by: zhenyus <zhenyus@mathmast.com>

cluster/manifests/freeleaps-logging-system/loki/values.yaml

@@ -347,6 +347,17 @@ loki:
     split_queries_by_interval: 15m
     query_timeout: 300s
     volume_enabled: true
+    allow_structured_metadata: true
+    otlp_config:
+      resource_attributes:
+        attributes_config:
+          - action: index_label
+            attributes:
+              - app
+              - env
+              - k8s.pod.name
+              - k8s.namespace.name
+              - k8s.node.name
   # -- Provides a reloadable runtime configuration file for some specific configuration
   runtimeConfig: {}
   # -- Check https://grafana.com/docs/loki/latest/configuration/#common_config for more info on how to provide a common configuration

freeleaps/helm-pkg/authentication/templates/authentication/opentelemetry.yaml

@@ -78,9 +78,7 @@ spec:
         log_statements:
           - context: log
             statements:
-              - merge_maps(log.cache, ParseJSON(log.body), "upsert")
+              - set(log.body["kubernetes"], log.attributes["kubernetes"])
-              - set(log.cache["kubernetes"], resource.attributes["kubernetes"])
-              - set(log.body, log.cache)
       batch:
         send_batch_size: 5
         timeout: 10s