[DPE-5312] Integrate with Tempo HA + relay tempo traffic through COSAgent (grafana-agent charm)

.github/workflows/ci.yaml

@@ -66,7 +66,7 @@ jobs:
 
   build:
     name: Build charm
-    uses: canonical/data-platform-workflows/.github/workflows/[email protected].0
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected].1
     with:
       # Use of cache blocked by https://github.com/canonical/charmcraft/issues/1456
       # Details: https://github.com/canonical/charmcraftcache/issues/3

.github/workflows/release.yaml

@@ -15,14 +15,14 @@ jobs:
 
   build:
     name: Build charm
-    uses: canonical/data-platform-workflows/.github/workflows/[email protected].0
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected].1
 
   release:
     name: Release charm
     needs:
       - ci-tests
       - build
-    uses: canonical/data-platform-workflows/.github/workflows/[email protected].0
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected].1
     with:
       channel: dpe/edge
       artifact-prefix: ${{ needs.build.outputs.artifact-prefix }}

.github/workflows/sync_docs.yaml

@@ -10,7 +10,7 @@ on:
 jobs:
   sync-docs:
     name: Sync docs from Discourse
-    uses: canonical/data-platform-workflows/.github/workflows/[email protected].0
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected].1
     with:
       reviewers: a-velasco
     permissions:

lib/charms/data_platform_libs/v0/data_interfaces.py

@@ -331,7 +331,7 @@ def _on_topic_requested(self, event: TopicRequestedEvent):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 39
+LIBPATCH = 40
 
 PYDEPS = ["ops>=2.0.0"]
 
@@ -391,6 +391,10 @@ class IllegalOperationError(DataInterfacesError):
     """To be used when an operation is not allowed to be performed."""
 
 
+class PrematureDataAccessError(DataInterfacesError):
+    """To be raised when the Relation Data may be accessed (written) before protocol init complete."""
+
+
 ##############################################################################
 # Global helpers / utilities
 ##############################################################################
@@ -1453,6 +1457,8 @@ def _on_relation_changed_event(self, event: RelationChangedEvent) -> None:
 class ProviderData(Data):
     """Base provides-side of the data products relation."""
 
+    RESOURCE_FIELD = "database"
+
     def __init__(
         self,
         model: Model,
@@ -1618,6 +1624,15 @@ def _fetch_my_specific_relation_data(
     def _update_relation_data(self, relation: Relation, data: Dict[str, str]) -> None:
         """Set values for fields not caring whether it's a secret or not."""
         req_secret_fields = []
+
+        keys = set(data.keys())
+        if self.fetch_relation_field(relation.id, self.RESOURCE_FIELD) is None and (
+            keys - {"endpoints", "read-only-endpoints", "replset"}
+        ):
+            raise PrematureDataAccessError(
+                "Premature access to relation data, update is forbidden before the connection is initialized."
+            )
+
         if relation.app:
             req_secret_fields = get_encoded_list(relation, relation.app, REQ_SECRET_FIELDS)
 
@@ -3290,6 +3305,8 @@ class KafkaRequiresEvents(CharmEvents):
 class KafkaProviderData(ProviderData):
     """Provider-side of the Kafka relation."""
 
+    RESOURCE_FIELD = "topic"
+
     def __init__(self, model: Model, relation_name: str) -> None:
         super().__init__(model, relation_name)
 
@@ -3539,6 +3556,8 @@ class OpenSearchRequiresEvents(CharmEvents):
 class OpenSearchProvidesData(ProviderData):
     """Provider-side of the OpenSearch relation."""
 
+    RESOURCE_FIELD = "index"
+
     def __init__(self, model: Model, relation_name: str) -> None:
         super().__init__(model, relation_name)