chore: update charm libraries (#297)

Author: observability-noctua-bot

lib/charms/tempo_coordinator_k8s/v0/charm_tracing.py

@@ -69,6 +69,9 @@ def my_tracing_endpoint(self) -> Optional[str]:
     - every event as a span (including custom events)
     - every charm method call (except dunders) as a span
 
+We recommend that you scale up your tracing provider and relate it to an ingress so that your tracing requests
+go through the ingress and get load balanced across all units. Otherwise, if the provider's leader goes down, your tracing goes down.
+
 
 ## TLS support
 If your charm integrates with a TLS provider which is also trusted by the tracing provider (the Tempo charm),
@@ -269,7 +272,7 @@ def _remove_stale_otel_sdk_packages():
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
 
-LIBPATCH = 2
+LIBPATCH = 3
 
 PYDEPS = ["opentelemetry-exporter-otlp-proto-http==1.21.0"]
 

lib/charms/tempo_coordinator_k8s/v0/tracing.py

@@ -34,7 +34,7 @@ def __init__(self, *args):
 `TracingEndpointRequirer.request_protocols(*protocol:str, relation:Optional[Relation])` method.
 Using this method also allows you to use per-relation protocols.
 
-Units of provider charms obtain the tempo endpoint to which they will push their traces by calling
+Units of requirer charms obtain the tempo endpoint to which they will push their traces by calling
 `TracingEndpointRequirer.get_endpoint(protocol: str)`, where `protocol` is, for example:
 - `otlp_grpc`
 - `otlp_http`
@@ -44,7 +44,10 @@ def __init__(self, *args):
 If the `protocol` is not in the list of protocols that the charm requested at endpoint set-up time,
 the library will raise an error.
 
-## Requirer Library Usage
+We recommend that you scale up your tracing provider and relate it to an ingress so that your tracing requests
+go through the ingress and get load balanced across all units. Otherwise, if the provider's leader goes down, your tracing goes down.
+
+## Provider Library Usage
 
 The `TracingEndpointProvider` object may be used by charms to manage relations with their
 trace sources. For this purposes a Tempo-like charm needs to do two things
@@ -107,7 +110,7 @@ def __init__(self, *args):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 2
+LIBPATCH = 3
 
 PYDEPS = ["pydantic"]