feat: add prometheus based grafana dashboard

charmcraft.yaml

@@ -10,8 +10,12 @@ parts:
       - git  # for installing git source of pylxd 
       - libffi-dev  # for cffi
       - libssl-dev  # for cryptography
-      - rust-all  # for cryptography
       - pkg-config # for cryptography
+    build-snaps:
+      - rustup # for cryptography
+    override-build: |
+      rustup default stable
+      craftctl default
 bases:
   - build-on:
     - name: "ubuntu"

docs/changelog.md

@@ -2,6 +2,9 @@
 
 This changelog documents user-relevant changes to the GitHub runner charm.
 
+## 2025-11-11
+
+- Added Grafana dashboard using Prometheus data source.
 
 ## 2025-08-27
 

github-runner-manager/src/github_runner_manager/github_client.py

@@ -43,7 +43,7 @@ class GithubRunnerNotFoundError(Exception):
 
 
 # Parameters of the function decorated with retry
-ParamT = ParamSpec("ParamT")
+ParamT = ParamSpec("ParamT")  # pylint: disable=invalid-name
 # Return type of the function decorated with retry
 ReturnT = TypeVar("ReturnT")
 

github-runner-manager/src/github_runner_manager/metrics/runner.py

@@ -304,14 +304,14 @@ def _parse_metrics_contents(metrics_contents_map: dict[Path, str | None]) -> _Pa
         try:
             pre_job_metrics = PreJobMetrics.parse_obj(json.loads(pre_job))
         except (json.JSONDecodeError, ValidationError):
-            logger.warning("Corrupt pre-job metrics: %s")
+            logger.warning("Corrupt pre-job metrics: %s", pre_job)
 
     post_job_metrics: PostJobMetrics | None = None
     if post_job := metrics_contents_map.get(POST_JOB_METRICS_FILE_PATH, None):
         try:
             post_job_metrics = PostJobMetrics.parse_obj(json.loads(post_job))
         except (json.JSONDecodeError, ValidationError):
-            logger.warning("Corrupt post-job metrics %s")
+            logger.warning("Corrupt post-job metrics %s", post_job)
 
     return _ParsedMetricContents(
         runner_installed_timestamp=runner_installed_timestamp,

github-runner-manager/src/github_runner_manager/utilities.py

@@ -16,7 +16,7 @@
 
 
 # Parameters of the function decorated with retry
-ParamT = ParamSpec("ParamT")
+ParamT = ParamSpec("ParamT")  # pylint: disable=invalid-name
 # Return type of the function decorated with retry
 ReturnT = TypeVar("ReturnT")