[llvm] [CI] Upstream metrics script and container definition (PR #117461)

[Nathan Gauër via llvm-commits]

================
@@ -0,0 +1,185 @@
+import requests
+import time
+import os
+from dataclasses import dataclass
+import sys
+
+import github
+from github import Github
+from github import Auth
+
+GRAFANA_URL = (
+    "https://influx-prod-13-prod-us-east-0.grafana.net/api/v1/push/influx/write"
+)
+GITHUB_PROJECT = "llvm/llvm-project"
+WORKFLOWS_TO_TRACK = ["Check code formatting"]
+SCRAPE_INTERVAL_SECONDS = 5 * 60
+
+
+ at dataclass
+class JobMetrics:
+    job_name: str
+    queue_time: int
+    run_time: int
+    status: int
+    created_at_ns: int
+    workflow_id: int
+
+
+def get_metrics(github_repo: github.Repository, workflows_to_track: dict[str, int]):
+    """Gets the metrics for specified Github workflows.
+
+    This function takes in a list of workflows to track, and optionally the
+    workflow ID of the last tracked invocation. It grabs the relevant data
+    from Github, returning it to the caller.
+
+    Args:
+      github_repo: A github repo object to use to query the relevant information.
+      workflows_to_track: A dictionary mapping workflow names to the last
+        invocation ID where metrics have been collected, or None to collect the
+        last five results.
+
+    Returns:
+      Returns a list of JobMetrics objects, containing the relevant metrics about
+      the workflow.
+    """
+    workflow_runs = iter(github_repo.get_workflow_runs())
+
+    workflow_metrics = []
+
+    workflows_to_include = set(workflows_to_track.keys())
+
+    while len(workflows_to_include) > 0:
+        workflow_run = next(workflow_runs)
+        if workflow_run.status != "completed":
+            continue
+
+        # This workflow is not tracked at all. Ignoring.
+        if workflow_run.name not in workflows_to_track:
+            continue
+
----------------
Keenuts wrote:

```suggestion
```

Actually now that I look at it: `workflows_to_include` is a subset (or copy for 1st iteration) of `workflows_to_track`. So this statement is redundant.

https://github.com/llvm/llvm-project/pull/117461