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

[Nathan Gauër via llvm-commits]

================
@@ -0,0 +1,180 @@
+import requests
+import time
+import os
+from dataclasses import dataclass
+
+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"]
+
+
+ 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, workflows_to_track):
+    """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 = {}
+    for workflow_to_track in workflows_to_track:
+        workflows_to_include[workflow_to_track] = True
+    workflows_left_to_include = len(workflows_to_track)
+
+    while True:
+        workflow_run = next(workflow_runs)
+        if workflow_run.status != "completed":
+            continue
+
+        interesting_workflow = False
+        for workflow_name in workflows_to_track:
+            if workflow_run.name == workflow_name:
+                interesting_workflow = True
+                break
+        if not interesting_workflow:
+            continue
+
+        if not workflows_to_include[workflow_run.name]:
+            continue
----------------
Keenuts wrote:

This goes along the deletion of line 88 to 98.

```suggestion
     # This workflow is not tracked at all. Ignoring.
     if workflow_run.name not in workflows_to_track:
         continue
     
     # This workflow was already sampled for this run. Ignoring.
     if workflow_run.name not in workflows_to_include
         continue
     
     # This exact workflow has already been sampled in a previous scrape.
     # Also, the API returns a sorted list: most recent first.
     # So stop looking for this particular workflow.
     # We cannot however break out of the loop: if a new workflow was just
     # added to the watchlist, its last run might have happened earlier than
     # this one. 
     if workflows_to_track[workflow_run.name] == workflow_run.id:
         workflows_to_include.remove(workflow_run.name)
         continue
```

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