[llvm] [CI] Extend metrics container to log BuildKite metrics (PR #130996)

[Aiden Grossman via llvm-commits]

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@@ -70,6 +83,170 @@ class GaugeMetric:
     time_ns: int
 
 
+def buildkite_fetch_page_build_list(
+    buildkite_token: str, after_cursor: str = None
+) -> list[dict[str, str]]:
+    """Fetches a page of the build list using the GraphQL BuildKite API.
+    Returns the BUILDKITE_GRAPHQL_BUILDS_PER_PAGE last running/queued builds,
+    or the BUILDKITE_GRAPHQL_BUILDS_PER_PAGE running/queued builds
+    older than the one pointer by |after_cursor| if provided.
+    The |after_cursor| value is taken from the previous page returned by the
+    API.
+    Args:
----------------
boomanaiden154 wrote:

For the docstring: One line summary at the top, and then newlines before `Args:` and `Return:` (https://google.github.io/styleguide/pyguide.html#38-comments-and-docstrings).

https://github.com/llvm/llvm-project/pull/130996