CI Timing Statistics (#38598)

* Write timing information for installs from cache

* CI: aggregate and upload install_times.json to artifacts

* CI: Don't change root directory for artifact generation

* Flat event based timer variation

Event based timer allows for easily starting and stopping timers without
wiping sub-timer data. It also requires less branching logic when
tracking time.

The json output is non-hierarchical in this version and hierarchy is
less rigidly enforced between starting and stopping.

* Add and write timers for top level install

* Update completion

* remove unused subtimer api

* Fix unit tests

* Suppress timing summary option

* Save timers summaries to user_data artifacts

* Remove completion from fish

* Move spack python to script section

* Write timer correctly for non-cache installs

* Re-add hash to timer file

* Fish completion updates

* Fix null timer yield value

* fix type hints

* Remove timer-summary-file option

* Add "." in front of non-package timer name

---------

Co-authored-by: Harmen Stoppels <harmenstoppels@gmail.com>
Co-authored-by: Harmen Stoppels <me@harmenstoppels.nl>

share/spack/gitlab/cloud_pipelines/scripts/common/aggregate_package_logs.spack.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env spack-python
+"""
+This script is meant to be run using:
+    `spack python aggregate_logs.spack.py`
+"""
+
+import os
+
+
+def find_logs(prefix, filename):
+    for root, _, files in os.walk(prefix):
+        if filename in files:
+            yield os.path.join(root, filename)
+
+
+if __name__ == "__main__":
+    import json
+    from argparse import ArgumentParser
+
+    parser = ArgumentParser("aggregate_logs")
+    parser.add_argument("output_file")
+    parser.add_argument("--log", default="install_times.json")
+    parser.add_argument("--prefix", required=True)
+
+    args = parser.parse_args()
+
+    prefixes = [p for p in args.prefix.split(":") if os.path.exists(p)]
+
+    # Aggregate the install timers into a single json
+    data = []
+    for prefix in prefixes:
+        time_logs = find_logs(prefix, args.log)
+        for log in time_logs:
+            with open(log) as fd:
+                data.append(json.load(fd))
+
+    with open(args.output_file, "w") as fd:
+        json.dump(data, fd)