Added cf-profile.py script for processing profiling output

Changelog: Title
Signed-off-by: Victor Moene <[email protected]>

Author: victormlg

contrib/cf-profile/cf-profile.py

@@ -0,0 +1,57 @@
+from argparse import ArgumentParser
+import sys
+import json
+import re
+
+
+def parse_args():
+    parser = ArgumentParser()
+
+    parser.add_argument("--top", type=int, default=10)
+    parser.add_argument("--bundles", action="store_true")
+    parser.add_argument("--promises", action="store_true")
+    parser.add_argument("--functions", action="store_true")
+
+    return parser.parse_args()
+
+
+def profile(data, args):
+
+    events = sorted(
+        [event for event in data["events"]], key=lambda x: x["elapsed"], reverse=True
+    )
+
+    filter = []
+
+    if args.bundles:
+        filter.append("bundle")
+
+    if args.promises:
+        filter.append("promise")
+
+    if args.functions:
+        filter.append("function")
+
+    if filter:
+        events = [event for event in events if event["type"] in filter]
+
+    print("%-60s %-90s %20s" % ("Component", "Location", "Time"))
+    for t in events[: args.top]:
+
+        label = "%s %s" % (t["type"], t["name"])
+        location = "%s:%s" % (t["filename"], t["offset"]["line"])
+        time_ms = "%.2f ms" % (float(t["elapsed"]) / 1e6)
+
+        print("%-60s %-90s %20s" % (label, location, time_ms))
+
+
+def main():
+    args = parse_args()
+    m = re.search(r"\{[.\s\S]*\}", sys.stdin.read())
+    data = json.loads(m.group(0))
+
+    profile(data, args)
+
+
+if __name__ == "__main__":
+    main()