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Include asyncio task information in /-/threads debug page

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This commit is contained in:
Simon Willison 2019-12-04 22:46:39 -08:00
commit d6b6c9171f
5 changed files with 41 additions and 4 deletions
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21
datasette/app.py
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@ -2,6 +2,7 @@ import asyncio
import collections
import hashlib
import os
import re
import sys
import threading
import traceback
@ -477,12 +478,19 @@ class Datasette:
def threads(self):
threads = list(threading.enumerate())
return {
d = {
"num_threads": len(threads),
"threads": [
{"name": t.name, "ident": t.ident, "daemon": t.daemon} for t in threads
],
}
# Only available in Python 3.7+
if hasattr(asyncio, "all_tasks"):
tasks = asyncio.all_tasks()
d.update(
{"num_tasks": len(tasks), "tasks": [_cleaner_task_str(t) for t in tasks]}
)
return d
def table_metadata(self, database, table):
"Fetch table-specific metadata."
@ -684,3 +692,14 @@ class DatasetteRouter(AsgiRouter):
await asgi_send_html(
send, await template.render_async(info), status=status, headers=headers
)
_cleaner_task_str_re = re.compile(r"\S*site-packages/")
def _cleaner_task_str(task):
s = str(task)
# This has something like the following in it:
# running at /Users/simonw/Dropbox/Development/datasette/venv-3.7.5/lib/python3.7/site-packages/uvicorn/main.py:361>
# Clean up everything up to and including site-packages
return _cleaner_task_str_re.sub("", s)