revlog: Extract low-level random-access file read caching logic
The `revlog` class does many things, among which fulfilling requests for
arbitrary byte slices from the revlog "data file" by reading a larger chunk
and caching it in memory, in order to reduce the number of system calls.
This extracts that logic into a new class, so that it may later also be used
for the side-data file (with another instance of that class).
The copyright notice of the new file does not include a date or author name
since such information tend not to be kept up-to-date:
https://www.linuxfoundation.org/en/blog/copyright-notices-in-open-source-software-projects/
Differential Revision: https://phab.mercurial-scm.org/D10878
#!/usr/bin/env python3
#
# A small script to automatically reject idle Diffs
#
# you need to set the PHABBOT_USER and PHABBOT_TOKEN environment variable for authentication
from __future__ import absolute_import, print_function
import datetime
import os
import sys
import phabricator
MESSAGE = """There seems to have been no activities on this Diff for the past 3 Months.
By policy, we are automatically moving it out of the `need-review` state.
Please, move it back to `need-review` without hesitation if this diff should still be discussed.
:baymax:need-review-idle:
"""
PHAB_URL = "https://phab.mercurial-scm.org/api/"
USER = os.environ.get("PHABBOT_USER", "baymax")
TOKEN = os.environ.get("PHABBOT_TOKEN")
NOW = datetime.datetime.now()
# 3 months in seconds
DELAY = 60 * 60 * 24 * 30 * 3
def get_all_diff(phab):
"""Fetch all the diff that the need review"""
return phab.differential.query(
status="status-needs-review",
order="order-modified",
paths=[('HG', None)],
)
def filter_diffs(diffs, older_than):
"""filter diffs to only keep the one unmodified sin <older_than> seconds"""
olds = []
for d in diffs:
modified = int(d['dateModified'])
modified = datetime.datetime.fromtimestamp(modified)
d["idleFor"] = idle_for = NOW - modified
if idle_for.total_seconds() > older_than:
olds.append(d)
return olds
def nudge_diff(phab, diff):
"""Comment on the idle diff and reject it"""
diff_id = int(d['id'])
phab.differential.createcomment(
revision_id=diff_id, message=MESSAGE, action="reject"
)
if not USER:
print(
"not user specified please set PHABBOT_USER and PHABBOT_TOKEN",
file=sys.stderr,
)
elif not TOKEN:
print(
"not api-token specified please set PHABBOT_USER and PHABBOT_TOKEN",
file=sys.stderr,
)
sys.exit(1)
phab = phabricator.Phabricator(USER, host=PHAB_URL, token=TOKEN)
phab.connect()
phab.update_interfaces()
print('Hello "%s".' % phab.user.whoami()['realName'])
diffs = get_all_diff(phab)
print("Found %d Diffs" % len(diffs))
olds = filter_diffs(diffs, DELAY)
print("Found %d old Diffs" % len(olds))
for d in olds:
diff_id = d['id']
status = d['statusName']
modified = int(d['dateModified'])
idle_for = d["idleFor"]
msg = 'nudging D%s in "%s" state for %s'
print(msg % (diff_id, status, idle_for))
# uncomment to actually affect phab
nudge_diff(phab, d)