seitime-frappe/frappe/utils/scheduler.py
Anand Doshi cec016be2a Fixed Website Response, Startup JS loading,
Conditions involving STANDARD_USERS, removed Validate Max Users,
Cast Floats and Ints for Single DocTypes, Ability to Disable Scheduler
2014-03-13 20:43:17 +05:30

144 lines
3.8 KiB
Python

# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
# MIT License. See license.txt
"""
Events:
always
daily
monthly
weekly
"""
from __future__ import unicode_literals
import frappe
import frappe.utils
from frappe.utils.file_lock import create_lock, check_lock, delete_lock, LockTimeoutError
from datetime import datetime
DATETIME_FORMAT = '%Y-%m-%d %H:%M:%S'
def enqueue_events(site):
if is_scheduler_disabled():
return
# lock before queuing begins
try:
lock = create_lock('scheduler')
if not lock:
return
except LockTimeoutError:
return
nowtime = frappe.utils.now_datetime()
last = frappe.db.get_global('scheduler_last_event')
# set scheduler last event
frappe.db.begin()
frappe.db.set_global('scheduler_last_event', nowtime.strftime(DATETIME_FORMAT))
frappe.db.commit()
out = []
if last:
last = datetime.strptime(last, DATETIME_FORMAT)
out = enqueue_applicable_events(site, nowtime, last)
delete_lock('scheduler')
return '\n'.join(out)
def enqueue_applicable_events(site, nowtime, last):
nowtime_str = nowtime.strftime(DATETIME_FORMAT)
out = []
def _log(event):
out.append("{time} - {event} - queued".format(time=nowtime_str, event=event))
if nowtime.day != last.day:
# if first task of the day execute daily tasks
trigger(site, "daily") and _log("daily")
trigger(site, "daily_long") and _log("daily_long")
if nowtime.month != last.month:
trigger(site, "monthly") and _log("monthly")
trigger(site, "monthly_long") and _log("monthly_long")
if nowtime.weekday()==0:
trigger(site, "weekly") and _log("weekly")
trigger(site, "weekly_long") and _log("weekly_long")
if nowtime.hour != last.hour:
trigger(site, "hourly") and _log("hourly")
trigger(site, "all") and _log("all")
return out
def trigger(site, event, now=False):
"""trigger method in startup.schedule_handler"""
from frappe.tasks import scheduler_task
for handler in frappe.get_hooks("scheduler_event:{}".format(event)):
if not check_lock(handler):
if not now:
scheduler_task.delay(site=site, event=event, handler=handler)
create_lock(handler)
else:
create_lock(handler)
scheduler_task(site=site, event=event, handler=handler, now=True)
def log(method, message=None):
"""log error in patch_log"""
message = frappe.utils.cstr(message) + "\n" if message else ""
message += frappe.get_traceback()
if not (frappe.db and frappe.db._conn):
frappe.connect()
frappe.db.rollback()
frappe.db.begin()
d = frappe.doc("Scheduler Log")
d.method = method
d.error = message
d.save()
frappe.db.commit()
return message
def is_scheduler_disabled():
return frappe.utils.cint(frappe.db.get_global("disable_scheduler"))
def enable_scheduler():
frappe.db.set_global("disable_scheduler", 0)
def disable_scheduler():
frappe.db.set_global("disable_scheduler", 1)
def get_errors(from_date, to_date, limit):
errors = frappe.db.sql("""select modified, method, error from `tabScheduler Log`
where date(modified) between %s and %s
and error not like '%%[Errno 110] Connection timed out%%'
order by modified limit %s""", (from_date, to_date, limit), as_dict=True)
return ["""<p>Time: {modified}</p><pre><code>Method: {method}\n{error}</code></pre>""".format(**e)
for e in errors]
def get_error_report(from_date=None, to_date=None, limit=10):
from frappe.utils import get_url, now_datetime, add_days
if not from_date:
from_date = add_days(now_datetime().date(), -1)
if not to_date:
to_date = add_days(now_datetime().date(), -1)
errors = get_errors(from_date, to_date, limit)
if errors:
return 1, """<h4>Scheduler Failed Events (max {limit}):</h4>
<p>URL: <a href="{url}" target="_blank">{url}</a></p><hr>{errors}""".format(
limit=limit, url=get_url(), errors="<hr>".join(errors))
else:
return 0, "<p>Scheduler didn't encounter any problems.</p>"
if __name__=='__main__':
execute()