jenkins-bot has submitted this change. (
https://gerrit.wikimedia.org/r/c/pywikibot/core/+/641001 )
Change subject: [IPMR] reduce code duplication in throttle.py
......................................................................
[IPMR] reduce code duplication in throttle.py
Change-Id: I3ce1eb9cae899d3fed7e6ad868a603f603bed553
---
M pywikibot/throttle.py
1 file changed, 74 insertions(+), 84 deletions(-)
Approvals:
Xqt: Looks good to me, approved
jenkins-bot: Verified
diff --git a/pywikibot/throttle.py b/pywikibot/throttle.py
index 02c37b8..89fe2b1 100644
--- a/pywikibot/throttle.py
+++ b/pywikibot/throttle.py
@@ -9,6 +9,7 @@
import threading
import time
+from collections import namedtuple
from contextlib import suppress
from typing import Optional
@@ -19,6 +20,7 @@
_logger = 'wiki.throttle'
FORMAT_LINE = '{pid} {time} {site}\n'
+ProcEntry = namedtuple('ProcEntry', ['pid', 'time', 'site'])
# global process identifier
#
@@ -48,15 +50,9 @@
self.lock_read = threading.RLock()
self.mysite = str(site)
self.ctrlfilename = config.datafilepath('throttle.ctrl')
- self.mindelay = mindelay
- if self.mindelay is None:
- self.mindelay = config.minthrottle
- self.maxdelay = maxdelay
- if self.maxdelay is None:
- self.maxdelay = config.maxthrottle
- self.writedelay = writedelay
- if self.writedelay is None:
- self.writedelay = config.put_throttle
+ self.mindelay = mindelay or config.minthrottle
+ self.maxdelay = maxdelay or config.maxthrottle
+ self.writedelay = writedelay or config.put_throttle
self.last_read = 0
self.last_write = 0
self.next_multiplicity = 1.0
@@ -84,6 +80,40 @@
"""DEPRECATED property."""
return 0.0
+ def _read_file(self, raise_exc=False):
+ """Yield process entries from file."""
+ try:
+ with open(self.ctrlfilename, 'r') as f:
+ lines = f.readlines()
+ except IOError:
+ if raise_exc and pid:
+ raise
+ return
+
+ for line in lines:
+ # parse line; format is "pid timestamp site"
+ try:
+ _pid, _time, _site = line.split(' ')
+ proc_entry = ProcEntry(
+ pid=int(_pid),
+ time=int(float(_time)),
+ site=_site.rstrip()
+ )
+ except (IndexError, ValueError):
+ # Sometimes the file gets corrupted ignore that line
+ continue
+ yield proc_entry
+
+ def _write_file(self, processes):
+ """Write process entries to file."""
+ if not isinstance(processes, list):
+ processes = list(processes)
+ processes.sort(key=lambda p: (p.pid, p.site))
+
+ with suppress(IOError), open(self.ctrlfilename, 'w') as f:
+ for p in processes:
+ f.write(FORMAT_LINE.format_map(p._asdict()))
+
def checkMultiplicity(self):
"""Count running processes for site and set process_multiplicity."""
global pid
@@ -94,48 +124,28 @@
processes = []
my_pid = pid or 1 # start at 1 if global pid not yet set
count = 1
- # open throttle.log
- try:
- f = open(self.ctrlfilename, 'r')
- except IOError:
- if pid:
- raise
- else:
- now = time.time()
- for line in f.readlines():
- # parse line; format is "pid timestamp site"
- try:
- line = line.split(' ')
- this_pid = int(line[0])
- ptime = int(line[1].split('.')[0])
- this_site = line[2].rstrip()
- except (IndexError, ValueError):
- # Sometimes the file gets corrupted ignore that line
- continue
- if now - ptime > self.releasepid:
- continue # process has expired, drop from file
- if now - ptime <= self.dropdelay \
- and this_site == mysite \
- and this_pid != pid:
- count += 1
- if this_site != self.mysite or this_pid != pid:
- processes.append({'pid': this_pid,
- 'time': ptime,
- 'site': this_site})
- if not pid and this_pid >= my_pid:
- my_pid = this_pid + 1 # next unused process id
- f.close()
+
+ now = time.time()
+ for proc in self._read_file(raise_exc=True):
+ if now - proc.time > self.releasepid:
+ continue # process has expired, drop from file
+ if now - proc.time <= self.dropdelay \
+ and proc.site == mysite \
+ and proc.pid != pid:
+ count += 1
+ if proc.site != self.mysite or proc.pid != pid:
+ processes.append(proc)
+ if not pid and proc.pid >= my_pid:
+ my_pid = proc.pid + 1 # next unused process id
if not pid:
pid = my_pid
self.checktime = time.time()
- processes.append({'pid': pid,
- 'time': self.checktime,
- 'site': mysite})
- processes.sort(key=lambda p: (p['pid'], p['site']))
- with suppress(IOError), open(self.ctrlfilename, 'w') as f:
- for p in processes:
- f.write(FORMAT_LINE.format_map(p))
+ processes.append(
+ ProcEntry(pid=pid, time=self.checktime, site=mysite))
+
+ self._write_file(processes)
+
self.process_multiplicity = count
pywikibot.log('Found {} {} processes running, including this one.'
.format(count, mysite))
@@ -143,10 +153,8 @@
def setDelays(self, delay=None, writedelay=None, absolute=False):
"""Set the nominal delays in seconds. Defaults to config values."""
with self.lock:
- if delay is None:
- delay = self.mindelay
- if writedelay is None:
- writedelay = config.put_throttle
+ delay = delay or self.mindelay
+ writedelay = writedelay or config.put_throttle
if absolute:
self.maxdelay = delay
self.mindelay = delay
@@ -160,21 +168,24 @@
"""Return the actual delay, accounting for multiple processes.
This value is the maximum wait between reads/writes, not taking
- account of how much time has elapsed since the last access.
+ into account of how much time has elapsed since the last access.
"""
if write:
thisdelay = self.writedelay
else:
thisdelay = self.delay
- if self.multiplydelay: # We're checking for multiple processes
- if time.time() > self.checktime + self.checkdelay:
- self.checkMultiplicity()
- if thisdelay < (self.mindelay * self.next_multiplicity):
- thisdelay = self.mindelay * self.next_multiplicity
- elif thisdelay > self.maxdelay:
- thisdelay = self.maxdelay
- thisdelay *= self.process_multiplicity
+ if not self.multiplydelay:
+ return thisdelay
+
+ # We're checking for multiple processes
+ if time.time() > self.checktime + self.checkdelay:
+ self.checkMultiplicity()
+ if thisdelay < (self.mindelay * self.next_multiplicity):
+ thisdelay = self.mindelay * self.next_multiplicity
+ elif thisdelay > self.maxdelay:
+ thisdelay = self.maxdelay
+ thisdelay *= self.process_multiplicity
return thisdelay
def waittime(self, write=False):
@@ -193,33 +204,12 @@
"""Remove me from the list of running bot processes."""
# drop all throttles with this process's pid, regardless of site
self.checktime = 0
- processes = []
- try:
- with open(self.ctrlfilename, 'r') as f:
- lines = f.readlines()
- except IOError:
- return
now = time.time()
- for line in lines:
- try:
- line = line.split(' ')
- this_pid = int(line[0])
- ptime = int(line[1].split('.')[0])
- this_site = line[2].rstrip()
- except (IndexError, ValueError):
- # Sometimes the file gets corrupted ignore that line
- continue
- if now - ptime <= self.releasepid \
- and this_pid != pid:
- processes.append({'pid': this_pid,
- 'time': ptime,
- 'site': this_site})
+ processes = [p for p in self._read_file()
+ if now - p.time <= self.releasepid and p.pid != pid]
- processes.sort(key=lambda p: p['pid'])
- with suppress(IOError), open(self.ctrlfilename, 'w') as f:
- for p in processes:
- f.write(FORMAT_LINE.format_map(p))
+ self._write_file(processes)
def wait(self, seconds):
"""Wait for seconds seconds.
--
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Gerrit-Project: pywikibot/core
Gerrit-Branch: master
Gerrit-Change-Id: I3ce1eb9cae899d3fed7e6ad868a603f603bed553
Gerrit-Change-Number: 641001
Gerrit-PatchSet: 4
Gerrit-Owner: Mpaa <[email protected]>
Gerrit-Reviewer: Xqt <[email protected]>
Gerrit-Reviewer: jenkins-bot
Gerrit-MessageType: merged
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