jenkins-bot has submitted this change and it was merged.
Change subject: Site.editpage: Moving locking mechanism into a try...finally block ......................................................................
Site.editpage: Moving locking mechanism into a try...finally block
Repetition is the root of all evil. One place where self.unlock_page(page) is forgotten can cause a deadlock.
Try...finally block is used everywhere else for unlocking in Site except for editpage.
Bug: T145633 Change-Id: Ia5738f651fa23ab1a62d0f3ead85e0dbf4856136 --- M pywikibot/site.py 1 file changed, 77 insertions(+), 79 deletions(-)
Approvals: Xqt: Looks good to me, approved jenkins-bot: Verified
diff --git a/pywikibot/site.py b/pywikibot/site.py index 27f45fc..92cf5e1 100644 --- a/pywikibot/site.py +++ b/pywikibot/site.py @@ -4947,7 +4947,6 @@ token = self.tokens['edit'] if bot is None: bot = ("bot" in self.userinfo["rights"]) - self.lock_page(page) params = dict(action='edit', title=page, text=text, token=token, summary=summary, bot=bot, recreate=recreate, createonly=createonly, @@ -4973,92 +4972,91 @@ u"editpage: Invalid watch value '%(watch)s' ignored." % {'watch': watch}) req = self._simple_request(**params) - while True: - try: - result = req.submit() - pywikibot.debug(u"editpage response: %s" % result, - _logger) - except api.APIError as err: - self.unlock_page(page) - if err.code.endswith("anon") and self.logged_in(): + + self.lock_page(page) + try: + while True: + try: + result = req.submit() + pywikibot.debug(u"editpage response: %s" % result, + _logger) + except api.APIError as err: + if err.code.endswith("anon") and self.logged_in(): + pywikibot.debug( + u"editpage: received '%s' even though bot is logged in" + % err.code, + _logger) + if err.code in self._ep_errors: + if isinstance(self._ep_errors[err.code], basestring): + errdata = { + 'site': self, + 'title': page.title(withSection=False), + 'user': self.user(), + 'info': err.info + } + raise Error(self._ep_errors[err.code] % errdata) + else: + raise self._ep_errors[err.code](page) pywikibot.debug( - u"editpage: received '%s' even though bot is logged in" + u"editpage: Unexpected error code '%s' received." % err.code, _logger) - if err.code in self._ep_errors: - if isinstance(self._ep_errors[err.code], basestring): - errdata = { - 'site': self, - 'title': page.title(withSection=False), - 'user': self.user(), - 'info': err.info - } - raise Error(self._ep_errors[err.code] % errdata) - else: - raise self._ep_errors[err.code](page) - pywikibot.debug( - u"editpage: Unexpected error code '%s' received." - % err.code, - _logger) - raise - assert "edit" in result and "result" in result["edit"], result - if result["edit"]["result"] == "Success": - self.unlock_page(page) - if "nochange" in result["edit"]: - # null edit, page not changed - pywikibot.log(u"Page [[%s]] saved without any changes." - % page.title()) + raise + assert "edit" in result and "result" in result["edit"], result + if result["edit"]["result"] == "Success": + if "nochange" in result["edit"]: + # null edit, page not changed + pywikibot.log(u"Page [[%s]] saved without any changes." + % page.title()) + return True + page.latest_revision_id = result["edit"]["newrevid"] + # see https://www.mediawiki.org/wiki/API:Wikimania_2006_API_discussion#Notes + # not safe to assume that saved text is the same as sent + del page.text return True - page.latest_revision_id = result["edit"]["newrevid"] - # see https://www.mediawiki.org/wiki/API:Wikimania_2006_API_discussion#Notes - # not safe to assume that saved text is the same as sent - del page.text - return True - elif result["edit"]["result"] == "Failure": - if "captcha" in result["edit"]: - captcha = result["edit"]["captcha"] - req['captchaid'] = captcha['id'] - if captcha["type"] == "math": - # TODO: Should the input be parsed through eval in py3? - req['captchaword'] = input(captcha["question"]) - continue - elif "url" in captcha: - import webbrowser - webbrowser.open('%s://%s%s' - % (self.protocol(), - self.hostname(), - captcha["url"])) - req['captchaword'] = pywikibot.input( - "Please view CAPTCHA in your browser, " - "then type answer here:") - continue - else: - self.unlock_page(page) + elif result["edit"]["result"] == "Failure": + if "captcha" in result["edit"]: + captcha = result["edit"]["captcha"] + req['captchaid'] = captcha['id'] + if captcha["type"] == "math": + # TODO: Should the input be parsed through eval in py3? + req['captchaword'] = input(captcha["question"]) + continue + elif "url" in captcha: + import webbrowser + webbrowser.open('%s://%s%s' + % (self.protocol(), + self.hostname(), + captcha["url"])) + req['captchaword'] = pywikibot.input( + "Please view CAPTCHA in your browser, " + "then type answer here:") + continue + else: + pywikibot.error( + u"editpage: unknown CAPTCHA response %s, " + u"page not saved" + % captcha) + return False + elif 'spamblacklist' in result['edit']: + raise SpamfilterError(page, result['edit']['spamblacklist']) + elif 'code' in result['edit'] and 'info' in result['edit']: pywikibot.error( - u"editpage: unknown CAPTCHA response %s, " - u"page not saved" - % captcha) + u"editpage: %s\n%s, " + % (result['edit']['code'], result['edit']['info'])) return False - elif 'spamblacklist' in result['edit']: - raise SpamfilterError(page, result['edit']['spamblacklist']) - elif 'code' in result['edit'] and 'info' in result['edit']: - self.unlock_page(page) - pywikibot.error( - u"editpage: %s\n%s, " - % (result['edit']['code'], result['edit']['info'])) - return False + else: + pywikibot.error(u"editpage: unknown failure reason %s" + % str(result)) + return False else: - self.unlock_page(page) - pywikibot.error(u"editpage: unknown failure reason %s" - % str(result)) + pywikibot.error( + u"editpage: Unknown result code '%s' received; " + u"page not saved" % result["edit"]["result"]) + pywikibot.log(str(result)) return False - else: - self.unlock_page(page) - pywikibot.error( - u"editpage: Unknown result code '%s' received; " - u"page not saved" % result["edit"]["result"]) - pywikibot.log(str(result)) - return False + finally: + self.unlock_page(page)
OnErrorExc = namedtuple('OnErrorExc', 'exception on_new_page')