Merge pull request #1 from thekix/master
Remove six, remove files rfc6555.py and selectors2.py and allow download mail from IMAP and Gmail
This commit is contained in:
Rodolfo García Peñas (kix)
GitHub
commit
7625012179
@ -106,9 +106,8 @@ Bugs, issues and contributions can be requested to both the mailing list or the
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## Requirements & dependencies
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* Python v3+
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* six (required)
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* rfc6555 (required)
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* imaplib2 >= 2.57 (optional)
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* imaplib2 >= 3.5
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* gssapi (optional), for Kerberos authentication
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* portalocker (optional), if you need to run offlineimap in Cygwin for Windows
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@ -18,7 +18,6 @@ import os
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import re
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from sys import exc_info
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from configparser import SafeConfigParser, Error
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import six
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from offlineimap.localeval import LocalEval
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@ -71,10 +70,8 @@ class CustomConfigParser(SafeConfigParser):
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val = self.get(section, option).strip()
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return re.split(separator_re, val)
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except re.error as e:
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six.reraise(Error,
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Error("Bad split regexp '%s': %s" %
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(separator_re, e)),
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exc_info()[2])
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raise Error("Bad split regexp '%s': %s" %
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(separator_re, e), exc_info()[2])
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def getdefaultlist(self, section, option, default, separator_re):
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"""Same as getlist, but returns the value of `default`
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@ -20,7 +20,6 @@ import os
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import time
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from sys import exc_info
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import traceback
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import six
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from offlineimap import mbnames, CustomConfig, OfflineImapError
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from offlineimap import globals
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@ -244,12 +243,17 @@ class SyncableAccount(Account):
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except NameError:
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pass # fnctl not available, disable file locking... :(
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except IOError:
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self._lockfd.close()
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"Could not lock account %s. Is another "
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"instance using this account?" % self,
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OfflineImapError.ERROR.REPO),
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OfflineImapError.ERROR.REPO,
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exc_info()[2])
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except IOError:
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self._lockfd.close()
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raise OfflineImapError(
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"Could not lock account %s. Is another "
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"instance using this account?" % self,
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OfflineImapError.ERROR.REPO,
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exc_info()[2])
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def _unlock(self):
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@ -614,11 +618,10 @@ def syncfolder(account, remotefolder, quick):
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localstart = localfolder.getstartdate()
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remotestart = remotefolder.getstartdate()
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if (maxage is not None) + (localstart is not None) + (remotestart is not None) > 1:
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six.reraise(OfflineImapError,
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OfflineImapError("You can set at most one of the "
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raise OfflineImapError("You can set at most one of the "
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"following: maxage, startdate (for the local "
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"folder), startdate (for the remote folder)",
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OfflineImapError.ERROR.REPO),
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OfflineImapError.ERROR.REPO,
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exc_info()[2])
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if (maxage is not None or localstart or remotestart) and quick:
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# IMAP quickchanged isn't compatible with options that
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@ -19,8 +19,6 @@
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import re
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from sys import exc_info
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import six
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from offlineimap import imaputil, imaplibutil, OfflineImapError
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import offlineimap.accounts
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from .IMAP import IMAPFolder
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@ -71,10 +69,10 @@ class GmailFolder(IMAPFolder):
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data = self._fetch_from_imap(str(uid), self.retrycount)
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# data looks now e.g.
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# [('320 (X-GM-LABELS (...) UID 17061 BODY[] {2565}','msgbody....')]
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# we only asked for one message, and that msg is in data[0].
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# msbody is in [0][1].
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body = data[0][1].replace("\r\n", "\n")
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# ['320 (X-GM-LABELS (...) UID 17061 BODY[] {2565}','msgbody....']
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# we only asked for one message, and that msg is in data[1].
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# msbody is in [1].
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body = data[1].replace("\r\n", "\n")
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# Embed the labels into the message headers
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if self.synclabels:
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@ -134,13 +132,12 @@ class GmailFolder(IMAPFolder):
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res_type, response = imapobj.fetch("'%s'" % msgsToFetch,
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'(FLAGS X-GM-LABELS UID)')
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if res_type != 'OK':
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"FETCHING UIDs in folder [%s]%s failed. " %
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(self.getrepository(), self) +
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"Server responded '[%s] %s'" %
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(res_type, response),
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OfflineImapError.ERROR.FOLDER),
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OfflineImapError.ERROR.FOLDER,
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exc_info()[2])
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finally:
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self.imapserver.releaseconnection(imapobj)
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@ -18,8 +18,6 @@
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import os
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from sys import exc_info
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import six
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import offlineimap.accounts
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from offlineimap import OfflineImapError
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from offlineimap import imaputil
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@ -181,10 +179,9 @@ class GmailMaildirFolder(MaildirFolder):
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try:
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os.rename(tmppath, filepath)
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except OSError as e:
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six.reraise(OfflineImapError,
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OfflineImapError("Can't rename file '%s' to '%s': %s" %
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raise OfflineImapError("Can't rename file '%s' to '%s': %s" %
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(tmppath, filepath, e[1]),
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OfflineImapError.ERROR.FOLDER),
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OfflineImapError.ERROR.FOLDER,
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exc_info()[2])
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# If utime_from_header=true, we don't want to change the mtime.
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@ -20,8 +20,6 @@ import binascii
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import re
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import time
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from sys import exc_info
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import six
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from offlineimap import imaputil, imaplibutil, emailutil, OfflineImapError
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from offlineimap import globals
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from imaplib2 import MonthNames
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@ -115,10 +113,9 @@ class IMAPFolder(BaseFolder):
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def getmaxage(self):
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if self.config.getdefault("Account %s" %
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self.accountname, "maxage", None):
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"maxage is not supported on IMAP-IMAP sync",
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OfflineImapError.ERROR.REPO),
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OfflineImapError.ERROR.REPO,
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exc_info()[2])
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# Interface from BaseFolder
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@ -391,6 +388,10 @@ class IMAPFolder(BaseFolder):
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try:
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matchinguids = imapobj.uid('search', 'HEADER',
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headername, headervalue)[1][0]
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# Returned value is type bytes
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matchinguids = matchinguids.decode('utf-8')
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except imapobj.error as err:
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# IMAP server doesn't implement search or had a problem.
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self.ui.debug('imap', "__savemessage_searchforheader: got IMAP "
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@ -456,11 +457,7 @@ class IMAPFolder(BaseFolder):
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# Folder was empty - start from 1.
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start = 1
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# Imaplib quotes all parameters of a string type. That must not happen
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# with the range X:*. So we use bytearray to stop imaplib from getting
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# in our way.
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result = imapobj.uid('FETCH', bytearray('%d:*' % start), 'rfc822.header')
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result = imapobj.uid('FETCH', '%d:*' % start, 'rfc822.header')
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if result[0] != 'OK':
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raise OfflineImapError('Error fetching mail headers: %s' %
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'. '.join(result[1]), OfflineImapError.ERROR.MESSAGE)
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@ -477,6 +474,9 @@ class IMAPFolder(BaseFolder):
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# ('185 (RFC822.HEADER {1789}', '... mail headers ...'), ' UID 2444)'
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for item in result:
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if found is None and type(item) == tuple:
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# Decode the value
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item = [x.decode('utf-8') for x in item]
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# Walk just tuples.
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if re.search("(?:^|\\r|\\n)%s:\s*%s(?:\\r|\\n)" % (headername, headervalue),
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item[1], flags=re.IGNORECASE):
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@ -687,13 +687,14 @@ class IMAPFolder(BaseFolder):
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self.imapserver.releaseconnection(imapobj, True)
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imapobj = self.imapserver.acquireconnection()
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if not retry_left:
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six.reraise(OfflineImapError,
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OfflineImapError("Saving msg (%s) in folder '%s', "
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raise OfflineImapError(
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"Saving msg (%s) in folder '%s', "
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"repository '%s' failed (abort). Server responded: %s\n"
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"Message content was: %s" %
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(msg_id, self, self.getrepository(), str(e), dbg_output),
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OfflineImapError.ERROR.MESSAGE),
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OfflineImapError.ERROR.MESSAGE,
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exc_info()[2])
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# XXX: is this still needed?
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self.ui.error(e, exc_info()[2])
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except imapobj.error as e: # APPEND failed
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@ -702,12 +703,13 @@ class IMAPFolder(BaseFolder):
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# drop conn, it might be bad.
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self.imapserver.releaseconnection(imapobj, True)
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imapobj = None
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six.reraise(OfflineImapError,
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OfflineImapError("Saving msg (%s) folder '%s', repo '%s'"
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raise OfflineImapError(
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"Saving msg (%s) folder '%s', repo '%s'"
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"failed (error). Server responded: %s\nMessage content was: "
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"%s" % (msg_id, self, self.getrepository(), str(e), dbg_output),
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OfflineImapError.ERROR.MESSAGE),
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OfflineImapError.ERROR.MESSAGE,
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exc_info()[2])
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# Checkpoint. Let it write out stuff, etc. Eg searches for
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# just uploaded messages won't work if we don't do this.
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(typ, dat) = imapobj.check()
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@ -18,8 +18,6 @@
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from sys import exc_info
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import os
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import threading
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import six
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from .Base import BaseFolder
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@ -71,7 +69,7 @@ class LocalStatusFolder(BaseFolder):
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errstr = ("Corrupt line '%s' in cache file '%s'" %
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(line, self.filename))
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self.ui.warn(errstr)
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six.reraise(ValueError, ValueError(errstr), exc_info()[2])
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raise ValueError(errstr, exc_info()[2])
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self.messagelist[uid] = self.msglist_item_initializer(uid)
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self.messagelist[uid]['flags'] = flags
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@ -94,7 +92,7 @@ class LocalStatusFolder(BaseFolder):
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errstr = "Corrupt line '%s' in cache file '%s'" % \
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(line, self.filename)
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self.ui.warn(errstr)
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six.reraise(ValueError, ValueError(errstr), exc_info()[2])
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raise ValueError(errstr, exc_info()[2])
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self.messagelist[uid] = self.msglist_item_initializer(uid)
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self.messagelist[uid]['flags'] = flags
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self.messagelist[uid]['mtime'] = mtime
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@ -19,9 +19,6 @@ import os
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import sqlite3 as sqlite
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from sys import exc_info
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from threading import Lock
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import six
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from .Base import BaseFolder
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@ -117,13 +114,11 @@ class LocalStatusSQLiteFolder(BaseFolder):
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self._databaseFileLock.registerNewUser()
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except sqlite.OperationalError as e:
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# Operation had failed.
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six.reraise(UserWarning,
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UserWarning(
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raise UserWarning(
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"cannot open database file '%s': %s.\nYou might"
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" want to check the rights to that file and if "
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"it cleanly opens with the 'sqlite<3>' command" %
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(self.filename, e)),
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exc_info()[2])
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(self.filename, e), exc_info()[2])
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# Test if db version is current enough and if db is readable.
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try:
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@ -351,9 +346,8 @@ class LocalStatusSQLiteFolder(BaseFolder):
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self.__sql_write('INSERT INTO status (id,flags,mtime,labels) VALUES (?,?,?,?)',
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(uid, flags, mtime, labels))
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except Exception as e:
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six.reraise(UserWarning,
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UserWarning("%s while inserting UID %s" %
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(str(e), str(uid))),
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raise UserWarning("%s while inserting UID %s" %
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(str(e), str(uid)),
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exc_info()[2])
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return uid
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@ -21,13 +21,7 @@ import re
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import os
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from sys import exc_info
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from threading import Lock
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import six
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try:
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from hashlib import md5
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except ImportError:
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from md5 import md5
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from offlineimap import OfflineImapError, emailutil
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from .Base import BaseFolder
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@ -319,10 +313,9 @@ class MaildirFolder(BaseFolder):
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time.sleep(0.23)
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continue
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severity = OfflineImapError.ERROR.MESSAGE
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"Unique filename %s already exists." %
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filename, severity),
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filename, severity,
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exc_info()[2])
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else:
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raise
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@ -442,11 +435,10 @@ class MaildirFolder(BaseFolder):
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os.rename(os.path.join(self.getfullname(), oldfilename),
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os.path.join(self.getfullname(), newfilename))
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except OSError as e:
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"Can't rename file '%s' to '%s': %s" %
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(oldfilename, newfilename, e[1]),
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OfflineImapError.ERROR.FOLDER),
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OfflineImapError.ERROR.FOLDER,
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exc_info()[2])
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self.messagelist[uid]['flags'] = flags
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@ -529,12 +521,12 @@ class MaildirFolder(BaseFolder):
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try:
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os.rename(filename, newfilename)
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except OSError as e:
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"Can't rename file '%s' to '%s': %s" %
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(filename, newfilename, e[1]),
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OfflineImapError.ERROR.FOLDER),
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OfflineImapError.ERROR.FOLDER,
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exc_info()[2])
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elif match.group(1) != self._foldermd5:
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self.ui.warn(("Inconsistent FMD5 for file `%s':"
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" Neither `%s' nor `%s' found")
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@ -20,7 +20,6 @@ import shutil
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from os import fsync, unlink
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from sys import exc_info
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from threading import Lock
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import six
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try:
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import portalocker
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@ -89,11 +88,11 @@ class MappedIMAPFolder(IMAPFolder):
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try:
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line = line.strip()
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except ValueError:
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six.reraise(Exception,
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Exception(
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raise Exception(
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"Corrupt line '%s' in UID mapping file '%s'" %
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(line, mapfilename)),
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(line, mapfilename),
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exc_info()[2])
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(str1, str2) = line.split(':')
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loc = int(str1)
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rem = int(str2)
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@ -129,13 +128,12 @@ class MappedIMAPFolder(IMAPFolder):
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try:
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return [mapping[x] for x in items]
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except KeyError as e:
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six.reraise(OfflineImapError,
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OfflineImapError(
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raise OfflineImapError(
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"Could not find UID for msg '{0}' (f:'{1}'."
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" This is usually a bad thing and should be "
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"reported on the mailing list.".format(
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e.args[0], self),
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OfflineImapError.ERROR.MESSAGE),
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OfflineImapError.ERROR.MESSAGE,
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exc_info()[2])
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# Interface from BaseFolder
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@ -24,9 +24,7 @@ import errno
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import zlib
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from sys import exc_info
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from hashlib import sha512, sha384, sha256, sha224, sha1
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import six
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import rfc6555
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from offlineimap import OfflineImapError
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from offlineimap.ui import getglobalui
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from imaplib2 import IMAP4, IMAP4_SSL, InternalDate
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@ -59,9 +57,8 @@ class UsefulIMAPMixIn:
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errstr = "Server '%s' closed connection, error on SELECT '%s'. Ser" \
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"ver said: %s" % (self.host, mailbox, e.args[0])
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severity = OfflineImapError.ERROR.FOLDER_RETRY
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six.reraise(OfflineImapError,
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OfflineImapError(errstr, severity),
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exc_info()[2])
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raise OfflineImapError(errstr, severity, exc_info()[2])
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|
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if result[0] != 'OK':
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# in case of error, bail out with OfflineImapError
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errstr = "Error SELECTing mailbox '%s', server reply:\n%s" % \
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@ -27,16 +27,12 @@ from socket import gaierror
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from sys import exc_info
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from ssl import SSLError, cert_time_to_seconds
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from threading import Lock, BoundedSemaphore, Thread, Event, currentThread
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|
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import six
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|
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import offlineimap.accounts
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from offlineimap import imaplibutil, imaputil, threadutil, OfflineImapError
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from offlineimap.ui import getglobalui
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try:
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import gssapi
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|
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have_gss = True
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except ImportError:
|
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have_gss = False
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@ -253,7 +249,8 @@ class IMAPServer():
|
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msg = "%s (configuration is: %s)" % (e, str(params))
|
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except Exception as eparams:
|
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msg = "%s [cannot display configuration: %s]" % (e, eparams)
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six.reraise(type(e), type(e)(msg), exc_info()[2])
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|
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raise type(e)(msg, exc_info()[2])
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finally:
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||||
socket.socket = original_socket
|
||||
|
||||
@ -633,9 +630,7 @@ class IMAPServer():
|
||||
"'%s'. Make sure you have configured the ser" \
|
||||
"ver name correctly and that you are online." % \
|
||||
(self.hostname, self.repos)
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(reason, severity),
|
||||
exc_info()[2])
|
||||
raise OfflineImapError(reason, severity, exc_info()[2])
|
||||
|
||||
elif isinstance(e, SSLError) and e.errno == errno.EPERM:
|
||||
# SSL unknown protocol error
|
||||
@ -649,9 +644,7 @@ class IMAPServer():
|
||||
reason = "Unknown SSL protocol connecting to host '%s' for " \
|
||||
"repository '%s'. OpenSSL responded:\n%s" \
|
||||
% (self.hostname, self.repos, e)
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(reason, severity),
|
||||
exc_info()[2])
|
||||
raise OfflineImapError(reason, severity, exc_info()[2])
|
||||
|
||||
elif isinstance(e, socket.error) and e.args[0] == errno.ECONNREFUSED:
|
||||
# "Connection refused", can be a non-existing port, or an unauthorized
|
||||
@ -660,17 +653,15 @@ class IMAPServer():
|
||||
"refused. Make sure you have the right host and port " \
|
||||
"configured and that you are actually able to access the " \
|
||||
"network." % (self.hostname, self.port, self.repos)
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(reason, severity),
|
||||
exc_info()[2])
|
||||
raise OfflineImapError(reason, severity, exc_info()[2])
|
||||
|
||||
# Could not acquire connection to the remote;
|
||||
# socket.error(last_error) raised
|
||||
if str(e)[:24] == "can't open socket; error":
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(
|
||||
raise OfflineImapError(
|
||||
"Could not connect to remote server '%s' "
|
||||
"for repository '%s'. Remote does not answer." % (self.hostname, self.repos),
|
||||
OfflineImapError.ERROR.REPO),
|
||||
OfflineImapError.ERROR.REPO,
|
||||
exc_info()[2])
|
||||
else:
|
||||
# re-raise all other errors
|
||||
|
||||
@ -21,9 +21,6 @@ import netrc
|
||||
import errno
|
||||
from sys import exc_info
|
||||
from threading import Event
|
||||
|
||||
import six
|
||||
|
||||
from offlineimap import folder, imaputil, imapserver, OfflineImapError
|
||||
from offlineimap.repository.Base import BaseRepository
|
||||
from offlineimap.threadutil import ExitNotifyThread
|
||||
@ -127,11 +124,10 @@ class IMAPRepository(BaseRepository):
|
||||
try:
|
||||
host = self.localeval.eval(host)
|
||||
except Exception as e:
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(
|
||||
raise OfflineImapError(
|
||||
"remotehosteval option for repository "
|
||||
"'%s' failed:\n%s" % (self, e),
|
||||
OfflineImapError.ERROR.REPO),
|
||||
OfflineImapError.ERROR.REPO,
|
||||
exc_info()[2])
|
||||
if host:
|
||||
self._host = host
|
||||
@ -549,7 +545,7 @@ class IMAPRepository(BaseRepository):
|
||||
if foldername == '':
|
||||
return
|
||||
|
||||
if self.getreference():
|
||||
if self.getreference() != '""':
|
||||
foldername = self.getreference() + self.getsep() + foldername
|
||||
if not foldername: # Create top level folder as folder separator.
|
||||
foldername = self.getsep()
|
||||
|
||||
@ -15,13 +15,7 @@
|
||||
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
|
||||
from sys import exc_info
|
||||
import six
|
||||
|
||||
try:
|
||||
from configparser import NoSectionError
|
||||
except ImportError: # python2
|
||||
from configparser import NoSectionError
|
||||
|
||||
from offlineimap.repository.IMAP import IMAPRepository, MappedIMAPRepository
|
||||
from offlineimap.repository.Gmail import GmailRepository
|
||||
from offlineimap.repository.Maildir import MaildirRepository
|
||||
@ -68,8 +62,7 @@ class Repository:
|
||||
except NoSectionError:
|
||||
errstr = ("Could not find section '%s' in configuration. Required "
|
||||
"for account '%s'." % ('Repository %s' % name, account))
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(errstr, OfflineImapError.ERROR.REPO),
|
||||
raise OfflineImapError(errstr, OfflineImapError.ERROR.REPO,
|
||||
exc_info()[2])
|
||||
|
||||
try:
|
||||
@ -77,8 +70,7 @@ class Repository:
|
||||
except KeyError:
|
||||
errstr = "'%s' repository not supported for '%s' repositories." % \
|
||||
(repostype, reqtype)
|
||||
six.reraise(OfflineImapError,
|
||||
OfflineImapError(errstr, OfflineImapError.ERROR.REPO),
|
||||
raise OfflineImapError(errstr, OfflineImapError.ERROR.REPO,
|
||||
exc_info()[2])
|
||||
|
||||
return repo(name, account)
|
||||
|
||||
@ -1,5 +1,4 @@
|
||||
# Requirements
|
||||
six
|
||||
gssapi[kerberos]
|
||||
portalocker[cygwin]
|
||||
rfc6555
|
||||
|
||||
315
rfc6555.py
315
rfc6555.py
@ -1,315 +0,0 @@
|
||||
""" Python implementation of the Happy Eyeballs Algorithm described in RFC 6555. """
|
||||
|
||||
# Copyright 2017 Seth Michael Larson
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
import errno
|
||||
import socket
|
||||
from selectors2 import DefaultSelector, EVENT_WRITE
|
||||
|
||||
# time.perf_counter() is defined in Python 3.3
|
||||
try:
|
||||
from time import perf_counter
|
||||
except (ImportError, AttributeError):
|
||||
from time import time as perf_counter
|
||||
|
||||
|
||||
# This list is due to socket.error and IOError not being a
|
||||
# subclass of OSError until later versions of Python.
|
||||
_SOCKET_ERRORS = (socket.error, OSError, IOError)
|
||||
|
||||
|
||||
# Detects whether an IPv6 socket can be allocated.
|
||||
def _detect_ipv6():
|
||||
if getattr(socket, 'has_ipv6', False) and hasattr(socket, 'AF_INET6'):
|
||||
_sock = None
|
||||
try:
|
||||
_sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
|
||||
_sock.bind(('::1', 0))
|
||||
return True
|
||||
except _SOCKET_ERRORS:
|
||||
if _sock:
|
||||
_sock.close()
|
||||
return False
|
||||
|
||||
|
||||
_HAS_IPV6 = _detect_ipv6()
|
||||
|
||||
# These are error numbers for asynchronous operations which can
|
||||
# be safely ignored by RFC 6555 as being non-errors.
|
||||
_ASYNC_ERRNOS = set([errno.EINPROGRESS,
|
||||
errno.EAGAIN,
|
||||
errno.EWOULDBLOCK])
|
||||
if hasattr(errno, 'WSAWOULDBLOCK'):
|
||||
_ASYNC_ERRNOS.add(errno.WSAWOULDBLOCK)
|
||||
|
||||
_DEFAULT_CACHE_DURATION = 60 * 10 # 10 minutes according to the RFC.
|
||||
|
||||
# This value that can be used to disable RFC 6555 globally.
|
||||
RFC6555_ENABLED = _HAS_IPV6
|
||||
|
||||
__all__ = ['RFC6555_ENABLED',
|
||||
'create_connection',
|
||||
'cache']
|
||||
|
||||
__version__ = '0.0.0'
|
||||
__author__ = 'Seth Michael Larson'
|
||||
__email__ = 'sethmichaellarson@protonmail.com'
|
||||
__license__ = 'Apache-2.0'
|
||||
|
||||
|
||||
class _RFC6555CacheManager(object):
|
||||
def __init__(self):
|
||||
self.validity_duration = _DEFAULT_CACHE_DURATION
|
||||
self.enabled = True
|
||||
self.entries = {}
|
||||
|
||||
def add_entry(self, address, family):
|
||||
if self.enabled:
|
||||
current_time = perf_counter()
|
||||
|
||||
# Don't over-write old entries to reset their expiry.
|
||||
if address not in self.entries or self.entries[address][1] > current_time:
|
||||
self.entries[address] = (family, current_time + self.validity_duration)
|
||||
|
||||
def get_entry(self, address):
|
||||
if not self.enabled or address not in self.entries:
|
||||
return None
|
||||
|
||||
family, expiry = self.entries[address]
|
||||
if perf_counter() > expiry:
|
||||
del self.entries[address]
|
||||
return None
|
||||
|
||||
return family
|
||||
|
||||
|
||||
cache = _RFC6555CacheManager()
|
||||
|
||||
|
||||
class _RFC6555ConnectionManager(object):
|
||||
def __init__(self, address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, source_address=None):
|
||||
self.address = address
|
||||
self.timeout = timeout
|
||||
self.source_address = source_address
|
||||
|
||||
self._error = None
|
||||
self._selector = DefaultSelector()
|
||||
self._sockets = []
|
||||
self._start_time = None
|
||||
|
||||
def create_connection(self):
|
||||
self._start_time = perf_counter()
|
||||
|
||||
host, port = self.address
|
||||
addr_info = socket.getaddrinfo(host, port, socket.AF_UNSPEC, socket.SOCK_STREAM)
|
||||
ret = self._connect_with_cached_family(addr_info)
|
||||
|
||||
# If it's a list, then these are the remaining values to try.
|
||||
if isinstance(ret, list):
|
||||
addr_info = ret
|
||||
else:
|
||||
cache.add_entry(self.address, ret.family)
|
||||
return ret
|
||||
|
||||
# If we don't get any results back then just skip to the end.
|
||||
if not addr_info:
|
||||
raise socket.error('getaddrinfo returns an empty list')
|
||||
|
||||
sock = self._attempt_connect_with_addr_info(addr_info)
|
||||
|
||||
if sock:
|
||||
cache.add_entry(self.address, sock.family)
|
||||
return sock
|
||||
elif self._error:
|
||||
raise self._error
|
||||
else:
|
||||
raise socket.timeout()
|
||||
|
||||
def _attempt_connect_with_addr_info(self, addr_info):
|
||||
sock = None
|
||||
try:
|
||||
for family, socktype, proto, _, sockaddr in addr_info:
|
||||
self._create_socket(family, socktype, proto, sockaddr)
|
||||
sock = self._wait_for_connection(False)
|
||||
if sock:
|
||||
break
|
||||
if sock is None:
|
||||
sock = self._wait_for_connection(True)
|
||||
finally:
|
||||
self._remove_all_sockets()
|
||||
return sock
|
||||
|
||||
def _connect_with_cached_family(self, addr_info):
|
||||
family = cache.get_entry(self.address)
|
||||
if family is None:
|
||||
return addr_info
|
||||
|
||||
is_family = []
|
||||
not_family = []
|
||||
|
||||
for value in addr_info:
|
||||
if value[0] == family:
|
||||
is_family.append(value)
|
||||
else:
|
||||
not_family.append(value)
|
||||
|
||||
sock = self._attempt_connect_with_addr_info(is_family)
|
||||
if sock is not None:
|
||||
return sock
|
||||
|
||||
return not_family
|
||||
|
||||
def _create_socket(self, family, socktype, proto, sockaddr):
|
||||
sock = None
|
||||
try:
|
||||
sock = socket.socket(family, socktype, proto)
|
||||
|
||||
# If we're using the 'default' socket timeout we have
|
||||
# to set it to a real value here as this is the earliest
|
||||
# opportunity to without pre-allocating a socket just for
|
||||
# this purpose.
|
||||
if self.timeout is socket._GLOBAL_DEFAULT_TIMEOUT:
|
||||
self.timeout = sock.gettimeout()
|
||||
|
||||
if self.source_address:
|
||||
sock.bind(self.source_address)
|
||||
|
||||
# Make the socket non-blocking so we can use our selector.
|
||||
sock.settimeout(0.0)
|
||||
|
||||
if self._is_acceptable_errno(sock.connect_ex(sockaddr)):
|
||||
self._selector.register(sock, EVENT_WRITE)
|
||||
self._sockets.append(sock)
|
||||
|
||||
except _SOCKET_ERRORS as e:
|
||||
self._error = e
|
||||
if sock is not None:
|
||||
_RFC6555ConnectionManager._close_socket(sock)
|
||||
|
||||
def _wait_for_connection(self, last_wait):
|
||||
self._remove_all_errored_sockets()
|
||||
|
||||
# This is a safe-guard to make sure sock.gettimeout() is called in the
|
||||
# case that the default socket timeout is used. If there are no
|
||||
# sockets then we may not have called sock.gettimeout() yet.
|
||||
if not self._sockets:
|
||||
return None
|
||||
|
||||
# If this is the last time we're waiting for connections
|
||||
# then we should wait until we should raise a timeout
|
||||
# error, otherwise we should only wait >0.2 seconds as
|
||||
# recommended by RFC 6555.
|
||||
if last_wait:
|
||||
if self.timeout is None:
|
||||
select_timeout = None
|
||||
else:
|
||||
select_timeout = self._get_remaining_time()
|
||||
else:
|
||||
select_timeout = self._get_select_time()
|
||||
|
||||
# Wait for any socket to become writable as a sign of being connected.
|
||||
for key, _ in self._selector.select(select_timeout):
|
||||
sock = key.fileobj
|
||||
|
||||
if not self._is_socket_errored(sock):
|
||||
|
||||
# Restore the old proper timeout of the socket.
|
||||
sock.settimeout(self.timeout)
|
||||
|
||||
# Remove it from this list to exempt the socket from cleanup.
|
||||
self._sockets.remove(sock)
|
||||
self._selector.unregister(sock)
|
||||
return sock
|
||||
|
||||
return None
|
||||
|
||||
def _get_remaining_time(self):
|
||||
if self.timeout is None:
|
||||
return None
|
||||
return max(self.timeout - (perf_counter() - self._start_time), 0.0)
|
||||
|
||||
def _get_select_time(self):
|
||||
if self.timeout is None:
|
||||
return 0.2
|
||||
return min(0.2, self._get_remaining_time())
|
||||
|
||||
def _remove_all_errored_sockets(self):
|
||||
socks = []
|
||||
for sock in self._sockets:
|
||||
if self._is_socket_errored(sock):
|
||||
socks.append(sock)
|
||||
for sock in socks:
|
||||
self._selector.unregister(sock)
|
||||
self._sockets.remove(sock)
|
||||
_RFC6555ConnectionManager._close_socket(sock)
|
||||
|
||||
@staticmethod
|
||||
def _close_socket(sock):
|
||||
try:
|
||||
sock.close()
|
||||
except _SOCKET_ERRORS:
|
||||
pass
|
||||
|
||||
def _is_acceptable_errno(self, errno):
|
||||
if errno == 0 or errno in _ASYNC_ERRNOS:
|
||||
return True
|
||||
self._error = socket.error()
|
||||
self._error.errno = errno
|
||||
return False
|
||||
|
||||
def _is_socket_errored(self, sock):
|
||||
errno = sock.getsockopt(socket.SOL_SOCKET, socket.SO_ERROR)
|
||||
return not self._is_acceptable_errno(errno)
|
||||
|
||||
def _remove_all_sockets(self):
|
||||
for sock in self._sockets:
|
||||
self._selector.unregister(sock)
|
||||
_RFC6555ConnectionManager._close_socket(sock)
|
||||
self._sockets = []
|
||||
|
||||
|
||||
def create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, source_address=None):
|
||||
if RFC6555_ENABLED and _HAS_IPV6:
|
||||
manager = _RFC6555ConnectionManager(address, timeout, source_address)
|
||||
return manager.create_connection()
|
||||
else:
|
||||
# This code is the same as socket.create_connection() but is
|
||||
# here to make sure the same code is used across all Python versions as
|
||||
# the source_address parameter was added to socket.create_connection() in 3.2
|
||||
# This segment of code is licensed under the Python Software Foundation License
|
||||
# See LICENSE: https://github.com/python/cpython/blob/3.6/LICENSE
|
||||
host, port = address
|
||||
err = None
|
||||
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
|
||||
af, socktype, proto, canonname, sa = res
|
||||
sock = None
|
||||
try:
|
||||
sock = socket.socket(af, socktype, proto)
|
||||
if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:
|
||||
sock.settimeout(timeout)
|
||||
if source_address:
|
||||
sock.bind(source_address)
|
||||
sock.connect(sa)
|
||||
return sock
|
||||
|
||||
except socket.error as _:
|
||||
err = _
|
||||
if sock is not None:
|
||||
sock.close()
|
||||
|
||||
if err is not None:
|
||||
raise err
|
||||
else:
|
||||
raise socket.error("getaddrinfo returns an empty list")
|
||||
747
selectors2.py
747
selectors2.py
@ -1,747 +0,0 @@
|
||||
""" Back-ported, durable, and portable selectors """
|
||||
|
||||
# MIT License
|
||||
#
|
||||
# Copyright (c) 2017 Seth Michael Larson
|
||||
#
|
||||
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
# of this software and associated documentation files (the "Software"), to deal
|
||||
# in the Software without restriction, including without limitation the rights
|
||||
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
# copies of the Software, and to permit persons to whom the Software is
|
||||
# furnished to do so, subject to the following conditions:
|
||||
#
|
||||
# The above copyright notice and this permission notice shall be included in all
|
||||
# copies or substantial portions of the Software.
|
||||
#
|
||||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
# SOFTWARE.
|
||||
|
||||
from collections import namedtuple, Mapping
|
||||
import errno
|
||||
import math
|
||||
import platform
|
||||
import select
|
||||
import socket
|
||||
import sys
|
||||
import time
|
||||
|
||||
try:
|
||||
monotonic = time.monotonic
|
||||
except AttributeError:
|
||||
monotonic = time.time
|
||||
|
||||
__author__ = 'Seth Michael Larson'
|
||||
__email__ = 'sethmichaellarson@protonmail.com'
|
||||
__version__ = '2.0.2'
|
||||
__license__ = 'MIT'
|
||||
__url__ = 'https://www.github.com/SethMichaelLarson/selectors2'
|
||||
|
||||
__all__ = ['EVENT_READ',
|
||||
'EVENT_WRITE',
|
||||
'SelectorKey',
|
||||
'DefaultSelector',
|
||||
'BaseSelector']
|
||||
|
||||
EVENT_READ = (1 << 0)
|
||||
EVENT_WRITE = (1 << 1)
|
||||
_DEFAULT_SELECTOR = None
|
||||
_SYSCALL_SENTINEL = object() # Sentinel in case a system call returns None.
|
||||
_ERROR_TYPES = (OSError, IOError, socket.error)
|
||||
|
||||
try:
|
||||
_INTEGER_TYPES = (int, long)
|
||||
except NameError:
|
||||
_INTEGER_TYPES = (int,)
|
||||
|
||||
|
||||
SelectorKey = namedtuple('SelectorKey', ['fileobj', 'fd', 'events', 'data'])
|
||||
|
||||
|
||||
class _SelectorMapping(Mapping):
|
||||
""" Mapping of file objects to selector keys """
|
||||
|
||||
def __init__(self, selector):
|
||||
self._selector = selector
|
||||
|
||||
def __len__(self):
|
||||
return len(self._selector._fd_to_key)
|
||||
|
||||
def __getitem__(self, fileobj):
|
||||
try:
|
||||
fd = self._selector._fileobj_lookup(fileobj)
|
||||
return self._selector._fd_to_key[fd]
|
||||
except KeyError:
|
||||
raise KeyError("{0!r} is not registered.".format(fileobj))
|
||||
|
||||
def __iter__(self):
|
||||
return iter(self._selector._fd_to_key)
|
||||
|
||||
|
||||
def _fileobj_to_fd(fileobj):
|
||||
""" Return a file descriptor from a file object. If
|
||||
given an integer will simply return that integer back. """
|
||||
if isinstance(fileobj, _INTEGER_TYPES):
|
||||
fd = fileobj
|
||||
else:
|
||||
for _integer_type in _INTEGER_TYPES:
|
||||
try:
|
||||
fd = _integer_type(fileobj.fileno())
|
||||
break
|
||||
except (AttributeError, TypeError, ValueError):
|
||||
continue
|
||||
else:
|
||||
raise ValueError("Invalid file object: {0!r}".format(fileobj))
|
||||
if fd < 0:
|
||||
raise ValueError("Invalid file descriptor: {0}".format(fd))
|
||||
return fd
|
||||
|
||||
|
||||
class BaseSelector(object):
|
||||
""" Abstract Selector class
|
||||
|
||||
A selector supports registering file objects to be monitored
|
||||
for specific I/O events.
|
||||
|
||||
A file object is a file descriptor or any object with a
|
||||
`fileno()` method. An arbitrary object can be attached to the
|
||||
file object which can be used for example to store context info,
|
||||
a callback, etc.
|
||||
|
||||
A selector can use various implementations (select(), poll(), epoll(),
|
||||
and kqueue()) depending on the platform. The 'DefaultSelector' class uses
|
||||
the most efficient implementation for the current platform.
|
||||
"""
|
||||
def __init__(self):
|
||||
# Maps file descriptors to keys.
|
||||
self._fd_to_key = {}
|
||||
|
||||
# Read-only mapping returned by get_map()
|
||||
self._map = _SelectorMapping(self)
|
||||
|
||||
def _fileobj_lookup(self, fileobj):
|
||||
""" Return a file descriptor from a file object.
|
||||
This wraps _fileobj_to_fd() to do an exhaustive
|
||||
search in case the object is invalid but we still
|
||||
have it in our map. Used by unregister() so we can
|
||||
unregister an object that was previously registered
|
||||
even if it is closed. It is also used by _SelectorMapping
|
||||
"""
|
||||
try:
|
||||
return _fileobj_to_fd(fileobj)
|
||||
except ValueError:
|
||||
|
||||
# Search through all our mapped keys.
|
||||
for key in self._fd_to_key.values():
|
||||
if key.fileobj is fileobj:
|
||||
return key.fd
|
||||
|
||||
# Raise ValueError after all.
|
||||
raise
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
""" Register a file object for a set of events to monitor. """
|
||||
if (not events) or (events & ~(EVENT_READ | EVENT_WRITE)):
|
||||
raise ValueError("Invalid events: {0!r}".format(events))
|
||||
|
||||
key = SelectorKey(fileobj, self._fileobj_lookup(fileobj), events, data)
|
||||
|
||||
if key.fd in self._fd_to_key:
|
||||
raise KeyError("{0!r} (FD {1}) is already registered"
|
||||
.format(fileobj, key.fd))
|
||||
|
||||
self._fd_to_key[key.fd] = key
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
""" Unregister a file object from being monitored. """
|
||||
try:
|
||||
key = self._fd_to_key.pop(self._fileobj_lookup(fileobj))
|
||||
except KeyError:
|
||||
raise KeyError("{0!r} is not registered".format(fileobj))
|
||||
|
||||
# Getting the fileno of a closed socket on Windows errors with EBADF.
|
||||
except socket.error as err:
|
||||
if err.errno != errno.EBADF:
|
||||
raise
|
||||
else:
|
||||
for key in self._fd_to_key.values():
|
||||
if key.fileobj is fileobj:
|
||||
self._fd_to_key.pop(key.fd)
|
||||
break
|
||||
else:
|
||||
raise KeyError("{0!r} is not registered".format(fileobj))
|
||||
return key
|
||||
|
||||
def modify(self, fileobj, events, data=None):
|
||||
""" Change a registered file object monitored events and data. """
|
||||
# NOTE: Some subclasses optimize this operation even further.
|
||||
try:
|
||||
key = self._fd_to_key[self._fileobj_lookup(fileobj)]
|
||||
except KeyError:
|
||||
raise KeyError("{0!r} is not registered".format(fileobj))
|
||||
|
||||
if events != key.events:
|
||||
self.unregister(fileobj)
|
||||
key = self.register(fileobj, events, data)
|
||||
|
||||
elif data != key.data:
|
||||
# Use a shortcut to update the data.
|
||||
key = key._replace(data=data)
|
||||
self._fd_to_key[key.fd] = key
|
||||
|
||||
return key
|
||||
|
||||
def select(self, timeout=None):
|
||||
""" Perform the actual selection until some monitored file objects
|
||||
are ready or the timeout expires. """
|
||||
raise NotImplementedError()
|
||||
|
||||
def close(self):
|
||||
""" Close the selector. This must be called to ensure that all
|
||||
underlying resources are freed. """
|
||||
self._fd_to_key.clear()
|
||||
self._map = None
|
||||
|
||||
def get_key(self, fileobj):
|
||||
""" Return the key associated with a registered file object. """
|
||||
mapping = self.get_map()
|
||||
if mapping is None:
|
||||
raise RuntimeError("Selector is closed")
|
||||
try:
|
||||
return mapping[fileobj]
|
||||
except KeyError:
|
||||
raise KeyError("{0!r} is not registered".format(fileobj))
|
||||
|
||||
def get_map(self):
|
||||
""" Return a mapping of file objects to selector keys """
|
||||
return self._map
|
||||
|
||||
def _key_from_fd(self, fd):
|
||||
""" Return the key associated to a given file descriptor
|
||||
Return None if it is not found. """
|
||||
try:
|
||||
return self._fd_to_key[fd]
|
||||
except KeyError:
|
||||
return None
|
||||
|
||||
def __enter__(self):
|
||||
return self
|
||||
|
||||
def __exit__(self, *_):
|
||||
self.close()
|
||||
|
||||
|
||||
# Almost all platforms have select.select()
|
||||
if hasattr(select, "select"):
|
||||
class SelectSelector(BaseSelector):
|
||||
""" Select-based selector. """
|
||||
def __init__(self):
|
||||
super(SelectSelector, self).__init__()
|
||||
self._readers = set()
|
||||
self._writers = set()
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
key = super(SelectSelector, self).register(fileobj, events, data)
|
||||
if events & EVENT_READ:
|
||||
self._readers.add(key.fd)
|
||||
if events & EVENT_WRITE:
|
||||
self._writers.add(key.fd)
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
key = super(SelectSelector, self).unregister(fileobj)
|
||||
self._readers.discard(key.fd)
|
||||
self._writers.discard(key.fd)
|
||||
return key
|
||||
|
||||
def select(self, timeout=None):
|
||||
# Selecting on empty lists on Windows errors out.
|
||||
if not len(self._readers) and not len(self._writers):
|
||||
return []
|
||||
|
||||
timeout = None if timeout is None else max(timeout, 0.0)
|
||||
ready = []
|
||||
r, w, _ = _syscall_wrapper(self._wrap_select, True, self._readers,
|
||||
self._writers, timeout=timeout)
|
||||
r = set(r)
|
||||
w = set(w)
|
||||
for fd in r | w:
|
||||
events = 0
|
||||
if fd in r:
|
||||
events |= EVENT_READ
|
||||
if fd in w:
|
||||
events |= EVENT_WRITE
|
||||
|
||||
key = self._key_from_fd(fd)
|
||||
if key:
|
||||
ready.append((key, events & key.events))
|
||||
return ready
|
||||
|
||||
def _wrap_select(self, r, w, timeout=None):
|
||||
""" Wrapper for select.select because timeout is a positional arg """
|
||||
return select.select(r, w, [], timeout)
|
||||
|
||||
__all__.append('SelectSelector')
|
||||
|
||||
# Jython has a different implementation of .fileno() for socket objects.
|
||||
if platform.python_implementation() == 'Jython':
|
||||
class _JythonSelectorMapping(object):
|
||||
""" This is an implementation of _SelectorMapping that is built
|
||||
for use specifically with Jython, which does not provide a hashable
|
||||
value from socket.socket.fileno(). """
|
||||
|
||||
def __init__(self, selector):
|
||||
assert isinstance(selector, JythonSelectSelector)
|
||||
self._selector = selector
|
||||
|
||||
def __len__(self):
|
||||
return len(self._selector._sockets)
|
||||
|
||||
def __getitem__(self, fileobj):
|
||||
for sock, key in self._selector._sockets:
|
||||
if sock is fileobj:
|
||||
return key
|
||||
else:
|
||||
raise KeyError("{0!r} is not registered.".format(fileobj))
|
||||
|
||||
class JythonSelectSelector(SelectSelector):
|
||||
""" This is an implementation of SelectSelector that is for Jython
|
||||
which works around that Jython's socket.socket.fileno() does not
|
||||
return an integer fd value. All SelectorKey.fd will be equal to -1
|
||||
and should not be used. This instead uses object id to compare fileobj
|
||||
and will only use select.select as it's the only selector that allows
|
||||
directly passing in socket objects rather than registering fds.
|
||||
See: http://bugs.jython.org/issue1678
|
||||
https://wiki.python.org/jython/NewSocketModule#socket.fileno.28.29_does_not_return_an_integer
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
super(JythonSelectSelector, self).__init__()
|
||||
|
||||
self._sockets = [] # Uses a list of tuples instead of dictionary.
|
||||
self._map = _JythonSelectorMapping(self)
|
||||
self._readers = []
|
||||
self._writers = []
|
||||
|
||||
# Jython has a select.cpython_compatible_select function in older versions.
|
||||
self._select_func = getattr(select, 'cpython_compatible_select', select.select)
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
for sock, _ in self._sockets:
|
||||
if sock is fileobj:
|
||||
raise KeyError("{0!r} is already registered"
|
||||
.format(fileobj, sock))
|
||||
|
||||
key = SelectorKey(fileobj, -1, events, data)
|
||||
self._sockets.append((fileobj, key))
|
||||
|
||||
if events & EVENT_READ:
|
||||
self._readers.append(fileobj)
|
||||
if events & EVENT_WRITE:
|
||||
self._writers.append(fileobj)
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
for i, (sock, key) in enumerate(self._sockets):
|
||||
if sock is fileobj:
|
||||
break
|
||||
else:
|
||||
raise KeyError("{0!r} is not registered.".format(fileobj))
|
||||
|
||||
if key.events & EVENT_READ:
|
||||
self._readers.remove(fileobj)
|
||||
if key.events & EVENT_WRITE:
|
||||
self._writers.remove(fileobj)
|
||||
|
||||
del self._sockets[i]
|
||||
return key
|
||||
|
||||
def _wrap_select(self, r, w, timeout=None):
|
||||
""" Wrapper for select.select because timeout is a positional arg """
|
||||
return self._select_func(r, w, [], timeout)
|
||||
|
||||
__all__.append('JythonSelectSelector')
|
||||
SelectSelector = JythonSelectSelector # Override so the wrong selector isn't used.
|
||||
|
||||
|
||||
if hasattr(select, "poll"):
|
||||
class PollSelector(BaseSelector):
|
||||
""" Poll-based selector """
|
||||
def __init__(self):
|
||||
super(PollSelector, self).__init__()
|
||||
self._poll = select.poll()
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
key = super(PollSelector, self).register(fileobj, events, data)
|
||||
event_mask = 0
|
||||
if events & EVENT_READ:
|
||||
event_mask |= select.POLLIN
|
||||
if events & EVENT_WRITE:
|
||||
event_mask |= select.POLLOUT
|
||||
self._poll.register(key.fd, event_mask)
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
key = super(PollSelector, self).unregister(fileobj)
|
||||
self._poll.unregister(key.fd)
|
||||
return key
|
||||
|
||||
def _wrap_poll(self, timeout=None):
|
||||
""" Wrapper function for select.poll.poll() so that
|
||||
_syscall_wrapper can work with only seconds. """
|
||||
if timeout is not None:
|
||||
if timeout <= 0:
|
||||
timeout = 0
|
||||
else:
|
||||
# select.poll.poll() has a resolution of 1 millisecond,
|
||||
# round away from zero to wait *at least* timeout seconds.
|
||||
timeout = math.ceil(timeout * 1000)
|
||||
|
||||
result = self._poll.poll(timeout)
|
||||
return result
|
||||
|
||||
def select(self, timeout=None):
|
||||
ready = []
|
||||
fd_events = _syscall_wrapper(self._wrap_poll, True, timeout=timeout)
|
||||
for fd, event_mask in fd_events:
|
||||
events = 0
|
||||
if event_mask & ~select.POLLIN:
|
||||
events |= EVENT_WRITE
|
||||
if event_mask & ~select.POLLOUT:
|
||||
events |= EVENT_READ
|
||||
|
||||
key = self._key_from_fd(fd)
|
||||
if key:
|
||||
ready.append((key, events & key.events))
|
||||
|
||||
return ready
|
||||
|
||||
__all__.append('PollSelector')
|
||||
|
||||
if hasattr(select, "epoll"):
|
||||
class EpollSelector(BaseSelector):
|
||||
""" Epoll-based selector """
|
||||
def __init__(self):
|
||||
super(EpollSelector, self).__init__()
|
||||
self._epoll = select.epoll()
|
||||
|
||||
def fileno(self):
|
||||
return self._epoll.fileno()
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
key = super(EpollSelector, self).register(fileobj, events, data)
|
||||
events_mask = 0
|
||||
if events & EVENT_READ:
|
||||
events_mask |= select.EPOLLIN
|
||||
if events & EVENT_WRITE:
|
||||
events_mask |= select.EPOLLOUT
|
||||
_syscall_wrapper(self._epoll.register, False, key.fd, events_mask)
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
key = super(EpollSelector, self).unregister(fileobj)
|
||||
try:
|
||||
_syscall_wrapper(self._epoll.unregister, False, key.fd)
|
||||
except _ERROR_TYPES:
|
||||
# This can occur when the fd was closed since registry.
|
||||
pass
|
||||
return key
|
||||
|
||||
def select(self, timeout=None):
|
||||
if timeout is not None:
|
||||
if timeout <= 0:
|
||||
timeout = 0.0
|
||||
else:
|
||||
# select.epoll.poll() has a resolution of 1 millisecond
|
||||
# but luckily takes seconds so we don't need a wrapper
|
||||
# like PollSelector. Just for better rounding.
|
||||
timeout = math.ceil(timeout * 1000) * 0.001
|
||||
timeout = float(timeout)
|
||||
else:
|
||||
timeout = -1.0 # epoll.poll() must have a float.
|
||||
|
||||
# We always want at least 1 to ensure that select can be called
|
||||
# with no file descriptors registered. Otherwise will fail.
|
||||
max_events = max(len(self._fd_to_key), 1)
|
||||
|
||||
ready = []
|
||||
fd_events = _syscall_wrapper(self._epoll.poll, True,
|
||||
timeout=timeout,
|
||||
maxevents=max_events)
|
||||
for fd, event_mask in fd_events:
|
||||
events = 0
|
||||
if event_mask & ~select.EPOLLIN:
|
||||
events |= EVENT_WRITE
|
||||
if event_mask & ~select.EPOLLOUT:
|
||||
events |= EVENT_READ
|
||||
|
||||
key = self._key_from_fd(fd)
|
||||
if key:
|
||||
ready.append((key, events & key.events))
|
||||
return ready
|
||||
|
||||
def close(self):
|
||||
self._epoll.close()
|
||||
super(EpollSelector, self).close()
|
||||
|
||||
__all__.append('EpollSelector')
|
||||
|
||||
|
||||
if hasattr(select, "devpoll"):
|
||||
class DevpollSelector(BaseSelector):
|
||||
"""Solaris /dev/poll selector."""
|
||||
|
||||
def __init__(self):
|
||||
super(DevpollSelector, self).__init__()
|
||||
self._devpoll = select.devpoll()
|
||||
|
||||
def fileno(self):
|
||||
return self._devpoll.fileno()
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
key = super(DevpollSelector, self).register(fileobj, events, data)
|
||||
poll_events = 0
|
||||
if events & EVENT_READ:
|
||||
poll_events |= select.POLLIN
|
||||
if events & EVENT_WRITE:
|
||||
poll_events |= select.POLLOUT
|
||||
self._devpoll.register(key.fd, poll_events)
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
key = super(DevpollSelector, self).unregister(fileobj)
|
||||
self._devpoll.unregister(key.fd)
|
||||
return key
|
||||
|
||||
def _wrap_poll(self, timeout=None):
|
||||
""" Wrapper function for select.poll.poll() so that
|
||||
_syscall_wrapper can work with only seconds. """
|
||||
if timeout is not None:
|
||||
if timeout <= 0:
|
||||
timeout = 0
|
||||
else:
|
||||
# select.devpoll.poll() has a resolution of 1 millisecond,
|
||||
# round away from zero to wait *at least* timeout seconds.
|
||||
timeout = math.ceil(timeout * 1000)
|
||||
|
||||
result = self._devpoll.poll(timeout)
|
||||
return result
|
||||
|
||||
def select(self, timeout=None):
|
||||
ready = []
|
||||
fd_events = _syscall_wrapper(self._wrap_poll, True, timeout=timeout)
|
||||
for fd, event_mask in fd_events:
|
||||
events = 0
|
||||
if event_mask & ~select.POLLIN:
|
||||
events |= EVENT_WRITE
|
||||
if event_mask & ~select.POLLOUT:
|
||||
events |= EVENT_READ
|
||||
|
||||
key = self._key_from_fd(fd)
|
||||
if key:
|
||||
ready.append((key, events & key.events))
|
||||
|
||||
return ready
|
||||
|
||||
def close(self):
|
||||
self._devpoll.close()
|
||||
super(DevpollSelector, self).close()
|
||||
|
||||
__all__.append('DevpollSelector')
|
||||
|
||||
|
||||
if hasattr(select, "kqueue"):
|
||||
class KqueueSelector(BaseSelector):
|
||||
""" Kqueue / Kevent-based selector """
|
||||
def __init__(self):
|
||||
super(KqueueSelector, self).__init__()
|
||||
self._kqueue = select.kqueue()
|
||||
|
||||
def fileno(self):
|
||||
return self._kqueue.fileno()
|
||||
|
||||
def register(self, fileobj, events, data=None):
|
||||
key = super(KqueueSelector, self).register(fileobj, events, data)
|
||||
if events & EVENT_READ:
|
||||
kevent = select.kevent(key.fd,
|
||||
select.KQ_FILTER_READ,
|
||||
select.KQ_EV_ADD)
|
||||
|
||||
_syscall_wrapper(self._wrap_control, False, [kevent], 0, 0)
|
||||
|
||||
if events & EVENT_WRITE:
|
||||
kevent = select.kevent(key.fd,
|
||||
select.KQ_FILTER_WRITE,
|
||||
select.KQ_EV_ADD)
|
||||
|
||||
_syscall_wrapper(self._wrap_control, False, [kevent], 0, 0)
|
||||
|
||||
return key
|
||||
|
||||
def unregister(self, fileobj):
|
||||
key = super(KqueueSelector, self).unregister(fileobj)
|
||||
if key.events & EVENT_READ:
|
||||
kevent = select.kevent(key.fd,
|
||||
select.KQ_FILTER_READ,
|
||||
select.KQ_EV_DELETE)
|
||||
try:
|
||||
_syscall_wrapper(self._wrap_control, False, [kevent], 0, 0)
|
||||
except _ERROR_TYPES:
|
||||
pass
|
||||
if key.events & EVENT_WRITE:
|
||||
kevent = select.kevent(key.fd,
|
||||
select.KQ_FILTER_WRITE,
|
||||
select.KQ_EV_DELETE)
|
||||
try:
|
||||
_syscall_wrapper(self._wrap_control, False, [kevent], 0, 0)
|
||||
except _ERROR_TYPES:
|
||||
pass
|
||||
|
||||
return key
|
||||
|
||||
def select(self, timeout=None):
|
||||
if timeout is not None:
|
||||
timeout = max(timeout, 0)
|
||||
|
||||
max_events = len(self._fd_to_key) * 2
|
||||
ready_fds = {}
|
||||
|
||||
kevent_list = _syscall_wrapper(self._wrap_control, True,
|
||||
None, max_events, timeout=timeout)
|
||||
|
||||
for kevent in kevent_list:
|
||||
fd = kevent.ident
|
||||
event_mask = kevent.filter
|
||||
events = 0
|
||||
if event_mask == select.KQ_FILTER_READ:
|
||||
events |= EVENT_READ
|
||||
if event_mask == select.KQ_FILTER_WRITE:
|
||||
events |= EVENT_WRITE
|
||||
|
||||
key = self._key_from_fd(fd)
|
||||
if key:
|
||||
if key.fd not in ready_fds:
|
||||
ready_fds[key.fd] = (key, events & key.events)
|
||||
else:
|
||||
old_events = ready_fds[key.fd][1]
|
||||
ready_fds[key.fd] = (key, (events | old_events) & key.events)
|
||||
|
||||
return list(ready_fds.values())
|
||||
|
||||
def close(self):
|
||||
self._kqueue.close()
|
||||
super(KqueueSelector, self).close()
|
||||
|
||||
def _wrap_control(self, changelist, max_events, timeout):
|
||||
return self._kqueue.control(changelist, max_events, timeout)
|
||||
|
||||
__all__.append('KqueueSelector')
|
||||
|
||||
|
||||
def _can_allocate(struct):
|
||||
""" Checks that select structs can be allocated by the underlying
|
||||
operating system, not just advertised by the select module. We don't
|
||||
check select() because we'll be hopeful that most platforms that
|
||||
don't have it available will not advertise it. (ie: GAE) """
|
||||
try:
|
||||
# select.poll() objects won't fail until used.
|
||||
if struct == 'poll':
|
||||
p = select.poll()
|
||||
p.poll(0)
|
||||
|
||||
# All others will fail on allocation.
|
||||
else:
|
||||
getattr(select, struct)().close()
|
||||
return True
|
||||
except (OSError, AttributeError):
|
||||
return False
|
||||
|
||||
|
||||
# Python 3.5 uses a more direct route to wrap system calls to increase speed.
|
||||
if sys.version_info >= (3, 5):
|
||||
def _syscall_wrapper(func, _, *args, **kwargs):
|
||||
""" This is the short-circuit version of the below logic
|
||||
because in Python 3.5+ all selectors restart system calls. """
|
||||
return func(*args, **kwargs)
|
||||
else:
|
||||
def _syscall_wrapper(func, recalc_timeout, *args, **kwargs):
|
||||
""" Wrapper function for syscalls that could fail due to EINTR.
|
||||
All functions should be retried if there is time left in the timeout
|
||||
in accordance with PEP 475. """
|
||||
timeout = kwargs.get("timeout", None)
|
||||
if timeout is None:
|
||||
expires = None
|
||||
recalc_timeout = False
|
||||
else:
|
||||
timeout = float(timeout)
|
||||
if timeout < 0.0: # Timeout less than 0 treated as no timeout.
|
||||
expires = None
|
||||
else:
|
||||
expires = monotonic() + timeout
|
||||
|
||||
if recalc_timeout and 'timeout' not in kwargs:
|
||||
raise ValueError(
|
||||
'Timeout must be in kwargs to be recalculated')
|
||||
|
||||
result = _SYSCALL_SENTINEL
|
||||
while result is _SYSCALL_SENTINEL:
|
||||
try:
|
||||
result = func(*args, **kwargs)
|
||||
# OSError is thrown by select.select
|
||||
# IOError is thrown by select.epoll.poll
|
||||
# select.error is thrown by select.poll.poll
|
||||
# Aren't we thankful for Python 3.x rework for exceptions?
|
||||
except (OSError, IOError, select.error) as e:
|
||||
# select.error wasn't a subclass of OSError in the past.
|
||||
errcode = None
|
||||
if hasattr(e, 'errno') and e.errno is not None:
|
||||
errcode = e.errno
|
||||
elif hasattr(e, 'args'):
|
||||
errcode = e.args[0]
|
||||
|
||||
# Also test for the Windows equivalent of EINTR.
|
||||
is_interrupt = (errcode == errno.EINTR or (hasattr(errno, 'WSAEINTR') and
|
||||
errcode == errno.WSAEINTR))
|
||||
|
||||
if is_interrupt:
|
||||
if expires is not None:
|
||||
current_time = monotonic()
|
||||
if current_time > expires:
|
||||
raise OSError(errno.ETIMEDOUT, 'Connection timed out')
|
||||
if recalc_timeout:
|
||||
kwargs["timeout"] = expires - current_time
|
||||
continue
|
||||
raise
|
||||
return result
|
||||
|
||||
|
||||
# Choose the best implementation, roughly:
|
||||
# kqueue == devpoll == epoll > poll > select
|
||||
# select() also can't accept a FD > FD_SETSIZE (usually around 1024)
|
||||
def DefaultSelector():
|
||||
""" This function serves as a first call for DefaultSelector to
|
||||
detect if the select module is being monkey-patched incorrectly
|
||||
by eventlet, greenlet, and preserve proper behavior. """
|
||||
global _DEFAULT_SELECTOR
|
||||
if _DEFAULT_SELECTOR is None:
|
||||
if platform.python_implementation() == 'Jython': # Platform-specific: Jython
|
||||
_DEFAULT_SELECTOR = JythonSelectSelector
|
||||
elif _can_allocate('kqueue'):
|
||||
_DEFAULT_SELECTOR = KqueueSelector
|
||||
elif _can_allocate('devpoll'):
|
||||
_DEFAULT_SELECTOR = DevpollSelector
|
||||
elif _can_allocate('epoll'):
|
||||
_DEFAULT_SELECTOR = EpollSelector
|
||||
elif _can_allocate('poll'):
|
||||
_DEFAULT_SELECTOR = PollSelector
|
||||
elif hasattr(select, 'select'):
|
||||
_DEFAULT_SELECTOR = SelectSelector
|
||||
else: # Platform-specific: AppEngine
|
||||
raise RuntimeError('Platform does not have a selector.')
|
||||
return _DEFAULT_SELECTOR()
|
||||
Loading…
Reference in New Issue
Block a user