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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport asyncio import sys from urllib.parse import urlparse, parse_qsl from .log import logger _NOTSET = object() IS_PY38 = sys.version_info >= (3, 8) # NOTE: never put here anything else; # just this basic types _converters = { bytes: lambda val: val, bytearray: lambda val: val, str: lambda val: val.encode(), int: lambda val: b'%d' % val, float: lambda val: b'%r' % val, } def encode_command(*args, buf=None): """Encodes arguments into redis bulk-strings array. Raises TypeError if any of args not of bytearray, bytes, float, int, or str type. """ if buf is None: buf = bytearray() buf.extend(b'*%d\r\n' % len(args)) try: for arg in args: barg = _converters[type(arg)](arg) buf.extend(b'$%d\r\n%s\r\n' % (len(barg), barg)) except KeyError: raise TypeError("Argument {!r} expected to be of bytearray, bytes," " float, int, or str type".format(arg)) return buf def decode(obj, encoding): if isinstance(obj, bytes): return obj.decode(encoding) elif isinstance(obj, list): return [decode(o, encoding) for o in obj] return obj async def wait_ok(fut): res = await fut if res in (b'QUEUED', 'QUEUED'): return res return res in (b'OK', 'OK') async def wait_convert(fut, type_, **kwargs): result = await fut if result in (b'QUEUED', 'QUEUED'): return result return type_(result, **kwargs) async def wait_make_dict(fut): res = await fut if res in (b'QUEUED', 'QUEUED'): return res it = iter(res) return dict(zip(it, it)) class coerced_keys_dict(dict): def __getitem__(self, other): if not isinstance(other, bytes): other = _converters[type(other)](other) return dict.__getitem__(self, other) def __contains__(self, other): if not isinstance(other, bytes): other = _converters[type(other)](other) return dict.__contains__(self, other) class _ScanIter: __slots__ = ('_scan', '_cur', '_ret') def __init__(self, scan): self._scan = scan self._cur = b'0' self._ret = [] def __aiter__(self): return self async def __anext__(self): while not self._ret and self._cur: self._cur, self._ret = await self._scan(self._cur) if not self._cur and not self._ret: raise StopAsyncIteration # noqa else: ret = self._ret.pop(0) return ret def _set_result(fut, result, *info): if fut.done(): logger.debug("Waiter future is already done %r %r", fut, info) assert fut.cancelled(), ( "waiting future is in wrong state", fut, result, info) else: fut.set_result(result) def _set_exception(fut, exception): if fut.done(): logger.debug("Waiter future is already done %r", fut) assert fut.cancelled(), ( "waiting future is in wrong state", fut, exception) else: fut.set_exception(exception) def parse_url(url): """Parse Redis connection URI. Parse according to IANA specs: * https://www.iana.org/assignments/uri-schemes/prov/redis * https://www.iana.org/assignments/uri-schemes/prov/rediss Also more rules applied: * empty scheme is treated as unix socket path no further parsing is done. * 'unix://' scheme is treated as unix socket path and parsed. * Multiple query parameter values and blank values are considered error. * DB number specified as path and as query parameter is considered error. * Password specified in userinfo and as query parameter is considered error. """ r = urlparse(url) assert r.scheme in ('', 'redis', 'rediss', 'unix'), ( "Unsupported URI scheme", r.scheme) if r.scheme == '': return url, {} query = {} for p, v in parse_qsl(r.query, keep_blank_values=True): assert p not in query, ("Multiple parameters are not allowed", p, v) assert v, ("Empty parameters are not allowed", p, v) query[p] = v if r.scheme == 'unix': assert r.path, ("Empty path is not allowed", url) assert not r.netloc, ( "Netlocation is not allowed for unix scheme", r.netloc) return r.path, _parse_uri_options(query, '', r.password) address = (r.hostname or 'localhost', int(r.port or 6379)) path = r.path if path.startswith('/'): path = r.path[1:] options = _parse_uri_options(query, path, r.password) if r.scheme == 'rediss': options['ssl'] = True return address, options def _parse_uri_options(params, path, password): def parse_db_num(val): if not val: return assert val.isdecimal(), ("Invalid decimal integer", val) assert val == '0' or not val.startswith('0'), ( "Expected integer without leading zeroes", val) return int(val) options = {} db1 = parse_db_num(path) db2 = parse_db_num(params.get('db')) assert db1 is None or db2 is None, ( "Single DB value expected, got path and query", db1, db2) if db1 is not None: options['db'] = db1 elif db2 is not None: options['db'] = db2 password2 = params.get('password') assert not password or not password2, ( "Single password value is expected, got in net location and query") if password: options['password'] = password elif password2: options['password'] = password2 if 'encoding' in params: options['encoding'] = params['encoding'] if 'ssl' in params: assert params['ssl'] in ('true', 'false'), ( "Expected 'ssl' param to be 'true' or 'false' only", params['ssl']) options['ssl'] = params['ssl'] == 'true' if 'timeout' in params: options['timeout'] = float(params['timeout']) return options class CloseEvent: def __init__(self, on_close): self._close_init = asyncio.Event() self._close_done = asyncio.Event() self._on_close = on_close async def wait(self): await self._close_init.wait() await self._close_done.wait() def is_set(self): return self._close_done.is_set() or self._close_init.is_set() def set(self): if self._close_init.is_set(): return task = asyncio.ensure_future(self._on_close()) task.add_done_callback(self._cleanup) self._close_init.set() def _cleanup(self, task): self._on_close = None self._close_done.set() get_event_loop = getattr(asyncio, 'get_running_loop', asyncio.get_event_loop)