X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/5762b7f0f8d33eda021da908b6ddced684a2ba05..1259672feb4fcad189d413a341745990a844feda:/client-libraries/python/redis.py?ds=sidebyside diff --git a/client-libraries/python/redis.py b/client-libraries/python/redis.py deleted file mode 100644 index 9618901e..00000000 --- a/client-libraries/python/redis.py +++ /dev/null @@ -1,1051 +0,0 @@ -#!/usr/bin/env python - -""" redis.py - A client for the Redis daemon. - -History: - - - 20090603 fix missing errno import, add sunion and sunionstore commands, - generalize shebang (Jochen Kupperschmidt) - -""" - -__author__ = "Ludovico Magnocavallo " -__copyright__ = "Copyright 2009, Ludovico Magnocavallo" -__license__ = "MIT" -__version__ = "0.5" -__revision__ = "$LastChangedRevision: 175 $"[22:-2] -__date__ = "$LastChangedDate: 2009-03-17 16:15:55 +0100 (Mar, 17 Mar 2009) $"[18:-2] - - -# TODO: Redis._get_multi_response - - -import socket -import decimal -import errno - - -BUFSIZE = 4096 - - -class RedisError(Exception): pass -class ConnectionError(RedisError): pass -class ResponseError(RedisError): pass -class InvalidResponse(RedisError): pass -class InvalidData(RedisError): pass - - -class Redis(object): - """The main Redis client. - """ - - def __init__(self, host=None, port=None, timeout=None, db=None, nodelay=None, charset='utf8', errors='strict'): - self.host = host or 'localhost' - self.port = port or 6379 - if timeout: - socket.setdefaulttimeout(timeout) - self.nodelay = nodelay - self.charset = charset - self.errors = errors - self._sock = None - self._fp = None - self.db = db - - def _encode(self, s): - if isinstance(s, str): - return s - if isinstance(s, unicode): - try: - return s.encode(self.charset, self.errors) - except UnicodeEncodeError, e: - raise InvalidData("Error encoding unicode value '%s': %s" % (value.encode(self.charset, 'replace'), e)) - return str(s) - - def _write(self, s): - """ - >>> r = Redis(db=9) - >>> r.connect() - >>> r._sock.close() - >>> try: - ... r._write('pippo') - ... except ConnectionError, e: - ... print e - Error 9 while writing to socket. Bad file descriptor. - >>> - >>> - """ - try: - self._sock.sendall(s) - except socket.error, e: - if e.args[0] == 32: - # broken pipe - self.disconnect() - raise ConnectionError("Error %s while writing to socket. %s." % tuple(e.args)) - - def _read(self): - try: - return self._fp.readline() - except socket.error, e: - if e.args and e.args[0] == errno.EAGAIN: - return - self.disconnect() - raise ConnectionError("Error %s while reading from socket. %s." % tuple(e.args)) - if not data: - self.disconnect() - raise ConnectionError("Socket connection closed when reading.") - return data - - def ping(self): - """ - >>> r = Redis(db=9) - >>> r.ping() - 'PONG' - >>> - """ - self.connect() - self._write('PING\r\n') - return self.get_response() - - def set(self, name, value, preserve=False, getset=False): - """ - >>> r = Redis(db=9) - >>> r.set('a', 'pippo') - 'OK' - >>> r.set('a', u'pippo \u3235') - 'OK' - >>> r.get('a') - u'pippo \u3235' - >>> r.set('b', 105.2) - 'OK' - >>> r.set('b', 'xxx', preserve=True) - 0 - >>> r.get('b') - Decimal("105.2") - >>> - """ - self.connect() - # the following will raise an error for unicode values that can't be encoded to ascii - # we could probably add an 'encoding' arg to init, but then what do we do with get()? - # convert back to unicode? and what about ints, or pickled values? - if getset: command = 'GETSET' - elif preserve: command = 'SETNX' - else: command = 'SET' - value = self._encode(value) - self._write('%s %s %s\r\n%s\r\n' % ( - command, name, len(value), value - )) - return self.get_response() - - def get(self, name): - """ - >>> r = Redis(db=9) - >>> r.set('a', 'pippo'), r.set('b', 15), r.set('c', ' \\r\\naaa\\nbbb\\r\\ncccc\\nddd\\r\\n '), r.set('d', '\\r\\n') - ('OK', 'OK', 'OK', 'OK') - >>> r.get('a') - u'pippo' - >>> r.get('b') - 15 - >>> r.get('d') - u'\\r\\n' - >>> r.get('b') - 15 - >>> r.get('c') - u' \\r\\naaa\\nbbb\\r\\ncccc\\nddd\\r\\n ' - >>> r.get('c') - u' \\r\\naaa\\nbbb\\r\\ncccc\\nddd\\r\\n ' - >>> r.get('ajhsd') - >>> - """ - self.connect() - self._write('GET %s\r\n' % name) - return self.get_response() - - def getset(self, name, value): - """ - >>> r = Redis(db=9) - >>> r.set('a', 'pippo') - 'OK' - >>> r.getset('a', 2) - u'pippo' - >>> - """ - return self.set(name, value, getset=True) - - def mget(self, *args): - """ - >>> r = Redis(db=9) - >>> r.set('a', 'pippo'), r.set('b', 15), r.set('c', '\\r\\naaa\\nbbb\\r\\ncccc\\nddd\\r\\n'), r.set('d', '\\r\\n') - ('OK', 'OK', 'OK', 'OK') - >>> r.mget('a', 'b', 'c', 'd') - [u'pippo', 15, u'\\r\\naaa\\nbbb\\r\\ncccc\\nddd\\r\\n', u'\\r\\n'] - >>> - """ - self.connect() - self._write('MGET %s\r\n' % ' '.join(args)) - return self.get_response() - - def incr(self, name, amount=1): - """ - >>> r = Redis(db=9) - >>> r.delete('a') - 1 - >>> r.incr('a') - 1 - >>> r.incr('a') - 2 - >>> r.incr('a', 2) - 4 - >>> - """ - self.connect() - if amount == 1: - self._write('INCR %s\r\n' % name) - else: - self._write('INCRBY %s %s\r\n' % (name, amount)) - return self.get_response() - - def decr(self, name, amount=1): - """ - >>> r = Redis(db=9) - >>> if r.get('a'): - ... r.delete('a') - ... else: - ... print 1 - 1 - >>> r.decr('a') - -1 - >>> r.decr('a') - -2 - >>> r.decr('a', 5) - -7 - >>> - """ - self.connect() - if amount == 1: - self._write('DECR %s\r\n' % name) - else: - self._write('DECRBY %s %s\r\n' % (name, amount)) - return self.get_response() - - def exists(self, name): - """ - >>> r = Redis(db=9) - >>> r.exists('dsjhfksjdhfkdsjfh') - 0 - >>> r.set('a', 'a') - 'OK' - >>> r.exists('a') - 1 - >>> - """ - self.connect() - self._write('EXISTS %s\r\n' % name) - return self.get_response() - - def delete(self, name): - """ - >>> r = Redis(db=9) - >>> r.delete('dsjhfksjdhfkdsjfh') - 0 - >>> r.set('a', 'a') - 'OK' - >>> r.delete('a') - 1 - >>> r.exists('a') - 0 - >>> r.delete('a') - 0 - >>> - """ - self.connect() - self._write('DEL %s\r\n' % name) - return self.get_response() - - def get_type(self, name): - """ - >>> r = Redis(db=9) - >>> r.set('a', 3) - 'OK' - >>> r.get_type('a') - 'string' - >>> r.get_type('zzz') - >>> - """ - self.connect() - self._write('TYPE %s\r\n' % name) - res = self.get_response() - return None if res == 'none' else res - - def keys(self, pattern): - """ - >>> r = Redis(db=9) - >>> r.flush() - 'OK' - >>> r.set('a', 'a') - 'OK' - >>> r.keys('a*') - [u'a'] - >>> r.set('a2', 'a') - 'OK' - >>> r.keys('a*') - [u'a', u'a2'] - >>> r.delete('a2') - 1 - >>> r.keys('sjdfhskjh*') - [] - >>> - """ - self.connect() - self._write('KEYS %s\r\n' % pattern) - return self.get_response().split() - - def randomkey(self): - """ - >>> r = Redis(db=9) - >>> r.set('a', 'a') - 'OK' - >>> isinstance(r.randomkey(), str) - True - >>> - """ - #raise NotImplementedError("Implemented but buggy, do not use.") - self.connect() - self._write('RANDOMKEY\r\n') - return self.get_response() - - def rename(self, src, dst, preserve=False): - """ - >>> r = Redis(db=9) - >>> try: - ... r.rename('a', 'a') - ... except ResponseError, e: - ... print e - source and destination objects are the same - >>> r.rename('a', 'b') - 'OK' - >>> try: - ... r.rename('a', 'b') - ... except ResponseError, e: - ... print e - no such key - >>> r.set('a', 1) - 'OK' - >>> r.rename('b', 'a', preserve=True) - 0 - >>> - """ - self.connect() - if preserve: - self._write('RENAMENX %s %s\r\n' % (src, dst)) - return self.get_response() - else: - self._write('RENAME %s %s\r\n' % (src, dst)) - return self.get_response() #.strip() - - def dbsize(self): - """ - >>> r = Redis(db=9) - >>> type(r.dbsize()) - - >>> - """ - self.connect() - self._write('DBSIZE\r\n') - return self.get_response() - - def ttl(self, name): - """ - >>> r = Redis(db=9) - >>> r.ttl('a') - -1 - >>> r.expire('a', 10) - 1 - >>> r.ttl('a') - 10 - >>> r.expire('a', 0) - 0 - >>> - """ - self.connect() - self._write('TTL %s\r\n' % name) - return self.get_response() - - def expire(self, name, time): - """ - >>> r = Redis(db=9) - >>> r.set('a', 1) - 'OK' - >>> r.expire('a', 1) - 1 - >>> r.expire('zzzzz', 1) - 0 - >>> - """ - self.connect() - self._write('EXPIRE %s %s\r\n' % (name, time)) - return self.get_response() - - def push(self, name, value, tail=False): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> r.push('l', 'a') - 'OK' - >>> r.set('a', 'a') - 'OK' - >>> try: - ... r.push('a', 'a') - ... except ResponseError, e: - ... print e - Operation against a key holding the wrong kind of value - >>> - """ - self.connect() - value = self._encode(value) - self._write('%s %s %s\r\n%s\r\n' % ( - 'LPUSH' if tail else 'RPUSH', name, len(value), value - )) - return self.get_response() - - def llen(self, name): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> r.push('l', 'a') - 'OK' - >>> r.llen('l') - 1 - >>> r.push('l', 'a') - 'OK' - >>> r.llen('l') - 2 - >>> - """ - self.connect() - self._write('LLEN %s\r\n' % name) - return self.get_response() - - def lrange(self, name, start, end): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> r.lrange('l', 0, 1) - [] - >>> r.push('l', 'aaa') - 'OK' - >>> r.lrange('l', 0, 1) - [u'aaa'] - >>> r.push('l', 'bbb') - 'OK' - >>> r.lrange('l', 0, 0) - [u'aaa'] - >>> r.lrange('l', 0, 1) - [u'aaa', u'bbb'] - >>> r.lrange('l', -1, 0) - [] - >>> r.lrange('l', -1, -1) - [u'bbb'] - >>> - """ - self.connect() - self._write('LRANGE %s %s %s\r\n' % (name, start, end)) - return self.get_response() - - def ltrim(self, name, start, end): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> try: - ... r.ltrim('l', 0, 1) - ... except ResponseError, e: - ... print e - no such key - >>> r.push('l', 'aaa') - 'OK' - >>> r.push('l', 'bbb') - 'OK' - >>> r.push('l', 'ccc') - 'OK' - >>> r.ltrim('l', 0, 1) - 'OK' - >>> r.llen('l') - 2 - >>> r.ltrim('l', 99, 95) - 'OK' - >>> r.llen('l') - 0 - >>> - """ - self.connect() - self._write('LTRIM %s %s %s\r\n' % (name, start, end)) - return self.get_response() - - def lindex(self, name, index): - """ - >>> r = Redis(db=9) - >>> res = r.delete('l') - >>> r.lindex('l', 0) - >>> r.push('l', 'aaa') - 'OK' - >>> r.lindex('l', 0) - u'aaa' - >>> r.lindex('l', 2) - >>> r.push('l', 'ccc') - 'OK' - >>> r.lindex('l', 1) - u'ccc' - >>> r.lindex('l', -1) - u'ccc' - >>> - """ - self.connect() - self._write('LINDEX %s %s\r\n' % (name, index)) - return self.get_response() - - def pop(self, name, tail=False): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> r.pop('l') - >>> r.push('l', 'aaa') - 'OK' - >>> r.push('l', 'bbb') - 'OK' - >>> r.pop('l') - u'aaa' - >>> r.pop('l') - u'bbb' - >>> r.pop('l') - >>> r.push('l', 'aaa') - 'OK' - >>> r.push('l', 'bbb') - 'OK' - >>> r.pop('l', tail=True) - u'bbb' - >>> r.pop('l') - u'aaa' - >>> r.pop('l') - >>> - """ - self.connect() - self._write('%s %s\r\n' % ('RPOP' if tail else 'LPOP', name)) - return self.get_response() - - def lset(self, name, index, value): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> try: - ... r.lset('l', 0, 'a') - ... except ResponseError, e: - ... print e - no such key - >>> r.push('l', 'aaa') - 'OK' - >>> try: - ... r.lset('l', 1, 'a') - ... except ResponseError, e: - ... print e - index out of range - >>> r.lset('l', 0, 'bbb') - 'OK' - >>> r.lrange('l', 0, 1) - [u'bbb'] - >>> - """ - self.connect() - value = self._encode(value) - self._write('LSET %s %s %s\r\n%s\r\n' % ( - name, index, len(value), value - )) - return self.get_response() - - def lrem(self, name, value, num=0): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> r.push('l', 'aaa') - 'OK' - >>> r.push('l', 'bbb') - 'OK' - >>> r.push('l', 'aaa') - 'OK' - >>> r.lrem('l', 'aaa') - 2 - >>> r.lrange('l', 0, 10) - [u'bbb'] - >>> r.push('l', 'aaa') - 'OK' - >>> r.push('l', 'aaa') - 'OK' - >>> r.lrem('l', 'aaa', 1) - 1 - >>> r.lrem('l', 'aaa', 1) - 1 - >>> r.lrem('l', 'aaa', 1) - 0 - >>> - """ - self.connect() - value = self._encode(value) - self._write('LREM %s %s %s\r\n%s\r\n' % ( - name, num, len(value), value - )) - return self.get_response() - - def sort(self, name, by=None, get=None, start=None, num=None, desc=False, alpha=False): - """ - >>> r = Redis(db=9) - >>> r.delete('l') - 1 - >>> r.push('l', 'ccc') - 'OK' - >>> r.push('l', 'aaa') - 'OK' - >>> r.push('l', 'ddd') - 'OK' - >>> r.push('l', 'bbb') - 'OK' - >>> r.sort('l', alpha=True) - [u'aaa', u'bbb', u'ccc', u'ddd'] - >>> r.delete('l') - 1 - >>> for i in range(1, 5): - ... res = r.push('l', 1.0 / i) - >>> r.sort('l') - [Decimal("0.25"), Decimal("0.333333333333"), Decimal("0.5"), Decimal("1.0")] - >>> r.sort('l', desc=True) - [Decimal("1.0"), Decimal("0.5"), Decimal("0.333333333333"), Decimal("0.25")] - >>> r.sort('l', desc=True, start=2, num=1) - [Decimal("0.333333333333")] - >>> r.set('weight_0.5', 10) - 'OK' - >>> r.sort('l', desc=True, by='weight_*') - [Decimal("0.5"), Decimal("1.0"), Decimal("0.333333333333"), Decimal("0.25")] - >>> for i in r.sort('l', desc=True): - ... res = r.set('test_%s' % i, 100 - float(i)) - >>> r.sort('l', desc=True, get='test_*') - [Decimal("99.0"), Decimal("99.5"), Decimal("99.6666666667"), Decimal("99.75")] - >>> r.sort('l', desc=True, by='weight_*', get='test_*') - [Decimal("99.5"), Decimal("99.0"), Decimal("99.6666666667"), Decimal("99.75")] - >>> r.sort('l', desc=True, by='weight_*', get='missing_*') - [None, None, None, None] - >>> - """ - stmt = ['SORT', name] - if by: - stmt.append("BY %s" % by) - if start and num: - stmt.append("LIMIT %s %s" % (start, num)) - if get is None: - pass - elif isinstance(get, basestring): - stmt.append("GET %s" % get) - elif isinstance(get, list) or isinstance(get, tuple): - for g in get: - stmt.append("GET %s" % g) - else: - raise RedisError("Invalid parameter 'get' for Redis sort") - if desc: - stmt.append("DESC") - if alpha: - stmt.append("ALPHA") - self.connect() - self._write(' '.join(stmt + ["\r\n"])) - return self.get_response() - - def sadd(self, name, value): - """ - >>> r = Redis(db=9) - >>> res = r.delete('s') - >>> r.sadd('s', 'a') - 1 - >>> r.sadd('s', 'b') - 1 - >>> - """ - self.connect() - value = self._encode(value) - self._write('SADD %s %s\r\n%s\r\n' % ( - name, len(value), value - )) - return self.get_response() - - def srem(self, name, value): - """ - >>> r = Redis(db=9) - >>> r.delete('s') - 1 - >>> r.srem('s', 'aaa') - 0 - >>> r.sadd('s', 'b') - 1 - >>> r.srem('s', 'b') - 1 - >>> r.sismember('s', 'b') - 0 - >>> - """ - self.connect() - value = self._encode(value) - self._write('SREM %s %s\r\n%s\r\n' % ( - name, len(value), value - )) - return self.get_response() - - def sismember(self, name, value): - """ - >>> r = Redis(db=9) - >>> r.delete('s') - 1 - >>> r.sismember('s', 'b') - 0 - >>> r.sadd('s', 'a') - 1 - >>> r.sismember('s', 'b') - 0 - >>> r.sismember('s', 'a') - 1 - >>> - """ - self.connect() - value = self._encode(value) - self._write('SISMEMBER %s %s\r\n%s\r\n' % ( - name, len(value), value - )) - return self.get_response() - - def sinter(self, *args): - """ - >>> r = Redis(db=9) - >>> res = r.delete('s1') - >>> res = r.delete('s2') - >>> res = r.delete('s3') - >>> r.sadd('s1', 'a') - 1 - >>> r.sadd('s2', 'a') - 1 - >>> r.sadd('s3', 'b') - 1 - >>> try: - ... r.sinter() - ... except ResponseError, e: - ... print e - wrong number of arguments - >>> try: - ... r.sinter('l') - ... except ResponseError, e: - ... print e - Operation against a key holding the wrong kind of value - >>> r.sinter('s1', 's2', 's3') - set([]) - >>> r.sinter('s1', 's2') - set([u'a']) - >>> - """ - self.connect() - self._write('SINTER %s\r\n' % ' '.join(args)) - return set(self.get_response()) - - def sinterstore(self, dest, *args): - """ - >>> r = Redis(db=9) - >>> res = r.delete('s1') - >>> res = r.delete('s2') - >>> res = r.delete('s3') - >>> r.sadd('s1', 'a') - 1 - >>> r.sadd('s2', 'a') - 1 - >>> r.sadd('s3', 'b') - 1 - >>> r.sinterstore('s_s', 's1', 's2', 's3') - 0 - >>> r.sinterstore('s_s', 's1', 's2') - 1 - >>> r.smembers('s_s') - set([u'a']) - >>> - """ - self.connect() - self._write('SINTERSTORE %s %s\r\n' % (dest, ' '.join(args))) - return self.get_response() - - def smembers(self, name): - """ - >>> r = Redis(db=9) - >>> r.delete('s') - 1 - >>> r.sadd('s', 'a') - 1 - >>> r.sadd('s', 'b') - 1 - >>> try: - ... r.smembers('l') - ... except ResponseError, e: - ... print e - Operation against a key holding the wrong kind of value - >>> r.smembers('s') - set([u'a', u'b']) - >>> - """ - self.connect() - self._write('SMEMBERS %s\r\n' % name) - return set(self.get_response()) - - def sunion(self, *args): - """ - >>> r = Redis(db=9) - >>> res = r.delete('s1') - >>> res = r.delete('s2') - >>> res = r.delete('s3') - >>> r.sadd('s1', 'a') - 1 - >>> r.sadd('s2', 'a') - 1 - >>> r.sadd('s3', 'b') - 1 - >>> r.sunion('s1', 's2', 's3') - set([u'a', u'b']) - >>> r.sadd('s2', 'c') - 1 - >>> r.sunion('s1', 's2', 's3') - set([u'a', u'c', u'b']) - >>> - """ - self.connect() - self._write('SUNION %s\r\n' % ' '.join(args)) - return set(self.get_response()) - - def sunionstore(self, dest, *args): - """ - >>> r = Redis(db=9) - >>> res = r.delete('s1') - >>> res = r.delete('s2') - >>> res = r.delete('s3') - >>> r.sadd('s1', 'a') - 1 - >>> r.sadd('s2', 'a') - 1 - >>> r.sadd('s3', 'b') - 1 - >>> r.sunionstore('s4', 's1', 's2', 's3') - 2 - >>> r.smembers('s4') - set([u'a', u'b']) - >>> - """ - self.connect() - self._write('SUNIONSTORE %s %s\r\n' % (dest, ' '.join(args))) - return self.get_response() - - def select(self, db): - """ - >>> r = Redis(db=9) - >>> r.delete('a') - 1 - >>> r.select(10) - 'OK' - >>> r.set('a', 1) - 'OK' - >>> r.select(9) - 'OK' - >>> r.get('a') - >>> - """ - self.connect() - self._write('SELECT %s\r\n' % db) - return self.get_response() - - def move(self, name, db): - """ - >>> r = Redis(db=9) - >>> r.set('a', 'a') - 'OK' - >>> r.select(10) - 'OK' - >>> if r.get('a'): - ... r.delete('a') - ... else: - ... print 1 - 1 - >>> r.select(9) - 'OK' - >>> r.move('a', 10) - 1 - >>> r.get('a') - >>> r.select(10) - 'OK' - >>> r.get('a') - u'a' - >>> r.select(9) - 'OK' - >>> - """ - self.connect() - self._write('MOVE %s %s\r\n' % (name, db)) - return self.get_response() - - def save(self, background=False): - """ - >>> r = Redis(db=9) - >>> r.save() - 'OK' - >>> try: - ... resp = r.save(background=True) - ... except ResponseError, e: - ... assert str(e) == 'background save already in progress', str(e) - ... else: - ... assert resp == 'OK' - >>> - """ - self.connect() - if background: - self._write('BGSAVE\r\n') - else: - self._write('SAVE\r\n') - return self.get_response() - - def lastsave(self): - """ - >>> import time - >>> r = Redis(db=9) - >>> t = int(time.time()) - >>> r.save() - 'OK' - >>> r.lastsave() >= t - True - >>> - """ - self.connect() - self._write('LASTSAVE\r\n') - return self.get_response() - - def flush(self, all_dbs=False): - """ - >>> r = Redis(db=9) - >>> r.flush() - 'OK' - >>> # r.flush(all_dbs=True) - >>> - """ - self.connect() - self._write('%s\r\n' % ('FLUSHALL' if all_dbs else 'FLUSHDB')) - return self.get_response() - - def info(self): - """ - >>> r = Redis(db=9) - >>> info = r.info() - >>> info and isinstance(info, dict) - True - >>> isinstance(info.get('connected_clients'), int) - True - >>> - """ - self.connect() - self._write('INFO\r\n') - info = dict() - for l in self.get_response().split('\r\n'): - if not l: - continue - k, v = l.split(':', 1) - info[k] = int(v) if v.isdigit() else v - return info - - def auth(self, passwd): - self.connect() - self._write('AUTH %s\r\n' % passwd) - return self.get_response() - - def get_response(self): - data = self._read().strip() - if not data: - self.disconnect() - raise ConnectionError("Socket closed on remote end") - c = data[0] - if c == '-': - raise ResponseError(data[5:] if data[:5] == '-ERR ' else data[1:]) - if c == '+': - return data[1:] - if c == '*': - try: - num = int(data[1:]) - except (TypeError, ValueError): - raise InvalidResponse("Cannot convert multi-response header '%s' to integer" % data) - result = list() - for i in range(num): - result.append(self._get_value()) - return result - return self._get_value(data) - - def _get_value(self, data=None): - data = data or self._read().strip() - if data == '$-1': - return None - try: - c, i = data[0], (int(data[1:]) if data.find('.') == -1 else float(data[1:])) - except ValueError: - raise InvalidResponse("Cannot convert data '%s' to integer" % data) - if c == ':': - return i - if c != '$': - raise InvalidResponse("Unkown response prefix for '%s'" % data) - buf = [] - while True: - data = self._read() - i -= len(data) - buf.append(data) - if i < 0: - break - data = ''.join(buf)[:-2] - try: - return int(data) if data.find('.') == -1 else decimal.Decimal(data) - except (ValueError, decimal.InvalidOperation): - return data.decode(self.charset) - - def disconnect(self): - if isinstance(self._sock, socket.socket): - try: - self._sock.close() - except socket.error: - pass - self._sock = None - self._fp = None - - def connect(self): - """ - >>> r = Redis(db=9) - >>> r.connect() - >>> isinstance(r._sock, socket.socket) - True - >>> r.disconnect() - >>> - """ - if isinstance(self._sock, socket.socket): - return - try: - sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) - sock.connect((self.host, self.port)) - except socket.error, e: - raise ConnectionError("Error %s connecting to %s:%s. %s." % (e.args[0], self.host, self.port, e.args[1])) - else: - self._sock = sock - self._fp = self._sock.makefile('r') - if self.db: - self.select(self.db) - if self.nodelay is not None: - self._sock.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, self.nodelay) - - -if __name__ == '__main__': - import doctest - doctest.testmod() -