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@@ -1,472 +1,476 b'' | |||
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1 | 1 | """some generic utilities for dealing with classes, urls, and serialization |
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2 | 2 | |
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3 | 3 | Authors: |
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4 | 4 | |
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5 | 5 | * Min RK |
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6 | 6 | """ |
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7 | 7 | #----------------------------------------------------------------------------- |
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8 | 8 | # Copyright (C) 2010-2011 The IPython Development Team |
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9 | 9 | # |
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10 | 10 | # Distributed under the terms of the BSD License. The full license is in |
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11 | 11 | # the file COPYING, distributed as part of this software. |
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12 | 12 | #----------------------------------------------------------------------------- |
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13 | 13 | |
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14 | 14 | #----------------------------------------------------------------------------- |
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15 | 15 | # Imports |
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16 | 16 | #----------------------------------------------------------------------------- |
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17 | 17 | |
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18 | 18 | # Standard library imports. |
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19 | 19 | import logging |
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20 | 20 | import os |
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21 | 21 | import re |
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22 | 22 | import stat |
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23 | 23 | import socket |
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24 | 24 | import sys |
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25 | 25 | from signal import signal, SIGINT, SIGABRT, SIGTERM |
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26 | 26 | try: |
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27 | 27 | from signal import SIGKILL |
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28 | 28 | except ImportError: |
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29 | 29 | SIGKILL=None |
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30 | 30 | |
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31 | 31 | try: |
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32 | 32 | import cPickle |
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33 | 33 | pickle = cPickle |
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34 | 34 | except: |
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35 | 35 | cPickle = None |
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36 | 36 | import pickle |
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37 | 37 | |
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38 | 38 | # System library imports |
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39 | 39 | import zmq |
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40 | 40 | from zmq.log import handlers |
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41 | 41 | |
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42 | 42 | # IPython imports |
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43 | 43 | from IPython.config.application import Application |
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44 | 44 | from IPython.utils.pickleutil import can, uncan, canSequence, uncanSequence |
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45 | 45 | from IPython.utils.newserialized import serialize, unserialize |
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46 | 46 | from IPython.zmq.log import EnginePUBHandler |
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47 | 47 | |
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48 | 48 | #----------------------------------------------------------------------------- |
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49 | 49 | # Classes |
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50 | 50 | #----------------------------------------------------------------------------- |
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51 | 51 | |
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52 | 52 | class Namespace(dict): |
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53 | 53 | """Subclass of dict for attribute access to keys.""" |
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54 | 54 | |
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55 | 55 | def __getattr__(self, key): |
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56 | 56 | """getattr aliased to getitem""" |
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57 | 57 | if key in self.iterkeys(): |
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58 | 58 | return self[key] |
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59 | 59 | else: |
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60 | 60 | raise NameError(key) |
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61 | 61 | |
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62 | 62 | def __setattr__(self, key, value): |
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63 | 63 | """setattr aliased to setitem, with strict""" |
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64 | 64 | if hasattr(dict, key): |
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65 | 65 | raise KeyError("Cannot override dict keys %r"%key) |
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66 | 66 | self[key] = value |
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67 | 67 | |
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68 | 68 | |
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69 | 69 | class ReverseDict(dict): |
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70 | 70 | """simple double-keyed subset of dict methods.""" |
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71 | 71 | |
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72 | 72 | def __init__(self, *args, **kwargs): |
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73 | 73 | dict.__init__(self, *args, **kwargs) |
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74 | 74 | self._reverse = dict() |
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75 | 75 | for key, value in self.iteritems(): |
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76 | 76 | self._reverse[value] = key |
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77 | 77 | |
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78 | 78 | def __getitem__(self, key): |
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79 | 79 | try: |
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80 | 80 | return dict.__getitem__(self, key) |
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81 | 81 | except KeyError: |
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82 | 82 | return self._reverse[key] |
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83 | 83 | |
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84 | 84 | def __setitem__(self, key, value): |
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85 | 85 | if key in self._reverse: |
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86 | 86 | raise KeyError("Can't have key %r on both sides!"%key) |
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87 | 87 | dict.__setitem__(self, key, value) |
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88 | 88 | self._reverse[value] = key |
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89 | 89 | |
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90 | 90 | def pop(self, key): |
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91 | 91 | value = dict.pop(self, key) |
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92 | 92 | self._reverse.pop(value) |
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93 | 93 | return value |
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94 | 94 | |
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95 | 95 | def get(self, key, default=None): |
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96 | 96 | try: |
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97 | 97 | return self[key] |
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98 | 98 | except KeyError: |
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99 | 99 | return default |
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100 | 100 | |
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101 | 101 | #----------------------------------------------------------------------------- |
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102 | 102 | # Functions |
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103 | 103 | #----------------------------------------------------------------------------- |
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104 | 104 | |
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105 | 105 | def asbytes(s): |
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106 | 106 | """ensure that an object is ascii bytes""" |
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107 | 107 | if isinstance(s, unicode): |
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108 | 108 | s = s.encode('ascii') |
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109 | 109 | return s |
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110 | 110 | |
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111 | 111 | def is_url(url): |
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112 | 112 | """boolean check for whether a string is a zmq url""" |
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113 | 113 | if '://' not in url: |
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114 | 114 | return False |
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115 | 115 | proto, addr = url.split('://', 1) |
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116 | 116 | if proto.lower() not in ['tcp','pgm','epgm','ipc','inproc']: |
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117 | 117 | return False |
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118 | 118 | return True |
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119 | 119 | |
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120 | 120 | def validate_url(url): |
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121 | 121 | """validate a url for zeromq""" |
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122 | 122 | if not isinstance(url, basestring): |
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123 | 123 | raise TypeError("url must be a string, not %r"%type(url)) |
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124 | 124 | url = url.lower() |
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125 | 125 | |
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126 | 126 | proto_addr = url.split('://') |
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127 | 127 | assert len(proto_addr) == 2, 'Invalid url: %r'%url |
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128 | 128 | proto, addr = proto_addr |
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129 | 129 | assert proto in ['tcp','pgm','epgm','ipc','inproc'], "Invalid protocol: %r"%proto |
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130 | 130 | |
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131 | 131 | # domain pattern adapted from http://www.regexlib.com/REDetails.aspx?regexp_id=391 |
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132 | 132 | # author: Remi Sabourin |
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133 | 133 | pat = re.compile(r'^([\w\d]([\w\d\-]{0,61}[\w\d])?\.)*[\w\d]([\w\d\-]{0,61}[\w\d])?$') |
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134 | 134 | |
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135 | 135 | if proto == 'tcp': |
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136 | 136 | lis = addr.split(':') |
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137 | 137 | assert len(lis) == 2, 'Invalid url: %r'%url |
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138 | 138 | addr,s_port = lis |
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139 | 139 | try: |
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140 | 140 | port = int(s_port) |
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141 | 141 | except ValueError: |
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142 | 142 | raise AssertionError("Invalid port %r in url: %r"%(port, url)) |
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143 | 143 | |
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144 | 144 | assert addr == '*' or pat.match(addr) is not None, 'Invalid url: %r'%url |
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145 | 145 | |
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146 | 146 | else: |
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147 | 147 | # only validate tcp urls currently |
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148 | 148 | pass |
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149 | 149 | |
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150 | 150 | return True |
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151 | 151 | |
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152 | 152 | |
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153 | 153 | def validate_url_container(container): |
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154 | 154 | """validate a potentially nested collection of urls.""" |
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155 | 155 | if isinstance(container, basestring): |
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156 | 156 | url = container |
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157 | 157 | return validate_url(url) |
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158 | 158 | elif isinstance(container, dict): |
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159 | 159 | container = container.itervalues() |
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160 | 160 | |
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161 | 161 | for element in container: |
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162 | 162 | validate_url_container(element) |
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163 | 163 | |
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164 | 164 | |
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165 | 165 | def split_url(url): |
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166 | 166 | """split a zmq url (tcp://ip:port) into ('tcp','ip','port').""" |
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167 | 167 | proto_addr = url.split('://') |
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168 | 168 | assert len(proto_addr) == 2, 'Invalid url: %r'%url |
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169 | 169 | proto, addr = proto_addr |
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170 | 170 | lis = addr.split(':') |
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171 | 171 | assert len(lis) == 2, 'Invalid url: %r'%url |
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172 | 172 | addr,s_port = lis |
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173 | 173 | return proto,addr,s_port |
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174 | 174 | |
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175 | 175 | def disambiguate_ip_address(ip, location=None): |
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176 | 176 | """turn multi-ip interfaces '0.0.0.0' and '*' into connectable |
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177 | 177 | ones, based on the location (default interpretation of location is localhost).""" |
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178 | 178 | if ip in ('0.0.0.0', '*'): |
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179 | 179 | try: |
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180 | 180 | external_ips = socket.gethostbyname_ex(socket.gethostname())[2] |
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181 | 181 | except (socket.gaierror, IndexError): |
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182 | 182 | # couldn't identify this machine, assume localhost |
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183 | 183 | external_ips = [] |
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184 | 184 | if location is None or location in external_ips or not external_ips: |
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185 | 185 | # If location is unspecified or cannot be determined, assume local |
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186 | 186 | ip='127.0.0.1' |
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187 | 187 | elif location: |
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188 | 188 | return location |
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189 | 189 | return ip |
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190 | 190 | |
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191 | 191 | def disambiguate_url(url, location=None): |
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192 | 192 | """turn multi-ip interfaces '0.0.0.0' and '*' into connectable |
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193 | 193 | ones, based on the location (default interpretation is localhost). |
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194 | 194 | |
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195 | 195 | This is for zeromq urls, such as tcp://*:10101.""" |
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196 | 196 | try: |
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197 | 197 | proto,ip,port = split_url(url) |
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198 | 198 | except AssertionError: |
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199 | 199 | # probably not tcp url; could be ipc, etc. |
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200 | 200 | return url |
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201 | 201 | |
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202 | 202 | ip = disambiguate_ip_address(ip,location) |
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203 | 203 | |
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204 | 204 | return "%s://%s:%s"%(proto,ip,port) |
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205 | 205 | |
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206 | 206 | def serialize_object(obj, threshold=64e-6): |
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207 | 207 | """Serialize an object into a list of sendable buffers. |
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208 | 208 | |
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209 | 209 | Parameters |
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210 | 210 | ---------- |
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211 | 211 | |
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212 | 212 | obj : object |
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213 | 213 | The object to be serialized |
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214 | 214 | threshold : float |
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215 | 215 | The threshold for not double-pickling the content. |
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216 | 216 | |
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217 | 217 | |
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218 | 218 | Returns |
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219 | 219 | ------- |
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220 | 220 | ('pmd', [bufs]) : |
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221 | 221 | where pmd is the pickled metadata wrapper, |
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222 | 222 | bufs is a list of data buffers |
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223 | 223 | """ |
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224 | 224 | databuffers = [] |
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225 | 225 | if isinstance(obj, (list, tuple)): |
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226 | 226 | clist = canSequence(obj) |
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227 | 227 | slist = map(serialize, clist) |
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228 | 228 | for s in slist: |
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229 | 229 | if s.typeDescriptor in ('buffer', 'ndarray') or s.getDataSize() > threshold: |
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230 | 230 | databuffers.append(s.getData()) |
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231 | 231 | s.data = None |
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232 | 232 | return pickle.dumps(slist,-1), databuffers |
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233 | 233 | elif isinstance(obj, dict): |
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234 | 234 | sobj = {} |
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235 | 235 | for k in sorted(obj.iterkeys()): |
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236 | 236 | s = serialize(can(obj[k])) |
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237 | 237 | if s.typeDescriptor in ('buffer', 'ndarray') or s.getDataSize() > threshold: |
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238 | 238 | databuffers.append(s.getData()) |
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239 | 239 | s.data = None |
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240 | 240 | sobj[k] = s |
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241 | 241 | return pickle.dumps(sobj,-1),databuffers |
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242 | 242 | else: |
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243 | 243 | s = serialize(can(obj)) |
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244 | 244 | if s.typeDescriptor in ('buffer', 'ndarray') or s.getDataSize() > threshold: |
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245 | 245 | databuffers.append(s.getData()) |
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246 | 246 | s.data = None |
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247 | 247 | return pickle.dumps(s,-1),databuffers |
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248 | 248 | |
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249 | 249 | |
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250 | 250 | def unserialize_object(bufs): |
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251 | 251 | """reconstruct an object serialized by serialize_object from data buffers.""" |
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252 | 252 | bufs = list(bufs) |
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253 | 253 | sobj = pickle.loads(bufs.pop(0)) |
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254 | 254 | if isinstance(sobj, (list, tuple)): |
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255 | 255 | for s in sobj: |
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256 | 256 | if s.data is None: |
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257 | 257 | s.data = bufs.pop(0) |
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258 | 258 | return uncanSequence(map(unserialize, sobj)), bufs |
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259 | 259 | elif isinstance(sobj, dict): |
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260 | 260 | newobj = {} |
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261 | 261 | for k in sorted(sobj.iterkeys()): |
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262 | 262 | s = sobj[k] |
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263 | 263 | if s.data is None: |
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264 | 264 | s.data = bufs.pop(0) |
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265 | 265 | newobj[k] = uncan(unserialize(s)) |
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266 | 266 | return newobj, bufs |
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267 | 267 | else: |
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268 | 268 | if sobj.data is None: |
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269 | 269 | sobj.data = bufs.pop(0) |
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270 | 270 | return uncan(unserialize(sobj)), bufs |
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271 | 271 | |
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272 | 272 | def pack_apply_message(f, args, kwargs, threshold=64e-6): |
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273 | 273 | """pack up a function, args, and kwargs to be sent over the wire |
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274 | 274 | as a series of buffers. Any object whose data is larger than `threshold` |
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275 | 275 | will not have their data copied (currently only numpy arrays support zero-copy)""" |
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276 | 276 | msg = [pickle.dumps(can(f),-1)] |
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277 | 277 | databuffers = [] # for large objects |
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278 | 278 | sargs, bufs = serialize_object(args,threshold) |
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279 | 279 | msg.append(sargs) |
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280 | 280 | databuffers.extend(bufs) |
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281 | 281 | skwargs, bufs = serialize_object(kwargs,threshold) |
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282 | 282 | msg.append(skwargs) |
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283 | 283 | databuffers.extend(bufs) |
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284 | 284 | msg.extend(databuffers) |
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285 | 285 | return msg |
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286 | 286 | |
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287 | 287 | def unpack_apply_message(bufs, g=None, copy=True): |
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288 | 288 | """unpack f,args,kwargs from buffers packed by pack_apply_message() |
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289 | 289 | Returns: original f,args,kwargs""" |
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290 | 290 | bufs = list(bufs) # allow us to pop |
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291 | 291 | assert len(bufs) >= 3, "not enough buffers!" |
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292 | 292 | if not copy: |
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293 | 293 | for i in range(3): |
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294 | 294 | bufs[i] = bufs[i].bytes |
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295 | 295 | cf = pickle.loads(bufs.pop(0)) |
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296 | 296 | sargs = list(pickle.loads(bufs.pop(0))) |
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297 | 297 | skwargs = dict(pickle.loads(bufs.pop(0))) |
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298 | 298 | # print sargs, skwargs |
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299 | 299 | f = uncan(cf, g) |
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300 | 300 | for sa in sargs: |
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301 | 301 | if sa.data is None: |
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302 | 302 | m = bufs.pop(0) |
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303 | 303 | if sa.getTypeDescriptor() in ('buffer', 'ndarray'): |
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304 | 304 | # always use a buffer, until memoryviews get sorted out |
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305 | 305 | sa.data = buffer(m) |
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306 | 306 | # disable memoryview support |
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307 | 307 | # if copy: |
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308 | 308 | # sa.data = buffer(m) |
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309 | 309 | # else: |
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310 | 310 | # sa.data = m.buffer |
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311 | 311 | else: |
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312 | 312 | if copy: |
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313 | 313 | sa.data = m |
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314 | 314 | else: |
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315 | 315 | sa.data = m.bytes |
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316 | 316 | |
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317 | 317 | args = uncanSequence(map(unserialize, sargs), g) |
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318 | 318 | kwargs = {} |
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319 | 319 | for k in sorted(skwargs.iterkeys()): |
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320 | 320 | sa = skwargs[k] |
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321 | 321 | if sa.data is None: |
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322 | 322 | m = bufs.pop(0) |
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323 | 323 | if sa.getTypeDescriptor() in ('buffer', 'ndarray'): |
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324 | 324 | # always use a buffer, until memoryviews get sorted out |
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325 | 325 | sa.data = buffer(m) |
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326 | 326 | # disable memoryview support |
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327 | 327 | # if copy: |
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328 | 328 | # sa.data = buffer(m) |
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329 | 329 | # else: |
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330 | 330 | # sa.data = m.buffer |
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331 | 331 | else: |
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332 | 332 | if copy: |
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333 | 333 | sa.data = m |
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334 | 334 | else: |
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335 | 335 | sa.data = m.bytes |
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336 | 336 | |
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337 | 337 | kwargs[k] = uncan(unserialize(sa), g) |
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338 | 338 | |
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339 | 339 | return f,args,kwargs |
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340 | 340 | |
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341 | 341 | #-------------------------------------------------------------------------- |
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342 | 342 | # helpers for implementing old MEC API via view.apply |
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343 | 343 | #-------------------------------------------------------------------------- |
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344 | 344 | |
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345 | 345 | def interactive(f): |
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346 | 346 | """decorator for making functions appear as interactively defined. |
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347 | 347 | This results in the function being linked to the user_ns as globals() |
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348 | 348 | instead of the module globals(). |
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349 | 349 | """ |
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350 | 350 | f.__module__ = '__main__' |
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351 | 351 | return f |
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352 | 352 | |
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353 | 353 | @interactive |
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354 | 354 | def _push(ns): |
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355 | 355 | """helper method for implementing `client.push` via `client.apply`""" |
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356 | 356 | globals().update(ns) |
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357 | 357 | |
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358 | 358 | @interactive |
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359 | 359 | def _pull(keys): |
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360 | 360 | """helper method for implementing `client.pull` via `client.apply`""" |
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361 | 361 | user_ns = globals() |
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362 | 362 | if isinstance(keys, (list,tuple, set)): |
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363 | 363 | for key in keys: |
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364 | 364 | if not user_ns.has_key(key): |
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365 | 365 | raise NameError("name '%s' is not defined"%key) |
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366 | 366 | return map(user_ns.get, keys) |
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367 | 367 | else: |
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368 | 368 | if not user_ns.has_key(keys): |
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369 | 369 | raise NameError("name '%s' is not defined"%keys) |
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370 | 370 | return user_ns.get(keys) |
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371 | 371 | |
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372 | 372 | @interactive |
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373 | 373 | def _execute(code): |
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374 | 374 | """helper method for implementing `client.execute` via `client.apply`""" |
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375 | 375 | exec code in globals() |
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376 | 376 | |
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377 | 377 | #-------------------------------------------------------------------------- |
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378 | 378 | # extra process management utilities |
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379 | 379 | #-------------------------------------------------------------------------- |
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380 | 380 | |
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381 | 381 | _random_ports = set() |
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382 | 382 | |
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383 | 383 | def select_random_ports(n): |
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384 | 384 | """Selects and return n random ports that are available.""" |
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385 | 385 | ports = [] |
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386 | 386 | for i in xrange(n): |
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387 | 387 | sock = socket.socket() |
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388 | 388 | sock.bind(('', 0)) |
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389 | 389 | while sock.getsockname()[1] in _random_ports: |
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390 | 390 | sock.close() |
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391 | 391 | sock = socket.socket() |
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392 | 392 | sock.bind(('', 0)) |
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393 | 393 | ports.append(sock) |
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394 | 394 | for i, sock in enumerate(ports): |
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395 | 395 | port = sock.getsockname()[1] |
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396 | 396 | sock.close() |
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397 | 397 | ports[i] = port |
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398 | 398 | _random_ports.add(port) |
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399 | 399 | return ports |
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400 | 400 | |
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401 | 401 | def signal_children(children): |
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402 | 402 | """Relay interupt/term signals to children, for more solid process cleanup.""" |
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403 | 403 | def terminate_children(sig, frame): |
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404 | 404 | log = Application.instance().log |
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405 | 405 | log.critical("Got signal %i, terminating children..."%sig) |
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406 | 406 | for child in children: |
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407 | 407 | child.terminate() |
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408 | 408 | |
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409 | 409 | sys.exit(sig != SIGINT) |
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410 | 410 | # sys.exit(sig) |
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411 | 411 | for sig in (SIGINT, SIGABRT, SIGTERM): |
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412 | 412 | signal(sig, terminate_children) |
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413 | 413 | |
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414 | 414 | def generate_exec_key(keyfile): |
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415 | 415 | import uuid |
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416 | 416 | newkey = str(uuid.uuid4()) |
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417 | 417 | with open(keyfile, 'w') as f: |
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418 | 418 | # f.write('ipython-key ') |
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419 | 419 | f.write(newkey+'\n') |
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420 | 420 | # set user-only RW permissions (0600) |
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421 | 421 | # this will have no effect on Windows |
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422 | 422 | os.chmod(keyfile, stat.S_IRUSR|stat.S_IWUSR) |
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423 | 423 | |
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424 | 424 | |
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425 | 425 | def integer_loglevel(loglevel): |
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426 | 426 | try: |
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427 | 427 | loglevel = int(loglevel) |
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428 | 428 | except ValueError: |
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429 | 429 | if isinstance(loglevel, str): |
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430 | 430 | loglevel = getattr(logging, loglevel) |
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431 | 431 | return loglevel |
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432 | 432 | |
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433 | 433 | def connect_logger(logname, context, iface, root="ip", loglevel=logging.DEBUG): |
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434 | 434 | logger = logging.getLogger(logname) |
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435 | 435 | if any([isinstance(h, handlers.PUBHandler) for h in logger.handlers]): |
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436 | 436 | # don't add a second PUBHandler |
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437 | 437 | return |
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438 | 438 | loglevel = integer_loglevel(loglevel) |
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439 | 439 | lsock = context.socket(zmq.PUB) |
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440 | 440 | lsock.connect(iface) |
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441 | 441 | handler = handlers.PUBHandler(lsock) |
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442 | 442 | handler.setLevel(loglevel) |
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443 | 443 | handler.root_topic = root |
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444 | 444 | logger.addHandler(handler) |
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445 | 445 | logger.setLevel(loglevel) |
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446 | 446 | |
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447 | 447 | def connect_engine_logger(context, iface, engine, loglevel=logging.DEBUG): |
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448 | 448 | logger = logging.getLogger() |
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449 | 449 | if any([isinstance(h, handlers.PUBHandler) for h in logger.handlers]): |
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450 | 450 | # don't add a second PUBHandler |
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451 | 451 | return |
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452 | 452 | loglevel = integer_loglevel(loglevel) |
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453 | 453 | lsock = context.socket(zmq.PUB) |
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454 | 454 | lsock.connect(iface) |
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455 | 455 | handler = EnginePUBHandler(engine, lsock) |
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456 | 456 | handler.setLevel(loglevel) |
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457 | 457 | logger.addHandler(handler) |
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458 | 458 | logger.setLevel(loglevel) |
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459 | 459 | return logger |
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460 | 460 | |
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461 | 461 | def local_logger(logname, loglevel=logging.DEBUG): |
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462 | 462 | loglevel = integer_loglevel(loglevel) |
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463 | 463 | logger = logging.getLogger(logname) |
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464 | 464 | if any([isinstance(h, logging.StreamHandler) for h in logger.handlers]): |
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465 | 465 | # don't add a second StreamHandler |
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466 | 466 | return |
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467 | 467 | handler = logging.StreamHandler() |
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468 | 468 | handler.setLevel(loglevel) |
|
469 | formatter = logging.Formatter("%(asctime)s.%(msecs).03d [%(name)s] %(message)s", | |
|
470 | datefmt="%Y-%m-%d %H:%M:%S") | |
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471 | handler.setFormatter(formatter) | |
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472 | ||
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469 | 473 | logger.addHandler(handler) |
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470 | 474 | logger.setLevel(loglevel) |
|
471 | 475 | return logger |
|
472 | 476 |
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