Mercurial > hg > PaInt
annotate paint/package.py @ 38:c9d8abb2026f
error handling
author | Jeff Hammel <jhammel@mozilla.com> |
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date | Fri, 30 Mar 2012 15:10:49 -0700 |
parents | 36e70712fc9a |
children | cc25499e9485 |
rev | line source |
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4 | 1 """ |
2 package model for python PAckage INTrospection | |
3 """ | |
4 | |
36 | 5 # TODO: use pkginfo.sdist more |
6 | |
7 | 7 import os |
28 | 8 import pip |
29
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9 import pypi |
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10 import shutil |
19 | 11 import subprocess |
12 import sys | |
7 | 13 import tarfile |
5 | 14 import tempfile |
7 | 15 import urllib2 |
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16 import urlparse |
7 | 17 import utils |
5 | 18 |
19 | 19 try: |
20 from subprocess import check_call as call | |
21 except ImportError: | |
22 from subporcess import call | |
23 | |
10 | 24 __all__ = ['Package'] |
25 | |
4 | 26 class Package(object): |
33 | 27 """ |
28 class for python package introspection. | |
29 constructor takes the package 'src' | |
30 """ | |
4 | 31 |
32 def __init__(self, src): | |
33 self.src = src | |
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34 |
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35 # ephemeral data |
5 | 36 self._tmppath = None |
28 | 37 self._egg_info_path = None |
33 | 38 self._build_path = None |
5 | 39 |
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40 # TODO: list of temporary files/directories to be deleted |
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41 |
34 | 42 def _path(self): |
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43 """filesystem path to package directory""" |
7 | 44 |
45 # return cached copy if it exists | |
46 if self._tmppath: | |
47 return self._tmppath | |
48 | |
49 # fetch from the web if a URL | |
50 tmpfile = None | |
51 src = self.src | |
5 | 52 if utils.isURL(self.src): |
8 | 53 tmpfile = src = self.fetch() |
7 | 54 |
55 # unpack if an archive | |
28 | 56 if self._is_archive(src): |
8 | 57 try: |
37 | 58 self._unpack(src) |
8 | 59 finally: |
60 if tmpfile: | |
61 os.remove(tmpfile) | |
7 | 62 return self._tmppath |
63 | |
5 | 64 return self.src |
65 | |
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66 def fetch(self, filename=None): |
8 | 67 """fetch from remote source to a temporary file""" |
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68 if filename is None: |
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69 fd, filename = tempfile.mkstemp() |
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70 os.close(fd) |
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71 fp = file(filename, 'w') |
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72 resource = urllib2.urlopen(self.src) |
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73 fp.write(resource.read()) |
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74 fp.close() |
7 | 75 return filename |
76 | |
37 | 77 def _unpack(self, archive): |
7 | 78 """unpack the archive to a temporary destination""" |
79 # TODO: should handle zipfile additionally at least | |
80 # Ideally, this would be pluggable, etc | |
8 | 81 assert tarfile.is_tarfile(archive), "%s is not an archive" % self.src |
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82 tf = tarfile.TarFile.open(archive) |
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83 self._tmppath = tempfile.mkdtemp() |
19 | 84 members = tf.getmembers() |
85 | |
86 # cut off the top level directory | |
37 | 87 members = [i for i in members if os.path.sep in i.name] |
19 | 88 tld = set() |
89 for member in members: | |
90 directory, member.name = member.name.split(os.path.sep, 1) | |
91 tld.add(directory) | |
92 assert len(tld) == 1 | |
93 | |
94 # extract | |
95 for member in members: | |
96 tf.extract(member, path=self._tmppath) | |
97 tf.close() | |
7 | 98 |
28 | 99 def _is_archive(self, path): |
7 | 100 """returns if the filesystem path is an archive""" |
101 # TODO: should handle zipfile additionally at least | |
102 # Ideally, this would be pluggable, etc | |
103 return tarfile.is_tarfile(path) | |
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104 |
28 | 105 def _cleanup(self): |
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106 if self._tmppath: |
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107 shutil.rmtree(self._tmppath) |
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108 self._tmppath = None |
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109 |
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110 # __del__ = cleanup |
11 | 111 |
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112 ### python-package-specific functionality |
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113 |
28 | 114 def _egg_info(self): |
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115 """build the egg_info directory""" |
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116 |
28 | 117 if self._egg_info_path: |
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118 # return cached copy |
28 | 119 return self._egg_info_path |
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120 |
34 | 121 directory = self._path() |
16 | 122 setup_py = os.path.join(directory, 'setup.py') |
123 if not os.path.exists(setup_py): | |
17 | 124 raise AssertionError("%s does not exist" % setup_py) |
11 | 125 |
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126 # setup the egg info |
38 | 127 try: |
128 call([sys.executable, 'setup.py', 'egg_info'], cwd=directory, stdout=subprocess.PIPE) | |
129 except BaseException, e: | |
130 print "Failure to generate egg_info" | |
131 print ' - src: %s' % self.src | |
132 print ' - directory: %s' % directory | |
133 raise | |
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134 |
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135 # get the .egg-info directory |
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136 egg_info = [i for i in os.listdir(directory) |
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137 if i.endswith('.egg-info')] |
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138 assert len(egg_info) == 1, 'Expected one .egg-info directory in %s, got: %s' % (directory, egg_info) |
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139 egg_info = os.path.join(directory, egg_info[0]) |
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140 assert os.path.isdir(egg_info), "%s is not a directory" % egg_info |
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141 |
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142 # cache it |
28 | 143 self._egg_info_path = egg_info |
144 return self._egg_info_path | |
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145 |
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146 def info(self): |
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147 """return info dictionary for package""" |
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148 # could use pkginfo |
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149 |
28 | 150 egg_info = self._egg_info() |
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151 |
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152 # read the package information |
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153 pkg_info = os.path.join(egg_info, 'PKG-INFO') |
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154 info_dict = {} |
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155 for line in file(pkg_info).readlines(): |
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156 if not line or line[0].isspace(): |
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157 continue # XXX neglects description |
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158 assert ':' in line |
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159 key, value = [i.strip() for i in line.split(':', 1)] |
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160 info_dict[key] = value |
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161 |
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162 # return the information |
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163 return info_dict |
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164 |
11 | 165 def dependencies(self): |
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166 """return the dependencies""" |
32 | 167 # TODO: should probably have a more detailed dict: |
168 # {'mozinfo': {'version': '>= 0.2', | |
169 # 'url': 'http://something.com/'}} | |
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170 # get the egg_info directory |
28 | 171 egg_info = self._egg_info() |
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172 |
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173 # read the dependencies |
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174 requires = os.path.join(egg_info, 'requires.txt') |
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175 if os.path.exists(requires): |
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176 dependencies = [i.strip() for i in file(requires).readlines() if i.strip()] |
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177 else: |
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178 dependencies = [] |
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179 dependencies = dict([(i, None) for i in dependencies]) |
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180 |
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181 # read the dependency links |
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182 dependency_links = os.path.join(egg_info, 'dependency_links.txt') |
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183 if os.path.exists(dependency_links): |
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184 links = [i.strip() for i in file(dependency_links).readlines() if i.strip()] |
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185 for link in links: |
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186 # XXX pretty ghetto |
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187 assert '#egg=' in link |
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188 url, dep = link.split('#egg=', 1) |
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189 if dep in dependencies: |
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190 dependencies[dep] = link |
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191 |
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192 return dependencies |
24 | 193 |
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194 def extension(self): |
35 | 195 """filename extension of the package""" |
196 | |
197 package = self.package() | |
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198 |
35 | 199 # determine the extension (XXX hacky) |
200 extensions = ('.tar.gz', '.zip', '.tar.bz2') | |
201 for ext in extensions: | |
36 | 202 if package.endswith(ext): |
35 | 203 return ext |
204 | |
205 raise Exception("Extension %s not found: %s" % (extensions, package)) | |
206 | |
207 def package(self, destination=None): | |
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208 """ |
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209 repackage the package to ensure its actually in the right form |
34 | 210 and return the path to the destination |
211 - destination: if given, path to put the build in [TODO] | |
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212 """ |
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213 |
33 | 214 if self._build_path: |
34 | 215 if destination: |
216 shutil.copy(self._build_path, destination) | |
217 return os.path.abspath(destination) | |
218 | |
219 # return cached copy | |
33 | 220 return self._build_path |
221 | |
34 | 222 path = self._path() |
223 dist = os.path.join(path, 'dist') | |
224 if os.path.exists(dist): | |
225 shutil.rmtree(dist) | |
226 | |
227 call([sys.executable, 'setup.py', 'sdist'], cwd=path, stdout=subprocess.PIPE) | |
228 | |
229 assert os.path.exists(dist) | |
230 contents = os.listdir(dist) | |
231 assert len(contents) == 1 | |
232 | |
233 self._build_path = os.path.join(dist, contents[0]) | |
234 | |
235 # destination | |
236 # use an evil recursive trick | |
237 if destination: | |
36 | 238 return self.package(destination=destination) |
34 | 239 |
240 return self._build_path | |
241 | |
24 | 242 def download(self, directory): |
243 """download a package and all its dependencies using pip""" | |
28 | 244 if not os.path.exists(directory): |
245 os.makedirs(directory) | |
246 assert os.path.isdir(directory) | |
247 pip.main(['install', '--download', directory, self.src]) | |
248 | |
249 def pypi(self, directory): | |
250 """ | |
251 download packages for a pypi directory structure | |
252 http://k0s.org/portfolio/pypi.html | |
253 """ | |
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254 if not os.path.exists(directory): |
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255 os.makedirs(directory) |
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256 assert os.path.isdir(directory) |
28 | 257 tempdir = tempfile.mkdtemp() |
258 try: | |
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259 self.download(tempdir) |
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260 for package in os.listdir(tempdir): |
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261 |
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262 # full path |
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263 src = os.path.join(tempdir, package) |
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264 |
35 | 265 # make a package of the thing |
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266 package = Package(src) |
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267 |
36 | 268 # get destination dirname, filename |
269 dirname, filename = package.pypi_path() | |
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270 |
36 | 271 # make the directory if it doesn't exist |
272 subdir = os.path.join(directory, dirname) | |
273 if not os.path.exists(subdir): | |
274 os.makedirs(subdir) | |
275 assert os.path.isdir(subdir) | |
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276 |
36 | 277 # move the file |
278 self.package(destination=os.path.join(subdir, filename)) | |
28 | 279 finally: |
280 shutil.rmtree(tempdir) | |
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281 |
36 | 282 def pypi_path(self): |
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283 """ |
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284 returns subpath 2-tuple appropriate for pypi path structure: |
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285 http://k0s.org/portfolio/pypi.html |
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286 """ |
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287 info = self.info() |
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288 |
36 | 289 # determine the extension |
290 extension = self.extension() | |
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291 |
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292 # get the filename destination |
36 | 293 name = info['Name'] |
294 version = info['Version'] | |
295 filename = '%s-%s%s' % (name, version, extension) | |
296 return name, filename |