Mercurial > hg > carton
annotate carton.py @ 31:8fef97a25925
near version bump and documentation
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Mon, 11 Jul 2011 12:56:46 -0700 |
| parents | 0b9c124f128b |
| children | 122c56779f2b |
| rev | line source |
|---|---|
| 0 | 1 #!/usr/bin/env python |
| 2 | |
| 3 """ | |
| 29 | 4 make a self-extracting virtualenv from directories or URLs of packages |
| 5 | |
| 6 To package up all files in a virtualenvs source directory (e.g.):: | |
| 0 | 7 |
| 29 | 8 python path/to/carton.py myproject project/src/* |
| 9 | |
| 10 This will create a self-extracting file, `myproject.py`, that will unfold | |
| 11 a virtualenv with the specified packages setup for development | |
| 0 | 12 |
| 29 | 13 The sources may be directories, local or HTTP-accessible tarballs, or ordinary |
| 14 files. The `setup.py`s found in the `src` directory after extraction will be | |
| 15 run (via `python setup.py develop`) in the order they are provided. This makes | |
| 16 it possible to have completely local dependencies (without touching the net) | |
| 17 by correctly specifying the source order. If a `setup.py` is overwritten from | |
| 18 a later source, it will not be rerun (known limitation). | |
| 0 | 19 |
| 29 | 20 The extracted virtualenv will be created in the current directory and will have |
| 21 the same name as provided initially (e.g. `myproject`) unless `--env` is | |
| 22 specified. | |
| 23 | |
| 24 Normally, the entire contents of source directories are compressed and | |
| 25 packaged as-is. When running with the `--package` flag, a source tarball is | |
| 26 produced via `python setup.py sdist` if the directory contains a top-level | |
| 27 `setup.py`. | |
| 28 | |
| 29 Since directories are compressed as-is, portable file-based VCS repositories, | |
| 30 such a mercurial and git, may be cartoned this way (though note that newer | |
| 31 repositories may not be backwards-compatible with older clients). | |
| 0 | 32 """ |
| 33 | |
| 34 # imports | |
| 35 import os | |
| 36 import sys | |
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37 import subprocess |
| 0 | 38 import tarfile |
| 39 import tempfile | |
| 40 import urllib2 | |
| 41 from optparse import OptionParser | |
| 42 from StringIO import StringIO | |
| 43 | |
| 44 # global variables | |
| 45 usage = "%prog [options] environment_name directory|url [...]" | |
| 46 virtualenv_url = 'http://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.6.1.tar.gz' | |
| 47 template = """#!/usr/bin/env python | |
| 48 | |
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49 "create a virtualenv at %(ENV)s" |
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50 |
| 0 | 51 import os |
| 52 import shutil | |
| 53 import subprocess | |
| 54 import sys | |
| 55 import tarfile | |
| 56 import tempfile | |
| 57 from optparse import OptionParser | |
| 58 from StringIO import StringIO | |
| 59 | |
| 60 try: | |
| 61 call = subprocess.check_call | |
| 62 except AttributeError: | |
| 63 # old python; boo :( | |
| 64 call = subprocess.call | |
| 65 | |
| 66 # virtualenv name | |
| 67 ENV='''%(ENV)s''' | |
| 68 | |
| 69 # packed files | |
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70 VIRTUAL_ENV='''%(VIRTUAL_ENV)s'''.decode('base64').decode('zlib') |
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71 PACKAGE_SOURCES=%(PACKAGE_SOURCES)s |
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72 CARTON=%(CARTON)s |
| 0 | 73 |
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74 # parse options |
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75 usage = os.path.basename(sys.argv[0]) + ' [options]' |
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76 parser = OptionParser(usage=usage, description=__doc__) |
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77 parser.add_option('--env', dest='env', help="environment name [DEFAULT: " + ENV + "]") |
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78 options, args = parser.parse_args() |
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79 if options.env: |
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80 ENV = options.env |
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81 |
| 0 | 82 # unpack virtualenv |
| 83 tempdir = tempfile.mkdtemp() | |
| 84 buffer = StringIO() | |
| 85 buffer.write(VIRTUAL_ENV) | |
| 86 buffer.seek(0) | |
| 87 tf = tarfile.open(mode='r', fileobj=buffer) | |
| 88 tf.extractall(tempdir) | |
| 89 | |
| 90 # find the virtualenv | |
| 91 for root, dirs, files in os.walk(tempdir): | |
| 92 if 'virtualenv.py' in files: | |
| 93 virtualenv = os.path.join(root, 'virtualenv.py') | |
| 94 break | |
| 95 else: | |
| 96 raise Exception("virtualenv.py not found in " + tempdir) | |
| 97 | |
| 98 # create the virtualenv | |
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99 os.environ.pop('PYTHONHOME', None) |
| 0 | 100 call([sys.executable, virtualenv, ENV]) |
| 101 | |
| 102 # find the bin/scripts directory | |
| 103 for i in ('bin', 'Scripts'): | |
| 104 scripts_dir = os.path.abspath(os.path.join(ENV, i)) | |
| 105 if os.path.exists(scripts_dir): | |
| 106 break | |
| 107 else: | |
| 108 raise Exception("Scripts directory not found in " + ENV) | |
| 109 | |
| 110 # find the virtualenv's python | |
| 111 for i in ('python', 'python.exe'): | |
| 112 python = os.path.join(scripts_dir, i) | |
| 113 if os.path.exists(python): | |
| 114 break | |
| 115 else: | |
| 116 raise Exception("python not found in " + scripts_dir) | |
| 117 | |
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118 # unpack the sources and setup for development |
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119 srcdir = os.path.join(ENV, 'src') |
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120 os.mkdir(srcdir) |
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121 setup_pys = set() |
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122 for source in PACKAGE_SOURCES: |
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123 source = source.decode('base64').decode('zlib') |
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124 buffer = StringIO() |
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125 buffer.write(source) |
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126 buffer.seek(0) |
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127 tf = tarfile.open(mode='r', fileobj=buffer) |
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128 tf.extractall(srcdir) |
| 0 | 129 |
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130 # setup sources for development if there are any new setup.py files |
| 16 | 131 # TODO: ideally this would figure out dependency order for you |
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132 for i in os.listdir(srcdir): |
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133 if i in setup_pys: |
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134 continue |
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135 subdir = os.path.join(srcdir, i) |
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136 if os.path.exists(os.path.join(srcdir, i, 'setup.py')): |
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137 call([python, 'setup.py', 'develop'], cwd=subdir) |
| 29 | 138 # TODO: try `setup.py install` if develop fails for distutils packages |
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139 setup_pys.add(i) |
| 0 | 140 |
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141 # add virtualenv to the virtualenv (!) |
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142 virtualenv_dir = os.path.dirname(virtualenv) |
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143 if os.path.exists(os.path.join(virtualenv_dir, 'setup.py')): |
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144 call([python, 'setup.py', 'install'], cwd=virtualenv_dir, stdout=subprocess.PIPE) |
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145 |
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146 # add carton to the virtualenv (!) |
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147 if CARTON: |
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148 CARTON = CARTON.decode('base64').decode('zlib') |
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149 carton_filename = os.path.join(scripts_dir, 'carton.py') |
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150 f = file(carton_filename, 'w') |
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151 f.write(CARTON) |
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152 f.close() |
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153 try: |
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154 os.chmod(carton_filename, 0755) |
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155 except: |
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156 # you probably don't have os.chmod |
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157 pass |
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158 |
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159 # cleanup virtualenv tempdir |
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160 shutil.rmtree(tempdir) |
| 0 | 161 """ |
| 162 | |
| 163 def isURL(path): | |
| 164 return path.startswith('http://') or path.startswith('https://') | |
| 165 | |
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166 try: |
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167 call = subprocess.check_call |
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168 except AttributeError: |
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169 # old python; boo :( |
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170 call = subprocess.call |
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171 |
| 0 | 172 def main(args=sys.argv[1:]): |
| 173 | |
| 174 # parse CLI arguments | |
| 175 parser = OptionParser(usage=usage, description=__doc__) | |
| 176 parser.add_option('-o', dest='outfile', | |
| 177 help="specify outfile; otherwise it will come from environment_name") | |
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178 parser.add_option('-p', '--package', dest='package', |
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179 action='store_true', default=False, |
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180 help="create python packages from sources; do not take entire subdirectory") |
| 0 | 181 parser.add_option('--virtualenv', dest='virtualenv', |
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182 help="use this virtualenv URL or file tarball") |
| 0 | 183 options, args = parser.parse_args(args) |
| 184 if len(args) < 2: | |
| 185 parser.print_usage() | |
| 186 parser.exit() | |
| 187 environment = args[0] | |
| 188 if environment.endswith('.py'): | |
| 189 # stop on .py; will add it in later | |
| 190 environment = environment[:-3] | |
| 191 sources = args[1:] | |
| 192 | |
| 193 # tar up the sources | |
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194 source_array = [] |
| 0 | 195 for source in sources: |
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196 buffer = None |
| 0 | 197 |
| 198 if isURL(source): | |
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199 # remote tarball or resource |
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200 buffer = urllib2.urlopen(source).read() |
| 0 | 201 else: |
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202 # local directory or tarball |
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203 assert os.path.exists(source), "%s does not exist" % source |
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204 |
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205 # package up the source if applicable |
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206 if options.package and os.path.exists(os.path.join(source, 'setup.py')): |
| 24 | 207 |
| 208 # create a .tar.gz package | |
| 209 call([sys.executable, 'setup.py', 'sdist'], cwd=source, stdout=subprocess.PIPE) | |
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210 dist_dir = os.path.join(source, 'dist') |
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211 assert os.path.isdir(dist_dir), "dist directory not created in %s" % source |
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212 tarfiles = [i for i in os.listdir(dist_dir) |
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213 if i.endswith('.tar.gz')] |
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214 assert tarfiles, "no .tar.gz files found in %s" % dist_dir |
| 24 | 215 |
| 216 # use the last modified tarball | |
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217 def last_modified(filename): |
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218 return os.path.getmtime(os.path.join(dist_dir, filename)) |
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219 tarfiles.sort(key=last_modified) |
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220 source = os.path.join(dist_dir, tarfiles[-1]) |
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221 |
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222 if (not os.path.isdir(source)) and tarfile.is_tarfile(source): |
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223 # check for a tarball |
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224 buffer = file(source).read() |
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225 else: |
| 24 | 226 # add other sources (files and directories) to the archive |
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227 source_buffer = StringIO() |
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228 source_tar = tarfile.open(mode="w:gz", fileobj=source_buffer) |
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229 source_tar.add(source, arcname=os.path.basename(source.rstrip(os.path.sep))) |
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230 source_tar.close() |
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231 buffer = source_buffer.getvalue() |
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232 |
| 0 | 233 # could use git, hg, etc repos. but probably shouldn't |
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234 |
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235 source_array.append(buffer.encode('zlib').encode('base64')) |
| 0 | 236 |
| 237 # tar up virtualenv if not available | |
| 238 if options.virtualenv: | |
| 239 if isURL(options.virtualenv): | |
| 240 globals()['VIRTUAL_ENV'] = urllib2.urlopen(options.virtualenv).read() | |
| 241 else: | |
| 242 assert os.path.exists(options.virtualenv) | |
| 243 if os.path.isdir(options.virtualenv): | |
| 244 raise NotImplementedError("Hypothetically you should be able to use a local directory or tarball, but I haven't done this yet") | |
| 245 else: | |
| 246 # assert a tarfile | |
| 247 assert tarfile.is_tarfile(options.virtualenv), "%s must be a tar file" % options.virtualenv | |
| 248 globals()['VIRTUAL_ENV'] = file(options.virtualenv).read() | |
| 249 else: | |
| 250 globals()['VIRTUAL_ENV'] = urllib2.urlopen(virtualenv_url).read() | |
| 251 # TODO: used the below hashed value of VIRTUAL_ENV if set | |
| 252 # (set that with another file) | |
| 253 | |
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254 # get the contents of this file |
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255 carton = None |
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256 try: |
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257 if __file__: |
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258 filename = __file__.rstrip('c') # avoid pyfiles |
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259 if os.path.exists(filename): |
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260 carton = file(filename).read().encode('zlib').encode('base64') |
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261 except NameError: |
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262 pass |
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263 |
| 0 | 264 # interpolate "template" -> output |
| 30 | 265 # TODO: add the ability to include a post-deployment script |
| 0 | 266 outfile = options.outfile |
| 267 if outfile is None: | |
| 268 outfile = environment + '.py' | |
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269 variables = {'VIRTUAL_ENV': VIRTUAL_ENV.encode('zlib').encode('base64'), |
| 0 | 270 'ENV': environment, |
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271 'CARTON': repr(carton), |
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272 'PACKAGE_SOURCES': repr(source_array)} |
| 0 | 273 f = file(outfile, 'w') |
| 274 f.write(template % variables) | |
| 275 f.close() | |
| 276 try: | |
| 277 os.chmod(outfile, 0755) | |
| 278 except: | |
| 279 # you probably don't have os.chmod | |
| 280 pass | |
| 281 | |
| 282 VIRTUAL_ENV = """""" | |
| 283 | |
| 284 if __name__ == '__main__': | |
| 285 main() |