Mercurial > treepkg > treepkg
annotate treepkg/packager.py @ 131:bea9f1cc0bef
Try to determine dependencies only when treepkg is fully configured.
That is, don't try to parse debian/control if the debian directory does
not exist, a situation that most likely happens when running
bin/inittreepkg.py to configure the tree packager instance.
author | Bernhard Herzog <bh@intevation.de> |
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date | Fri, 23 May 2008 17:44:15 +0000 |
parents | 5155b4f9443d |
children | e5b4dea52297 |
rev | line source |
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1 # Copyright (C) 2007, 2008 by Intevation GmbH |
0 | 2 # Authors: |
3 # Bernhard Herzog <bh@intevation.de> | |
4 # | |
5 # This program is free software under the GPL (>=v2) | |
6 # Read the file COPYING coming with the software for details. | |
7 | |
8 """Classes to automatically build debian packages from subversion checkouts""" | |
9 | |
10 import os | |
11 import time | |
12 import re | |
13 import logging | |
14 import shutil | |
16
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15 import datetime |
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16 import new |
0 | 17 |
18 import util | |
19 import subversion | |
20 import run | |
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21 import status |
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22 import debian |
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23 from cmdexpand import cmdexpand |
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24 from builder import PBuilder |
0 | 25 |
26 def _filenameproperty(relative_dir): | |
27 def get(self): | |
28 return os.path.join(self.base_dir, relative_dir) | |
29 return property(get) | |
30 | |
31 | |
32 class SourcePackager(object): | |
33 | |
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34 # Derived classes must supply the package basename |
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35 pkg_basename = None |
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36 |
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37 def __init__(self, track, status, work_dir, src_dir, revision): |
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38 self.track = track |
0 | 39 self.status = status |
40 self.work_dir = work_dir | |
41 self.src_dir = src_dir | |
42 self.revision = revision | |
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43 assert(self.pkg_basename) |
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45 def determine_package_version(self, directory): | |
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46 """Returns the version number of the new package as a string |
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47 |
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48 The directory parameter is the name of the directory containing |
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49 the newly exported sources. The sources were exported with the |
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50 export_sources method. |
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51 |
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52 The default implementation simply returns the revision converted |
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53 to a string. |
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54 """ |
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55 return str(self.revision) |
0 | 56 |
57 def export_sources(self): | |
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58 """Export the sources from the subversion working directory |
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59 |
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60 This method first exports the sources to a temporary directory |
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61 and then renames the directory. The new name is of the form |
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62 |
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63 <pkg_basename>-<version> |
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64 |
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65 Where pkg_basename is the value of self.pkg_basename and version |
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66 is the return value of the determine_package_version() method. |
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67 """ |
0 | 68 temp_dir = os.path.join(self.work_dir, "temp") |
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69 self.track.export_sources(temp_dir) |
0 | 70 |
71 pkgbaseversion = self.determine_package_version(temp_dir) | |
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72 pkgbasedir = os.path.join(self.work_dir, |
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73 self.pkg_basename + "-" + pkgbaseversion) |
0 | 74 |
75 os.rename(temp_dir, pkgbasedir) | |
76 return pkgbaseversion, pkgbasedir | |
77 | |
78 | |
79 def update_version_numbers(self, pkgbasedir): | |
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80 """Updates the version numbers in the code in pkgbasedir. |
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81 |
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82 The default implementation does nothing. Derived classes should |
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83 override this method if necessary. |
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84 """ |
0 | 85 |
86 def create_tarball(self, tarballname, workdir, basedir): | |
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87 """Creates a new tarball. |
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88 |
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89 Parameters: |
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90 |
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91 tarballname -- the filename of the new tarball |
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92 workdir -- The directory into which to change before running tar. |
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93 (actually this is done with GNUI tar's -C option) |
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94 basedir -- The basedirectory of the files that are packaged |
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95 into the tarfile. This should be a relative |
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96 filename directly in workdir. |
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97 """ |
0 | 98 logging.info("Creating tarball %r", tarballname) |
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99 run.call(cmdexpand("tar czf $tarballname -C $workdir $basedir", |
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100 **locals())) |
0 | 101 |
102 def copy_debian_directory(self, pkgbasedir, pkgbaseversion, changemsg): | |
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103 """Copies the debian directory and updates the copy's changelog |
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104 |
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105 Parameter: |
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106 pkgbasedir -- The directory holding the unpacked source package |
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107 pkgbaseversion -- The version to update the changelog to |
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108 changemsg -- The message for the changelog |
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109 |
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110 When determining the actual version for the new package, this |
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111 function looks at the previous version in the changelog. If it |
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112 has a prefix separated from the version number by a colon this |
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113 prefix is prepended to the pkgbaseversion parameter. Debian |
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114 uses such prefixes for the kde packages. |
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115 """ |
0 | 116 debian_dir = os.path.join(pkgbasedir, "debian") |
117 changelog = os.path.join(debian_dir, "changelog") | |
118 | |
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119 self.track.copy_debian_directory(debian_dir) |
0 | 120 |
121 logging.info("Updating %r", changelog) | |
122 oldversion = util.debian_changelog_version(changelog) | |
123 if ":" in oldversion: | |
124 oldversionprefix = oldversion.split(":")[0] + ":" | |
125 else: | |
126 oldversionprefix = "" | |
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127 debrev = self.track.debrevision_prefix + "1" |
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128 run.call(cmdexpand("debchange -c $changelog" |
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129 " -v ${oldversionprefix}${pkgbaseversion}-${debrev}" |
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130 " $changemsg", **locals()), |
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131 env=self.track.debian_environment()) |
0 | 132 |
133 | |
134 def create_source_package(self, pkgbasedir, origtargz): | |
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135 """Creates a new source package from pkgbasedir and origtargz""" |
0 | 136 logging.info("Creating new source package") |
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137 run.call(cmdexpand("dpkg-source -b $directory $tarball", |
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138 directory=os.path.basename(pkgbasedir), |
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139 tarball=os.path.basename(origtargz)), |
0 | 140 cwd=os.path.dirname(pkgbasedir), |
141 suppress_output=True, | |
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142 env=self.track.debian_environment()) |
0 | 143 |
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144 def move_source_package(self, pkgbasename): |
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145 """Moves the new source package from the work_dir to the src_dir""" |
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146 logging.info("Moving source package to %r", self.src_dir) |
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147 util.ensure_directory(self.src_dir) |
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148 for filename in [filename for filename in os.listdir(self.work_dir) |
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149 if filename.startswith(pkgbasename)]: |
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150 os.rename(os.path.join(self.work_dir, filename), |
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151 os.path.join(self.src_dir, filename)) |
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152 |
0 | 153 def package(self): |
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154 """Creates a source package from a subversion checkout. |
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155 |
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156 After setting up the working directory, this method calls the |
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157 do_package method to do the actual packaging. Afterwards the |
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158 work directory is removed. |
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159 """ |
0 | 160 util.ensure_directory(self.work_dir) |
161 try: | |
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162 self.status.creating_source_package() |
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163 self.do_package() |
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164 self.status.source_package_created() |
0 | 165 finally: |
166 logging.info("Removing workdir %r", self.work_dir) | |
167 shutil.rmtree(self.work_dir) | |
168 | |
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169 def do_package(self): |
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170 """Does the work of creating a source package |
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171 This method must be overriden by derived classes. |
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172 |
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173 The method should do the work in self.work_dir. When the |
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174 package is done, the source package files should be in |
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175 self.src_dir. |
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176 """ |
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177 raise NotImplementedError |
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178 |
0 | 179 |
180 class BinaryPackager(object): | |
181 | |
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182 def __init__(self, track, status, binary_dir, dsc_file, logfile): |
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183 self.track = track |
0 | 184 self.status = status |
185 self.binary_dir = binary_dir | |
186 self.dsc_file = dsc_file | |
187 self.logfile = logfile | |
188 | |
189 def package(self): | |
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190 self.status.creating_binary_package() |
0 | 191 util.ensure_directory(self.binary_dir) |
54 | 192 logging.info("Building binary package; logging to %r", self.logfile) |
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193 self.track.builder.build(self.dsc_file, self.binary_dir, self.logfile) |
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194 self.status.binary_package_created() |
0 | 195 |
196 | |
197 class RevisionPackager(object): | |
198 | |
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199 source_packager_cls = SourcePackager |
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200 binary_packager_cls = BinaryPackager |
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201 |
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202 def __init__(self, track, revision): |
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203 self.track = track |
0 | 204 self.revision = revision |
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205 self.base_dir = self.track.pkg_dir_for_revision(self.revision, 1) |
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206 self.status = status.RevisionStatus(os.path.join(self.base_dir, |
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207 "status")) |
0 | 208 |
209 work_dir = _filenameproperty("work") | |
210 binary_dir = _filenameproperty("binary") | |
211 src_dir = _filenameproperty("src") | |
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212 build_log = _filenameproperty("build.log") |
0 | 213 |
214 def find_dsc_file(self): | |
215 for filename in os.listdir(self.src_dir): | |
216 if filename.endswith(".dsc"): | |
217 return os.path.join(self.src_dir, filename) | |
218 return None | |
219 | |
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220 def has_build_log(self): |
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221 return os.path.exists(self.build_log) |
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222 |
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223 def list_source_files(self): |
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224 """Returns a list with the names of the files of the source package. |
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225 The implementation assumes that all files in self.src_dir belong |
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226 to the source package. |
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227 """ |
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228 return sorted(util.listdir_abs(self.src_dir)) |
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229 |
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230 def list_binary_files(self): |
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231 """Returns a list with the names of the files of the binary packages. |
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232 The implementation assumes that all files in self.binary_dir belong |
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233 to the binary packages. |
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234 """ |
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235 return sorted(util.listdir_abs(self.binary_dir)) |
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236 |
0 | 237 def package(self): |
238 try: | |
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239 util.ensure_directory(self.work_dir) |
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240 self.status.start = datetime.datetime.utcnow() |
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241 src_packager = self.source_packager_cls(self.track, self.status, |
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242 self.work_dir, self.src_dir, |
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243 self.revision) |
0 | 244 src_packager.package() |
245 | |
246 dsc_file = self.find_dsc_file() | |
247 if dsc_file is None: | |
248 raise RuntimeError("Cannot find dsc File in %r" % self.src_dir) | |
249 | |
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250 bin_packager = self.binary_packager_cls(self.track, self.status, |
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251 self.binary_dir, dsc_file, |
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252 self.build_log) |
0 | 253 bin_packager.package() |
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254 self.status.stop = datetime.datetime.utcnow() |
0 | 255 except: |
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256 self.status.error() |
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257 self.status.stop = datetime.datetime.utcnow() |
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258 # set the notification status last to avoid race conditions. |
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259 # The pending notification is for now the only situation |
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260 # where another process might modify the status file (the |
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261 # listpendingnotifications program will set it to |
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262 # "notification_sent") |
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263 self.status.notification_pending() |
0 | 264 raise |
265 | |
266 def remove_package_dir(self): | |
267 logging.info("Removing pkgdir %r", self.base_dir) | |
268 shutil.rmtree(self.base_dir) | |
269 | |
270 | |
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271 class PackageTrack(object): |
0 | 272 |
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273 revision_packager_cls = RevisionPackager |
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274 |
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275 svn_external_subdirs = [] |
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276 |
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277 extra_config_desc = [] |
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278 |
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279 def __init__(self, name, base_dir, svn_url, root_cmd, pbuilderrc, deb_email, |
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280 deb_fullname, packager_class="treepkg.packager", |
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281 debrevision_prefix="treepkg", handle_dependencies=False): |
0 | 282 self.name = name |
283 self.base_dir = base_dir | |
284 self.svn_url = svn_url | |
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285 self.builder = PBuilder(pbuilderrc, root_cmd) |
0 | 286 self.deb_email = deb_email |
287 self.deb_fullname = deb_fullname | |
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288 self.debrevision_prefix = debrevision_prefix |
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289 self.handle_dependencies = handle_dependencies |
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290 self.dependencies = None |
0 | 291 self.pkg_dir_template = "%(revision)d-%(increment)d" |
292 self.pkg_dir_regex \ | |
293 = re.compile(r"(?P<revision>[0-9]+)-(?P<increment>[0-9]+)$") | |
294 | |
295 checkout_dir = _filenameproperty("checkout") | |
296 debian_dir = _filenameproperty("debian") | |
297 pkg_dir = _filenameproperty("pkg") | |
298 | |
106
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299 def init_treepkg(self): |
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300 print "Initializing", self.name |
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301 if not os.path.exists(self.base_dir): |
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302 print "creating %s" % (self.base_dir,) |
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303 util.ensure_directory(self.base_dir) |
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304 if not os.path.exists(self.debian_dir): |
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305 print ("TODO: the debian directory %s still has to be created" |
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306 % (self.debian_dir,)) |
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307 |
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308 def determine_dependencies(self): |
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309 if self.dependencies is not None: |
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310 return |
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311 |
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312 requires = () |
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313 provides = () |
131
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314 # only try to parse the control file if the debian directory |
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315 # exists. If the debian directory doesn't exist yet, the tree |
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316 # packager is likely still being configured and this code may be |
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317 # run indirectly from e. g. bin/inittreepkg.py in which case the |
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318 # init_treepkg method will report the missing debian |
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319 if self.handle_dependencies and os.path.exists(self.debian_dir): |
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320 control = debian.DebianControlFile(os.path.join(self.debian_dir, |
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321 "control")) |
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322 requires = control.build_depends |
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323 provides = (pkg[0] for pkg in control.packages) |
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324 self.dependencies = (set(requires), set(provides)) |
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325 logging.debug("Track %s: build depends: %s", self.name, |
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326 " ".join(self.dependencies[0])) |
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327 logging.debug("Track %s: provides: %s", self.name, |
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328 " ".join(self.dependencies[1])) |
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329 |
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330 def dependencies_required(self): |
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331 """Returns a list of required packages""" |
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332 self.determine_dependencies() |
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333 return self.dependencies[0] |
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334 |
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335 def dependencies_provided(self): |
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336 """Returns a list of provided packages""" |
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337 self.determine_dependencies() |
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338 return self.dependencies[1] |
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339 |
0 | 340 def pkg_dir_for_revision(self, revision, increment): |
341 return os.path.join(self.pkg_dir, | |
342 self.pkg_dir_template % locals()) | |
343 | |
344 def last_changed_revision(self): | |
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345 revisions = [] |
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346 for directory in [self.checkout_dir] + self.svn_external_subdirs: |
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347 directory = os.path.join(self.checkout_dir, directory) |
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348 revisions.append(subversion.last_changed_revision(directory)) |
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349 return max(revisions) |
0 | 350 |
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351 def get_revision_numbers(self): |
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352 """Returns a list of the numbers of the packaged revisions""" |
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353 revisions = [] |
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354 if os.path.exists(self.pkg_dir): |
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355 for filename in os.listdir(self.pkg_dir): |
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356 match = self.pkg_dir_regex.match(filename) |
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357 if match: |
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358 revisions.append(int(match.group("revision"))) |
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359 revisions.sort() |
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360 return revisions |
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361 |
0 | 362 def last_packaged_revision(self): |
363 """Returns the revision number of the highest packaged revision. | |
364 | |
365 If the revision cannot be determined because no already packaged | |
366 revisions can be found, the function returns -1. | |
367 """ | |
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368 return max([-1] + self.get_revision_numbers()) |
0 | 369 |
370 def debian_source(self): | |
371 return util.extract_value_for_key(open(os.path.join(self.debian_dir, | |
372 "control")), | |
373 "Source:") | |
374 | |
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375 def update_checkout(self, revision=None): |
0 | 376 """Updates the working copy of self.svn_url in self.checkout_dir. |
377 | |
378 If self.checkout_dir doesn't exist yet, self.svn_url is checked | |
80
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379 out into that directory. The value of the revision parameter is |
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380 passed through to subversion.update. |
0 | 381 """ |
382 localdir = self.checkout_dir | |
383 if os.path.exists(localdir): | |
384 logging.info("Updating the working copy in %r", localdir) | |
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385 subversion.update(localdir, revision=revision) |
0 | 386 else: |
387 logging.info("The working copy in %r doesn't exist yet." | |
26 | 388 " Checking out from %r", localdir, |
0 | 389 self.svn_url) |
390 subversion.checkout(self.svn_url, localdir) | |
391 | |
392 def export_sources(self, to_dir): | |
393 logging.info("Exporting sources for tarball to %r", to_dir) | |
394 subversion.export(self.checkout_dir, to_dir) | |
395 # some versions of svn (notably version 1.4.2 shipped with etch) | |
396 # do export externals such as the admin subdirectory. We may | |
397 # have to do that in an extra step. | |
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398 for subdir in self.svn_external_subdirs: |
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399 absdir = os.path.join(to_dir, subdir) |
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400 if not os.path.isdir(absdir): |
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401 subversion.export(os.path.join(self.checkout_dir, subdir), |
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402 absdir) |
0 | 403 |
404 def copy_debian_directory(self, to_dir): | |
405 logging.info("Copying debian directory to %r", to_dir) | |
406 shutil.copytree(self.debian_dir, to_dir) | |
407 | |
408 def debian_environment(self): | |
409 """Returns the environment variables for the debian commands""" | |
410 env = os.environ.copy() | |
411 env["DEBFULLNAME"] = self.deb_fullname | |
412 env["DEBEMAIL"] = self.deb_email | |
413 return env | |
414 | |
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415 def package_if_updated(self, revision=None): |
0 | 416 """Checks if the checkout changed and returns a new packager if so""" |
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417 self.update_checkout(revision=revision) |
0 | 418 current_revision = self.last_changed_revision() |
419 logging.info("New revision is %d", current_revision) | |
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420 if current_revision not in self.get_revision_numbers(): |
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421 logging.info("Revision %d has not been packaged yet", |
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422 current_revision) |
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423 return self.revision_packager_cls(self, current_revision) |
0 | 424 else: |
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425 logging.info("Revision %d has already been packaged.", |
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426 current_revision) |
0 | 427 |
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428 def get_revisions(self): |
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429 """Returns RevisionPackager objects for each packaged revision""" |
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430 return [self.revision_packager_cls(self, revision) |
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431 for revision in self.get_revision_numbers()] |
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432 |
0 | 433 |
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434 def import_packager_module(packager_class): |
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435 """Import the packager module named by packager_class. |
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436 |
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437 The packager_class must be the full absolute module name for the |
125
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438 packager. The function tries to find or create a suitable |
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439 PackageTrack class from this module using the following rules: |
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440 |
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441 - If the module contains a class called PackageTrack, use that. |
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442 |
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443 - Otherwise create one using the module's RevisionPackager class, |
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444 creating RevisionPackager if necessary. |
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445 |
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446 - If RevisionPackager needs to be created, it uses the module's |
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447 SourcePackager as source_packager_cls and if present also the |
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448 module's BinaryPackager as binary_packager_cls. If the module |
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449 does not have a BinaryPackager, the default BinaryPackager is |
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450 used. |
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451 """ |
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452 module = util.import_dotted_name(packager_class) |
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453 if not hasattr(module, "PackageTrack"): |
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454 if not hasattr(module, "RevisionPackager"): |
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455 binary_packager = getattr(module, "BinaryPackager", BinaryPackager) |
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456 module.RevisionPackager \ |
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457 = new.classobj("RevisionPackager", (RevisionPackager,), |
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458 dict(source_packager_cls=module.SourcePackager, |
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459 binary_packager_cls=binary_packager)) |
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460 module.PackageTrack \ |
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461 = new.classobj("PackageTrack", (PackageTrack,), |
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462 dict(revision_packager_cls=module.RevisionPackager)) |
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463 return module |
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464 |
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465 def create_package_track(packager_class, **kw): |
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466 module = import_packager_module(packager_class) |
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467 return module.PackageTrack(**kw) |
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468 |
0 | 469 |
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470 class CyclicDependencyError(Exception): |
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471 |
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472 """Exception thrown when a cycle is detected in the track dependencies""" |
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473 |
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474 def __init__(self, tracks): |
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475 Exception.__init__(self, |
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476 "Cyclic dependencies between" " tracks (%s)" |
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477 % ", ".join([track.name for track in tracks])) |
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478 |
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479 |
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480 class PackagerGroup(object): |
0 | 481 |
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482 def __init__(self, package_tracks, check_interval, revision=None, |
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483 instructions_file=None): |
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484 self.package_tracks = package_tracks |
0 | 485 self.check_interval = check_interval |
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486 self.revision = revision |
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487 self.instructions_file = instructions_file |
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488 self.instructions_file_removed = False |
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489 self.sort_tracks() |
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490 |
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491 def sort_tracks(self): |
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492 """Sorts tracks for dependency handling""" |
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493 todo = self.package_tracks[:] |
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494 sorted = [] |
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495 seen = set() |
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496 |
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497 # dependencies that can be solved by one of the tracks |
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498 known = set() |
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499 for track in todo: |
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500 known |= track.dependencies_provided() |
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501 |
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502 while todo: |
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503 todo_again = [] |
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504 for track in todo: |
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505 if not track.handle_dependencies: |
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506 sorted.append(track) |
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507 continue |
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508 |
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509 unmet = (track.dependencies_required() & known) - seen |
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510 if unmet: |
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511 todo_again.append(track) |
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512 else: |
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513 sorted.append(track) |
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514 seen |= track.dependencies_provided() |
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515 if todo_again == todo: |
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516 raise CyclicDependencyError(todo) |
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517 todo = todo_again |
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518 |
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519 self.package_tracks = sorted |
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520 self.needed_binaries = set() |
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521 for track in self.package_tracks: |
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522 self.needed_binaries |= track.dependencies_required() |
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523 self.needed_binaries &= known |
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524 |
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525 logging.info("sorted track order: %s", |
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526 " ".join(track.name for track in sorted)) |
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527 logging.info("binary packages needed as build dependencies: %s", |
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528 " ".join(self.needed_binaries)) |
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529 |
0 | 530 |
531 def run(self): | |
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532 """Runs the packager group indefinitely""" |
78
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533 logging.info("Starting in periodic check mode." |
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534 " Will check every %d seconds", self.check_interval) |
0 | 535 last_check = -1 |
536 while 1: | |
537 now = time.time() | |
538 if now > last_check + self.check_interval: | |
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539 if self.check_package_tracks(): |
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540 break |
0 | 541 last_check = now |
542 next_check = now + self.check_interval | |
543 to_sleep = next_check - time.time() | |
544 if to_sleep > 0: | |
545 logging.info("Next check at %s", | |
546 time.strftime("%Y-%m-%d %H:%M:%S", | |
547 time.localtime(next_check))) | |
548 time.sleep(to_sleep) | |
549 else: | |
550 logging.info("Next check now") | |
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551 if self.should_stop(): |
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552 logging.info("Received stop instruction. Stopping.") |
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553 return |
0 | 554 |
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555 def check_package_tracks(self): |
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556 logging.info("Checking package tracks") |
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557 self.clear_instruction() |
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558 repeat = True |
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559 while repeat: |
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560 repeat = False |
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561 for track in self.package_tracks: |
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562 try: |
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563 packager = track.package_if_updated(revision=self.revision) |
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564 if packager: |
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565 packager.package() |
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566 repeat = self.install_dependencies(track, packager) |
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567 if self.should_stop(): |
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568 logging.info("Received stop instruction. Stopping.") |
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569 return True |
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570 except: |
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571 logging.exception("An error occurred while" |
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572 " checking packager track %r", track.name) |
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573 if repeat: |
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574 logging.info("Built binaries needed by other tracks." |
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575 " Starting over to ensure all dependencies" |
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576 " are met") |
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577 break |
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578 |
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579 logging.info("Checked all package tracks") |
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580 |
128
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581 |
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582 def install_dependencies(self, track, packager): |
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583 """Add the binaries built by packager to the builder, if necessary. |
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584 It is necessary if any track depends on the packages. The |
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585 method simply installs all binary files built by the packger |
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586 instead of only those which are immediately required by a track. |
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587 This is done because tracks usually depend directly only on the |
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588 -dev packages which usually require another binary package built |
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589 at the same time. |
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590 """ |
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591 if (track.handle_dependencies |
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592 and track.dependencies_provided() & self.needed_binaries): |
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593 # FIXME: this basically assumes that all tracks use the same |
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594 # builder. This is true for now, but it is possible to |
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595 # configure treepkg with different builders for different |
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596 # tracks and we really should be installing the newly built |
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597 # binaries into the builder of the tracks which depends on |
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598 # them |
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599 binaries = packager.list_binary_files() |
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600 track.builder.add_binaries_to_extra_pkg(binaries) |
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601 return True |
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602 return False |
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603 |
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604 |
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605 def get_package_tracks(self): |
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606 return self.package_tracks |
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607 |
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608 def read_instruction(self): |
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609 if not self.instructions_file: |
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610 return "" |
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611 try: |
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612 f = open(self.instructions_file) |
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613 except (IOError, OSError): |
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614 return "" |
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615 try: |
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616 return f.read().strip() |
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617 finally: |
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618 f.close() |
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619 self.clear_instruction() |
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620 |
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621 def clear_instruction(self, force=False): |
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622 if self.instructions_file and (not self.instructions_file_removed |
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623 or force): |
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624 util.writefile(self.instructions_file, "") |
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625 self.instructions_file_removed = True |
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626 |
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627 def should_stop(self): |
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628 return self.read_instruction() == "stop" |