classes/packagehistory.bbclass

   1 # Must inherit package first before changing PACKAGEFUNCS
   2 inherit package
   3 PACKAGEFUNCS += "emit_pkghistory"
   4
   5 PKGHIST_DIR = "${TMPDIR}/pkghistory/${BASEPKG_TARGET_SYS}/"
   6
   7
   8 #
   9 # Called during do_package to write out metadata about this package
  10 # for comparision when writing future packages
  11 #
  12 python emit_pkghistory() {
  13         packages = bb.data.getVar('PACKAGES', d, True)
  14         pkghistdir = bb.data.getVar('PKGHIST_DIR', d, True)
  15
  16
  17         # Should check PACKAGES here to see if anything removed
  18
  19         def getpkgvar(pkg, var):
  20                 val = bb.data.getVar('%s_%s' % (var, pkg), d, 1)
  21                 if val:
  22                         return val
  23                 val = bb.data.getVar('%s' % (var), d, 1)
  24
  25                 return val
  26
  27         def getlastversion(pkg):
  28                 try:
  29                         pe = os.path.basename(os.readlink(os.path.join(pkghistdir, pkg, "latest")))
  30                         pv = os.path.basename(os.readlink(os.path.join(pkghistdir, pkg, pe, "latest")))
  31                         pr = os.path.basename(os.readlink(os.path.join(pkghistdir, pkg, pe, pv, "latest")))
  32                         return (pe, pv, pr)
  33                 except OSError:
  34                         return (None, None, None)
  35
  36         for pkg in packages.split():
  37                 pe = getpkgvar(pkg, 'PE') or "0"
  38                 pv = getpkgvar(pkg, 'PV')
  39                 pr = getpkgvar(pkg, 'PR')
  40                 destdir = os.path.join(pkghistdir, pkg, pe, pv, pr)
  41
  42                 #
  43                 # Find out what the last version was
  44                 # Make sure the version did not decrease
  45                 #
  46                 lastversion = getlastversion(pkg)
  47                 (last_pe, last_pv, last_pr) = lastversion
  48
  49                 if last_pe is not None:
  50                         r = bb.utils.vercmp((pe, pv, pr), lastversion)
  51                         if r < 0:
  52                                 bb.fatal("Package version for package %s went backwards which would break package feeds from (%s:%s-%s to %s:%s-%s)" % (pkg, last_pe, last_pv, last_pr, pe, pv, pr))
  53
  54                 write_pkghistory(pkg, pe, pv, pr, d)
  55
  56                 if last_pe is not None:
  57                         check_pkghistory(pkg, pe, pv, pr, lastversion)
  58
  59                 write_latestlink(pkg, pe, pv, pr, d)
  60 }
  61
  62
  63 def check_pkghistory(pkg, pe, pv, pr, lastversion):
  64         (last_pe, last_pv, last_pr) = lastversion
  65
  66         bb.debug(2, "Checking package history")
  67         # RDEPENDS removed?
  68         # PKG changed?
  69         # Each file list of each package for file removals?
  70
  71
  72 def write_pkghistory(pkg, pe, pv, pr, d):
  73         bb.debug(2, "Writing package history")
  74
  75         pkghistdir = bb.data.getVar('PKGHIST_DIR', d, True)
  76
  77         verpath = os.path.join(pkghistdir, pkg, pe, pv, pr)
  78         if not os.path.exists(verpath):
  79                 os.makedirs(verpath)
  80
  81 def write_latestlink(pkg, pe, pv, pr, d):
  82         pkghistdir = bb.data.getVar('PKGHIST_DIR', d, True)
  83
  84         def rm_link(path):
  85                 try:
  86                         os.unlink(path)
  87                 except OSError:
  88                         return
  89
  90         rm_link(os.path.join(pkghistdir, pkg, "latest"))
  91         rm_link(os.path.join(pkghistdir, pkg, pe, "latest"))
  92         rm_link(os.path.join(pkghistdir, pkg, pe, pv, "latest"))
  93
  94         os.symlink(os.path.join(pkghistdir, pkg, pe), os.path.join(pkghistdir, pkg, "latest"))
  95         os.symlink(os.path.join(pkghistdir, pkg, pe, pv), os.path.join(pkghistdir, pkg, pe, "latest"))
  96         os.symlink(os.path.join(pkghistdir, pkg, pe, pv, pr), os.path.join(pkghistdir, pkg, pe, pv, "latest"))
  97