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 # Called during do_package to write out metadata about this package
   9 # for comparision when writing future packages
  10 #
  11 python emit_pkghistory() {
  12         packages = bb.data.getVar('PACKAGES', d, True)
  13         pkghistdir = bb.data.getVar('PKGHIST_DIR', d, True)
  14
  15
  16         # Should check PACKAGES here to see if anything removed
  17
  18         def getpkgvar(pkg, var):
  19                 val = bb.data.getVar('%s_%s' % (var, pkg), d, 1)
  20                 if val:
  21                         return val
  22                 val = bb.data.getVar('%s' % (var), d, 1)
  23
  24                 return val
  25
  26         def getlastversion(pkg):
  27                 try:
  28                         pe = os.path.basename(os.readlink(os.path.join(pkghistdir, pkg, "latest")))
  29                         pv = os.path.basename(os.readlink(os.path.join(pkghistdir, pkg, pe, "latest")))
  30                         pr = os.path.basename(os.readlink(os.path.join(pkghistdir, pkg, pe, pv, "latest")))
  31                         return (pe, pv, pr)
  32                 except OSError:
  33                         return (None, None, None)
  34
  35         for pkg in packages.split():
  36                 pe = getpkgvar(pkg, 'PE') or "0"
  37                 pv = getpkgvar(pkg, 'PV')
  38                 pr = getpkgvar(pkg, 'PR')
  39                 destdir = os.path.join(pkghistdir, pkg, pe, pv, pr)
  40
  41                 #
  42                 # Find out what the last version was
  43                 # Make sure the version did not decrease
  44                 #
  45                 lastversion = getlastversion(pkg)
  46                 (last_pe, last_pv, last_pr) = lastversion
  47
  48                 if last_pe is not None:
  49                         r = bb.utils.vercmp((pe, pv, pr), lastversion)
  50                         if r < 0:
  51                                 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))
  52
  53                 write_pkghistory(pkg, pe, pv, pr, d)
  54
  55                 if last_pe is not None:
  56                         check_pkghistory(pkg, pe, pv, pr, lastversion)
  57
  58                 write_latestlink(pkg, pe, pv, pr, d)
  59 }
  60
  61
  62 def check_pkghistory(pkg, pe, pv, pr, lastversion):
  63         import bb
  64
  65         (last_pe, last_pv, last_pr) = lastversion
  66
  67         bb.debug(2, "Checking package history")
  68         # RDEPENDS removed?
  69         # PKG changed?
  70         # Each file list of each package for file removals?
  71
  72
  73 def write_pkghistory(pkg, pe, pv, pr, d):
  74         import bb, os
  75         bb.debug(2, "Writing package history")
  76
  77         pkghistdir = bb.data.getVar('PKGHIST_DIR', d, True)
  78
  79         verpath = os.path.join(pkghistdir, pkg, pe, pv, pr)
  80         if not os.path.exists(verpath):
  81                 os.makedirs(verpath)
  82
  83 def write_latestlink(pkg, pe, pv, pr, d):
  84         import bb, os
  85
  86         pkghistdir = bb.data.getVar('PKGHIST_DIR', d, True)
  87
  88         def rm_link(path):
  89                 try:
  90                         os.unlink(path)
  91                 except OSError:
  92                         return
  93
  94         rm_link(os.path.join(pkghistdir, pkg, "latest"))
  95         rm_link(os.path.join(pkghistdir, pkg, pe, "latest"))
  96         rm_link(os.path.join(pkghistdir, pkg, pe, pv, "latest"))
  97
  98         os.symlink(os.path.join(pkghistdir, pkg, pe), os.path.join(pkghistdir, pkg, "latest"))
  99         os.symlink(os.path.join(pkghistdir, pkg, pe, pv), os.path.join(pkghistdir, pkg, pe, "latest"))
 100         os.symlink(os.path.join(pkghistdir, pkg, pe, pv, pr), os.path.join(pkghistdir, pkg, pe, pv, "latest"))
 101