Add support to emerge --metadata for transfering cache from overlays that
authorZac Medico <zmedico@gentoo.org>
Thu, 30 Apr 2009 07:17:13 +0000 (07:17 -0000)
committerZac Medico <zmedico@gentoo.org>
Thu, 30 Apr 2009 07:17:13 +0000 (07:17 -0000)
have a metadata/cache directory. (trunk r13356)

svn path=/main/branches/2.1.6/; revision=13512

pym/_emerge/__init__.py

index f93a3086ccbda55974966b8c6ae057700ea0615b..03cef509ebf9ad75c27ce00794aaa4d10359cdd0 100644 (file)
@@ -49,6 +49,7 @@ portage.dep._dep_check_strict = True
 import portage.util
 import portage.locks
 import portage.exception
+from portage.cache.cache_errors import CacheError
 from portage.data import secpass
 from portage.elog.messages import eerror
 from portage.util import normalize_path as normpath
@@ -10054,6 +10055,24 @@ class JobStatusDisplay(object):
 
                xtermTitle(" ".join(plain_output.split()))
 
+class ProgressHandler(object):
+       def __init__(self):
+               self.curval = 0
+               self.maxval = 0
+               self._last_update = 0
+               self.min_latency = 0.2
+
+       def onProgress(self, maxval, curval):
+               self.maxval = maxval
+               self.curval = curval
+               cur_time = time.time()
+               if cur_time - self._last_update >= self.min_latency:
+                       self._last_update = cur_time
+                       self.display()
+
+       def display(self):
+               raise NotImplementedError(self)
+
 class Scheduler(PollScheduler):
 
        _opts_ignore_blockers = \
@@ -12567,7 +12586,8 @@ def show_mask_docs():
 def action_sync(settings, trees, mtimedb, myopts, myaction):
        xterm_titles = "notitles" not in settings.features
        emergelog(xterm_titles, " === sync")
-       myportdir = settings.get("PORTDIR", None)
+       portdb = trees[settings["ROOT"]]["porttree"].dbapi
+       myportdir = portdb.porttree_root
        out = portage.output.EOutput()
        if not myportdir:
                sys.stderr.write("!!! PORTDIR is undefined.  Is /etc/make.globals missing?\n")
@@ -13025,8 +13045,12 @@ def action_sync(settings, trees, mtimedb, myopts, myaction):
        root_config = trees[settings["ROOT"]]["root_config"]
        portdb = trees[settings["ROOT"]]["porttree"].dbapi
 
-       if os.path.exists(myportdir+"/metadata/cache") and updatecache_flg:
-               action_metadata(settings, portdb, myopts)
+       if updatecache_flg and \
+               os.path.exists(os.path.join(myportdir, 'metadata', 'cache')):
+
+               # Only update cache for myportdir since that's
+               # the only one that's been synced here.
+               action_metadata(settings, portdb, myopts, porttrees=[myportdir])
 
        if portage._global_updates(trees, mtimedb["updates"]):
                mtimedb.commit()
@@ -13194,8 +13218,10 @@ def git_sync_timestamps(settings, portdir):
 
        return os.EX_OK
 
-def action_metadata(settings, portdb, myopts):
-       portage.writemsg_stdout("\n>>> Updating Portage cache:      ")
+def action_metadata(settings, portdb, myopts, porttrees=None):
+       if porttrees is None:
+               porttrees = portdb.porttrees
+       portage.writemsg_stdout("\n>>> Updating Portage cache\n")
        old_umask = os.umask(0002)
        cachedir = os.path.normpath(settings.depcachedir)
        if cachedir in ["/",    "/bin", "/dev",  "/etc",  "/home",
@@ -13207,60 +13233,213 @@ def action_metadata(settings, portdb, myopts):
                        "!!! This is ALMOST CERTAINLY NOT what you want: '%s'" % cachedir
                sys.exit(73)
        if not os.path.exists(cachedir):
-               os.mkdir(cachedir)
-
-       ec = portage.eclass_cache.cache(portdb.porttree_root)
-       myportdir = os.path.realpath(settings["PORTDIR"])
-       cm = settings.load_best_module("portdbapi.metadbmodule")(
-               myportdir, "metadata/cache", portage.auxdbkeys[:], readonly=True)
-
-       from portage.cache import util
-
-       class percentage_noise_maker(util.quiet_mirroring):
-               def __init__(self, dbapi):
-                       self.dbapi = dbapi
-                       self.cp_all = dbapi.cp_all()
-                       l = len(self.cp_all)
-                       self.call_update_min = 100000000
-                       self.min_cp_all = l/100.0
-                       self.count = 1
-                       self.pstr = ''
-
-               def __iter__(self):
-                       for x in self.cp_all:
-                               self.count += 1
-                               if self.count > self.min_cp_all:
-                                       self.call_update_min = 0
-                                       self.count = 0
-                               for y in self.dbapi.cp_list(x):
-                                       yield y
-                       self.call_update_mine = 0
-
-               def update(self, *arg):
+               os.makedirs(cachedir)
+
+       auxdbkeys = [x for x in portage.auxdbkeys if not x.startswith("UNUSED_0")]
+       auxdbkeys = tuple(auxdbkeys)
+
+       class TreeData(object):
+               __slots__ = ('dest_db', 'eclass_db', 'path', 'src_db', 'valid_nodes')
+               def __init__(self, dest_db, eclass_db, path, src_db):
+                       self.dest_db = dest_db
+                       self.eclass_db = eclass_db
+                       self.path = path
+                       self.src_db = src_db
+                       self.valid_nodes = set()
+
+       porttrees_data = []
+       for path in porttrees:
+               src_db = portdb._pregen_auxdb.get(path)
+               if src_db is None and \
+                       os.path.isdir(os.path.join(path, 'metadata', 'cache')):
+                       src_db = portdb.metadbmodule(
+                               path, 'metadata/cache', auxdbkeys, readonly=True)
                        try:
-                               self.pstr = int(self.pstr) + 1
-                       except ValueError:
-                               self.pstr = 1
-                       sys.stdout.write("%s%i%%" % \
-                               ("\b" * (len(str(self.pstr))+1), self.pstr))
-                       sys.stdout.flush()
-                       self.call_update_min = 10000000
+                               src_db.ec = portdb._repo_info[path].eclass_db
+                       except AttributeError:
+                               pass
 
-               def finish(self, *arg):
-                       sys.stdout.write("\b\b\b\b100%\n")
-                       sys.stdout.flush()
+               if src_db is not None:
+                       porttrees_data.append(TreeData(portdb.auxdb[path],
+                               portdb._repo_info[path].eclass_db, path, src_db))
+
+       porttrees = [tree_data.path for tree_data in porttrees_data]
+
+       isatty = sys.stdout.isatty()
+       quiet = not isatty or '--quiet' in myopts
+       onProgress = None
+       if not quiet:
+               progressBar = portage.output.TermProgressBar()
+               progressHandler = ProgressHandler()
+               onProgress = progressHandler.onProgress
+               def display():
+                       progressBar.set(progressHandler.curval, progressHandler.maxval)
+               progressHandler.display = display
+               def sigwinch_handler(signum, frame):
+                       lines, progressBar.term_columns = \
+                               portage.output.get_term_size()
+               signal.signal(signal.SIGWINCH, sigwinch_handler)
+
+       # Temporarily override portdb.porttrees so portdb.cp_all()
+       # will only return the relevant subset.
+       portdb_porttrees = portdb.porttrees
+       portdb.porttrees = porttrees
+       try:
+               cp_all = portdb.cp_all()
+       finally:
+               portdb.porttrees = portdb_porttrees
+
+       curval = 0
+       maxval = len(cp_all)
+       if onProgress is not None:
+               onProgress(maxval, curval)
+
+       from portage.cache.util import quiet_mirroring
+       from portage import eapi_is_supported, \
+               _validate_cache_for_unsupported_eapis
+
+       # TODO: Display error messages, but do not interfere with the progress bar.
+       # Here's how:
+       #  1) erase the progress bar
+       #  2) show the error message
+       #  3) redraw the progress bar on a new line
+       noise = quiet_mirroring()
+
+       for cp in cp_all:
+               for tree_data in porttrees_data:
+                       for cpv in portdb.cp_list(cp, mytree=tree_data.path):
+                               tree_data.valid_nodes.add(cpv)
+                               try:
+                                       src = tree_data.src_db[cpv]
+                               except KeyError, e:
+                                       noise.missing_entry(cpv)
+                                       del e
+                                       continue
+                               except CacheError, ce:
+                                       noise.exception(cpv, ce)
+                                       del ce
+                                       continue
 
-       if "--quiet" in myopts:
-               def quicky_cpv_generator(cp_all_list):
-                       for x in cp_all_list:
-                               for y in portdb.cp_list(x):
-                                       yield y
-               source = quicky_cpv_generator(portdb.cp_all())
-               noise_maker = portage.cache.util.quiet_mirroring()
-       else:
-               noise_maker = source = percentage_noise_maker(portdb)
-       portage.cache.util.mirror_cache(source, cm, portdb.auxdb[myportdir],
-               eclass_cache=ec, verbose_instance=noise_maker)
+                               eapi = src.get('EAPI')
+                               if not eapi:
+                                       eapi = '0'
+                               eapi = eapi.lstrip('-')
+                               eapi_supported = eapi_is_supported(eapi)
+                               if not eapi_supported:
+                                       if not _validate_cache_for_unsupported_eapis:
+                                               noise.misc(cpv, "unable to validate " + \
+                                                       "cache for EAPI='%s'" % eapi)
+                                               continue
+
+                               dest = None
+                               try:
+                                       dest = tree_data.dest_db[cpv]
+                               except (KeyError, CacheError):
+                                       pass
+
+                               for d in (src, dest):
+                                       if d is not None and d.get('EAPI') in ('', '0'):
+                                               del d['EAPI']
+
+                               if dest is not None:
+                                       if not (dest['_mtime_'] == src['_mtime_'] and \
+                                               tree_data.eclass_db.is_eclass_data_valid(
+                                                       dest['_eclasses_']) and \
+                                               set(dest['_eclasses_']) == set(src['_eclasses_'])):
+                                               dest = None
+                                       else:
+                                               # We don't want to skip the write unless we're really
+                                               # sure that the existing cache is identical, so don't
+                                               # trust _mtime_ and _eclasses_ alone.
+                                               for k in set(chain(src, dest)).difference(
+                                                       ('_mtime_', '_eclasses_')):
+                                                       if dest.get(k, '') != src.get(k, ''):
+                                                               dest = None
+                                                               break
+
+                               if dest is not None:
+                                       # The existing data is valid and identical,
+                                       # so there's no need to overwrite it.
+                                       continue
+
+                               try:
+                                       inherited = src.get('INHERITED', '')
+                                       eclasses = src.get('_eclasses_')
+                               except CacheError, ce:
+                                       noise.exception(cpv, ce)
+                                       del ce
+                                       continue
+
+                               if eclasses is not None:
+                                       if not tree_data.eclass_db.is_eclass_data_valid(
+                                               src['_eclasses_']):
+                                               noise.eclass_stale(cpv)
+                                               continue
+                                       inherited = eclasses
+                               else:
+                                       inherited = inherited.split()
+
+                               if inherited:
+                                       if tree_data.src_db.complete_eclass_entries and \
+                                               eclasses is None:
+                                               noise.corruption(cpv, "missing _eclasses_ field")
+                                               continue
+
+                                       # Even if _eclasses_ already exists, replace it with data from
+                                       # eclass_cache, in order to insert local eclass paths.
+                                       try:
+                                               eclasses = tree_data.eclass_db.get_eclass_data(inherited)
+                                       except KeyError:
+                                               # INHERITED contains a non-existent eclass.
+                                               noise.eclass_stale(cpv)
+                                               continue
+
+                                       if eclasses is None:
+                                               noise.eclass_stale(cpv)
+                                               continue
+                                       src['_eclasses_'] = eclasses
+
+                               if not eapi_supported:
+                                       src = {
+                                               'EAPI'       : '-' + eapi,
+                                               '_mtime_'    : src['_mtime_'],
+                                               '_eclasses_' : src['_eclasses_'],
+                                       }
+
+                               try:
+                                       tree_data.dest_db[cpv] = src
+                               except CacheError, ce:
+                                       noise.exception(cpv, ce)
+                                       del ce
+
+               curval += 1
+               if onProgress is not None:
+                       onProgress(maxval, curval)
+
+       if onProgress is not None:
+               onProgress(maxval, curval)
+
+       for tree_data in porttrees_data:
+               try:
+                       dead_nodes = set(tree_data.dest_db.iterkeys())
+               except CacheError, e:
+                       writemsg_level("Error listing cache entries for " + \
+                               "'%s': %s, continuing...\n" % (tree_data.path, e),
+                               level=logging.ERROR, noiselevel=-1)
+                       del e
+               else:
+                       dead_nodes.difference_update(tree_data.valid_nodes)
+                       for cpv in dead_nodes:
+                               try:
+                                       tree_data.dest_db[cpv]
+                               except (KeyError, CacheError):
+                                       pass
+
+       if not quiet:
+               # make sure the final progress is displayed
+               progressHandler.display()
+               print
+               signal.signal(signal.SIGWINCH, signal.SIG_DFL)
 
        sys.stdout.flush()
        os.umask(old_umask)