def cacheIsUpToDate(self, flavor, cacheDir=None):
"""
return True if there is a cache file on disk with product information
for a given flavor which is newer than the information in the
product database. False is returned if the file does not exist
or otherwise appears out-of-date.
Note that this is different from cacheIsInSync()
"""
if not cacheDir:
cacheDir = self.dbpath
cache = self._persistPath(flavor, cacheDir)
if not os.path.exists(cache):
return False
# get the modification time of the cache file
cache_mtime = os.stat(cache).st_mtime
# check for user tag updates
if cacheDir != self.dbpath and \
Database(cacheDir).isNewerThan(cache_mtime):
return False
# this is slightly inaccurate: if data for any flavor in the database
# is newer than this time, this isNewerThan() returns True
return not Database(self.dbpath).isNewerThan(cache_mtime)
def _tryCache(self, dbpath, cacheDir, flavors, verbose=0):
if not cacheDir or not os.path.exists(cacheDir):
return False
cacheOkay = True
for flav in flavors:
if not self.cacheIsUpToDate(flav, cacheDir):
cacheOkay = False
if verbose > 1:
print >> sys.stderr, \
"Regenerating missing or out-of-date cache for %s in %s" % (flav, dbpath)
break
if cacheOkay:
self.reload(flavors, cacheDir, verbose=verbose)
# do a final consistency check; do we have the same products
dbnames = Database(dbpath).findProductNames()
dbnames.sort()
dbnames = " ".join(dbnames)
cachenames = self.getProductNames()
cachenames.sort()
cachenames = " ".join(cachenames)
if dbnames != cachenames:
cacheOkay = False
self.lookup = {} # forget loaded data
if verbose:
print >> sys.stderr, \
"Regenerating out-of-date cache for %s in %s" % (flav, dbpath)
return cacheOkay
def setUp(self):
self.dbpath = os.path.join(testEupsStack, "ups_db")
self.userdb = os.path.join(testEupsStack, "user_ups_db")
if not os.path.exists(self.userdb):
os.makedirs(self.userdb)
self.db = Database(self.dbpath, self.userdb)
self.pycur = os.path.join(self.dbpath, "python", "current.chain")
if os.path.isfile(self.pycur + ".bak"):
os.rename(self.pycur + ".bak", self.pycur)
def _loadUserTags(self, userTagDir=None):
if not userTagDir:
userTagDir = self.persistDir
if not userTagDir or not os.path.exists(userTagDir):
return
db = Database(self.dbpath, userTagDir)
prodnames = db.findProductNames()
for pname in prodnames:
for tag, version, flavor in db.getTagAssignments(pname,
glob=False):
self.assignTag(tag, pname, version, flavor)
def refreshFromDatabase(self, userTagDir=None):
"""
load product information directly from the database files on disk,
overwriting any previous information. If userTagDir is provided,
user tag assignments will be explicitly loaded into the stack
(otherwise, the stack may not have user tags in it).
"""
db = Database(self.dbpath, userTagDir)
# forget!
self.lookup = {}
for prodname in db.findProductNames():
for product in db.findProducts(prodname):
self.addProduct(product)
