def GetPrefix(self, prefix):
"""Yields all databases which could contain records begining with prefix."""
components = common.Components(prefix)
components = [common.ConvertStringToFilename(x) for x in components]
path_prefix = utils.JoinPath(*components)
if path_prefix == "/":
path_prefix = ""
for regex in self.path_regexes:
result = common.EvaluatePrefix(path_prefix, regex)
if result == "MATCH":
yield self.Get(prefix)
return
if result == "POSSIBLE":
for data_server in self.AllDatabases():
yield data_server
return
yield self.Get(prefix)
def GetPrefix(self, subject_prefix):
"""Return list of databases matching subject_prefix."""
components = common.Components(subject_prefix)
components = [common.ConvertStringToFilename(x) for x in components]
path_prefix = utils.JoinPath(*components)
if path_prefix == "/":
path_prefix = ""
for regex in self.path_regexes:
result = common.EvaluatePrefix(path_prefix, regex)
if result == "MATCH":
yield self.Get(subject_prefix)
return
if result == "POSSIBLE":
for conn in self.DatabasesByPath(path_prefix):
yield conn
return
yield self.Get(subject_prefix)
def _GetTransactionDirectory(database_dir, rebalance_id):
dirname = common.ConvertStringToFilename(rebalance_id)
tempdir = utils.JoinPath(database_dir, constants.REBALANCE_DIRECTORY,
dirname)
return tempdir
