def __new__(cls, arg, *args):
'''This is necessary because tuple is an immutable data type, so
inheritance rules are a bit funny.'''
# I have some idea I should be using super() here
if args:
return tuple.__new__(cls, arg)
else:
a = stringtosockaddr(arg)
return tuple.__new__(cls, a)
def __new__(cls, arg, *args):
'''This is necessary because tuple is an immutable data type, so
inheritance rules are a bit funny.'''
# I have some idea I should be using super() here
if args:
return tuple.__new__(cls, arg)
else:
a = stringtosockaddr(arg)
return tuple.__new__(cls, a)
def files(self):
'''Read self.FEATURED_FILE, and for each label (starting at column 0)
construct a dict of the (indented) addresses following it. Each dict
value starts off as None, to be initialised as the connections are
made.
self.featured_servers[label] is set to its corresponding dict.
A missing file is ignored but other errors - e.g. if the file is
present but can't be read - are fatal.'''
self.featured_servers = dict()
# FIXME: use ConfigError where appropriate
try:
with open(self.FEATURED_FILE) as featured:
errmsg = self.FEATURED_FILE + ':'
self.log(LOG_DEBUG, 'Opened', self.FEATURED_FILE)
label = ''
lineno = 0
for line in iter(l.rstrip() for l in featured):
lineno += 1
wheremsg = '{0}:{1}:'.format(self.FEATURED_FILE, lineno)
# ignore blank lines and comments
if not line or line.isspace() or \
line.lstrip().startswith('#'):
continue
# indented lines are server addresses
if line[0].isspace():
addr = line.lstrip()
if not label:
raise ConfigError(errmsg, 'Error: missing label')
try:
saddr = stringtosockaddr(addr)
except EnvironmentError as err:
# EnvironmentError covers socket.error and
# .gaierror without having to import them
raise ConfigError(wheremsg, "Error: couldn't "
'convert', addr,
'to address format:', err)
if saddr in self.featured_servers[label].keys():
self.log(LOG_PRINT, wheremsg, 'Warning:', saddr,
'appears multiple times')
self.featured_servers[label][saddr] = None
# unindented lines start a new label
else:
# clean up the old label
if label:
if not self.featured_servers[label]:
raise ConfigError(
wheremsg, 'Error: no '
'addresses defined for', label)
else:
# print a message of the form
# featured.txt: 'Label': [server1, server2,...]
self.log(LOG_VERBOSE,
self.FEATURED_FILE,
repr(label),
self.featured_servers[label].keys(),
sep=': ')
label = line
for c in label:
# slashes are field seperators in
# getserversExtResponse
if c in '\\/':
raise ConfigError(
wheremsg, 'Error:', 'label', repr(label),
'contains '
'invalid character:', c)
self.featured_servers[label] = dict()
if label:
# print a message of the form
# featured.txt: 'Label': [server1, server2, ...]
self.log(LOG_VERBOSE,
self.FEATURED_FILE,
repr(label),
self.featured_servers[label].keys(),
sep=': ')
except IOError as err:
if err.errno != ENOENT:
raise
def files(self):
'''Read self.FEATURED_FILE, and for each label (starting at column 0)
construct a dict of the (indented) addresses following it. Each dict
value starts off as None, to be initialised as the connections are
made.
self.featured_servers[label] is set to its corresponding dict.
A missing file is ignored but other errors - e.g. if the file is
present but can't be read - are fatal.'''
self.featured_servers = dict()
# FIXME: use ConfigError where appropriate
try:
with open(self.FEATURED_FILE) as featured:
errmsg = self.FEATURED_FILE + ':'
self.log(LOG_DEBUG, 'Opened', self.FEATURED_FILE)
label = ''
lineno = 0
for line in iter(l.rstrip() for l in featured):
lineno += 1
wheremsg = '{0}:{1}:'.format(self.FEATURED_FILE, lineno)
# ignore blank lines and comments
if not line or line.isspace() or \
line.lstrip().startswith('#'):
continue
# indented lines are server addresses
if line[0].isspace():
addr = line.lstrip()
if not label:
raise ConfigError(errmsg, 'Error: missing label')
try:
saddr = stringtosockaddr(addr)
except EnvironmentError as err:
# EnvironmentError covers socket.error and
# .gaierror without having to import them
raise ConfigError(wheremsg, "Error: couldn't "
'convert', addr,
'to address format:', err)
if saddr in self.featured_servers[label].keys():
self.log(LOG_PRINT, wheremsg, 'Warning:',
saddr, 'appears multiple times')
self.featured_servers[label][saddr] = None
# unindented lines start a new label
else:
# clean up the old label
if label:
if not self.featured_servers[label]:
raise ConfigError(wheremsg, 'Error: no '
'addresses defined for',
label)
else:
# print a message of the form
# featured.txt: 'Label': [server1, server2,...]
self.log(LOG_VERBOSE, self.FEATURED_FILE,
repr(label),
self.featured_servers[label].keys(),
sep = ': ')
label = line
for c in label:
# slashes are field seperators in
# getserversExtResponse
if c in '\\/':
raise ConfigError(wheremsg, 'Error:',
'label', repr(label), 'contains '
'invalid character:', c)
self.featured_servers[label] = dict()
if label:
# print a message of the form
# featured.txt: 'Label': [server1, server2, ...]
self.log(LOG_VERBOSE, self.FEATURED_FILE, repr(label),
self.featured_servers[label].keys(), sep = ': ')
except IOError as err:
if err.errno != ENOENT:
raise
