def __init__(self, filename):
self.filename = filename = filename.strip()
defaults = {
'here': os.path.dirname(os.path.abspath(filename)),
'__file__': os.path.abspath(filename)
}
self.parser = NicerConfigParser(filename, defaults=defaults)
self.parser.optionxform = str # Don't lower-case keys
with open(filename) as f:
self.parser.read_file(f)
def __init__(self, filename):
self.filename = filename = filename.strip()
defaults = {
'here': os.path.dirname(os.path.abspath(filename)),
'__file__': os.path.abspath(filename)
}
self.parser = NicerConfigParser(filename, defaults=defaults)
self.parser.optionxform = str # Don't lower-case keys
with open(filename) as f:
self.parser.read_file(f)
class ConfigLoader(_Loader):
def __init__(self, filename):
self.filename = filename = filename.strip()
defaults = {
'here': os.path.dirname(os.path.abspath(filename)),
'__file__': os.path.abspath(filename)
}
self.parser = NicerConfigParser(filename, defaults=defaults)
self.parser.optionxform = str # Don't lower-case keys
with open(filename) as f:
self.parser.read_file(f)
def update_defaults(self, new_defaults, overwrite=True):
for key, value in new_defaults.items():
if not overwrite and key in self.parser._defaults:
continue
self.parser._defaults[key] = value
def get_context(self, object_type, name=None, global_conf=None):
if self.absolute_name(name):
return loadcontext(object_type, name,
relative_to=os.path.dirname(self.filename),
global_conf=global_conf)
section = self.find_config_section(
object_type, name=name)
if global_conf is None:
global_conf = {}
else:
global_conf = global_conf.copy()
defaults = self.parser.defaults()
global_conf.update(defaults)
local_conf = {}
global_additions = {}
get_from_globals = {}
for option in self.parser.options(section):
if option.startswith('set '):
name = option[4:].strip()
global_additions[name] = global_conf[name] = (
self.parser.get(section, option))
elif option.startswith('get '):
name = option[4:].strip()
get_from_globals[name] = self.parser.get(section, option)
else:
if option in defaults:
# @@: It's a global option (?), so skip it
continue
local_conf[option] = self.parser.get(section, option)
for local_var, glob_var in get_from_globals.items():
local_conf[local_var] = global_conf[glob_var]
if object_type in (APP, FILTER) and 'filter-with' in local_conf:
filter_with = local_conf.pop('filter-with')
else:
filter_with = None
if 'require' in local_conf:
for spec in local_conf['require'].split():
pkg_resources.require(spec)
del local_conf['require']
if section.startswith('filter-app:'):
context = self._filter_app_context(
object_type, section, name=name,
global_conf=global_conf, local_conf=local_conf,
global_additions=global_additions)
elif section.startswith('pipeline:'):
context = self._pipeline_app_context(
object_type, section, name=name,
global_conf=global_conf, local_conf=local_conf,
global_additions=global_additions)
elif 'use' in local_conf:
context = self._context_from_use(
object_type, local_conf, global_conf, global_additions,
section)
else:
context = self._context_from_explicit(
object_type, local_conf, global_conf, global_additions,
section)
if filter_with is not None:
filter_with_context = LoaderContext(
obj=None,
object_type=FILTER_WITH,
protocol=None,
global_conf=global_conf, local_conf=local_conf,
loader=self)
filter_with_context.filter_context = self.filter_context(
name=filter_with, global_conf=global_conf)
filter_with_context.next_context = context
return filter_with_context
return context
def _context_from_use(self, object_type, local_conf, global_conf,
global_additions, section):
use = local_conf.pop('use')
context = self.get_context(
object_type, name=use, global_conf=global_conf)
context.global_conf.update(global_additions)
context.local_conf.update(local_conf)
if '__file__' in global_conf:
# use sections shouldn't overwrite the original __file__
context.global_conf['__file__'] = global_conf['__file__']
# @@: Should loader be overwritten?
context.loader = self
if context.protocol is None:
# Determine protocol from section type
section_protocol = section.split(':', 1)[0]
if section_protocol in ('application', 'app'):
context.protocol = 'paste.app_factory'
elif section_protocol in ('composit', 'composite'):
context.protocol = 'paste.composit_factory'
else:
# This will work with 'server' and 'filter', otherwise it
# could fail but there is an error message already for
# bad protocols
context.protocol = f'paste.{section_protocol}_factory'
return context
def _context_from_explicit(self, object_type, local_conf, global_conf,
global_addition, section):
possible = []
for protocol_options in object_type.egg_protocols:
for protocol in protocol_options:
if protocol in local_conf:
possible.append((protocol, local_conf[protocol]))
break
if len(possible) > 1:
raise LookupError(
f"Multiple protocols given in section {section!r}: {possible}")
if not possible:
raise LookupError(
f"No loader given in section {section!r}")
found_protocol, found_expr = possible[0]
del local_conf[found_protocol]
value = import_string(found_expr)
context = LoaderContext(
value, object_type, found_protocol,
global_conf, local_conf, self)
return context
def _filter_app_context(self, object_type, section, name,
global_conf, local_conf, global_additions):
if 'next' not in local_conf:
raise LookupError(
"The [%s] section in %s is missing a 'next' setting"
% (section, self.filename))
next_name = local_conf.pop('next')
context = LoaderContext(None, FILTER_APP, None, global_conf,
local_conf, self)
context.next_context = self.get_context(
APP, next_name, global_conf)
if 'use' in local_conf:
context.filter_context = self._context_from_use(
FILTER, local_conf, global_conf, global_additions,
section)
else:
context.filter_context = self._context_from_explicit(
FILTER, local_conf, global_conf, global_additions,
section)
return context
def _pipeline_app_context(self, object_type, section, name,
global_conf, local_conf, global_additions):
if 'pipeline' not in local_conf:
raise LookupError(
"The [%s] section in %s is missing a 'pipeline' setting"
% (section, self.filename))
pipeline = local_conf.pop('pipeline').split()
if local_conf:
raise LookupError(
"The [%s] pipeline section in %s has extra "
"(disallowed) settings: %s"
% (', '.join(local_conf.keys())))
context = LoaderContext(None, PIPELINE, None, global_conf,
local_conf, self)
context.app_context = self.get_context(
APP, pipeline[-1], global_conf)
context.filter_contexts = [
self.get_context(FILTER, pname, global_conf)
for pname in pipeline[:-1]]
return context
def find_config_section(self, object_type, name=None):
"""
Return the section name with the given name prefix (following the
same pattern as ``protocol_desc`` in ``config``. It must have the
given name, or for ``'main'`` an empty name is allowed. The
prefix must be followed by a ``:``.
Case is *not* ignored.
"""
possible = []
for name_options in object_type.config_prefixes:
for name_prefix in name_options:
found = self._find_sections(
self.parser.sections(), name_prefix, name)
if found:
possible.extend(found)
break
if not possible:
raise LookupError(
"No section %r (prefixed by %s) found in config %s"
% (name,
' or '.join(map(repr, _flatten(object_type.config_prefixes))),
self.filename))
if len(possible) > 1:
raise LookupError(
"Ambiguous section names %r for section %r (prefixed by %s) "
"found in config %s"
% (possible, name,
' or '.join(map(repr, _flatten(object_type.config_prefixes))),
self.filename))
return possible[0]
def _find_sections(self, sections, name_prefix, name):
found = []
if name is None:
if name_prefix in sections:
found.append(name_prefix)
name = 'main'
for section in sections:
if section.startswith(f"{name_prefix}:"):
if section[len(name_prefix) + 1:].strip() == name:
found.append(section)
return found
class ConfigLoader(_Loader):
def __init__(self, filename):
self.filename = filename = filename.strip()
defaults = {
'here': os.path.dirname(os.path.abspath(filename)),
'__file__': os.path.abspath(filename)
}
self.parser = NicerConfigParser(filename, defaults=defaults)
self.parser.optionxform = str # Don't lower-case keys
with open(filename) as f:
self.parser.read_file(f)
def update_defaults(self, new_defaults, overwrite=True):
for key, value in iteritems(new_defaults):
if not overwrite and key in self.parser._defaults:
continue
self.parser._defaults[key] = value
def get_context(self, object_type, name=None, global_conf=None):
if self.absolute_name(name):
return loadcontext(object_type, name,
relative_to=os.path.dirname(self.filename),
global_conf=global_conf)
section = self.find_config_section(
object_type, name=name)
if global_conf is None:
global_conf = {}
else:
global_conf = global_conf.copy()
defaults = self.parser.defaults()
global_conf.update(defaults)
local_conf = {}
global_additions = {}
get_from_globals = {}
for option in self.parser.options(section):
if option.startswith('set '):
name = option[4:].strip()
global_additions[name] = global_conf[name] = (
self.parser.get(section, option))
elif option.startswith('get '):
name = option[4:].strip()
get_from_globals[name] = self.parser.get(section, option)
else:
if option in defaults:
# @@: It's a global option (?), so skip it
continue
local_conf[option] = self.parser.get(section, option)
for local_var, glob_var in get_from_globals.items():
local_conf[local_var] = global_conf[glob_var]
if object_type in (APP, FILTER) and 'filter-with' in local_conf:
filter_with = local_conf.pop('filter-with')
else:
filter_with = None
if 'require' in local_conf:
for spec in local_conf['require'].split():
pkg_resources.require(spec)
del local_conf['require']
if section.startswith('filter-app:'):
context = self._filter_app_context(
object_type, section, name=name,
global_conf=global_conf, local_conf=local_conf,
global_additions=global_additions)
elif section.startswith('pipeline:'):
context = self._pipeline_app_context(
object_type, section, name=name,
global_conf=global_conf, local_conf=local_conf,
global_additions=global_additions)
elif 'use' in local_conf:
context = self._context_from_use(
object_type, local_conf, global_conf, global_additions,
section)
else:
context = self._context_from_explicit(
object_type, local_conf, global_conf, global_additions,
section)
if filter_with is not None:
filter_with_context = LoaderContext(
obj=None,
object_type=FILTER_WITH,
protocol=None,
global_conf=global_conf, local_conf=local_conf,
loader=self)
filter_with_context.filter_context = self.filter_context(
name=filter_with, global_conf=global_conf)
filter_with_context.next_context = context
return filter_with_context
return context
def _context_from_use(self, object_type, local_conf, global_conf,
global_additions, section):
use = local_conf.pop('use')
context = self.get_context(
object_type, name=use, global_conf=global_conf)
context.global_conf.update(global_additions)
context.local_conf.update(local_conf)
if '__file__' in global_conf:
# use sections shouldn't overwrite the original __file__
context.global_conf['__file__'] = global_conf['__file__']
# @@: Should loader be overwritten?
context.loader = self
if context.protocol is None:
# Determine protocol from section type
section_protocol = section.split(':', 1)[0]
if section_protocol in ('application', 'app'):
context.protocol = 'paste.app_factory'
elif section_protocol in ('composit', 'composite'):
context.protocol = 'paste.composit_factory'
else:
# This will work with 'server' and 'filter', otherwise it
# could fail but there is an error message already for
# bad protocols
context.protocol = 'paste.%s_factory' % section_protocol
return context
def _context_from_explicit(self, object_type, local_conf, global_conf,
global_addition, section):
possible = []
for protocol_options in object_type.egg_protocols:
for protocol in protocol_options:
if protocol in local_conf:
possible.append((protocol, local_conf[protocol]))
break
if len(possible) > 1:
raise LookupError(
"Multiple protocols given in section %r: %s"
% (section, possible))
if not possible:
raise LookupError(
"No loader given in section %r" % section)
found_protocol, found_expr = possible[0]
del local_conf[found_protocol]
value = import_string(found_expr)
context = LoaderContext(
value, object_type, found_protocol,
global_conf, local_conf, self)
return context
def _filter_app_context(self, object_type, section, name,
global_conf, local_conf, global_additions):
if 'next' not in local_conf:
raise LookupError(
"The [%s] section in %s is missing a 'next' setting"
% (section, self.filename))
next_name = local_conf.pop('next')
context = LoaderContext(None, FILTER_APP, None, global_conf,
local_conf, self)
context.next_context = self.get_context(
APP, next_name, global_conf)
if 'use' in local_conf:
context.filter_context = self._context_from_use(
FILTER, local_conf, global_conf, global_additions,
section)
else:
context.filter_context = self._context_from_explicit(
FILTER, local_conf, global_conf, global_additions,
section)
return context
def _pipeline_app_context(self, object_type, section, name,
global_conf, local_conf, global_additions):
if 'pipeline' not in local_conf:
raise LookupError(
"The [%s] section in %s is missing a 'pipeline' setting"
% (section, self.filename))
pipeline = local_conf.pop('pipeline').split()
if local_conf:
raise LookupError(
"The [%s] pipeline section in %s has extra "
"(disallowed) settings: %s"
% (', '.join(local_conf.keys())))
context = LoaderContext(None, PIPELINE, None, global_conf,
local_conf, self)
context.app_context = self.get_context(
APP, pipeline[-1], global_conf)
context.filter_contexts = [
self.get_context(FILTER, pname, global_conf)
for pname in pipeline[:-1]]
return context
def find_config_section(self, object_type, name=None):
"""
Return the section name with the given name prefix (following the
same pattern as ``protocol_desc`` in ``config``. It must have the
given name, or for ``'main'`` an empty name is allowed. The
prefix must be followed by a ``:``.
Case is *not* ignored.
"""
possible = []
for name_options in object_type.config_prefixes:
for name_prefix in name_options:
found = self._find_sections(
self.parser.sections(), name_prefix, name)
if found:
possible.extend(found)
break
if not possible:
raise LookupError(
"No section %r (prefixed by %s) found in config %s"
% (name,
' or '.join(map(repr, _flatten(object_type.config_prefixes))),
self.filename))
if len(possible) > 1:
raise LookupError(
"Ambiguous section names %r for section %r (prefixed by %s) "
"found in config %s"
% (possible, name,
' or '.join(map(repr, _flatten(object_type.config_prefixes))),
self.filename))
return possible[0]
def _find_sections(self, sections, name_prefix, name):
found = []
if name is None:
if name_prefix in sections:
found.append(name_prefix)
name = 'main'
for section in sections:
if section.startswith(name_prefix + ':'):
if section[len(name_prefix) + 1:].strip() == name:
found.append(section)
return found
