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# Copyright (c) 2012-2013 Mitch Garnaat http://garnaat.org/
# Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
import os
import shlex
import copy
import sys
from botocore.compat import six
import botocore.exceptions
def multi_file_load_config(*filenames):
"""Load and combine multiple INI configs with profiles.
This function will take a list of filesnames and return
a single dictionary that represents the merging of the loaded
config files.
If any of the provided filenames does not exist, then that file
is ignored. It is therefore ok to provide a list of filenames,
some of which may not exist.
Configuration files are **not** deep merged, only the top level
keys are merged. The filenames should be passed in order of
precedence. The first config file has precedence over the
second config file, which has precedence over the third config file,
etc. The only exception to this is that the "profiles" key is
merged to combine profiles from multiple config files into a
single profiles mapping. However, if a profile is defined in
multiple config files, then the config file with the highest
precedence is used. Profile values themselves are not merged.
For example::
FileA FileB FileC
[foo] [foo] [bar]
a=1 a=2 a=3
b=2
[bar] [baz] [profile a]
a=2 a=3 region=e
[profile a] [profile b] [profile c]
region=c region=d region=f
The final result of ``multi_file_load_config(FileA, FileB, FileC)``
would be::
{"foo": {"a": 1}, "bar": {"a": 2}, "baz": {"a": 3},
"profiles": {"a": {"region": "c"}}, {"b": {"region": d"}},
{"c": {"region": "f"}}}
Note that the "foo" key comes from A, even though it's defined in both
FileA and FileB. Because "foo" was defined in FileA first, then the values
for "foo" from FileA are used and the values for "foo" from FileB are
ignored. Also note where the profiles originate from. Profile "a"
comes FileA, profile "b" comes from FileB, and profile "c" comes
from FileC.
"""
configs = []
profiles = []
for filename in filenames:
try:
loaded = load_config(filename)
except botocore.exceptions.ConfigNotFound:
continue
profiles.append(loaded.pop('profiles'))
configs.append(loaded)
merged_config = _merge_list_of_dicts(configs)
merged_profiles = _merge_list_of_dicts(profiles)
merged_config['profiles'] = merged_profiles
return merged_config
def _merge_list_of_dicts(list_of_dicts):
merged_dicts = {}
for single_dict in list_of_dicts:
for key, value in single_dict.items():
if key not in merged_dicts:
merged_dicts[key] = value
return merged_dicts
def load_config(config_filename):
"""Parse a INI config with profiles.
This will parse an INI config file and map top level profiles
into a top level "profile" key.
If you want to parse an INI file and map all section names to
top level keys, use ``raw_config_parse`` instead.
"""
parsed = raw_config_parse(config_filename)
return build_profile_map(parsed)
def raw_config_parse(config_filename, parse_subsections=True):
"""Returns the parsed INI config contents.
Each section name is a top level key.
:param config_filename: The name of the INI file to parse
:param parse_subsections: If True, parse indented blocks as
subsections that represent their own configuration dictionary.
For example, if the config file had the contents::
s3 =
signature_version = s3v4
addressing_style = path
The resulting ``raw_config_parse`` would be::
{'s3': {'signature_version': 's3v4', 'addressing_style': 'path'}}
If False, do not try to parse subsections and return the indented
block as its literal value::
{'s3': '\nsignature_version = s3v4\naddressing_style = path'}
:returns: A dict with keys for each profile found in the config
file and the value of each key being a dict containing name
value pairs found in that profile.
:raises: ConfigNotFound, ConfigParseError
"""
config = {}
path = config_filename
if path is not None:
path = os.path.expandvars(path)
path = os.path.expanduser(path)
if not os.path.isfile(path):
raise botocore.exceptions.ConfigNotFound(path=_unicode_path(path))
cp = six.moves.configparser.RawConfigParser()
try:
cp.read([path])
except six.moves.configparser.Error:
raise botocore.exceptions.ConfigParseError(
path=_unicode_path(path))
else:
for section in cp.sections():
config[section] = {}
for option in cp.options(section):
config_value = cp.get(section, option)
if parse_subsections and config_value.startswith('\n'):
# Then we need to parse the inner contents as
# hierarchical. We support a single level
# of nesting for now.
try:
config_value = _parse_nested(config_value)
except ValueError:
raise botocore.exceptions.ConfigParseError(
path=_unicode_path(path))
config[section][option] = config_value
return config
def _unicode_path(path):
if isinstance(path, six.text_type):
return path
# According to the documentation getfilesystemencoding can return None
# on unix in which case the default encoding is used instead.
filesystem_encoding = sys.getfilesystemencoding()
if filesystem_encoding is None:
filesystem_encoding = sys.getdefaultencoding()
return path.decode(filesystem_encoding, 'replace')
def _parse_nested(config_value):
# Given a value like this:
# \n
# foo = bar
# bar = baz
# We need to parse this into
# {'foo': 'bar', 'bar': 'baz}
parsed = {}
for line in config_value.splitlines():
line = line.strip()
if not line:
continue
# The caller will catch ValueError
# and raise an appropriate error
# if this fails.
key, value = line.split('=', 1)
parsed[key.strip()] = value.strip()
return parsed
def build_profile_map(parsed_ini_config):
"""Convert the parsed INI config into a profile map.
The config file format requires that every profile except the
default to be prepended with "profile", e.g.::
[profile test]
aws_... = foo
aws_... = bar
[profile bar]
aws_... = foo
aws_... = bar
# This is *not* a profile
[preview]
otherstuff = 1
# Neither is this
[foobar]
morestuff = 2
The build_profile_map will take a parsed INI config file where each top
level key represents a section name, and convert into a format where all
the profiles are under a single top level "profiles" key, and each key in
the sub dictionary is a profile name. For example, the above config file
would be converted from::
{"profile test": {"aws_...": "foo", "aws...": "bar"},
"profile bar": {"aws...": "foo", "aws...": "bar"},
"preview": {"otherstuff": ...},
"foobar": {"morestuff": ...},
}
into::
{"profiles": {"test": {"aws_...": "foo", "aws...": "bar"},
"bar": {"aws...": "foo", "aws...": "bar"},
"preview": {"otherstuff": ...},
"foobar": {"morestuff": ...},
}
If there are no profiles in the provided parsed INI contents, then
an empty dict will be the value associated with the ``profiles`` key.
.. note::
This will not mutate the passed in parsed_ini_config. Instead it will
make a deepcopy and return that value.
"""
parsed_config = copy.deepcopy(parsed_ini_config)
profiles = {}
final_config = {}
for key, values in parsed_config.items():
if key.startswith("profile"):
try:
parts = shlex.split(key)
except ValueError:
continue
if len(parts) == 2:
profiles[parts[1]] = values
elif key == 'default':
# default section is special and is considered a profile
# name but we don't require you use 'profile "default"'
# as a section.
profiles[key] = values
else:
final_config[key] = values
final_config['profiles'] = profiles
return final_config
| .. | |||||
| __pycache__ | |||||
| data | |||||
| docs | |||||
| __init__.py | |||||
| args.py | |||||
| auth.py | |||||
| awsrequest.py | |||||
| cacert.pem | |||||
| client.py | |||||
| compat.py | |||||
| config.py | |||||
| configloader.py | |||||
| configprovider.py | |||||
| credentials.py | |||||
| discovery.py | |||||
| endpoint.py | |||||
| errorfactory.py | |||||
| eventstream.py | |||||
| exceptions.py | |||||
| handlers.py | |||||
| history.py | |||||
| hooks.py | |||||
| httpsession.py | |||||
| loaders.py | |||||
| model.py | |||||
| monitoring.py | |||||
| paginate.py | |||||
| parsers.py | |||||
| regions.py | |||||
| response.py | |||||
| retryhandler.py | |||||
| serialize.py | |||||
| session.py | |||||
| signers.py | |||||
| stub.py | |||||
| translate.py | |||||
| utils.py | |||||
| validate.py | |||||
| waiter.py |