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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License 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 json
from . import ROOT_DIR
from .resources import DIR as RESOURCES_DIR
def get_example_uri(*args):
return os.path.join(ROOT_DIR, 'examples', *args)
def get_resource_uri(*args):
return os.path.join(RESOURCES_DIR, *args)
def get_service_template_uri(*args):
return os.path.join(RESOURCES_DIR, 'service-templates', *args)
class FilesystemDataHolder(object):
def __init__(self, path, reset=False):
self._path = path
if reset or not os.path.exists(self._path) or open(self._path).read() == '':
self._dump({})
def _load(self):
with open(self._path) as f:
return json.load(f)
def _dump(self, value):
with open(self._path, 'w') as f:
return json.dump(value, f)
def __contains__(self, item):
return item in self._load()
def __setitem__(self, key, value):
dict_ = self._load()
dict_[key] = value
self._dump(dict_)
def __getitem__(self, item):
return self._load()[item]
def __iter__(self):
return iter(self._load())
def get(self, item, default=None):
return self._load().get(item, default)
def setdefault(self, key, value):
dict_ = self._load()
return_value = dict_.setdefault(key, value)
self._dump(dict_)
return return_value
def update(self, dict_=None, **kwargs):
current_dict = self._load()
if dict_:
current_dict.update(dict_)
current_dict.update(**kwargs)
self._dump(current_dict)
@property
def path(self):
return self._path
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