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# Copyright (c) 2018 Cisco and/or its affiliates.
# Licensed 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.
"""Environment
Setting of the environment according to the specification specified in the
specification YAML file.
"""
import os
import shutil
import logging
from pal_errors import PresentationError
class Environment:
"""Setting of the environment:
- set environment variables,
- create directories.
"""
def __init__(self, env, force=False):
"""Initialization.
:param env: Environment specification.
:param force: If True, remove old build(s) if present.
:type env: dict
:type force: bool
"""
self._env = env
self._force = force
@property
def environment(self):
"""Getter.
:returns: Environment settings.
:rtype: dict
"""
return self._env
def _make_dirs(self):
"""Create the directories specified in the 'make-dirs' part of
'environment' section in the specification file.
:raises: PresentationError if it is not possible to remove or create a
directory.
"""
if self._force:
logging.info(u"Removing old build(s) ...")
for directory in self._env[u"build-dirs"]:
dir_to_remove = self._env[u"paths"][directory]
if os.path.isdir(dir_to_remove):
try:
shutil.rmtree(dir_to_remove)
logging.info(f" Removed: {dir_to_remove}")
except OSError:
raise PresentationError(
f"Cannot remove the directory {dir_to_remove}"
)
logging.info(u"Done.")
logging.info(u"Making directories ...")
for directory in self._env[u"make-dirs"]:
dir_to_make = self._env[u"paths"][directory]
try:
if os.path.isdir(dir_to_make):
logging.warning(
f"The directory {dir_to_make} exists, skipping."
)
else:
os.makedirs(dir_to_make)
logging.info(f" Created: {dir_to_make}")
except OSError:
raise PresentationError(
f"Cannot make the directory {dir_to_make}"
)
logging.info(u"Done.")
def set_environment(self):
"""Set the environment.
"""
self._make_dirs()
def clean_environment(env):
"""Clean the environment.
:param env: Environment specification.
:type env: dict
"""
logging.info(u"Cleaning the environment ...")
if not env[u"remove-dirs"]: # None or empty
logging.info(u" No directories to remove.")
return
for directory in env[u"remove-dirs"]:
dir_to_remove = env[u"paths"][directory]
logging.info(f" Removing the working directory {dir_to_remove} ...")
if os.path.isdir(dir_to_remove):
try:
shutil.rmtree(dir_to_remove)
except OSError as err:
logging.warning(
f"Cannot remove the directory {dir_to_remove}"
)
logging.debug(str(err))
else:
logging.warning(f"The directory {dir_to_remove} does not exist.")
logging.info(u"Done.")
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