116 lines
3.4 KiB
Python
116 lines
3.4 KiB
Python
#
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# Copyright (c) 2022 Wind River Systems, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import logging
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import os
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from stx import stx_configparser
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from stx import utils
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logger = logging.getLogger('STX-Config')
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utils.set_logger(logger)
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def require_env(var):
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value = os.getenv(var)
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if value is None:
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logger.error(
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f'{var} not found in the environment')
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logger.error(
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'Please source the file \'import-stx\' to define the ' +
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f'{var} variable and execute \'stx-init-env\' to start builder pods')
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raise LookupError(f'{var} not found in the environment!')
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return value
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class Config:
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"""Configuration interface.
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This class provides a read-only interface to project
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configuration.
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Usage
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=====
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::
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from stx import config
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# load once
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config = Config().load()
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# use this instance throughout the app
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value = config.get ('section', 'key')
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# returns "minikube -p $PROFILE kubectl -n $NAMESPACE --"
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# or similar
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# kubectl_command = config.kubectl()
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"""
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def __init__(self):
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"""Construct an empty instance; must call "load" explicitly before using"""
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self.prjdir = require_env('PRJDIR')
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self.config_filename = os.path.join(self.prjdir, 'stx.conf')
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self.use_minikube = os.getenv('STX_PLATFORM', 'minikube') == 'minikube'
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if self.use_minikube:
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self.minikube_profile = require_env('MINIKUBENAME')
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else:
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self.k8s_namespace = os.getenv('STX_K8S_NAMESPACE')
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self.build_home = require_env('STX_BUILD_HOME')
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self.docker_tag = require_env('DOCKER_TAG_LOCAL')
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self.kubectl_cmd = None
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self.helm_cmd = None
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def load(self):
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"""Load stx.conf"""
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self.data = stx_configparser.STXConfigParser(self.config_filename)
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self._init_kubectl_cmd()
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return self
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def get(self, section, key):
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"""Get a config value"""
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assert self.data
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return self.data.getConfig(section, key)
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def impl(self):
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"""Internal object that stores configuration"""
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return self.data
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def prjdir(self):
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"""Path of starlingx/tools checkout"""
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return self.prjdir
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def kubectl(self):
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"""Returns the command for invoking kubect"""
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assert self.data
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return self.kubectl_cmd
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def helm(self):
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"""Returns the command for invoking helm"""
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assert self.data
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return self.helm_cmd
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def _init_kubectl_cmd(self):
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# helm
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self.helm_cmd = 'helm'
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# kubectl
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if self.use_minikube:
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self.kubectl_cmd = f'minikube -p {self.minikube_profile} kubectl --'
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else:
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self.kubectl_cmd = 'kubectl'
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# Kubernetes namespace
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if self.k8s_namespace:
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self.kubectl_cmd += f' -n {self.k8s_namespace}'
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self.helm_cmd += f' -n {self.k8s_namespace}'
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