diff options
Diffstat (limited to 'ms/command-executor/src/main/python/command_executor_handler.py')
-rw-r--r-- | ms/command-executor/src/main/python/command_executor_handler.py | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/ms/command-executor/src/main/python/command_executor_handler.py b/ms/command-executor/src/main/python/command_executor_handler.py new file mode 100644 index 000000000..3027859b3 --- /dev/null +++ b/ms/command-executor/src/main/python/command_executor_handler.py @@ -0,0 +1,100 @@ +# +# Copyright (C) 2019 Bell Canada. +# +# 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. +# + +import os +import subprocess +import virtualenv +import venv +from builtins import Exception, open, dict +from subprocess import CalledProcessError, PIPE + +import utils + + +class CommandExecutorHandler: + + def __init__(self, request): + self.blueprint_id = utils.get_blueprint_id(request) + self.venv_home = '/opt/app/onap/blueprints/deploy/' + self.blueprint_id + + def prepare_env(self, request, results): + self.create_venv() + if not self.activate_venv(): + return False + + for package in request.packages: + if not self.install(package, results): + return False + + # deactivate_venv(blueprint_id) + return True + + def execute_command(self, request, results): + if not self.activate_venv(): + return False + + try: + results.append(os.popen(request.command).read()) + except Exception as e: + print("{} - Failed to execute command. Error: {}".format(self.blueprint_id, e)) + results.append(e) + return False + + # deactivate_venv(blueprint_id) + return True + + def install(self, package, results): + print("{} - Install package({}) in Python Virtual Environment".format(self.blueprint_id, package)) + command = ["pip", "install", package] + + env = dict(os.environ) + # env['https_proxy'] = "https://fastweb.int.bell.ca:8083" + + try: + results.append(subprocess.run(command, check=True, stdout=PIPE, stderr=PIPE, env=env).stdout.decode()) + return True + except CalledProcessError as e: + results.append(e.stderr.decode()) + return False + + def create_venv(self): + print("{} - Create Python Virtual Environment".format(self.blueprint_id)) + try: + bin_dir = self.venv_home + "/bin" + # venv doesn't populate the activate_this.py script, hence we use from virtualenv + venv.create(self.venv_home, with_pip=True, system_site_packages=True) + virtualenv.writefile(os.path.join(bin_dir, "activate_this.py"), virtualenv.ACTIVATE_THIS) + except Exception as err: + print("{} - Failed to provision Python Virtual Environment. Error: {}".format(self.blueprint_id, err)) + + def activate_venv(self): + print("{} - Activate Python Virtual Environment".format(self.blueprint_id)) + + path = "%s/bin/activate_this.py" % self.venv_home + try: + exec (open(path).read(), {'__file__': path}) + return True + except Exception as err: + print("{} - Failed to activate Python Virtual Environment. Error: {}".format(self.blueprint_id, err)) + return False + + def deactivate_venv(self): + print("{} - Deactivate Python Virtual Environment".format(self.blueprint_id)) + command = ["deactivate"] + try: + subprocess.run(command, check=True) + except Exception as err: + print("{} - Failed to deactivate Python Virtual Environment. Error: {}".format(self.blueprint_id, err)) |