128 lines
3.5 KiB
Python
128 lines
3.5 KiB
Python
# Copyright 2017 Catalyst IT Limited
|
|
#
|
|
# 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 importlib
|
|
import json
|
|
import logging
|
|
import sys
|
|
import time
|
|
import traceback
|
|
import zipfile
|
|
|
|
from flask import abort
|
|
from flask import Flask
|
|
from flask import request
|
|
from flask import Response
|
|
from keystoneauth1.identity import generic
|
|
from keystoneauth1 import session
|
|
import requests
|
|
|
|
app = Flask(__name__)
|
|
zip_file = ''
|
|
function_module = 'main'
|
|
function_method = 'main'
|
|
openstack_session = None
|
|
|
|
|
|
@app.route('/download', methods=['POST'])
|
|
def download():
|
|
params = request.get_json() or {}
|
|
download_url = params.get('download_url')
|
|
function_id = params.get('function_id')
|
|
entry = params.get('entry')
|
|
token = params.get('token')
|
|
auth_url = params.get('auth_url')
|
|
|
|
headers = {}
|
|
if token:
|
|
headers = {'X-Auth-Token': token}
|
|
|
|
# Get openstack session.
|
|
global openstack_session
|
|
auth = generic.Token(auth_url=auth_url, token=token)
|
|
openstack_session = session.Session(auth=auth, verify=False)
|
|
|
|
global zip_file
|
|
zip_file = '%s.zip' % function_id
|
|
|
|
app.logger.info(
|
|
'Request received, download_url:%s, headers: %s, entry: %s' %
|
|
(download_url, headers, entry)
|
|
)
|
|
|
|
r = requests.get(download_url, headers=headers, stream=True)
|
|
with open(zip_file, 'wb') as fd:
|
|
for chunk in r.iter_content(chunk_size=65535):
|
|
fd.write(chunk)
|
|
|
|
if not zipfile.is_zipfile(zip_file):
|
|
abort(500)
|
|
app.logger.info('Code package downloaded to %s' % zip_file)
|
|
|
|
global function_module
|
|
global function_method
|
|
function_module, function_method = tuple(entry.rsplit('.', 1))
|
|
|
|
return 'success'
|
|
|
|
|
|
@app.route('/execute', methods=['POST'])
|
|
def execute():
|
|
global zip_file
|
|
global function_module
|
|
global function_method
|
|
global openstack_session
|
|
|
|
context = {'os_session': openstack_session}
|
|
input = request.get_json() or {}
|
|
app.logger.debug('Invoking function with input: %s' % input)
|
|
|
|
start = time.time()
|
|
try:
|
|
sys.path.insert(0, zip_file)
|
|
module = importlib.import_module(function_module)
|
|
func = getattr(module, function_method)
|
|
result = func(context=context, **input)
|
|
except Exception as e:
|
|
result = str(e)
|
|
|
|
# Print stacktrace
|
|
exc_type, exc_value, exc_traceback = sys.exc_info()
|
|
lines = traceback.format_exception(exc_type, exc_value, exc_traceback)
|
|
app.logger.debug(''.join(line for line in lines))
|
|
|
|
duration = time.time() - start
|
|
return Response(
|
|
response=json.dumps({'output': result, 'duration': duration}),
|
|
status=200,
|
|
mimetype='application/json'
|
|
)
|
|
|
|
|
|
def setup_logger(loglevel):
|
|
global app
|
|
root = logging.getLogger()
|
|
root.setLevel(loglevel)
|
|
ch = logging.StreamHandler(sys.stdout)
|
|
ch.setLevel(loglevel)
|
|
ch.setFormatter(
|
|
logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
|
|
)
|
|
app.logger.addHandler(ch)
|
|
|
|
|
|
setup_logger(logging.DEBUG)
|
|
app.logger.info("Starting server")
|
|
app.run(host='0.0.0.0', port='9090')
|