tuning-box/tuning_box/nailgun.py

88 lines
2.6 KiB
Python

# 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.
from __future__ import absolute_import
import itertools
import threading
from nailgun.db import sqlalchemy as nailgun_sa
from nailgun import extensions
import web
import tuning_box
from tuning_box import app as tb_app
from tuning_box import db as tb_db
class App2WebPy(web.application):
def __init__(self):
web.application.__init__(self)
self.__name__ = self
self.app = None
self.lock = threading.Lock()
def create_app(self):
raise NotImplementedError
def get_app(self):
with self.lock:
if not self.app:
self.app = self.create_app()
return self.app
def handle(self):
written_data = []
def write(data):
assert start_response.called
written_data.append(data)
def start_response(status, headers, exc_info=None):
assert not start_response.called
assert not exc_info
start_response.called = True
web.ctx.status = status
web.ctx.headers.extend(headers)
return write
start_response.called = False
app = self.get_app()
environ = dict(web.ctx.environ)
environ["SCRIPT_NAME"] = environ["PATH_INFO"][:-len(web.ctx.path)]
environ["PATH_INFO"] = environ["REQUEST_URI"] = web.ctx.path
result = app(environ, start_response)
return itertools.chain(written_data, result)
class TB2WebPy(App2WebPy):
def create_app(self):
# Nailgun API already contains keystone middleware
app = tb_app.build_app(with_keystone=False)
tb_db.prefix_tables(tb_db, Extension.table_prefix())
app.config["PROPAGATE_EXCEPTIONS"] = True
app.config["SQLALCHEMY_DATABASE_URI"] = nailgun_sa.db_str
return app
class Extension(extensions.BaseExtension):
name = 'tuning_box'
version = tuning_box.__version__
description = 'Plug tuning_box endpoints into Nailgun itself'
urls = [{'uri': '/config', 'handler': TB2WebPy()}]
@classmethod
def alembic_migrations_path(cls):
return tuning_box.get_migrations_dir()