119 lines
4.0 KiB
Python
119 lines
4.0 KiB
Python
# Copyright (c) 2018 Red Hat, Inc.
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#
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# This file is part of ARA: Ansible Run Analysis.
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#
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# ARA is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# ARA is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with ARA. If not, see <http://www.gnu.org/licenses/>.
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# This is an "offline" API client that does not require standing up
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# an API server and does not execute actual HTTP calls.
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import logging
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import os
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import threading
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from django.core.handlers.wsgi import WSGIHandler
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from django.core.servers.basehttp import ServerHandler as BaseServerHandler, ThreadedWSGIServer, WSGIRequestHandler
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from .http import AraHttpClient
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class AraOfflineClient(AraHttpClient):
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def __init__(self):
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self.log = logging.getLogger(__name__)
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try:
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from django import setup as django_setup
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from django.core.management import execute_from_command_line
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os.environ.setdefault("DJANGO_SETTINGS_MODULE", "ara.server.settings")
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# Automatically create the database and run migrations (is there a better way?)
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execute_from_command_line(["django", "migrate"])
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# Set up the things Django needs
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django_setup()
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self._start_server()
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super().__init__(endpoint="http://localhost:%d" % self.server_thread.port)
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except ImportError:
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self.log.error("The offline client requires ara-server to be installed")
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raise
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def _start_server(self):
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self.server_thread = ServerThread("localhost")
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self.server_thread.start()
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# Wait for the live server to be ready
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self.server_thread.is_ready.wait()
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if self.server_thread.error:
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raise self.server_thread.error
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class ServerHandler(BaseServerHandler):
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def cleanup_headers(self):
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super().cleanup_headers()
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self.headers["Connection"] = "close"
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class QuietWSGIRequestHandler(WSGIRequestHandler):
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def log_message(*args):
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pass
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def handle(self):
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"""Copy of WSGIRequestHandler.handle() but with different ServerHandler"""
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self.raw_requestline = self.rfile.readline(65537)
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if len(self.raw_requestline) > 65536:
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self.requestline = ""
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self.request_version = ""
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self.command = ""
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self.send_error(414)
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return
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if not self.parse_request(): # An error code has been sent, just exit
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return
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handler = ServerHandler(self.rfile, self.wfile, self.get_stderr(), self.get_environ())
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handler.request_handler = self # backpointer for logging
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handler.run(self.server.get_app())
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class ServerThread(threading.Thread):
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def __init__(self, host, port=0):
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self.host = host
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self.port = port
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self.is_ready = threading.Event()
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self.error = None
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super().__init__(daemon=True)
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def run(self):
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"""
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Set up the live server and databases, and then loop over handling
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HTTP requests.
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"""
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try:
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# Create the handler for serving static and media files
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self.httpd = self._create_server()
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# If binding to port zero, assign the port allocated by the OS.
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if self.port == 0:
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self.port = self.httpd.server_address[1]
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self.httpd.set_app(WSGIHandler())
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self.is_ready.set()
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self.httpd.serve_forever()
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except Exception as e:
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self.error = e
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self.is_ready.set()
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def _create_server(self):
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return ThreadedWSGIServer((self.host, self.port), QuietWSGIRequestHandler, allow_reuse_address=False)
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