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# coding: utf-8
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import os
import sys
import json
import warnings
from werkzeug.wrappers import Request
from werkzeug.wrappers import Response
from werkzeug.serving import run_simple
import leancloud
from . import utils
from . import leanengine
from .authorization import AuthorizationMiddleware
from .cookie_session import CookieSessionMiddleware # noqa: F401
from .cors import CORSMiddleware
from .https_redirect_middleware import HttpsRedirectMiddleware # noqa: F401
from .leanengine import LeanEngineApplication
from .leanengine import LeanEngineError
from .leanengine import after_delete
from .leanengine import after_save
from .leanengine import after_update
from .leanengine import before_delete
from .leanengine import before_save
from .leanengine import before_update
from .leanengine import context
from .leanengine import current
from .leanengine import register_cloud_func
from .leanengine import register_on_bigquery
from .leanengine import register_on_login
from .leanengine import register_on_auth_data
from .leanengine import register_on_verified
from .leanengine import user
__author__ = "asaka <lan@leancloud.rocks>"
class Engine(object):
"""
LeanEngine middleware.
"""
def __init__(self, wsgi_app=None, fetch_user=True):
"""
LeanEngine middleware constructor.
:param wsgi_app: wsgi callable
:param fetch_user:
should fetch user's data from server while prNoneocessing session token.
:type fetch_user: bool
"""
self.current = current
if wsgi_app:
leanengine.root_engine = self
self.origin_app = wsgi_app
self.app = LeanEngineApplication(fetch_user=fetch_user)
self.cloud_app = context.local_manager.make_middleware(
CORSMiddleware(AuthorizationMiddleware(self.app))
)
def __call__(self, environ, start_response):
request = Request(environ)
environ[
"leanengine.request"
] = request # cache werkzeug request for other middlewares
if request.path in ("/__engine/1/ping", "/__engine/1.1/ping/"):
start_response(
utils.to_native("200 OK"),
[
(
utils.to_native("Content-Type"),
utils.to_native("application/json"),
)
],
)
version = sys.version_info
return Response(
json.dumps(
{
"version": leancloud.__version__,
"runtime": "cpython-{0}.{1}.{2}".format(
version.major, version.minor, version.micro
),
}
)
)(environ, start_response)
if request.path.startswith("/__engine/"):
return self.cloud_app(environ, start_response)
if request.path.startswith("/1/functions") or request.path.startswith(
"/1.1/functions"
):
return self.cloud_app(environ, start_response)
if request.path.startswith("/1/call") or request.path.startswith("/1.1/call"):
return self.cloud_app(environ, start_response)
return self.origin_app(environ, start_response)
def wrap(self, wsgi_app):
if leanengine.root_engine:
raise RuntimeError("It's forbidden that overwriting wsgi_func.")
leanengine.root_engine = self
self.origin_app = wsgi_app
return self
def register(self, engine):
if not isinstance(engine, Engine):
raise TypeError("Please specify an Engine instance")
self.app.update_cloud_codes(engine.app.cloud_codes)
def define(self, *args, **kwargs):
return register_cloud_func(self.app.cloud_codes, *args, **kwargs)
def on_verified(self, *args, **kwargs):
return register_on_verified(self.app.cloud_codes, *args, **kwargs)
def on_login(self, *args, **kwargs):
return register_on_login(self.app.cloud_codes, *args, **kwargs)
def on_auth_data(self, *args, **kwargs):
return register_on_auth_data(self.app.cloud_codes, *args, **kwargs)
def on_bigquery(self, *args, **kwargs):
warnings.warn(
"on_bigquery is deprecated, please use on_insight instead",
leancloud.LeanCloudWarning,
)
return register_on_bigquery(self.app.cloud_codes, *args, **kwargs)
def before_save(self, *args, **kwargs):
return before_save(self.app.cloud_codes, *args, **kwargs)
def after_save(self, *args, **kwargs):
return after_save(self.app.cloud_codes, *args, **kwargs)
def before_update(self, *args, **kwargs):
return before_update(self.app.cloud_codes, *args, **kwargs)
def after_update(self, *args, **kwargs):
return after_update(self.app.cloud_codes, *args, **kwargs)
def before_delete(self, *args, **kwargs):
return before_delete(self.app.cloud_codes, *args, **kwargs)
def after_delete(self, *args, **kwargs):
return after_delete(self.app.cloud_codes, *args, **kwargs)
def on_insight(self, *args, **kwargs):
return register_on_bigquery(self.app.cloud_codes, *args, **kwargs)
def run(self, *args, **kwargs):
return run_simple(*args, **kwargs)
def start(self):
from gevent.pywsgi import WSGIServer
if not hasattr(leancloud, "APP_ID"):
APP_ID = os.environ["LEANCLOUD_APP_ID"]
APP_KEY = os.environ["LEANCLOUD_APP_KEY"]
MASTER_KEY = os.environ["LEANCLOUD_APP_MASTER_KEY"]
HOOK_KEY = os.environ["LEANCLOUD_APP_HOOK_KEY"]
PORT = int(os.environ.get("LEANCLOUD_APP_PORT"))
leancloud.init(
APP_ID, app_key=APP_KEY, master_key=MASTER_KEY, hook_key=HOOK_KEY
)
def application(environ, start_response):
start_response(
"200 OK".encode("utf-8"),
[("Content-Type".encode("utf-8"), "text/plain".encode("utf-8"))],
)
return "This is a LeanEngine application."
class NopLogger(object):
def write(self, s):
pass
app = self.wrap(application)
self.server = WSGIServer(("", PORT), app, log=NopLogger())
print("LeanEngine Cloud Functions app is running, port:", PORT)
self.server.serve_forever()
def stop(self):
self.server.stop()
__all__ = ["user", "Engine", "LeanEngineError"]