realms-wiki/realms/__init__.py
2015-07-22 12:01:59 -05:00

277 lines
8.8 KiB
Python

import sys
# Set default encoding to UTF-8
reload(sys)
# noinspection PyUnresolvedReferences
sys.setdefaultencoding('utf-8')
import time
import json
import httplib
import traceback
import click
from flask import Flask, request, render_template, url_for, redirect, g
from flask.ext.cache import Cache
from flask.ext.login import LoginManager, current_user
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.assets import Environment, Bundle
from werkzeug.routing import BaseConverter
from werkzeug.exceptions import HTTPException
from sqlalchemy.ext.declarative import declarative_base
from .modules.search.models import Search
from .lib.util import to_canonical, remove_ext, mkdir_safe, gravatar_url, to_dict
from .lib.hook import HookModelMeta, HookMixin
from .lib.util import is_su, in_virtualenv
from .version import __version__
class Application(Flask):
def __call__(self, environ, start_response):
path_info = environ.get('PATH_INFO')
if path_info and len(path_info) > 1 and path_info.endswith('/'):
environ['PATH_INFO'] = path_info[:-1]
scheme = environ.get('HTTP_X_SCHEME')
if scheme:
environ['wsgi.url_scheme'] = scheme
real_ip = environ.get('HTTP_X_REAL_IP')
if real_ip:
environ['REMOTE_ADDR'] = real_ip
return super(Application, self).__call__(environ, start_response)
def discover(self):
import_name = 'realms.modules'
fromlist = (
'assets',
'commands',
'models',
'views',
'hooks'
)
start_time = time.time()
__import__(import_name, fromlist=fromlist)
for module_name in self.config['MODULES']:
sources = __import__('%s.%s' % (import_name, module_name), fromlist=fromlist)
if hasattr(sources, 'init'):
sources.init(self)
# Blueprint
if hasattr(sources, 'views'):
self.register_blueprint(sources.views.blueprint, url_prefix=self.config['RELATIVE_PATH'])
# Click
if hasattr(sources, 'commands'):
cli.add_command(sources.commands.cli, name=module_name)
# Hooks
if hasattr(sources, 'hooks'):
if hasattr(sources.hooks, 'before_request'):
self.before_request(sources.hooks.before_request)
if hasattr(sources.hooks, 'before_first_request'):
self.before_first_request(sources.hooks.before_first_request)
# print >> sys.stderr, ' * Ready in %.2fms' % (1000.0 * (time.time() - start_time))
def make_response(self, rv):
if rv is None:
rv = '', httplib.NO_CONTENT
elif not isinstance(rv, tuple):
rv = rv,
rv = list(rv)
if isinstance(rv[0], (list, dict)):
rv[0] = self.response_class(json.dumps(rv[0]), mimetype='application/json')
return super(Application, self).make_response(tuple(rv))
class Assets(Environment):
default_filters = {'js': 'rjsmin', 'css': 'cleancss'}
default_output = {'js': 'assets/%(version)s.js', 'css': 'assets/%(version)s.css'}
def register(self, name, *args, **kwargs):
ext = args[0].split('.')[-1]
filters = kwargs.get('filters', self.default_filters[ext])
output = kwargs.get('output', self.default_output[ext])
return super(Assets, self).register(name, Bundle(*args, filters=filters, output=output))
class RegexConverter(BaseConverter):
""" Enables Regex matching on endpoints
"""
def __init__(self, url_map, *items):
super(RegexConverter, self).__init__(url_map)
self.regex = items[0]
def redirect_url(referrer=None):
if not referrer:
referrer = request.referrer
return request.args.get('next') or referrer or url_for('index')
def error_handler(e):
try:
if isinstance(e, HTTPException):
status_code = e.code
message = e.description if e.description != type(e).description else None
tb = None
else:
status_code = httplib.INTERNAL_SERVER_ERROR
message = None
tb = traceback.format_exc() if current_user.admin else None
if request.is_xhr or request.accept_mimetypes.best in ['application/json', 'text/javascript']:
response = {
'message': message,
'traceback': tb
}
else:
response = render_template('errors/error.html',
title=httplib.responses[status_code],
status_code=status_code,
message=message,
traceback=tb)
except HTTPException as e2:
return error_handler(e2)
return response, status_code
def create_app(config=None):
app = Application(__name__)
app.config.from_object('realms.config')
app.url_map.converters['regex'] = RegexConverter
app.url_map.strict_slashes = False
login_manager.init_app(app)
db.init_app(app)
cache.init_app(app)
assets.init_app(app)
search.init_app(app)
db.Model = declarative_base(metaclass=HookModelMeta, cls=HookMixin)
for status_code in httplib.responses:
if status_code >= 400:
app.register_error_handler(status_code, error_handler)
@app.before_request
def init_g():
g.assets = dict(css=['main.css'], js=['main.js'])
@app.template_filter('datetime')
def _jinja2_filter_datetime(ts):
return time.strftime('%b %d, %Y %I:%M %p', time.localtime(ts))
@app.errorhandler(404)
def page_not_found(e):
return render_template('errors/404.html'), 404
if app.config['RELATIVE_PATH']:
@app.route("/")
def root():
return redirect(url_for(app.config['ROOT_ENDPOINT']))
app.discover()
# This will be removed at some point
with app.app_context():
db.metadata.create_all(db.get_engine(app))
return app
# Init plugins here if possible
login_manager = LoginManager()
db = SQLAlchemy()
cache = Cache()
assets = Assets()
search = Search()
assets.register('main.js',
'vendor/jquery/dist/jquery.js',
'vendor/components-bootstrap/js/bootstrap.js',
'vendor/handlebars/handlebars.js',
'vendor/js-yaml/dist/js-yaml.js',
'vendor/marked/lib/marked.js',
'js/html-sanitizer-minified.js', # don't minify?
'vendor/highlightjs/highlight.pack.js',
'vendor/parsleyjs/dist/parsley.js',
'vendor/datatables/media/js/jquery.dataTables.js',
'vendor/datatables-plugins/integration/bootstrap/3/dataTables.bootstrap.js',
'js/hbs-helpers.js',
'js/mdr.js',
'js/main.js')
assets.register('main.css',
'vendor/bootswatch-dist/css/bootstrap.css',
'vendor/components-font-awesome/css/font-awesome.css',
'vendor/highlightjs/styles/github.css',
'vendor/datatables-plugins/integration/bootstrap/3/dataTables.bootstrap.css',
'css/style.css')
from functools import update_wrapper
def with_appcontext(f):
"""Wraps a callback so that it's guaranteed to be executed with the
script's application context. If callbacks are registered directly
to the ``app.cli`` object then they are wrapped with this function
by default unless it's disabled.
"""
@click.pass_context
def decorator(__ctx, *args, **kwargs):
with create_app().app_context():
return __ctx.invoke(f, *args, **kwargs)
return update_wrapper(decorator, f)
class AppGroup(click.Group):
"""This works similar to a regular click :class:`~click.Group` but it
changes the behavior of the :meth:`command` decorator so that it
automatically wraps the functions in :func:`with_appcontext`.
Not to be confused with :class:`FlaskGroup`.
"""
def command(self, *args, **kwargs):
"""This works exactly like the method of the same name on a regular
:class:`click.Group` but it wraps callbacks in :func:`with_appcontext`
unless it's disabled by passing ``with_appcontext=False``.
"""
wrap_for_ctx = kwargs.pop('with_appcontext', True)
def decorator(f):
if wrap_for_ctx:
f = with_appcontext(f)
return click.Group.command(self, *args, **kwargs)(f)
return decorator
def group(self, *args, **kwargs):
"""This works exactly like the method of the same name on a regular
:class:`click.Group` but it defaults the group class to
:class:`AppGroup`.
"""
kwargs.setdefault('cls', AppGroup)
return click.Group.group(self, *args, **kwargs)
flask_cli = AppGroup()
@flask_cli.group()
def cli():
pass