472 lines
18 KiB
Python
Executable file
472 lines
18 KiB
Python
Executable file
#!/usr/bin/env python
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"""Event Man(ager)
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Your friendly manager of attendees at an event.
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Copyright 2015 Davide Alberani <da@erlug.linux.it>
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RaspiBO <info@raspibo.org>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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import os
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import glob
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import json
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import logging
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import datetime
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import tornado.httpserver
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import tornado.ioloop
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import tornado.options
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from tornado.options import define, options
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import tornado.web
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from tornado import gen, escape, process
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import utils
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import backend
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ENCODING = 'utf8'
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PROCESS_TIMEOUT = 60
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class BaseHandler(tornado.web.RequestHandler):
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"""Base class for request handlers."""
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# A property to access the first value of each argument.
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arguments = property(lambda self: dict([(k, v[0])
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for k, v in self.request.arguments.iteritems()]))
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_bool_convert = {
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'0': False,
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'n': False,
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'f': False,
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'no': False,
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'off': False,
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'false': False,
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'1': True,
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'y': True,
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't': True,
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'on': True,
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'yes': True,
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'true': True
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}
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def tobool(self, obj):
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if isinstance(obj, (list, tuple)):
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obj = obj[0]
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if isinstance(obj, (str, unicode)):
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obj = obj.lower()
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return self._bool_convert.get(obj, obj)
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def _arguments_tobool(self):
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return dict([(k, self.tobool(v)) for k, v in self.arguments.iteritems()])
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def initialize(self, **kwargs):
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"""Add every passed (key, value) as attributes of the instance."""
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for key, value in kwargs.iteritems():
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setattr(self, key, value)
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class RootHandler(BaseHandler):
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"""Handler for the / path."""
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angular_app_path = os.path.join(os.path.dirname(__file__), "angular_app")
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@gen.coroutine
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def get(self, *args, **kwargs):
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# serve the ./angular_app/index.html file
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with open(self.angular_app_path + "/index.html", 'r') as fd:
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self.write(fd.read())
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class CollectionHandler(BaseHandler):
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"""Base class for handlers that need to interact with the database backend.
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Introduce basic CRUD operations."""
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# set of documents we're managing (a collection in MongoDB or a table in a SQL database)
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collection = None
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def _filter_results(self, results, params):
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"""Filter a list using keys and values from a dictionary.
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:param results: the list to be filtered
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:type results: list
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:param params: a dictionary of items that must all be present in an original list item to be included in the return
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:return: list of items that have all the keys with the same values as params
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:rtype: list"""
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if not params:
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return results
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filtered = []
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for result in results:
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add = True
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for key, value in params.iteritems():
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if key not in result or result[key] != value:
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add = False
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break
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if add:
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filtered.append(result)
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return filtered
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def _dict2env(self, data):
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"""Convert a dictionary into a form suitable to be passed as environment variables."""
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ret = {}
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for key, value in data.iteritems():
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if isinstance(value, (list, tuple, dict)):
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continue
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try:
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ret[key.upper()] = unicode(value).encode(ENCODING)
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except:
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continue
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return ret
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@gen.coroutine
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def get(self, id_=None, resource=None, resource_id=None, **kwargs):
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if resource:
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# Handle access to sub-resources.
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method = getattr(self, 'handle_get_%s' % resource, None)
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if method and callable(method):
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self.write(method(id_, resource_id, **kwargs))
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return
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if id_ is not None:
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# read a single document
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self.write(self.db.get(self.collection, id_))
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else:
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# return an object containing the list of all objects in the collection;
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# e.g.: {'events': [{'_id': 'obj1-id, ...}, {'_id': 'obj2-id, ...}, ...]}
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# Please, never return JSON lists that are not encapsulated into an object,
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# to avoid XSS vulnerabilities.
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self.write({self.collection: self.db.query(self.collection)})
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@gen.coroutine
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def post(self, id_=None, resource=None, resource_id=None, **kwargs):
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data = escape.json_decode(self.request.body or '{}')
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if resource:
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# Handle access to sub-resources.
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method = getattr(self, 'handle_%s_%s' % (self.request.method.lower(), resource), None)
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if method and callable(method):
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self.write(method(id_, resource_id, data, **kwargs))
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return
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if id_ is None:
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newData = self.db.add(self.collection, data)
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else:
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merged, newData = self.db.update(self.collection, id_, data)
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self.write(newData)
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# PUT (update an existing document) is handled by the POST (create a new document) method
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put = post
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@gen.coroutine
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def delete(self, id_=None, resource=None, resource_id=None, **kwargs):
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if resource:
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# Handle access to sub-resources.
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method = getattr(self, 'handle_delete_%s' % resource, None)
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if method and callable(method):
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self.write(method(id_, resource_id, **kwargs))
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return
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if id_:
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self.db.delete(self.collection, id_)
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self.write({'success': True})
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def on_timeout(self, cmd, pipe):
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"""Kill a process that is taking too long to complete."""
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logging.debug('cmd %s is taking too long: killing it' % ' '.join(cmd))
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try:
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pipe.proc.kill()
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except:
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pass
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def on_exit(self, returncode, cmd, pipe):
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"""Callback executed when a subprocess execution is over."""
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self.ioloop.remove_timeout(self.timeout)
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logging.debug('cmd: %s returncode: %d' % (' '.join(cmd), returncode))
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@gen.coroutine
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def run_subprocess(self, cmd, stdin_data=None, env=None):
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"""Execute the given action.
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:param cmd: the command to be run with its command line arguments
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:type cmd: list
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:param stdin_data: data to be sent over stdin
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:type stdin_data: str
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:param env: environment of the process
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:type env: dict
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"""
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self.ioloop = tornado.ioloop.IOLoop.instance()
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p = process.Subprocess(cmd, close_fds=True, stdin=process.Subprocess.STREAM,
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stdout=process.Subprocess.STREAM, stderr=process.Subprocess.STREAM, env=env)
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p.set_exit_callback(lambda returncode: self.on_exit(returncode, cmd, p))
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self.timeout = self.ioloop.add_timeout(datetime.timedelta(seconds=PROCESS_TIMEOUT),
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lambda: self.on_timeout(cmd, p))
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yield gen.Task(p.stdin.write, stdin_data or '')
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p.stdin.close()
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out, err = yield [gen.Task(p.stdout.read_until_close),
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gen.Task(p.stderr.read_until_close)]
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logging.debug('cmd: %s' % ' '.join(cmd))
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logging.debug('cmd stdout: %s' % out)
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logging.debug('cmd strerr: %s' % err)
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raise gen.Return((out, err))
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@gen.coroutine
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def run_triggers(self, action, stdin_data=None, env=None):
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"""Asynchronously execute triggers for the given action.
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:param action: action name; scripts in directory ./data/triggers/{action}.d will be run
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:type action: str
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:param stdin_data: a python dictionary that will be serialized in JSON and sent to the process over stdin
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:type stdin_data: dict
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:param env: environment of the process
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:type stdin_data: dict
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"""
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logging.debug('running triggers for action "%s"' % action)
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stdin_data = stdin_data or {}
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try:
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stdin_data = json.dumps(stdin_data)
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except:
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stdin_data = '{}'
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for script in glob.glob(os.path.join(self.data_dir, 'triggers', '%s.d' % action, '*')):
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if not (os.path.isfile(script) and os.access(script, os.X_OK)):
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continue
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out, err = yield gen.Task(self.run_subprocess, [script], stdin_data, env)
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class PersonsHandler(CollectionHandler):
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"""Handle requests for Persons."""
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collection = 'persons'
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object_id = 'person_id'
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def handle_get_events(self, id_, resource_id=None, **kwargs):
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# Get a list of events attended by this person.
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# Inside the data of each event, a 'person_data' dictionary is
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# created, duplicating the entry for the current person (so that
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# there's no need to parse the 'persons' list on the client).
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#
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# If resource_id is given, only the specified event is considered.
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#
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# If the 'all' parameter is given, every event (also unattended ones) is returned.
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args = self.request.arguments
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query = {}
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if id_ and not self.tobool(args.get('all')):
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query = {'persons.person_id': id_}
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if resource_id:
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query['_id'] = resource_id
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events = self.db.query('events', query)
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for event in events:
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person_data = {}
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for persons in event.get('persons') or []:
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if str(persons.get('person_id')) == id_:
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person_data = persons
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break
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event['person_data'] = person_data
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if resource_id and events:
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return events[0]
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return {'events': events}
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class EventsHandler(CollectionHandler):
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"""Handle requests for Events."""
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collection = 'events'
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object_id = 'event_id'
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def _get_person_data(self, person_id_or_query, persons):
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"""Filter a list of persons returning the first item with a given person_id
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or which set of keys specified in a dictionary match their respective values."""
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for person in persons:
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if isinstance(person_id_or_query, dict):
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if all(person.get(k) == v for k, v in person_id_or_query.iteritems()):
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return person
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else:
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if str(person.get('person_id')) == person_id_or_query:
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return person
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return {}
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def handle_get_persons(self, id_, resource_id=None):
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# Return every person registered at this event, or the information
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# about a specific person.
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query = {'_id': id_}
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event = self.db.query('events', query)[0]
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if resource_id:
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return {'person': self._get_person_data(resource_id, event.get('persons') or [])}
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persons = self._filter_results(event.get('persons') or [], self.arguments)
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return {'persons': persons}
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def handle_post_persons(self, id_, person_id, data):
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# Add a person to the list of persons registered at this event.
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doc = self.db.query('events',
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{'_id': id_, 'persons.person_id': person_id})
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if '_id' in data:
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del data['_id']
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if not doc:
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merged, doc = self.db.update('events',
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{'_id': id_},
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{'persons': data},
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operation='append',
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create=False)
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return {'event': doc}
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def handle_put_persons(self, id_, person_id, data):
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# Update an existing entry for a person registered at this event.
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query = dict([('persons.%s' % k, v) for k, v in self.arguments.iteritems()])
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query['_id'] = id_
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if person_id is not None:
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query['persons.person_id'] = person_id
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old_person_data = {}
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current_event = self.db.query(self.collection, query)
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if current_event:
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current_event = current_event[0]
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else:
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current_event = {}
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old_person_data = self._get_person_data(person_id or self.arguments,
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current_event.get('persons') or [])
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merged, doc = self.db.update('events', query,
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data, updateList='persons', create=False)
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new_person_data = self._get_person_data(person_id or self.arguments,
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doc.get('persons') or [])
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env = self._dict2env(new_person_data)
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env.update({'PERSON_ID': person_id, 'EVENT_ID': id_, 'EVENT_TITLE': doc.get('title', '')})
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stdin_data = {'old': old_person_data,
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'new': new_person_data,
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'event': doc,
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'merged': merged
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}
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self.run_triggers('update_person_in_event', stdin_data=stdin_data, env=env)
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if old_person_data and old_person_data.get('attended') != new_person_data.get('attended') \
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and new_person_data.get('attended'):
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self.run_triggers('attends', stdin_data=stdin_data, env=env)
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return {'event': doc}
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def handle_delete_persons(self, id_, person_id):
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# Remove a specific person from the list of persons registered at this event.
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merged, doc = self.db.update('events',
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{'_id': id_},
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{'persons': {'person_id': person_id}},
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operation='delete',
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create=False)
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return {'event': doc}
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class EbCSVImportPersonsHandler(BaseHandler):
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"""Importer for CSV files exported from eventbrite."""
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csvRemap = {
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'Nome evento': 'event_title',
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'ID evento': 'event_id',
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'N. codice a barre': 'ebqrcode',
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'Cognome acquirente': 'surname',
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'Nome acquirente': 'name',
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'E-mail acquirente': 'email',
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'Cognome': 'surname',
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'Nome': 'name',
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'E-mail': 'email',
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'Indirizzo e-mail': 'email',
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'Tipologia biglietto': 'ticket_kind',
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'Data partecipazione': 'attending_datetime',
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'Data check-in': 'checkin_datetime',
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'Ordine n.': 'order_nr',
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'ID ordine': 'order_nr',
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'Titolo professionale': 'job',
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'Azienda': 'company',
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'Prefisso': 'name_title',
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'Prefisso (Sig., Sig.ra, ecc.)': 'name_title',
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}
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# Only these information are stored in the person collection.
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keepPersonData = ('name', 'surname', 'email', 'name_title', 'company', 'job')
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@gen.coroutine
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def post(self, **kwargs):
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targetEvent = None
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try:
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targetEvent = self.get_body_argument('targetEvent')
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except:
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pass
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reply = dict(total=0, valid=0, merged=0, new_in_event=0)
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for fieldname, contents in self.request.files.iteritems():
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for content in contents:
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filename = content['filename']
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parseStats, persons = utils.csvParse(content['body'], remap=self.csvRemap)
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reply['total'] += parseStats['total']
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reply['valid'] += parseStats['valid']
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for person in persons:
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person_data = dict([(k, person[k]) for k in self.keepPersonData
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if k in person])
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merged, stored_person = self.db.update('persons',
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[('email',), ('name', 'surname')],
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person_data)
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if merged:
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reply['merged'] += 1
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if targetEvent and stored_person:
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event_id = targetEvent
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person_id = stored_person['_id']
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registered_data = {
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'person_id': person_id,
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'attended': False,
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'from_file': filename}
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person.update(registered_data)
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if not self.db.query('events',
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{'_id': event_id, 'persons.person_id': person_id}):
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self.db.update('events', {'_id': event_id},
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{'persons': person},
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operation='appendUnique')
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reply['new_in_event'] += 1
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self.write(reply)
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class SettingsHandler(BaseHandler):
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"""Handle requests for Settings."""
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@gen.coroutine
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def get(self, **kwds):
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query = self._arguments_tobool()
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settings = self.db.query('settings', query)
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self.write({'settings': settings})
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def run():
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"""Run the Tornado web application."""
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# command line arguments; can also be written in a configuration file,
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# specified with the --config argument.
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define("port", default=5242, help="run on the given port", type=int)
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define("data", default=os.path.join(os.path.dirname(__file__), "data"),
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help="specify the directory used to store the data")
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define("mongodbURL", default=None,
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help="URL to MongoDB server", type=str)
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define("dbName", default='eventman',
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help="Name of the MongoDB database to use", type=str)
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define("debug", default=False, help="run in debug mode")
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define("config", help="read configuration file",
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callback=lambda path: tornado.options.parse_config_file(path, final=False))
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tornado.options.parse_command_line()
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if options.debug:
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logger = logging.getLogger()
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logger.setLevel(logging.DEBUG)
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# database backend connector
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db_connector = backend.EventManDB(url=options.mongodbURL, dbName=options.dbName)
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init_params = dict(db=db_connector, data_dir=options.data)
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application = tornado.web.Application([
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(r"/persons/?(?P<id_>\w+)?/?(?P<resource>\w+)?/?(?P<resource_id>\w+)?", PersonsHandler, init_params),
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(r"/events/?(?P<id_>\w+)?/?(?P<resource>\w+)?/?(?P<resource_id>\w+)?", EventsHandler, init_params),
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(r"/(?:index.html)?", RootHandler, init_params),
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(r"/ebcsvpersons", EbCSVImportPersonsHandler, init_params),
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(r"/settings", SettingsHandler, init_params),
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(r'/(.*)', tornado.web.StaticFileHandler, {"path": "angular_app"})
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],
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template_path=os.path.join(os.path.dirname(__file__), "templates"),
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static_path=os.path.join(os.path.dirname(__file__), "static"),
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debug=options.debug)
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http_server = tornado.httpserver.HTTPServer(application)
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http_server.listen(options.port)
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tornado.ioloop.IOLoop.instance().start()
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if __name__ == '__main__':
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run()
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