| #!/usr/bin/python2.5 |
#!/usr/bin/python2.5 |
| |
|
| # Copyright (C) 2007 Google Inc. |
# Copyright (C) 2007 Google Inc. |
| # |
# |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
# Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
# you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
# You may obtain a copy of the License at |
| # |
# |
| # http://www.apache.org/licenses/LICENSE-2.0 |
# http://www.apache.org/licenses/LICENSE-2.0 |
| # |
# |
| # Unless required by applicable law or agreed to in writing, software |
# Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
# distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
# See the License for the specific language governing permissions and |
| # limitations under the License. |
# limitations under the License. |
| |
|
| """ |
""" |
| An example application that uses the transitfeed module. |
An example application that uses the transitfeed module. |
| |
|
| You must provide a Google Maps API key. |
You must provide a Google Maps API key. |
| """ |
""" |
| |
|
| |
|
| import BaseHTTPServer, sys, urlparse |
import BaseHTTPServer, sys, urlparse |
| import bisect |
import bisect |
| from gtfsscheduleviewer.marey_graph import MareyGraph |
from gtfsscheduleviewer.marey_graph import MareyGraph |
| import gtfsscheduleviewer |
import gtfsscheduleviewer |
| import mimetypes |
import mimetypes |
| import os.path |
import os.path |
| import re |
import re |
| import signal |
import signal |
| import simplejson |
import simplejson |
| import socket |
import socket |
| import time |
import time |
| import datetime |
import datetime |
| import transitfeed |
import transitfeed |
| from transitfeed import util |
from transitfeed import util |
| import urllib |
import urllib |
| |
|
| |
|
| # By default Windows kills Python with Ctrl+Break. Instead make Ctrl+Break |
# By default Windows kills Python with Ctrl+Break. Instead make Ctrl+Break |
| # raise a KeyboardInterrupt. |
# raise a KeyboardInterrupt. |
| if hasattr(signal, 'SIGBREAK'): |
if hasattr(signal, 'SIGBREAK'): |
| signal.signal(signal.SIGBREAK, signal.default_int_handler) |
signal.signal(signal.SIGBREAK, signal.default_int_handler) |
| |
|
| |
|
| mimetypes.add_type('text/plain', '.vbs') |
mimetypes.add_type('text/plain', '.vbs') |
| |
|
| |
|
| class ResultEncoder(simplejson.JSONEncoder): |
class ResultEncoder(simplejson.JSONEncoder): |
| def default(self, obj): |
def default(self, obj): |
| try: |
try: |
| iterable = iter(obj) |
iterable = iter(obj) |
| except TypeError: |
except TypeError: |
| pass |
pass |
| else: |
else: |
| return list(iterable) |
return list(iterable) |
| return simplejson.JSONEncoder.default(self, obj) |
return simplejson.JSONEncoder.default(self, obj) |
| |
|
| # Code taken from |
# Code taken from |
| # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/425210/index_txt |
# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/425210/index_txt |
| # An alternate approach is shown at |
# An alternate approach is shown at |
| # http://mail.python.org/pipermail/python-list/2003-July/212751.html |
# http://mail.python.org/pipermail/python-list/2003-July/212751.html |
| # but it requires multiple threads. A sqlite object can only be used from one |
# but it requires multiple threads. A sqlite object can only be used from one |
| # thread. |
# thread. |
| class StoppableHTTPServer(BaseHTTPServer.HTTPServer): |
class StoppableHTTPServer(BaseHTTPServer.HTTPServer): |
| def server_bind(self): |
def server_bind(self): |
| BaseHTTPServer.HTTPServer.server_bind(self) |
BaseHTTPServer.HTTPServer.server_bind(self) |
| self.socket.settimeout(1) |
self.socket.settimeout(1) |
| self._run = True |
self._run = True |
| |
|
| def get_request(self): |
def get_request(self): |
| while self._run: |
while self._run: |
| try: |
try: |
| sock, addr = self.socket.accept() |
sock, addr = self.socket.accept() |
| sock.settimeout(None) |
sock.settimeout(None) |
| return (sock, addr) |
return (sock, addr) |
| except socket.timeout: |
except socket.timeout: |
| pass |
pass |
| |
|
| def stop(self): |
def stop(self): |
| self._run = False |
self._run = False |
| |
|
| def serve(self): |
def serve(self): |
| while self._run: |
while self._run: |
| self.handle_request() |
self.handle_request() |
| |
|
| |
|
| def StopToTuple(stop): |
def StopToTuple(stop): |
| """Return tuple as expected by javascript function addStopMarkerFromList""" |
"""Return tuple as expected by javascript function addStopMarkerFromList""" |
| return (stop.stop_id, stop.stop_name, float(stop.stop_lat), |
return (stop.stop_id, stop.stop_name, float(stop.stop_lat), |
| float(stop.stop_lon), stop.location_type, stop.stop_code) |
float(stop.stop_lon), stop.location_type, stop.stop_code) |
| def StopZoneToTuple(stop): |
def StopZoneToTuple(stop): |
| """Return tuple as expected by javascript function addStopMarkerFromList""" |
"""Return tuple as expected by javascript function addStopMarkerFromList""" |
| return (stop.stop_id, stop.stop_name, float(stop.stop_lat), |
return (stop.stop_id, stop.stop_name, float(stop.stop_lat), |
| float(stop.stop_lon), stop.location_type, stop.stop_code, stop.zone_id) |
float(stop.stop_lon), stop.location_type, stop.stop_code, stop.zone_id) |
| |
|
| class ScheduleRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler): |
class ScheduleRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler): |
| cache = {} |
cache = {} |
| |
|
| def do_GET(self): |
def do_GET(self): |
| scheme, host, path, x, params, fragment = urlparse.urlparse(self.path) |
scheme, host, path, x, params, fragment = urlparse.urlparse(self.path) |
| parsed_params = {} |
parsed_params = {} |
| for k in params.split('&'): |
for k in params.split('&'): |
| k = urllib.unquote(k) |
k = urllib.unquote(k) |
| if '=' in k: |
if '=' in k: |
| k, v = k.split('=', 1) |
k, v = k.split('=', 1) |
| parsed_params[k] = unicode(v, 'utf8') |
parsed_params[k] = unicode(v, 'utf8') |
| else: |
else: |
| parsed_params[k] = '' |
parsed_params[k] = '' |
| |
|
| if path == '/': |
if path == '/': |
| return self.handle_GET_home() |
return self.handle_GET_home() |
| |
|
| m = re.match(r'/json/([a-z]{1,64})', path) |
m = re.match(r'/json/([a-z]{1,64})', path) |
| if m: |
if m: |
| handler_name = 'handle_json_GET_%s' % m.group(1) |
handler_name = 'handle_json_GET_%s' % m.group(1) |
| handler = getattr(self, handler_name, None) |
handler = getattr(self, handler_name, None) |
| if callable(handler): |
if callable(handler): |
| return self.handle_json_wrapper_GET(handler, parsed_params, handler_name) |
return self.handle_json_wrapper_GET(handler, parsed_params, handler_name) |
| |
|
| # Restrict allowable file names to prevent relative path attacks etc |
# Restrict allowable file names to prevent relative path attacks etc |
| m = re.match(r'/file/([a-z0-9_-]{1,64}\.?[a-z0-9_-]{1,64})$', path) |
m = re.match(r'/file/([a-z0-9_-]{1,64}\.?[a-z0-9_-]{1,64})$', path) |
| if m and m.group(1): |
if m and m.group(1): |
| try: |
try: |
| f, mime_type = self.OpenFile(m.group(1)) |
f, mime_type = self.OpenFile(m.group(1)) |
| return self.handle_static_file_GET(f, mime_type) |
return self.handle_static_file_GET(f, mime_type) |
| except IOError, e: |
except IOError, e: |
| print "Error: unable to open %s" % m.group(1) |
print "Error: unable to open %s" % m.group(1) |
| # Ignore and treat as 404 |
# Ignore and treat as 404 |
| |
|
| m = re.match(r'/([a-z]{1,64})', path) |
m = re.match(r'/([a-z]{1,64})', path) |
| if m: |
if m: |
| handler_name = 'handle_GET_%s' % m.group(1) |
handler_name = 'handle_GET_%s' % m.group(1) |
| handler = getattr(self, handler_name, None) |
handler = getattr(self, handler_name, None) |
| if callable(handler): |
if callable(handler): |
| return handler(parsed_params) |
return handler(parsed_params) |
| |
|
| return self.handle_GET_default(parsed_params, path) |
return self.handle_GET_default(parsed_params, path) |
| |
|
| def OpenFile(self, filename): |
def OpenFile(self, filename): |
| """Try to open filename in the static files directory of this server. |
"""Try to open filename in the static files directory of this server. |
| Return a tuple (file object, string mime_type) or raise an exception.""" |
Return a tuple (file object, string mime_type) or raise an exception.""" |
| (mime_type, encoding) = mimetypes.guess_type(filename) |
(mime_type, encoding) = mimetypes.guess_type(filename) |
| assert mime_type |
assert mime_type |
| # A crude guess of when we should use binary mode. Without it non-unix |
# A crude guess of when we should use binary mode. Without it non-unix |
| # platforms may corrupt binary files. |
# platforms may corrupt binary files. |
| if mime_type.startswith('text/'): |
if mime_type.startswith('text/'): |
| mode = 'r' |
mode = 'r' |
| else: |
else: |
| mode = 'rb' |
mode = 'rb' |
| return open(os.path.join(self.server.file_dir, filename), mode), mime_type |
return open(os.path.join(self.server.file_dir, filename), mode), mime_type |
| |
|
| def handle_GET_default(self, parsed_params, path): |
def handle_GET_default(self, parsed_params, path): |
| self.send_error(404) |
self.send_error(404) |
| |
|
| def handle_static_file_GET(self, fh, mime_type): |
def handle_static_file_GET(self, fh, mime_type): |
| content = fh.read() |
content = fh.read() |
| self.send_response(200) |
self.send_response(200) |
| self.send_header('Content-Type', mime_type) |
self.send_header('Content-Type', mime_type) |
| self.send_header('Content-Length', str(len(content))) |
self.send_header('Content-Length', str(len(content))) |
| self.end_headers() |
self.end_headers() |
| self.wfile.write(content) |
self.wfile.write(content) |
| |
|
| def AllowEditMode(self): |
def AllowEditMode(self): |
| return False |
return False |
| |
|
| def handle_GET_home(self): |
def handle_GET_home(self): |
| schedule = self.server.schedule |
schedule = self.server.schedule |
| (min_lat, min_lon, max_lat, max_lon) = schedule.GetStopBoundingBox() |
(min_lat, min_lon, max_lat, max_lon) = schedule.GetStopBoundingBox() |
| forbid_editing = ('true', 'false')[self.AllowEditMode()] |
forbid_editing = ('true', 'false')[self.AllowEditMode()] |
| |
|
| agency = ', '.join(a.agency_name for a in schedule.GetAgencyList()).encode('utf-8') |
agency = ', '.join(a.agency_name for a in schedule.GetAgencyList()).encode('utf-8') |
| |
|
| key = self.server.key |
key = self.server.key |
| host = self.server.host |
host = self.server.host |
| |
|
| # A very simple template system. For a fixed set of values replace [xxx] |
# A very simple template system. For a fixed set of values replace [xxx] |
| # with the value of local variable xxx |
# with the value of local variable xxx |
| f, _ = self.OpenFile('index.html') |
f, _ = self.OpenFile('index.html') |
| content = f.read() |
content = f.read() |
| for v in ('agency', 'min_lat', 'min_lon', 'max_lat', 'max_lon', 'key', |
for v in ('agency', 'min_lat', 'min_lon', 'max_lat', 'max_lon', 'key', |
| 'host', 'forbid_editing'): |
'host', 'forbid_editing'): |
| content = content.replace('[%s]' % v, str(locals()[v])) |
content = content.replace('[%s]' % v, str(locals()[v])) |
| |
|
| self.send_response(200) |
self.send_response(200) |
| self.send_header('Content-Type', 'text/html') |
self.send_header('Content-Type', 'text/html') |
| self.send_header('Content-Length', str(len(content))) |
self.send_header('Content-Length', str(len(content))) |
| self.end_headers() |
self.end_headers() |
| self.wfile.write(content) |
self.wfile.write(content) |
| |
|
| def handle_json_GET_routepatterns(self, params): |
def handle_json_GET_routepatterns(self, params): |
| """Given a route_id generate a list of patterns of the route. For each |
"""Given a route_id generate a list of patterns of the route. For each |
| pattern include some basic information and a few sample trips.""" |
pattern include some basic information and a few sample trips.""" |
| schedule = self.server.schedule |
schedule = self.server.schedule |
| route = schedule.GetRoute(params.get('route', None)) |
route = schedule.GetRoute(params.get('route', None)) |
| if not route: |
if not route: |
| self.send_error(404) |
self.send_error(404) |
| return |
return |
| time = int(params.get('time', 0)) |
time = int(params.get('time', 0)) |
| sample_size = 10 # For each pattern return the start time for this many trips |
sample_size = 10 # For each pattern return the start time for this many trips |
| |
|
| pattern_id_trip_dict = route.GetPatternIdTripDict() |
pattern_id_trip_dict = route.GetPatternIdTripDict() |
| patterns = [] |
patterns = [] |
| |
|
| for pattern_id, trips in pattern_id_trip_dict.items(): |
for pattern_id, trips in pattern_id_trip_dict.items(): |
| time_stops = trips[0].GetTimeStops() |
time_stops = trips[0].GetTimeStops() |
| if not time_stops: |
if not time_stops: |
| continue |
continue |
| has_non_zero_trip_type = False; |
has_non_zero_trip_type = False; |
| for trip in trips: |
for trip in trips: |
| if trip['trip_type'] and trip['trip_type'] != '0': |
if trip['trip_type'] and trip['trip_type'] != '0': |
| has_non_zero_trip_type = True |
has_non_zero_trip_type = True |
| name = u'%s to %s, %d stops' % (time_stops[0][2].stop_name, time_stops[-1][2].stop_name, len(time_stops)) |
name = u'%s to %s, %d stops' % (time_stops[0][2].stop_name, time_stops[-1][2].stop_name, len(time_stops)) |
| transitfeed.SortListOfTripByTime(trips) |
transitfeed.SortListOfTripByTime(trips) |
| |
|
| num_trips = len(trips) |
num_trips = len(trips) |
| if num_trips <= sample_size: |
if num_trips <= sample_size: |
| start_sample_index = 0 |
start_sample_index = 0 |
| num_after_sample = 0 |
num_after_sample = 0 |
| else: |
else: |
| # Will return sample_size trips that start after the 'time' param. |
# Will return sample_size trips that start after the 'time' param. |
| |
|
| # Linear search because I couldn't find a built-in way to do a binary |
# Linear search because I couldn't find a built-in way to do a binary |
| # search with a custom key. |
# search with a custom key. |
| start_sample_index = len(trips) |
start_sample_index = len(trips) |
| for i, trip in enumerate(trips): |
for i, trip in enumerate(trips): |
| if trip.GetStartTime() >= time: |
if trip.GetStartTime() >= time: |
| start_sample_index = i |
start_sample_index = i |
| break |
break |
| |
|
| num_after_sample = num_trips - (start_sample_index + sample_size) |
num_after_sample = num_trips - (start_sample_index + sample_size) |
| if num_after_sample < 0: |
if num_after_sample < 0: |
| # Less than sample_size trips start after 'time' so return all the |
# Less than sample_size trips start after 'time' so return all the |
| # last sample_size trips. |
# last sample_size trips. |
| num_after_sample = 0 |
num_after_sample = 0 |