def main():
from optparse import OptionParser
usage = """Usage: python gst_process <configuration file>
See the documentation for layout of the config file."""
parser = OptionParser(usage=usage)
parser.add_option("-b", "--import-base", action="store_true", help="imports GTFS and OSM data into the database", dest="import_base", default=False)
parser.add_option("-r", "--import-routes", action="store_true", help="imports routing data into the database", dest="import_routes", default=False)
parser.add_option("-i", "--import-all", action="store_true", help="imports GTFS, OSM and routing data into the database", dest="import_all", default=False)
parser.add_option("-c", "--calculate", action="store_true", help="calculates shortest paths", dest="calculate", default=False)
parser.add_option("-e", "--export", action="store_true", help="exports the calculted paths as CSV-files", dest="export", default=False)
(options, args) = parser.parse_args()
if DEBUG: print(options)
if len(args) != 1:
parser.print_help()
exit(-1)
try:
configuration, psql_connect_string = read_config(args[0])
except:
print(colored('ERROR: failed reading the configuration file', 'red'))
if DEBUG: raise
parser.print_help()
exit(-1)
valide = validate_input(configuration, psql_connect_string, options)
if not valide:
parser.print_help()
exit(-1)
graph = None
if options.import_base or options.import_all:
print('Importing base data...')
build_base_data(psql_connect_string, configuration['osm-data'], configuration['transit-feed'])
if options.import_routes or options.import_all:
print('Importing routing data...')
graph = GraphDatabase(psql_connect_string).incarnate()
build_route_data(graph, psql_connect_string, configuration['times'], configuration['points'], configuration['routes'])
if options.calculate:
print('Calculating shortest paths...')
# only create tables if some importing was done
create_tables = options.import_all or options.import_base or options.import_routes
if not graph: graph = GraphDatabase(psql_connect_string).incarnate()
start = time.time()
calculate_routes(graph, psql_connect_string, configuration, num_processes=configuration['parallel-calculations'])
cprint('total calculation time: %s' % utils.seconds_time_string(time.time() - start), attrs=['bold'])
try:
graph.destroy()
except:
pass
if options.export:
print('Exporting paths...')
export_results(psql_connect_string, configuration['results'], configuration['result-details'])
print('DONE')
def print_status(connection, logfile=None):
def calc_calculation_time(routes_previously_wating, routes_waiting, all_routes, time_finished):
if routes_previously_wating != routes_waiting:
if (not routes_previously_wating) or (all_routes - routes_previously_wating == 0):
return None, routes_waiting
routes_processed = all_routes - routes_previously_wating
routes_previously_wating = routes_waiting
routes_per_second = (time.time() - time_started) / routes_processed
time_finished = (all_routes - routes_processed) * routes_per_second
return time_finished, routes_previously_wating
time_started = time.time()
time_finished = None
routes_previously_wating = None
routes_waiting = None
cursor = connection.cursor()
cursor.execute('SELECT count(*) FROM cal_routes')
all_routes = cursor.fetchone()[0]
finished = False
while not finished:
time.sleep(1.0)
cursor.execute('SELECT count(*) FROM cal_routes WHERE NOT done')
routes_waiting = cursor.fetchone()[0]
if not all_routes:
finished = True
else:
if time_finished:
text = '\r%s routes waiting to be processed. Finished in about %s ' % (routes_waiting,
utils.seconds_time_string(time_finished))
sys.stdout.write(text)
sys.stdout.flush()
## if logfile:
## logfile.write(text)
## logfile.flush()
else:
text = '\r%s routes waiting to be processed. Please wait ... ' % routes_waiting
sys.stdout.write(text)
sys.stdout.flush()
## if logfile:
## logfile.write(text)
## logfile.flush()
time_finished, routes_previously_wating = calc_calculation_time(routes_previously_wating, routes_waiting, all_routes, time_finished)
connection.close()
sys.stdout.write('\rThe last routes getting processed. Please wait ... \n')
sys.stdout.flush()
