pgadmin4/web/pgAdmin4.py
Sarah McAlear 6283ef7f5e [Configuration][Migration] Use 'alembic' for migration of the SQLite
based configuration file from one version to another, and also allows us
to have a single path of creating the table instead of creating tables
using SQLAlchemy or hand rolled SQL

This allows us to run the migrations directly in the code, and it will
avoid the error prone version numbering.

Patched by: Sarah McAlear
Revisions: Joao Pedro De Almeida Pereira, George Gelashvili.
Reviewed by: Ashesh Vashi, Murtuza Zabuawala
2017-04-24 08:37:27 +05:30

105 lines
3.6 KiB
Python

##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2017, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################
"""This is the main application entry point for pgAdmin 4. If running on
a webserver, this will provide the WSGI interface, otherwise, we're going
to start a web server."""
import os
import sys
# We need to include the root directory in sys.path to ensure that we can
# find everything we need when running in the standalone runtime.
root = os.path.dirname(os.path.realpath(__file__))
if sys.path[0] != root:
sys.path.insert(0, root)
import config
from pgadmin import create_app
# Get the config database schema version. We store this in pgadmin.model
# as it turns out that putting it in the config files isn't a great idea
from pgadmin.model import SCHEMA_VERSION
config.SETTINGS_SCHEMA_VERSION = SCHEMA_VERSION
##########################################################################
# Server starup
##########################################################################
# Create the app!
app = create_app()
if config.DEBUG:
app.debug = True
else:
app.debug = False
# Start the web server. The port number should have already been set by the
# runtime if we're running in desktop mode, otherwise we'll just use the
# Flask default.
PGADMIN_RUNTIME = False
if 'PGADMIN_PORT' in globals():
app.logger.debug('Running under the desktop runtime, port: %s',
globals()['PGADMIN_PORT'])
server_port = int(globals()['PGADMIN_PORT'])
PGADMIN_RUNTIME = True
elif 'PGADMIN_PORT' in os.environ:
port = os.environ['PGADMIN_PORT']
app.logger.debug(
'Not running under the desktop runtime, port: %s',
port)
server_port = int(port)
else:
app.logger.debug(
'Not running under the desktop runtime, port: %s',
config.DEFAULT_SERVER_PORT)
server_port = config.DEFAULT_SERVER_PORT
# Let the application save the status about the runtime for using it later.
app.PGADMIN_RUNTIME = PGADMIN_RUNTIME
# Set the key if appropriate
if 'PGADMIN_KEY' in globals():
app.PGADMIN_KEY = globals()['PGADMIN_KEY']
app.logger.debug("Desktop security key: %s" % app.PGADMIN_KEY)
else:
app.PGADMIN_KEY = ''
# Output a startup message if we're not under the runtime and startup.
# If we're under WSGI, we don't need to worry about this
if __name__ == '__main__':
if not PGADMIN_RUNTIME:
print("Starting %s. Please navigate to http://%s:%d in your browser." %
(config.APP_NAME, config.DEFAULT_SERVER, server_port))
sys.stdout.flush()
else:
# For unknown reason the Qt runtime does not pass the environment
# variables (i.e. PYTHONHOME, and PYTHONPATH), to the Python
# sub-processes, leading to failures executing background processes.
#
# This has been observed only on windows. On *nix systems, it is likely
# picking the system python environment, which is good enough to run
# the process-executor.
#
# Setting PYTHONHOME launch them properly.
from pgadmin.utils import IS_WIN
if IS_WIN:
os.environ['PYTHONHOME'] = sys.prefix
try:
app.run(
host=config.DEFAULT_SERVER,
port=server_port,
use_reloader=((not PGADMIN_RUNTIME) and app.debug),
threaded=config.THREADED_MODE
)
except IOError:
app.logger.error("Error starting the app server: %s", sys.exc_info())