Function main

web/pgAdmin4.py:160–222

()

# The entry point
##########################################################################
def main():
    # Set null device file path to stdout, stdin, stderr if they are None
    for _name in ('stdin', 'stdout', 'stderr'):
        if getattr(sys, _name) is None:
            setattr(sys, _name,
                    open(os.devnull, 'r' if _name == 'stdin' else 'w'))

    # 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 not app.PGADMIN_RUNTIME:
        print(
            "Starting %s. Please navigate to http://%s:%d in your browser." %
            (config.APP_NAME, config.DEFAULT_SERVER,
             config.EFFECTIVE_SERVER_PORT)
        )
        sys.stdout.flush()
    else:
        # For unknown reason the 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

    # Initialize Flask service only once
    # If `WERKZEUG_RUN_MAIN` is None, i.e: app is initializing for first time
    # so set `use_reloader` = False, thus reload won't call.
    # Reference:
    # https://github.com/pallets/werkzeug/issues/220#issuecomment-11176538
    try:
        if config.DEBUG:
            app.run(
                host=config.DEFAULT_SERVER,
                port=config.EFFECTIVE_SERVER_PORT,
                debug=config.DEBUG,
                use_reloader=(
                    (not app.PGADMIN_RUNTIME) and
                    os.environ.get("WERKZEUG_RUN_MAIN") is not None
                ),
                threaded=config.THREADED_MODE
            )
        else:
            try:
                socketio.run(
                    app,
                    debug=config.DEBUG,
                    allow_unsafe_werkzeug=True,
                    host=config.DEFAULT_SERVER,
                    port=config.EFFECTIVE_SERVER_PORT,
                )
            except KeyboardInterrupt: