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#!/usr/bin/env python3.6 |
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"""Start Kytos SDN Platform core.""" |
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import signal |
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import sys |
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import daemon |
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from IPython.terminal.embed import InteractiveShellEmbed |
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from IPython.terminal.prompts import Prompts, Token |
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from traitlets.config.loader import Config |
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from kytos.core import Controller |
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from kytos.core.config import KytosConfig |
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class KytosPrompt(Prompts): |
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"""Configure Kytos prompt for interactive shell.""" |
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def in_prompt_tokens(self, cli=None): |
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"""Kytos IPython prompt.""" |
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return [(Token.Prompt, 'kytos $> ')] |
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def start_shell(controller): |
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"""Load Kytos interactive shell.""" |
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# pylint: disable=anomalous-backslash-in-string |
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banner1 = """\033[95m |
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_ _ |
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| | | | |
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| | ___ _| |_ ___ ___ |
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| |/ / | | | __/ _ \/ __| |
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| <| |_| | || (_) \__ \\ |
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|_|\_\\\\__, |\__\___/|___/ |
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__/ | |
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|___/ |
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\033[0m |
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Welcome to Kytos SDN Platform! |
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We are doing a huge effort to make sure that this console will work fine |
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but for now it's still experimental. |
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Kytos website.: https://kytos.io/ |
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Documentation.: https://docs.kytos.io/ |
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OF Address....:""" |
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exit_msg = "Stopping Kytos daemon... Bye, see you!" |
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address = controller.server.server_address[0] |
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port = controller.server.server_address[1] |
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banner1 += " tcp://{}:{}\n".format(address, port) |
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api_port = controller.api_server.port |
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banner1 += " WEB UI........: http://{}:{}/".format(address, api_port) |
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cfg = Config() |
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cfg.TerminalInteractiveShell.autocall = 2 |
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cfg.TerminalInteractiveShell.show_rewritten_input = False |
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ipshell = InteractiveShellEmbed(config=cfg, |
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banner1=banner1, |
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exit_msg=exit_msg) |
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ipshell.prompts = KytosPrompt(ipshell) |
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ipshell() |
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def main(): |
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"""Start main Kytos Daemon.""" |
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def stop_controller(signum, frame): # pylint: disable=unused-argument |
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"""Stop the controller before quitting.""" |
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if controller: |
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print('Stopping controller...') |
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# If stop() hangs, old ctrl+c behaviour will be restored |
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signal.signal(signal.SIGINT, kill_handler) |
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controller.stop() |
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kill_handler = signal.signal(signal.SIGINT, stop_controller) |
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config = KytosConfig() |
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controller = Controller(config.options['daemon']) |
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if controller.options.foreground: |
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try: |
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controller.start() |
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except SystemExit as exc: |
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controller.log.error(exc) |
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controller.log.info("Kytos start aborted.") |
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sys.exit() |
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start_shell(controller) |
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controller.stop() |
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else: |
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with daemon.DaemonContext(): |
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try: |
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controller.start() |
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except SystemExit as exc: |
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controller.log.error(exc) |
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controller.log.info("Kytos daemon start aborted.") |
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sys.exit() |
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kytos /
kytos
