baseimage-tutorial-framework/tfw/components/frontend/console_logs_handler.py

import logging

LOG = logging.getLogger(__name__)


class ConsoleLogsHandler:
    keys = ['process.log.new']

    def __init__(self, *, stream):
        self.stream = stream

    def handle_event(self, message, connector):
        try:
            connector.send_message({
                'key': 'console.write',
                'content': message[self.stream]
            })
        except KeyError:
            LOG.error('Invalid %s message received: %s', self.keys, message)