tail logs in python

tail_logs.py

from subprocess import call
from datetime import datetime
import os


class Logs:
    LR_HOME = 'LIFERAY_HOME'
    LR_DEFAULT = '/opt/home/{}/liferay-current/'
    LOG_DIR = '{}logs/liferay.{}.log'
    DT_FORMAT = '%Y-%m-%d'
    TAIL = 'tail'
    FOLLOW = '-f'

    def __init__(self):
        self.lr_directory = self.get_liferay_home()
        self.log_date = self.get_log_date()
        self.log_path = self.get_log_path()

    def get_liferay_default(self):
        return self.LR_DEFAULT.format(os.getlogin())

    def get_liferay_home(self):
        return os.environ.get(self.LR_HOME, self.get_liferay_default())

    def get_log_date(self):
        return datetime.strftime(datetime.utcnow(), self.DT_FORMAT)

    def get_log_path(self):
        return self.LOG_DIR.format(self.lr_directory, self.log_date)

    def get_tail_cmd(self):
        return [self.TAIL, self.FOLLOW, self.log_path]


if __name__ == '__main__':
    logs = Logs()
    cmd = logs.get_tail_cmd()
    call(cmd)