#!/usr/bin/env python
# Licensed to Cloudera, Inc. under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  Cloudera, Inc. licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import logging
import os

from pytz import UnknownTimeZoneError, datetime, timezone

class Formatter(logging.Formatter):
  def formatTime(self, record, datefmt=None):
    try:
      tz = timezone(os.environ['TZ'])
    except (KeyError, UnknownTimeZoneError):
      tz = None

    try:
      ct = datetime.datetime.fromtimestamp(record.created, tz=tz)
    except (OverflowError, TypeError, ValueError):
      # Fallback to original.
      return super(Formatter, self).formatTime(record, datefmt=datefmt)

    if datefmt:
      s = ct.strftime(datefmt)
    else:
      t = ct.strftime("%Y-%m-%d %H:%M:%S")
      s = "%s,%03d" % (t, record.msecs)
    return s


class MessageOnlyFormatter(logging.Formatter):
  def formatTime(self, record, datefmt=None):
    return ''

  def format(self, record):
    return record.getMessage()

