import json
from datetime import datetime

class LogEntryJSONEncoder(json.JSONEncoder):
  """ JSON encoder to encode datetimes to ISO8601 format. """
  def default(self, obj):
    if isinstance(obj, datetime):
      return obj.isoformat()

    return super(LogEntryJSONEncoder, self).default(obj)

def logs_json_serializer(logentry, sort_keys=False):
  """ Serializes a LogEntry to json bytes. """
  return json.dumps(logentry.to_dict(), cls=LogEntryJSONEncoder,
                    ensure_ascii=True, sort_keys=sort_keys).encode('ascii')