1.record the original opertion 'detail' and timestamp 'ts'
2.make time_format be cpmpatible for v2.2 and v2.4
3.convert type of 'ms' from string to integer
4.pre-process special type: ObjectId and Timestamp
not set time_format, so that make time_format be cpmpatible for v2.2, 2.4 and 2.6