Record processing steps into history attribute with context manager

I often want to record an entry into history of my netcdf file/ xarray. While one can always add it manually, i.e.

ds.attrs["history"] = ds.attrs["history"] + "\n" + "message"

I was wondering if there's a better way... In a first attempt I tried using a context manager for this. Not sure if there are other approaches? Would that be something useful for xarray core? What are other people using for this?

Demo:

import datetime
import xarray as xr

class XrHistory():

    def __init__(self, array, message, timestamp=True):
        self._array = array
        self._message = message
        self._timestamp = timestamp

    def __enter__(self):
        if 'history' not in self._array.attrs:
            self._array.attrs['history'] = ""
        
        if self._message != self._array.attrs['history'].split('\n')[-1]:
            ts = f"{datetime.datetime.now().strftime('%a %b %d %H:%M:%S %Y')}: " if self._timestamp else ""
            
            self._array.attrs['history'] += f"\n{ts}{self._message}"
            self._message = None
        return self._array
    
    def __exit__(self, exc_type,exc_value, exc_traceback):
        pass

# ds is any xarray dataset...

with XrHistory(ds, "normalise data") as ds:
    ds["array_one"] = (ds.array_one - ds.array_one.mean(dim='time')) / ds.array_one.std(dim='time')

with XrHistory(ds, "subset data") as ds:
    ds = ds.sel(x=slice(10, 20), y=slice(10,20))

# ...

Start with the issue's context-manager demo and the xarray Dataset attrs/history behavior it describes. No source file or test is named, and the requested API and alternatives remain open questions; done would require an agreed design, implementation, and tests for recording history entries.