janitor_1 exited with code 1

Hi, I tried to run the sysupgrade server using docker like it is written in the Readme. After starting the server with docker-compose up I get on the client:

# auc
auc/0.3.1-1
Server:    http://asu.<lokaldnsname>
Running:   22.03.3 r20028-43d71ad93e on lantiq/xrx200 (avm,fritz7412)
No data available (61)

I use nginx to forward http from asu.<lokaldnsname> (port 80) to asu.<lokaldnsname>:8000 Opening http://asu. in the browser shows me the correct Statuspage like on https://sysupgrade.openwrt.org.

There is a lot of output in the console. The only error i can find is:

[...]
janitor_1    | [2023-02-22 07:23:35,433] DEBUG in janitor: SNAPSHOT/mipsel_24kc: Skip package update
janitor_1    | [2023-02-22 07:23:35,433] INFO in janitor: Update SNAPSHOT/mips_24kc
janitor_1    | [2023-02-22 07:23:35,630] DEBUG in janitor: SNAPSHOT/mips_24kc: Skip package update
janitor_1    | Loading /home/build/asu/config.py
janitor_1    | Traceback (most recent call last):
janitor_1    |   File "/home/build/.local/bin/flask", line 8, in <module>
janitor_1    |     sys.exit(main())
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/flask/cli.py", line 1047, in main
janitor_1    |     cli.main()
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/core.py", line 1055, in main
janitor_1    |     rv = self.invoke(ctx)
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
janitor_1    |     return _process_result(sub_ctx.command.invoke(sub_ctx))
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
janitor_1    |     return _process_result(sub_ctx.command.invoke(sub_ctx))
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/core.py", line 1404, in invoke
janitor_1    |     return ctx.invoke(self.callback, **ctx.params)
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/core.py", line 760, in invoke
janitor_1    |     return __callback(*args, **kwargs)
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/decorators.py", line 26, in new_func
janitor_1    |     return f(get_current_context(), *args, **kwargs)
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/flask/cli.py", line 357, in decorator
janitor_1    |     return __ctx.invoke(f, *args, **kwargs)
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/click/core.py", line 760, in invoke
janitor_1    |     return __callback(*args, **kwargs)
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/asu/janitor.py", line 457, in update
janitor_1    |     update_meta_json()
janitor_1    |   File "/home/build/.local/lib/python3.10/site-packages/asu/janitor.py", line 419, in update_meta_json
janitor_1    |     json.dumps(
janitor_1    |   File "/usr/local/lib/python3.10/json/__init__.py", line 238, in dumps
janitor_1    |     **kw).encode(obj)
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 201, in encode
janitor_1    |     chunks = list(chunks)
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 431, in _iterencode
janitor_1    |     yield from _iterencode_dict(o, _current_indent_level)
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 405, in _iterencode_dict
janitor_1    |     yield from chunks
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 405, in _iterencode_dict
janitor_1    |     yield from chunks
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 405, in _iterencode_dict
janitor_1    |     yield from chunks
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 438, in _iterencode
janitor_1    |     o = _default(o)
janitor_1    |   File "/usr/local/lib/python3.10/json/encoder.py", line 179, in default
janitor_1    |     raise TypeError(f'Object of type {o.__class__.__name__} '
janitor_1    | TypeError: Object of type date is not JSON serializable
asu_janitor_1 exited with code 1
redis_1      | 1:M 22 Feb 2023 07:24:11.075 * 10000 changes in 60 seconds. Saving...
[...]

I think this is a bug, because I did everything like it is written in the Readme. Any hints, how to debug this?

Nevertheless: Thanks for developing this great software!

The traceback points to asu/janitor.py, specifically update_meta_json(). Start by inspecting that function and reproduce the failure with the documented docker-compose setup. Done means the janitor completes its update and generates the metadata JSON without the date serialization error, so the client can obtain data.