Bug Report: TypeError: Object of type datetime is not JSON serializable

[thepsalmist]

An error occurs when attempting to serialize a datetime object to JSON when passing in rabbitmq_headers as extra_metadata to the StoryArchiveWriter

Sample rabbitmq_headers

rabbitmq_headers: {

x-death: [
{"count":"110L","exchange":"''","original-expiration":"'120000'","queue":"'fetcher-fast'","reason":"'expired'","routing-keys":"['fetcher-fast']","time":"datetime.datetime(2024, 12, 2, 19, 45, 19)"},
{"count":"1L","exchange":"''","original-expiration":"'3600000'","queue":"'fetcher-delay'","reason":"'expired'","routing-keys":"['fetcher-delay']","time":"datetime.datetime(2024, 12, 2, 19, 43, 16)"}
],
x-first-death-exchange: "",
x-first-death-queue: "fetcher-delay",
x-first-death-reason: "expired",
x-mc-name: "_on_input_message",
x-mc-retries: 2,
x-mc-what: "Retry('skipped due to recent connection failure')",
x-mc-when: "1733164994.9960396",
x-mc-where: "/app/indexer/workers/fetcher/tqfetcher.py:461",
x-mc-who: "fetcher"
}
}

[philbudne]

Yeah, I've hit my head on this when trying to use the qutil "dump_archives" command on the fetcher-fast queue, or on any -delay queue. Maybe the right place to make datetimes JSON-safe (by calling .isoformat()) might be between these two lines in the `dump_archives` method in qutil.py: ``` extras = {"rabbitmq_headers": properties.headers} aw.write_story(story, extra_metadata=extras, raise_errors=False) ``` Another possibility is to implement what the comment just above those two lines suggests? ``` # XXX just save headers that start with "x-mc-"? ``` Since the data in "rabbitmq_headers" data isn't used for anything (but it _COULD_ be useful in autopsy/forensic examination)