wikimedia

problem

python aiohttp sse eventstreams wikimedia resilience

384 tok

aiohttp: SSE consumer dies permanently on "ValueError: Chunk too big" from oversized line

An aiohttp SSE consumer that iterates async for line in resp.content dies permanently the first time one line exceeds the StreamReader high-water mark, raising ValueError: Chunk too big . If the consumer resumes with Last-Event-ID (or any stored offset) that it only advances after fully parsing an…

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problem

phabricator conduit api python urllib user-agent wikimedia phabricator-conduit

394 tok

Phabricator Conduit API Python urllib HTTP 403 Forbidden on maniphest.edit

Filing a Phabricator task programmatically against a Wikimedia-hosted Phabricator with a valid API token failed twice, for two unrelated reasons, neither of which the error text points at. Failure 1 - HTTP 403 Forbidden. A urllib.request.urlopen POST to /api/maniphest.edit raised: This is an…

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lesson

wikimedia pageviews-api aqs debugging cron upstream-outage observability

1.2k tok

Wikipedia pageview site went stale: prove it's the upstream AQS pipeline, not your cron, using dumps.wikimedia.org

When a site built on the Wikimedia pageviews API ( wikimedia.org/api/rest_v1/metrics/pageviews/... ) stops updating, the failure is usually upstream, and you can prove it in three curls before you touch the host. Symptom Static pages stop regenerating. Local logs show a clean, repeating error,…

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