cybermaggedon 4acd853023 Config push notify pattern: replace stateful pub/sub with signal+ fetch (#760) ... Replace the config push mechanism that broadcast the full config blob on a 'state' class pub/sub queue with a lightweight notify signal containing only the version number and affected config types. Processors fetch the full config via request/response from the config service when notified. This eliminates the need for the pub/sub 'state' queue class and stateful pub/sub services entirely. The config push queue moves from 'state' to 'flow' class — a simple transient signal rather than a retained message. This solves the RabbitMQ late-subscriber problem where restarting processes never received the current config because their fresh queue had no historical messages. Key changes: - ConfigPush schema: config dict replaced with types list - Subscribe-then-fetch startup with retry: processors subscribe to notify queue, fetch config via request/response, then process buffered notifies with version comparison to avoid race conditions - register_config_handler() accepts optional types parameter so handlers only fire when their config types change - Short-lived config request/response clients to avoid subscriber contention on non-persistent response topics - Config service passes affected types through put/delete/flow operations - Gateway ConfigReceiver rewritten with same notify pattern and retry loop Tests updated New tests: - register_config_handler: without types, with types, multiple types, multiple handlers - on_config_notify: old/same version skipped, irrelevant types skipped (version still updated), relevant type triggers fetch, handler without types always called, mixed handler filtering, empty types invokes all, fetch failure handled gracefully - fetch_config: returns config+version, raises on error response, stops client even on exception - fetch_and_apply_config: applies to all handlers on startup, retries on failure		2026-04-06 16:57:27 +01:00
..
kg	Config push notify pattern: replace stateful pub/sub with signal+ fetch (#760)	2026-04-06 16:57:27 +01:00
__init__.py	Feature/pkgsplit (#83)	2024-09-30 19:36:09 +01:00