dendrite/appservice/README.md

# Application Service

This component interfaces with external [Application
Services](https://matrix.org/docs/spec/application_service/unstable.html).
This includes any HTTP endpoints that application services call, as well as talking
to any HTTP endpoints that application services provide themselves.

## Consumers

This component consumes and filters events from the Roomserver Kafka stream, passing on any necessary events to subscribing application services.
Add Application Service component (#462) * Add Application Service component The component subscribes to the Roomserver kafka stream, filtering events to be eventually sent off to relevant app services, as well as handling incoming HTTP traffic from app services on the `/matrix/app/r0/` route. Signed-off-by: Andrew Morgan <andrewm@matrix.org> Make linting happy Signed-off-by: Andrew Morgan <andrewm@matrix.org> 2018-05-24 12:54:42 +00:00			`# Application Service`

			`This component interfaces with external [Application`
			`Services](https://matrix.org/docs/spec/application_service/unstable.html).`
Send Application Service Events (#477) * Prevent sql scanning into nil value in accounts_table Signed-off-by: Andrew Morgan <andrewm@matrix.org> * Remove uneccessary logging, null checking * Don't forget to set the localpart * Simplify error checking * Store And Send Application Service Events * Modify INSTALL.md and dendrite-config.yaml for the new appservice database * Correct all instances of casing on 'application service' to align with spec * Store incoming events that an app service is interested in in the database to be later read by transaction workers. * Retrieve these events from transaction workers, one per AS. * Minimal transaction ID data is stored as well to recover after server failure. * Send events to AS and exponentially backoff on failure. Signed-off-by: Andrew Morgan <andrewm@matrix.org> * Finish my own sentences. * Fix up database interaction * Change to event-based AS sending * Reduce cyclomatic complexity * Appease the errcheck gods * Delete by int ID instead of string. This was causing some events to not be deleted, as < an eventID doesn't really make much sense. * Check if there are more events to send before sleeping * Send same transaction if last send attempt failed * Don't backoff on non-200s, tight send loop, 1 event query * Remove tight send loop. Fix events not being deleted * Additionally order by event id, track main.go * Return the last txnID, which our events are using * Remove old main.go file * Prevent duplicate events from being sent... * Strip event content if it doesn't contain anything Signed-off-by: Andrew Morgan <andrewm@matrix.org> * Update gomatrixserverlib and use Unsigned AS event prop * Fixes * Fix sync server comment * Remove unnecessary printlns * Use logrus Fields * Worker state methods * Remove sillyness * Fix up event filtering * Handle transaction event limit in loop * Switch to using a sequence for transaction IDs * Don't verify self-signed AS certificates * Fix logging * Use gmsl.Event instead of AS-only event in transactions Also clear up the logic on lookupStateEvents a little bit. * Change invalid_txn_id to global (for efficiency) * Use a bool for EventsReady instead of an int 2018-07-05 16:34:59 +00:00			`This includes any HTTP endpoints that application services call, as well as talking`
			`to any HTTP endpoints that application services provide themselves.`
Add Application Service component (#462) * Add Application Service component The component subscribes to the Roomserver kafka stream, filtering events to be eventually sent off to relevant app services, as well as handling incoming HTTP traffic from app services on the `/matrix/app/r0/` route. Signed-off-by: Andrew Morgan <andrewm@matrix.org> Make linting happy Signed-off-by: Andrew Morgan <andrewm@matrix.org> 2018-05-24 12:54:42 +00:00
			`## Consumers`

Send Application Service Events (#477) * Prevent sql scanning into nil value in accounts_table Signed-off-by: Andrew Morgan <andrewm@matrix.org> * Remove uneccessary logging, null checking * Don't forget to set the localpart * Simplify error checking * Store And Send Application Service Events * Modify INSTALL.md and dendrite-config.yaml for the new appservice database * Correct all instances of casing on 'application service' to align with spec * Store incoming events that an app service is interested in in the database to be later read by transaction workers. * Retrieve these events from transaction workers, one per AS. * Minimal transaction ID data is stored as well to recover after server failure. * Send events to AS and exponentially backoff on failure. Signed-off-by: Andrew Morgan <andrewm@matrix.org> * Finish my own sentences. * Fix up database interaction * Change to event-based AS sending * Reduce cyclomatic complexity * Appease the errcheck gods * Delete by int ID instead of string. This was causing some events to not be deleted, as < an eventID doesn't really make much sense. * Check if there are more events to send before sleeping * Send same transaction if last send attempt failed * Don't backoff on non-200s, tight send loop, 1 event query * Remove tight send loop. Fix events not being deleted * Additionally order by event id, track main.go * Return the last txnID, which our events are using * Remove old main.go file * Prevent duplicate events from being sent... * Strip event content if it doesn't contain anything Signed-off-by: Andrew Morgan <andrewm@matrix.org> * Update gomatrixserverlib and use Unsigned AS event prop * Fixes * Fix sync server comment * Remove unnecessary printlns * Use logrus Fields * Worker state methods * Remove sillyness * Fix up event filtering * Handle transaction event limit in loop * Switch to using a sequence for transaction IDs * Don't verify self-signed AS certificates * Fix logging * Use gmsl.Event instead of AS-only event in transactions Also clear up the logic on lookupStateEvents a little bit. * Change invalid_txn_id to global (for efficiency) * Use a bool for EventsReady instead of an int 2018-07-05 16:34:59 +00:00			`This component consumes and filters events from the Roomserver Kafka stream, passing on any necessary events to subscribing application services.`