mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-30 02:01:56 -06:00
6353b0b7e4
* Add mscs/hooks package, begin work for msc2836 * Flesh out hooks and add SQL schema * Begin implementing core msc2836 logic * Add test harness * Linting * Implement visibility checks; stub out APIs for tests * Flesh out testing * Flesh out walkThread a bit * Persist the origin_server_ts as well * Edges table instead of relationships * Add nodes table for event metadata * LEFT JOIN to extract origin_server_ts for children * Add graph walking structs * Implement walking algorithm * Add more graph walking tests * Add auto_join for local rooms * Fix create table syntax on postgres * Add relationship_room_id|servers to the unsigned section of events * Persist the parent room_id/servers in edge metadata Other events cannot assert the true room_id/servers for the parent event, only make claims to them, hence why this is edge metadata. * guts to pass through room_id/servers * Refactor msc2836 to allow handling from federation * Add JoinedVia to PerformJoin responses * Fix tests; review comments
75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// Package hooks exposes places in Dendrite where custom code can be executed, useful for MSCs.
|
|
// Hooks can only be run in monolith mode.
|
|
package hooks
|
|
|
|
import "sync"
|
|
|
|
const (
|
|
// KindNewEventPersisted is a hook which is called with *gomatrixserverlib.HeaderedEvent
|
|
// It is run when a new event is persisted in the roomserver.
|
|
// Usage:
|
|
// hooks.Attach(hooks.KindNewEventPersisted, func(headeredEvent interface{}) { ... })
|
|
KindNewEventPersisted = "new_event_persisted"
|
|
// KindNewEventReceived is a hook which is called with *gomatrixserverlib.HeaderedEvent
|
|
// It is run before a new event is processed by the roomserver. This hook can be used
|
|
// to modify the event before it is persisted by adding data to `unsigned`.
|
|
// Usage:
|
|
// hooks.Attach(hooks.KindNewEventReceived, func(headeredEvent interface{}) {
|
|
// ev := headeredEvent.(*gomatrixserverlib.HeaderedEvent)
|
|
// _ = ev.SetUnsignedField("key", "val")
|
|
// })
|
|
KindNewEventReceived = "new_event_received"
|
|
)
|
|
|
|
var (
|
|
hookMap = make(map[string][]func(interface{}))
|
|
hookMu = sync.Mutex{}
|
|
enabled = false
|
|
)
|
|
|
|
// Enable all hooks. This may slow down the server slightly. Required for MSCs to work.
|
|
func Enable() {
|
|
enabled = true
|
|
}
|
|
|
|
// Run any hooks
|
|
func Run(kind string, data interface{}) {
|
|
if !enabled {
|
|
return
|
|
}
|
|
cbs := callbacks(kind)
|
|
for _, cb := range cbs {
|
|
cb(data)
|
|
}
|
|
}
|
|
|
|
// Attach a hook
|
|
func Attach(kind string, callback func(interface{})) {
|
|
if !enabled {
|
|
return
|
|
}
|
|
hookMu.Lock()
|
|
defer hookMu.Unlock()
|
|
hookMap[kind] = append(hookMap[kind], callback)
|
|
}
|
|
|
|
func callbacks(kind string) []func(interface{}) {
|
|
hookMu.Lock()
|
|
defer hookMu.Unlock()
|
|
return hookMap[kind]
|
|
}
|