65 lines
2 KiB
Go
65 lines
2 KiB
Go
// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package types
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import (
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"sync"
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"github.com/matrix-org/dendrite/common/config"
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)
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const (
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// AppServiceDeviceID is the AS dummy device ID
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AppServiceDeviceID = "AS_Device"
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)
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// ApplicationServiceWorkerState is a type that couples an application service,
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// a lockable condition as well as some other state variables, allowing the
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// roomserver to notify appservice workers when there are events ready to send
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// externally to application services.
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type ApplicationServiceWorkerState struct {
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AppService config.ApplicationService
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Cond *sync.Cond
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// Events ready to be sent
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EventsReady bool
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// Backoff exponent (2^x secs). Max 6, aka 64s.
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Backoff int
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}
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// NotifyNewEvents wakes up all waiting goroutines, notifying that events remain
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// in the event queue for this application service worker.
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func (a *ApplicationServiceWorkerState) NotifyNewEvents() {
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a.Cond.L.Lock()
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a.EventsReady = true
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a.Cond.Broadcast()
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a.Cond.L.Unlock()
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}
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// FinishEventProcessing marks all events of this worker as being sent to the
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// application service.
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func (a *ApplicationServiceWorkerState) FinishEventProcessing() {
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a.Cond.L.Lock()
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a.EventsReady = false
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a.Cond.L.Unlock()
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}
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// WaitForNewEvents causes the calling goroutine to wait on the worker state's
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// condition for a broadcast or similar wakeup, if there are no events ready.
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func (a *ApplicationServiceWorkerState) WaitForNewEvents() {
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a.Cond.L.Lock()
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if !a.EventsReady {
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a.Cond.Wait()
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}
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a.Cond.L.Unlock()
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}
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