122 lines
2.4 KiB
Go
122 lines
2.4 KiB
Go
// Copyright 2023 LiveKit, Inc.
|
|
//
|
|
// 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 webhook
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/gammazero/deque"
|
|
|
|
"github.com/livekit/protocol/livekit"
|
|
)
|
|
|
|
var (
|
|
errQueueFull = errors.New("queue is full")
|
|
errQueueClosed = errors.New("queue is closed")
|
|
)
|
|
|
|
type item struct {
|
|
ctx context.Context
|
|
queuedAt time.Time
|
|
event *livekit.WebhookEvent
|
|
params *ResourceURLNotifierParams
|
|
}
|
|
|
|
type resourceQueueParams struct {
|
|
MaxDepth int
|
|
|
|
Poster poster
|
|
}
|
|
|
|
type resourceQueue struct {
|
|
params resourceQueueParams
|
|
|
|
mu sync.Mutex
|
|
items deque.Deque[*item]
|
|
cond *sync.Cond
|
|
|
|
closed bool
|
|
drain bool
|
|
}
|
|
|
|
func newResourceQueue(params resourceQueueParams) *resourceQueue {
|
|
r := &resourceQueue{
|
|
params: params,
|
|
}
|
|
r.items.SetBaseCap(int(min(params.MaxDepth, 16)))
|
|
r.cond = sync.NewCond(&r.mu)
|
|
|
|
go r.worker()
|
|
return r
|
|
}
|
|
|
|
func (r *resourceQueue) Stop(force bool) {
|
|
r.mu.Lock()
|
|
defer r.mu.Unlock()
|
|
|
|
if !r.closed {
|
|
r.closed = true
|
|
r.drain = !force
|
|
|
|
r.cond.Broadcast()
|
|
}
|
|
}
|
|
|
|
func (r *resourceQueue) Enqueue(ctx context.Context, whEvent *livekit.WebhookEvent, params *ResourceURLNotifierParams) error {
|
|
return r.EnqueueAt(ctx, time.Now(), whEvent, params)
|
|
}
|
|
|
|
func (r *resourceQueue) EnqueueAt(ctx context.Context, at time.Time, whEvent *livekit.WebhookEvent, params *ResourceURLNotifierParams) error {
|
|
r.mu.Lock()
|
|
defer r.mu.Unlock()
|
|
|
|
if r.closed {
|
|
return errQueueClosed
|
|
}
|
|
|
|
if r.items.Len() >= r.params.MaxDepth {
|
|
return errQueueFull
|
|
}
|
|
|
|
r.items.PushBack(&item{ctx, at, whEvent, params})
|
|
r.cond.Broadcast()
|
|
return nil
|
|
}
|
|
|
|
func (r *resourceQueue) worker() {
|
|
for {
|
|
r.mu.Lock()
|
|
for {
|
|
if r.closed && (!r.drain || r.items.Len() == 0) {
|
|
r.mu.Unlock()
|
|
return
|
|
}
|
|
|
|
if r.items.Len() != 0 {
|
|
break
|
|
}
|
|
r.cond.Wait()
|
|
}
|
|
|
|
item := r.items.PopFront()
|
|
r.mu.Unlock()
|
|
|
|
r.params.Poster.Process(item.ctx, item.queuedAt, item.event, item.params)
|
|
}
|
|
}
|