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sequential_queue.go
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sequential_queue.go
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// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package replication
import (
"sync"
"github.com/dgryski/go-farm"
"go.temporal.io/server/common/collection"
"go.temporal.io/server/common/definition"
ctasks "go.temporal.io/server/common/tasks"
)
type (
SequentialTaskQueue struct {
id interface{}
sync.Mutex
taskQueue collection.Queue[TrackableExecutableTask]
}
)
func NewSequentialTaskQueue(task TrackableExecutableTask) ctasks.SequentialTaskQueue[TrackableExecutableTask] {
return &SequentialTaskQueue{
id: task.QueueID(),
taskQueue: collection.NewPriorityQueue[TrackableExecutableTask](
SequentialTaskQueueCompareLess,
),
}
}
func (q *SequentialTaskQueue) ID() interface{} {
return q.id
}
func (q *SequentialTaskQueue) Peek() TrackableExecutableTask {
q.Lock()
defer q.Unlock()
return q.taskQueue.Peek()
}
func (q *SequentialTaskQueue) Add(task TrackableExecutableTask) {
q.Lock()
defer q.Unlock()
q.taskQueue.Add(task)
}
func (q *SequentialTaskQueue) Remove() TrackableExecutableTask {
q.Lock()
defer q.Unlock()
return q.taskQueue.Remove().(TrackableExecutableTask)
}
func (q *SequentialTaskQueue) IsEmpty() bool {
q.Lock()
defer q.Unlock()
return q.taskQueue.IsEmpty()
}
func (q *SequentialTaskQueue) Len() int {
q.Lock()
defer q.Unlock()
return q.taskQueue.Len()
}
func SequentialTaskQueueCompareLess(this TrackableExecutableTask, that TrackableExecutableTask) bool {
return this.TaskID() < that.TaskID()
}
func WorkflowKeyHashFn(
item interface{},
) uint32 {
workflowKey, ok := item.(definition.WorkflowKey)
if !ok {
return 0
}
idBytes := []byte(workflowKey.NamespaceID + "_" + workflowKey.WorkflowID + "_" + workflowKey.RunID)
return farm.Fingerprint32(idBytes)
}