You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
2.9 KiB
105 lines
2.9 KiB
// Copyright 2019 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package queue
|
|
|
|
import (
|
|
"gitea.com/lunny/levelqueue"
|
|
)
|
|
|
|
// LevelUniqueQueueType is the type for level queue
|
|
const LevelUniqueQueueType Type = "unique-level"
|
|
|
|
// LevelUniqueQueueConfiguration is the configuration for a LevelUniqueQueue
|
|
type LevelUniqueQueueConfiguration struct {
|
|
ByteFIFOQueueConfiguration
|
|
DataDir string
|
|
}
|
|
|
|
// LevelUniqueQueue implements a disk library queue
|
|
type LevelUniqueQueue struct {
|
|
*ByteFIFOUniqueQueue
|
|
}
|
|
|
|
// NewLevelUniqueQueue creates a ledis local queue
|
|
//
|
|
// Please note that this Queue does not guarantee that a particular
|
|
// task cannot be processed twice or more at the same time. Uniqueness is
|
|
// only guaranteed whilst the task is waiting in the queue.
|
|
func NewLevelUniqueQueue(handle HandlerFunc, cfg, exemplar interface{}) (Queue, error) {
|
|
configInterface, err := toConfig(LevelUniqueQueueConfiguration{}, cfg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
config := configInterface.(LevelUniqueQueueConfiguration)
|
|
|
|
byteFIFO, err := NewLevelUniqueQueueByteFIFO(config.DataDir)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
byteFIFOQueue, err := NewByteFIFOUniqueQueue(LevelUniqueQueueType, byteFIFO, handle, config.ByteFIFOQueueConfiguration, exemplar)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
queue := &LevelUniqueQueue{
|
|
ByteFIFOUniqueQueue: byteFIFOQueue,
|
|
}
|
|
queue.qid = GetManager().Add(queue, LevelUniqueQueueType, config, exemplar)
|
|
return queue, nil
|
|
}
|
|
|
|
var _ (UniqueByteFIFO) = &LevelUniqueQueueByteFIFO{}
|
|
|
|
// LevelUniqueQueueByteFIFO represents a ByteFIFO formed from a LevelUniqueQueue
|
|
type LevelUniqueQueueByteFIFO struct {
|
|
internal *levelqueue.UniqueQueue
|
|
}
|
|
|
|
// NewLevelUniqueQueueByteFIFO creates a new ByteFIFO formed from a LevelUniqueQueue
|
|
func NewLevelUniqueQueueByteFIFO(dataDir string) (*LevelUniqueQueueByteFIFO, error) {
|
|
internal, err := levelqueue.OpenUnique(dataDir)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &LevelUniqueQueueByteFIFO{
|
|
internal: internal,
|
|
}, nil
|
|
}
|
|
|
|
// PushFunc pushes data to the end of the fifo and calls the callback if it is added
|
|
func (fifo *LevelUniqueQueueByteFIFO) PushFunc(data []byte, fn func() error) error {
|
|
return fifo.internal.LPushFunc(data, fn)
|
|
}
|
|
|
|
// Pop pops data from the start of the fifo
|
|
func (fifo *LevelUniqueQueueByteFIFO) Pop() ([]byte, error) {
|
|
data, err := fifo.internal.RPop()
|
|
if err != nil && err != levelqueue.ErrNotFound {
|
|
return nil, err
|
|
}
|
|
return data, nil
|
|
}
|
|
|
|
// Len returns the length of the fifo
|
|
func (fifo *LevelUniqueQueueByteFIFO) Len() int64 {
|
|
return fifo.internal.Len()
|
|
}
|
|
|
|
// Has returns whether the fifo contains this data
|
|
func (fifo *LevelUniqueQueueByteFIFO) Has(data []byte) (bool, error) {
|
|
return fifo.internal.Has(data)
|
|
}
|
|
|
|
// Close this fifo
|
|
func (fifo *LevelUniqueQueueByteFIFO) Close() error {
|
|
return fifo.internal.Close()
|
|
}
|
|
|
|
func init() {
|
|
queuesMap[LevelUniqueQueueType] = NewLevelUniqueQueue
|
|
}
|