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			105 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			105 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package issues
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import (
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	"encoding/json"
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	"time"
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	"code.gitea.io/gitea/modules/log"
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	"github.com/lunny/levelqueue"
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)
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var (
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	_ Queue = &LevelQueue{}
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)
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// LevelQueue implements a disk library queue
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type LevelQueue struct {
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	indexer     Indexer
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	queue       *levelqueue.Queue
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	batchNumber int
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}
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// NewLevelQueue creates a ledis local queue
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func NewLevelQueue(indexer Indexer, dataDir string, batchNumber int) (*LevelQueue, error) {
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	queue, err := levelqueue.Open(dataDir)
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	if err != nil {
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		return nil, err
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	}
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	return &LevelQueue{
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		indexer:     indexer,
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		queue:       queue,
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		batchNumber: batchNumber,
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	}, nil
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}
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// Run starts to run the queue
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func (l *LevelQueue) Run() error {
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	var i int
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	var datas = make([]*IndexerData, 0, l.batchNumber)
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	for {
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		i++
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		if len(datas) > l.batchNumber || (len(datas) > 0 && i > 3) {
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			_ = l.indexer.Index(datas)
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			datas = make([]*IndexerData, 0, l.batchNumber)
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			i = 0
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			continue
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		}
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		bs, err := l.queue.RPop()
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		if err != nil {
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			if err != levelqueue.ErrNotFound {
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				log.Error("RPop: %v", err)
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			}
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			time.Sleep(time.Millisecond * 100)
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			continue
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		}
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		if len(bs) == 0 {
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			time.Sleep(time.Millisecond * 100)
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			continue
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		}
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		var data IndexerData
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		err = json.Unmarshal(bs, &data)
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		if err != nil {
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			log.Error("Unmarshal: %v", err)
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			time.Sleep(time.Millisecond * 100)
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			continue
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		}
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		log.Trace("LevelQueue: task found: %#v", data)
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		if data.IsDelete {
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			if data.ID > 0 {
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				if err = l.indexer.Delete(data.ID); err != nil {
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					log.Error("indexer.Delete: %v", err)
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				}
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			} else if len(data.IDs) > 0 {
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				if err = l.indexer.Delete(data.IDs...); err != nil {
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					log.Error("indexer.Delete: %v", err)
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				}
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			}
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			time.Sleep(time.Millisecond * 10)
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			continue
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		}
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		datas = append(datas, &data)
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		time.Sleep(time.Millisecond * 10)
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	}
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}
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// Push will push the indexer data to queue
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func (l *LevelQueue) Push(data *IndexerData) error {
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	bs, err := json.Marshal(data)
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	if err != nil {
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		return err
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	}
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	return l.queue.LPush(bs)
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}
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