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refactor(ARCO-212): Introduce batch processor for chain hashes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| package p2p | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "sync" | ||
| "time" | ||
|
|
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| "github.com/libsv/go-p2p/chaincfg/chainhash" | ||
| ) | ||
|
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| // BatchProcessor for chain hashes runs a specified function on a batch of chain hashes in specified intervals or if the batch has reached a specified size | ||
| type BatchProcessor struct { | ||
| fn func([]*chainhash.Hash) | ||
| batchSize int | ||
| runInterval time.Duration | ||
| batch []*chainhash.Hash | ||
| hashChannel chan *chainhash.Hash | ||
| wg *sync.WaitGroup | ||
| cancelAll context.CancelFunc | ||
| ctx context.Context | ||
| } | ||
|
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| func NewBatchProcessor(batchSize int, runInterval time.Duration, fn func(batch []*chainhash.Hash), bufferSize int) (*BatchProcessor, error) { | ||
| if batchSize == 0 { | ||
| return nil, errors.New("batch size must be greater than zero") | ||
| } | ||
|
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| b := &BatchProcessor{ | ||
| fn: fn, | ||
| batchSize: batchSize, | ||
| runInterval: runInterval, | ||
| hashChannel: make(chan *chainhash.Hash, bufferSize), | ||
| wg: &sync.WaitGroup{}, | ||
| } | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| b.ctx = ctx | ||
| b.cancelAll = cancel | ||
|
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| b.start() | ||
|
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| return b, nil | ||
| } | ||
|
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| func (b *BatchProcessor) Put(item *chainhash.Hash) { | ||
| b.hashChannel <- item | ||
| } | ||
|
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| func (b *BatchProcessor) Shutdown() { | ||
| if b.cancelAll != nil { | ||
| b.cancelAll() | ||
| b.wg.Wait() | ||
| } | ||
| } | ||
|
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| func (b *BatchProcessor) runFunction() { | ||
| copyBatch := make([]*chainhash.Hash, len(b.batch)) | ||
|
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| copy(copyBatch, b.batch) | ||
|
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| b.batch = b.batch[:0] // Clear the batch slice without reallocating the underlying memory | ||
|
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| go b.fn(copyBatch) | ||
| } | ||
|
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| func (b *BatchProcessor) start() { | ||
| runTicker := time.NewTicker(b.runInterval) | ||
| b.wg.Add(1) | ||
| go func() { | ||
| defer b.wg.Done() | ||
| for { | ||
| select { | ||
| case <-b.ctx.Done(): | ||
| runTicker.Stop() | ||
| return | ||
| case item := <-b.hashChannel: | ||
| b.batch = append(b.batch, item) | ||
|
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| if len(b.batch) >= b.batchSize { | ||
| b.runFunction() | ||
| } | ||
|
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| case <-runTicker.C: | ||
| if len(b.batch) > 0 { | ||
| b.runFunction() | ||
| } | ||
| } | ||
| } | ||
| }() | ||
| } |
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