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@ -17,7 +17,6 @@ package msggateway
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import (
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"bytes"
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"compress/gzip"
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"errors"
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"io"
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"sync"
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@ -46,12 +45,15 @@ func NewGzipCompressor() *GzipCompressor {
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func (g *GzipCompressor) Compress(rawData []byte) ([]byte, error) {
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gzipBuffer := bytes.Buffer{}
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gz := gzip.NewWriter(&gzipBuffer)
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if _, err := gz.Write(rawData); err != nil {
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return nil, errs.Wrap(err)
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return nil, errs.Wrap(err, "GzipCompressor.Compress: writing to gzip writer failed")
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}
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if err := gz.Close(); err != nil {
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return nil, errs.Wrap(err)
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return nil, errs.Wrap(err, "GzipCompressor.Compress: closing gzip writer failed")
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}
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return gzipBuffer.Bytes(), nil
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}
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@ -63,10 +65,10 @@ func (g *GzipCompressor) CompressWithPool(rawData []byte) ([]byte, error) {
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gz.Reset(&gzipBuffer)
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if _, err := gz.Write(rawData); err != nil {
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return nil, errs.Wrap(err)
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return nil, errs.Wrap(err, "GzipCompressor.CompressWithPool: error writing data")
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}
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if err := gz.Close(); err != nil {
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return nil, errs.Wrap(err)
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return nil, errs.Wrap(err, "GzipCompressor.CompressWithPool: error closing gzip writer")
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}
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return gzipBuffer.Bytes(), nil
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}
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@ -75,32 +77,36 @@ func (g *GzipCompressor) DeCompress(compressedData []byte) ([]byte, error) {
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buff := bytes.NewBuffer(compressedData)
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reader, err := gzip.NewReader(buff)
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if err != nil {
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return nil, errs.Wrap(err, "NewReader failed")
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return nil, errs.Wrap(err, "GzipCompressor.DeCompress: NewReader creation failed")
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}
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compressedData, err = io.ReadAll(reader)
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decompressedData, err := io.ReadAll(reader)
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if err != nil {
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return nil, errs.Wrap(err, "ReadAll failed")
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return nil, errs.Wrap(err, "GzipCompressor.DeCompress: reading from gzip reader failed")
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}
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_ = reader.Close()
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return compressedData, nil
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if err = reader.Close(); err != nil {
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// Even if closing the reader fails, we've successfully read the data,
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// so we return the decompressed data and an error indicating the close failure.
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return decompressedData, errs.Wrap(err, "GzipCompressor.DeCompress: closing gzip reader failed")
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}
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return decompressedData, nil
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}
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func (g *GzipCompressor) DecompressWithPool(compressedData []byte) ([]byte, error) {
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reader := gzipReaderPool.Get().(*gzip.Reader)
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if reader == nil {
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return nil, errs.Wrap(errors.New("NewReader failed"))
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}
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defer gzipReaderPool.Put(reader)
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err := reader.Reset(bytes.NewReader(compressedData))
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if err != nil {
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return nil, errs.Wrap(err, "NewReader failed")
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return nil, errs.Wrap(err, "GzipCompressor.DecompressWithPool: resetting gzip reader failed")
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}
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compressedData, err = io.ReadAll(reader)
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decompressedData, err := io.ReadAll(reader)
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if err != nil {
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return nil, errs.Wrap(err, "ReadAll failed")
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return nil, errs.Wrap(err, "GzipCompressor.DecompressWithPool: reading from pooled gzip reader failed")
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}
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if err = reader.Close(); err != nil {
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// Similar to DeCompress, return the data and error for close failure.
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return decompressedData, errs.Wrap(err, "GzipCompressor.DecompressWithPool: closing pooled gzip reader failed")
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}
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_ = reader.Close()
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return compressedData, nil
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return decompressedData, nil
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}
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