[VOL-1386] This commit add "dep" as the package management tool
for voltha-go.
Change-Id: I52bc4911dd00a441756ec7c30f46d45091f3f90e
diff --git a/vendor/github.com/Shopify/sarama/decompress.go b/vendor/github.com/Shopify/sarama/decompress.go
new file mode 100644
index 0000000..eaccbfc
--- /dev/null
+++ b/vendor/github.com/Shopify/sarama/decompress.go
@@ -0,0 +1,63 @@
+package sarama
+
+import (
+ "bytes"
+ "compress/gzip"
+ "fmt"
+ "io/ioutil"
+ "sync"
+
+ "github.com/eapache/go-xerial-snappy"
+ "github.com/pierrec/lz4"
+)
+
+var (
+ lz4ReaderPool = sync.Pool{
+ New: func() interface{} {
+ return lz4.NewReader(nil)
+ },
+ }
+
+ gzipReaderPool sync.Pool
+)
+
+func decompress(cc CompressionCodec, data []byte) ([]byte, error) {
+ switch cc {
+ case CompressionNone:
+ return data, nil
+ case CompressionGZIP:
+ var (
+ err error
+ reader *gzip.Reader
+ readerIntf = gzipReaderPool.Get()
+ )
+ if readerIntf != nil {
+ reader = readerIntf.(*gzip.Reader)
+ } else {
+ reader, err = gzip.NewReader(bytes.NewReader(data))
+ if err != nil {
+ return nil, err
+ }
+ }
+
+ defer gzipReaderPool.Put(reader)
+
+ if err := reader.Reset(bytes.NewReader(data)); err != nil {
+ return nil, err
+ }
+
+ return ioutil.ReadAll(reader)
+ case CompressionSnappy:
+ return snappy.Decode(data)
+ case CompressionLZ4:
+ reader := lz4ReaderPool.Get().(*lz4.Reader)
+ defer lz4ReaderPool.Put(reader)
+
+ reader.Reset(bytes.NewReader(data))
+ return ioutil.ReadAll(reader)
+ case CompressionZSTD:
+ return zstdDecompress(nil, data)
+ default:
+ return nil, PacketDecodingError{fmt.Sprintf("invalid compression specified (%d)", cc)}
+ }
+}