Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/inputs/kinesis_consumer/encoding.go

@@ -0,0 +1,45 @@
+package kinesis_consumer
+
+import (
+	"bytes"
+	"compress/gzip"
+	"compress/zlib"
+	"fmt"
+	"io"
+)
+
+type decodingFunc func([]byte) ([]byte, error)
+
+func processGzip(data []byte) ([]byte, error) {
+	zipData, err := gzip.NewReader(bytes.NewReader(data))
+	if err != nil {
+		return nil, err
+	}
+	defer zipData.Close()
+	return io.ReadAll(zipData)
+}
+
+func processZlib(data []byte) ([]byte, error) {
+	zlibData, err := zlib.NewReader(bytes.NewReader(data))
+	if err != nil {
+		return nil, err
+	}
+	defer zlibData.Close()
+	return io.ReadAll(zlibData)
+}
+
+func processNoOp(data []byte) ([]byte, error) {
+	return data, nil
+}
+
+func getDecodingFunc(encoding string) (decodingFunc, error) {
+	switch encoding {
+	case "gzip":
+		return processGzip, nil
+	case "zlib":
+		return processZlib, nil
+	case "none", "identity", "":
+		return processNoOp, nil
+	}
+	return nil, fmt.Errorf("unknown content encoding %q", encoding)
+}