支持brotli和deflate压缩

internal/caches/writer_compression.go

@@ -0,0 +1,76 @@
+package caches
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/compressions"
+)
+
+type compressionWriter struct {
+	rawWriter Writer
+	writer    compressions.Writer
+	key       string
+	expiredAt int64
+}
+
+func NewCompressionWriter(gw Writer, cpWriter compressions.Writer, key string, expiredAt int64) Writer {
+	return &compressionWriter{
+		rawWriter: gw,
+		writer:    cpWriter,
+		key:       key,
+		expiredAt: expiredAt,
+	}
+}
+
+func (this *compressionWriter) WriteHeader(data []byte) (n int, err error) {
+	return this.writer.Write(data)
+}
+
+// WriteHeaderLength 写入Header长度数据
+func (this *compressionWriter) WriteHeaderLength(headerLength int) error {
+	return nil
+}
+
+// WriteBodyLength 写入Body长度数据
+func (this *compressionWriter) WriteBodyLength(bodyLength int64) error {
+	return nil
+}
+
+func (this *compressionWriter) Write(data []byte) (n int, err error) {
+	return this.writer.Write(data)
+}
+
+func (this *compressionWriter) Close() error {
+	err := this.writer.Close()
+	if err != nil {
+		return err
+	}
+	return this.rawWriter.Close()
+}
+
+func (this *compressionWriter) Discard() error {
+	err := this.writer.Close()
+	if err != nil {
+		return err
+	}
+	return this.rawWriter.Discard()
+}
+
+func (this *compressionWriter) Key() string {
+	return this.key
+}
+
+func (this *compressionWriter) ExpiredAt() int64 {
+	return this.expiredAt
+}
+
+func (this *compressionWriter) HeaderSize() int64 {
+	return this.rawWriter.HeaderSize()
+}
+
+func (this *compressionWriter) BodySize() int64 {
+	return this.rawWriter.BodySize()
+}
+
+// ItemType 内容类型
+func (this *compressionWriter) ItemType() ItemType {
+	return this.rawWriter.ItemType()
+}