git subrepo clone (merge) https://github.com/kubernetes-incubator/metrics-server.git metrics-server
subrepo:
subdir: "metrics-server"
merged: "92d8412"
upstream:
origin: "https://github.com/kubernetes-incubator/metrics-server.git"
branch: "master"
commit: "92d8412"
git-subrepo:
version: "0.4.0"
origin: "???"
commit: "???"
diff --git a/metrics-server/vendor/github.com/emicklei/go-restful/compress.go b/metrics-server/vendor/github.com/emicklei/go-restful/compress.go
new file mode 100644
index 0000000..220b377
--- /dev/null
+++ b/metrics-server/vendor/github.com/emicklei/go-restful/compress.go
@@ -0,0 +1,123 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+ "bufio"
+ "compress/gzip"
+ "compress/zlib"
+ "errors"
+ "io"
+ "net"
+ "net/http"
+ "strings"
+)
+
+// OBSOLETE : use restful.DefaultContainer.EnableContentEncoding(true) to change this setting.
+var EnableContentEncoding = false
+
+// CompressingResponseWriter is a http.ResponseWriter that can perform content encoding (gzip and zlib)
+type CompressingResponseWriter struct {
+ writer http.ResponseWriter
+ compressor io.WriteCloser
+ encoding string
+}
+
+// Header is part of http.ResponseWriter interface
+func (c *CompressingResponseWriter) Header() http.Header {
+ return c.writer.Header()
+}
+
+// WriteHeader is part of http.ResponseWriter interface
+func (c *CompressingResponseWriter) WriteHeader(status int) {
+ c.writer.WriteHeader(status)
+}
+
+// Write is part of http.ResponseWriter interface
+// It is passed through the compressor
+func (c *CompressingResponseWriter) Write(bytes []byte) (int, error) {
+ if c.isCompressorClosed() {
+ return -1, errors.New("Compressing error: tried to write data using closed compressor")
+ }
+ return c.compressor.Write(bytes)
+}
+
+// CloseNotify is part of http.CloseNotifier interface
+func (c *CompressingResponseWriter) CloseNotify() <-chan bool {
+ return c.writer.(http.CloseNotifier).CloseNotify()
+}
+
+// Close the underlying compressor
+func (c *CompressingResponseWriter) Close() error {
+ if c.isCompressorClosed() {
+ return errors.New("Compressing error: tried to close already closed compressor")
+ }
+
+ c.compressor.Close()
+ if ENCODING_GZIP == c.encoding {
+ currentCompressorProvider.ReleaseGzipWriter(c.compressor.(*gzip.Writer))
+ }
+ if ENCODING_DEFLATE == c.encoding {
+ currentCompressorProvider.ReleaseZlibWriter(c.compressor.(*zlib.Writer))
+ }
+ // gc hint needed?
+ c.compressor = nil
+ return nil
+}
+
+func (c *CompressingResponseWriter) isCompressorClosed() bool {
+ return nil == c.compressor
+}
+
+// Hijack implements the Hijacker interface
+// This is especially useful when combining Container.EnabledContentEncoding
+// in combination with websockets (for instance gorilla/websocket)
+func (c *CompressingResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+ hijacker, ok := c.writer.(http.Hijacker)
+ if !ok {
+ return nil, nil, errors.New("ResponseWriter doesn't support Hijacker interface")
+ }
+ return hijacker.Hijack()
+}
+
+// WantsCompressedResponse reads the Accept-Encoding header to see if and which encoding is requested.
+func wantsCompressedResponse(httpRequest *http.Request) (bool, string) {
+ header := httpRequest.Header.Get(HEADER_AcceptEncoding)
+ gi := strings.Index(header, ENCODING_GZIP)
+ zi := strings.Index(header, ENCODING_DEFLATE)
+ // use in order of appearance
+ if gi == -1 {
+ return zi != -1, ENCODING_DEFLATE
+ } else if zi == -1 {
+ return gi != -1, ENCODING_GZIP
+ } else {
+ if gi < zi {
+ return true, ENCODING_GZIP
+ }
+ return true, ENCODING_DEFLATE
+ }
+}
+
+// NewCompressingResponseWriter create a CompressingResponseWriter for a known encoding = {gzip,deflate}
+func NewCompressingResponseWriter(httpWriter http.ResponseWriter, encoding string) (*CompressingResponseWriter, error) {
+ httpWriter.Header().Set(HEADER_ContentEncoding, encoding)
+ c := new(CompressingResponseWriter)
+ c.writer = httpWriter
+ var err error
+ if ENCODING_GZIP == encoding {
+ w := currentCompressorProvider.AcquireGzipWriter()
+ w.Reset(httpWriter)
+ c.compressor = w
+ c.encoding = ENCODING_GZIP
+ } else if ENCODING_DEFLATE == encoding {
+ w := currentCompressorProvider.AcquireZlibWriter()
+ w.Reset(httpWriter)
+ c.compressor = w
+ c.encoding = ENCODING_DEFLATE
+ } else {
+ return nil, errors.New("Unknown encoding:" + encoding)
+ }
+ return c, err
+}