add service mesh controller

add service mesh metrics

remove unused circle yaml

fix travis misconfiguration

fix travis misconfiguration

fix travis misconfiguration

vendor/github.com/gregjones/httpcache/httpcache.go

@@ -10,7 +10,6 @@ import (
 	"bufio"
 	"bytes"
 	"errors"
-	"fmt"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -41,7 +40,11 @@ type Cache interface {
 
 // cacheKey returns the cache key for req.
 func cacheKey(req *http.Request) string {
-	return req.URL.String()
+	if req.Method == http.MethodGet {
+		return req.URL.String()
+	} else {
+		return req.Method + " " + req.URL.String()
+	}
 }
 
 // CachedResponse returns the cached http.Response for req if present, and nil
@@ -189,16 +192,11 @@ func (t *Transport) RoundTrip(req *http.Request) (resp *http.Response, err error
 			for _, header := range endToEndHeaders {
 				cachedResp.Header[header] = resp.Header[header]
 			}
-			cachedResp.Status = fmt.Sprintf("%d %s", http.StatusOK, http.StatusText(http.StatusOK))
-			cachedResp.StatusCode = http.StatusOK
-
 			resp = cachedResp
 		} else if (err != nil || (cachedResp != nil && resp.StatusCode >= 500)) &&
 			req.Method == "GET" && canStaleOnError(cachedResp.Header, req.Header) {
 			// In case of transport failure and stale-if-error activated, returns cached content
 			// when available
-			cachedResp.Status = fmt.Sprintf("%d %s", http.StatusOK, http.StatusText(http.StatusOK))
-			cachedResp.StatusCode = http.StatusOK
 			return cachedResp, nil
 		} else {
 			if err != nil || resp.StatusCode != http.StatusOK {
@@ -418,14 +416,14 @@ func canStaleOnError(respHeaders, reqHeaders http.Header) bool {
 func getEndToEndHeaders(respHeaders http.Header) []string {
 	// These headers are always hop-by-hop
 	hopByHopHeaders := map[string]struct{}{
-		"Connection":          struct{}{},
-		"Keep-Alive":          struct{}{},
-		"Proxy-Authenticate":  struct{}{},
-		"Proxy-Authorization": struct{}{},
-		"Te":                struct{}{},
-		"Trailers":          struct{}{},
-		"Transfer-Encoding": struct{}{},
-		"Upgrade":           struct{}{},
+		"Connection":          {},
+		"Keep-Alive":          {},
+		"Proxy-Authenticate":  {},
+		"Proxy-Authorization": {},
+		"Te":                  {},
+		"Trailers":            {},
+		"Transfer-Encoding":   {},
+		"Upgrade":             {},
 	}
 
 	for _, extra := range strings.Split(respHeaders.Get("connection"), ",") {
@@ -435,7 +433,7 @@ func getEndToEndHeaders(respHeaders http.Header) []string {
 		}
 	}
 	endToEndHeaders := []string{}
-	for respHeader, _ := range respHeaders {
+	for respHeader := range respHeaders {
 		if _, ok := hopByHopHeaders[respHeader]; !ok {
 			endToEndHeaders = append(endToEndHeaders, respHeader)
 		}