unify metadata header key

pkg/net/http/blademaster/client.go

@@ -253,9 +253,6 @@ func (client *Client) Raw(c context.Context, req *xhttp.Request, v ...string) (b
 	setTimeout(req, timeout)
 	req = req.WithContext(c)
 	setCaller(req)
-	if color := metadata.String(c, metadata.Color); color != "" {
-		setColor(req, color)
-	}
 	metadata.Range(c,
 		func(key string, value interface{}) {
 			setMetadata(req, key, value)

pkg/net/http/blademaster/metadata.go

@@ -9,7 +9,7 @@ import (
 
 	"github.com/bilibili/kratos/pkg/conf/env"
 	"github.com/bilibili/kratos/pkg/log"
-	criticalityPkg "github.com/bilibili/kratos/pkg/net/criticality"
+	"github.com/bilibili/kratos/pkg/net/criticality"
 	"github.com/bilibili/kratos/pkg/net/metadata"
 
 	"github.com/pkg/errors"
@@ -18,22 +18,50 @@ import (
 const (
 	// http head
 	_httpHeaderUser         = "x1-bmspy-user"
-	_httpHeaderColor        = "x1-bmspy-color"
 	_httpHeaderTimeout      = "x1-bmspy-timeout"
-	_httpHeaderMirror       = "x1-bmspy-mirror"
 	_httpHeaderRemoteIP     = "x-backend-bm-real-ip"
 	_httpHeaderRemoteIPPort = "x-backend-bm-real-ipport"
-	_httpHeaderCriticality  = "x-backend-bili-criticality"
 )
 
 const (
-	_httpHeaderMetadata = "x-bili-metadata-"
+	_httpHeaderMetadata = "x-bm-metadata-"
 )
 
-var _outgoingHeader = map[string]string{
+var _parser = map[string]func(string) interface{}{
-	metadata.Color:       _httpHeaderColor,
+	"mirror": func(mirrorStr string) interface{} {
-	metadata.Criticality: _httpHeaderCriticality,
+		if mirrorStr == "" {
-	metadata.Mirror:      _httpHeaderMirror,
+			return false
+		}
+		val, err := strconv.ParseBool(mirrorStr)
+		if err != nil {
+			log.Warn("blademaster: failed to parse mirror: %+v", errors.Wrap(err, mirrorStr))
+			return false
+		}
+		if !val {
+			log.Warn("blademaster: request mirrorStr value :%s is false", mirrorStr)
+		}
+		return val
+	},
+	"criticality": func(in string) interface{} {
+		if crtl := criticality.Criticality(in); crtl != criticality.EmptyCriticality {
+			return string(crtl)
+		}
+		return string(criticality.Critical)
+	},
+}
+
+func parseMetadataTo(req *http.Request, to metadata.MD) {
+	for rawKey := range req.Header {
+		key := strings.ReplaceAll(strings.TrimLeft(strings.ToLower(rawKey), _httpHeaderMetadata), "-", "_")
+		rawValue := req.Header.Get(rawKey)
+		var value interface{} = rawValue
+		parser, ok := _parser[key]
+		if ok {
+			value = parser(rawValue)
+		}
+		to[key] = value
+	}
+	return
 }
 
 func setMetadata(req *http.Request, key string, value interface{}) {
@@ -45,47 +73,11 @@ func setMetadata(req *http.Request, key string, value interface{}) {
 	req.Header.Set(header, strV)
 }
 
-// mirror return true if x-bmspy-mirror in http header and its value is 1 or true.
-func mirror(req *http.Request) bool {
-	mirrorStr := req.Header.Get(_httpHeaderMirror)
-	if mirrorStr == "" {
-		return false
-	}
-	val, err := strconv.ParseBool(mirrorStr)
-	if err != nil {
-		log.Warn("blademaster: failed to parse mirror: %+v", errors.Wrap(err, mirrorStr))
-		return false
-	}
-	if !val {
-		log.Warn("blademaster: request mirrorStr value :%s is false", mirrorStr)
-	}
-	return val
-}
-
 // setCaller set caller into http request.
 func setCaller(req *http.Request) {
 	req.Header.Set(_httpHeaderUser, env.AppID)
 }
 
-// caller get caller from http request.
-func caller(req *http.Request) string {
-	return req.Header.Get(_httpHeaderUser)
-}
-
-// setColor set color into http request.
-func setColor(req *http.Request, color string) {
-	req.Header.Set(_httpHeaderColor, color)
-}
-
-// color get color from http request.
-func color(req *http.Request) string {
-	c := req.Header.Get(_httpHeaderColor)
-	if c == "" {
-		c = env.Color
-	}
-	return c
-}
-
 // setTimeout set timeout into http request.
 func setTimeout(req *http.Request, timeout time.Duration) {
 	td := int64(timeout / time.Millisecond)
@@ -102,12 +94,6 @@ func timeout(req *http.Request) time.Duration {
 	return time.Duration(timeout) * time.Millisecond
 }
 
-// criticality get criticality from http request.
-func criticality(req *http.Request) criticalityPkg.Criticality {
-	raw := req.Header.Get(_httpHeaderCriticality)
-	return criticalityPkg.Parse(raw)
-}
-
 // remoteIP implements a best effort algorithm to return the real client IP, it parses
 // x-backend-bm-real-ip or X-Real-IP or X-Forwarded-For in order to work properly with reverse-proxies such us: nginx or haproxy.
 // Use X-Forwarded-For before X-Real-Ip as nginx uses X-Real-Ip with the proxy's IP.

pkg/net/http/blademaster/server.go

@@ -15,7 +15,7 @@ import (
 
 	"github.com/bilibili/kratos/pkg/conf/dsn"
 	"github.com/bilibili/kratos/pkg/log"
-	criticalityPkg "github.com/bilibili/kratos/pkg/net/criticality"
+	"github.com/bilibili/kratos/pkg/net/criticality"
 	"github.com/bilibili/kratos/pkg/net/ip"
 	"github.com/bilibili/kratos/pkg/net/metadata"
 	"github.com/bilibili/kratos/pkg/stat"
@@ -262,16 +262,11 @@ func (engine *Engine) handleContext(c *Context) {
 		tm = ctm
 	}
 	md := metadata.MD{
-		metadata.Color:       color(req),
 		metadata.RemoteIP:    remoteIP(req),
 		metadata.RemotePort:  remotePort(req),
-		metadata.Caller:      caller(req),
+		metadata.Criticality: string(criticality.Critical),
-		metadata.Mirror:      mirror(req),
-		metadata.Criticality: string(criticalityPkg.Critical),
-	}
-	if crtl := criticality(req); crtl != criticalityPkg.EmptyCriticality {
-		md[metadata.Criticality] = string(crtl)
 	}
+	parseMetadataTo(req, md)
 	ctx := metadata.NewContext(context.Background(), md)
 	if tm > 0 {
 		c.Context, cancel = context.WithTimeout(ctx, tm)

pkg/net/http/blademaster/server_test.go

@@ -87,7 +87,7 @@ func TestCriticality(t *testing.T) {
 	for _, testCase := range tests {
 		req, err := http.NewRequest("GET", uri(SockAddr, testCase.path), nil)
 		assert.NoError(t, err)
-		req.Header.Set(_httpHeaderCriticality, string(testCase.crtl))
+		req.Header.Set("x-bm-metadata-criticality", string(testCase.crtl))
 		resp, err := client.Do(req)
 		assert.NoError(t, err)
 		defer resp.Body.Close()
@@ -126,7 +126,7 @@ func TestNoneCriticality(t *testing.T) {
 	for _, testCase := range tests {
 		req, err := http.NewRequest("GET", uri(SockAddr, testCase.path), nil)
 		assert.NoError(t, err)
-		req.Header.Set(_httpHeaderCriticality, string(testCase.crtl))
+		req.Header.Set("x-bm-metadata-criticality", string(testCase.crtl))
 		resp, err := client.Do(req)
 		assert.NoError(t, err)
 		defer resp.Body.Close()