feat(plugin): implement golang version of plugin jwt-auth (#743)

Signed-off-by: Ink33 <Ink33@smlk.org>

plugins/wasm-go/extensions/jwt-auth/handler/claims.go

@@ -0,0 +1,33 @@
+// Copyright (c) 2023 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package handler
+
+import (
+	"fmt"
+
+	cfg "github.com/alibaba/higress/plugins/wasm-go/extensions/jwt-auth/config"
+	"github.com/higress-group/proxy-wasm-go-sdk/proxywasm"
+)
+
+func claimsToHeader(claims map[string]any, cth []cfg.ClaimsToHeader) {
+	for i := range cth {
+		if v, ok := claims[cth[i].Claim]; ok {
+			if *cth[i].Override {
+				proxywasm.ReplaceHttpRequestHeader(cth[i].Header, fmt.Sprint(v))
+			}
+			proxywasm.AddHttpRequestHeader(cth[i].Header, fmt.Sprint(v))
+		}
+	}
+}