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go-zero/gateway/internal/headerprocessor.go

31 lines
571 B
Go

package internal
import (
"fmt"
"net/http"
"strings"
)
const (
metadataHeaderPrefix = "Grpc-Metadata-"
metadataPrefix = "gateway-"
)
// ProcessHeaders builds the headers for the gateway from HTTP headers.
func ProcessHeaders(header http.Header) []string {
var headers []string
for k, v := range header {
if !strings.HasPrefix(k, metadataHeaderPrefix) {
continue
}
key := fmt.Sprintf("%s%s", metadataPrefix, strings.TrimPrefix(k, metadataHeaderPrefix))
for _, vv := range v {
headers = append(headers, key+":"+vv)
}
}
return headers
}