pkg/xds/envoy/listeners/v3/tags_metadata.go

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 v3

import (
	envoy_core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	envoy_api "github.com/envoyproxy/go-control-plane/envoy/config/listener/v3"

	"google.golang.org/protobuf/types/known/structpb"
)

import (
	envoy_metadata "github.com/apache/dubbo-kubernetes/pkg/xds/envoy/metadata/v3"
)

type TagsMetadataConfigurer struct {
	Tags map[string]string
}

func (c *TagsMetadataConfigurer) Configure(l *envoy_api.Listener) error {
	if l.Metadata == nil {
		l.Metadata = &envoy_core.Metadata{}
	}
	if l.Metadata.FilterMetadata == nil {
		l.Metadata.FilterMetadata = map[string]*structpb.Struct{}
	}

	l.Metadata.FilterMetadata[envoy_metadata.TagsKey] = &structpb.Struct{
		Fields: envoy_metadata.MetadataFields(c.Tags),
	}
	return nil
}