pkg/xds/envoy/listeners/v3/http_router_configuer.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_listener "github.com/envoyproxy/go-control-plane/envoy/config/listener/v3"
	envoy_router "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/router/v3"
	envoy_hcm "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/http_connection_manager/v3"
)

import (
	util_proto "github.com/apache/dubbo-kubernetes/pkg/util/proto"
)

// HTTPRouterStartChildSpanRouter configures the router to start child spans.
type HTTPRouterStartChildSpanRouter struct{}

var _ FilterChainConfigurer = &HTTPRouterStartChildSpanRouter{}

func (c *HTTPRouterStartChildSpanRouter) Configure(filterChain *envoy_listener.FilterChain) error {
	return UpdateHTTPConnectionManager(filterChain, func(hcm *envoy_hcm.HttpConnectionManager) error {
		typedConfig, err := util_proto.MarshalAnyDeterministic(&envoy_router.Router{
			StartChildSpan: true,
		})
		if err != nil {
			return err
		}
		router := &envoy_hcm.HttpFilter{
			Name: "envoy.filters.http.router",
			ConfigType: &envoy_hcm.HttpFilter_TypedConfig{
				TypedConfig: typedConfig,
			},
		}
		hcm.HttpFilters = append(hcm.HttpFilters, router)
		return nil
	})
}