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stats.go
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stats.go
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// Copyright Project Contour Authors
// 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 envoy
import (
v2 "github.com/envoyproxy/go-control-plane/envoy/api/v2"
envoy_api_v2_listener "github.com/envoyproxy/go-control-plane/envoy/api/v2/listener"
envoy_api_v2_route "github.com/envoyproxy/go-control-plane/envoy/api/v2/route"
http "github.com/envoyproxy/go-control-plane/envoy/config/filter/network/http_connection_manager/v2"
"github.com/envoyproxy/go-control-plane/pkg/wellknown"
"github.com/projectcontour/contour/internal/protobuf"
)
// StatsListener returns a *v2.Listener configured to serve prometheus
// metrics on /stats.
func StatsListener(address string, port int) *v2.Listener {
return &v2.Listener{
Name: "stats-health",
Address: SocketAddress(address, port),
FilterChains: FilterChains(
&envoy_api_v2_listener.Filter{
Name: wellknown.HTTPConnectionManager,
ConfigType: &envoy_api_v2_listener.Filter_TypedConfig{
TypedConfig: protobuf.MustMarshalAny(&http.HttpConnectionManager{
StatPrefix: "stats",
RouteSpecifier: &http.HttpConnectionManager_RouteConfig{
RouteConfig: &v2.RouteConfiguration{
VirtualHosts: []*envoy_api_v2_route.VirtualHost{{
Name: "backend",
Domains: []string{"*"},
Routes: []*envoy_api_v2_route.Route{{
Match: &envoy_api_v2_route.RouteMatch{
PathSpecifier: &envoy_api_v2_route.RouteMatch_Prefix{
Prefix: "/ready",
},
},
Action: &envoy_api_v2_route.Route_Route{
Route: &envoy_api_v2_route.RouteAction{
ClusterSpecifier: &envoy_api_v2_route.RouteAction_Cluster{
Cluster: "service-stats",
},
},
},
}, {
Match: &envoy_api_v2_route.RouteMatch{
PathSpecifier: &envoy_api_v2_route.RouteMatch_Prefix{
Prefix: "/stats",
},
},
Action: &envoy_api_v2_route.Route_Route{
Route: &envoy_api_v2_route.RouteAction{
ClusterSpecifier: &envoy_api_v2_route.RouteAction_Cluster{
Cluster: "service-stats",
},
},
},
},
},
}},
},
},
HttpFilters: []*http.HttpFilter{{
Name: wellknown.Router,
}},
NormalizePath: protobuf.Bool(true),
}),
},
},
),
SocketOptions: TCPKeepaliveSocketOptions(),
}
}