/
tracing.go
112 lines (104 loc) · 3.35 KB
/
tracing.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 v3
import (
envoy_config_trace_v3 "github.com/envoyproxy/go-control-plane/envoy/config/trace/v3"
http "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/http_connection_manager/v3"
envoy_trace_v3 "github.com/envoyproxy/go-control-plane/envoy/type/tracing/v3"
envoy_type "github.com/envoyproxy/go-control-plane/envoy/type/v3"
"github.com/projectcontour/contour/internal/dag"
"github.com/projectcontour/contour/internal/protobuf"
"github.com/projectcontour/contour/internal/timeout"
"google.golang.org/protobuf/types/known/wrapperspb"
"k8s.io/apimachinery/pkg/types"
)
// TracingConfig returns a tracing config,
// or nil if config is nil.
func TracingConfig(tracing *EnvoyTracingConfig) *http.HttpConnectionManager_Tracing {
if tracing == nil {
return nil
}
var customTags []*envoy_trace_v3.CustomTag
for _, tag := range tracing.CustomTags {
if traceCustomTag := customTag(tag); traceCustomTag != nil {
customTags = append(customTags, traceCustomTag)
}
}
return &http.HttpConnectionManager_Tracing{
OverallSampling: &envoy_type.Percent{
Value: tracing.OverallSampling,
},
MaxPathTagLength: wrapperspb.UInt32(tracing.MaxPathTagLength),
CustomTags: customTags,
Provider: &envoy_config_trace_v3.Tracing_Http{
Name: "envoy.tracers.opentelemetry",
ConfigType: &envoy_config_trace_v3.Tracing_Http_TypedConfig{
TypedConfig: protobuf.MustMarshalAny(&envoy_config_trace_v3.OpenTelemetryConfig{
GrpcService: GrpcService(dag.ExtensionClusterName(tracing.ExtensionService), tracing.SNI, tracing.Timeout),
ServiceName: tracing.ServiceName,
}),
},
},
}
}
func customTag(tag *CustomTag) *envoy_trace_v3.CustomTag {
if tag == nil {
return nil
}
if tag.Literal != "" {
return &envoy_trace_v3.CustomTag{
Tag: tag.TagName,
Type: &envoy_trace_v3.CustomTag_Literal_{
Literal: &envoy_trace_v3.CustomTag_Literal{
Value: tag.Literal,
},
},
}
}
if tag.EnvironmentName != "" {
return &envoy_trace_v3.CustomTag{
Tag: tag.TagName,
Type: &envoy_trace_v3.CustomTag_Environment_{
Environment: &envoy_trace_v3.CustomTag_Environment{
Name: tag.EnvironmentName,
},
},
}
}
if tag.RequestHeaderName != "" {
return &envoy_trace_v3.CustomTag{
Tag: tag.TagName,
Type: &envoy_trace_v3.CustomTag_RequestHeader{
RequestHeader: &envoy_trace_v3.CustomTag_Header{
Name: tag.RequestHeaderName,
},
},
}
}
return nil
}
type EnvoyTracingConfig struct {
ExtensionService types.NamespacedName
ServiceName string
SNI string
Timeout timeout.Setting
OverallSampling float64
MaxPathTagLength uint32
CustomTags []*CustomTag
}
type CustomTag struct {
TagName string
Literal string
EnvironmentName string
RequestHeaderName string
}