mirror of
https://github.com/astaxie/beego.git
synced 2024-06-29 08:04:13 +00:00
88 lines
3.0 KiB
Go
88 lines
3.0 KiB
Go
// Copyright 2020 beego
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package opentracing
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import (
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"context"
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logKit "github.com/go-kit/kit/log"
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opentracingKit "github.com/go-kit/kit/tracing/opentracing"
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"github.com/opentracing/opentracing-go"
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beego "github.com/astaxie/beego/pkg"
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beegoCtx "github.com/astaxie/beego/pkg/context"
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)
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// FilterChainBuilder provides an extension point that we can support more configurations if necessary
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type FilterChainBuilder struct {
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// CustomSpanFunc makes users to custom the span.
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CustomSpanFunc func(span opentracing.Span, ctx *beegoCtx.Context)
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}
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func (builder *FilterChainBuilder) FilterChain(next beego.FilterFunc) beego.FilterFunc {
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return func(ctx *beegoCtx.Context) {
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var (
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spanCtx context.Context
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span opentracing.Span
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)
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operationName := builder.operationName(ctx)
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if preSpan := opentracing.SpanFromContext(ctx.Request.Context()); preSpan == nil {
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inject := opentracingKit.HTTPToContext(opentracing.GlobalTracer(), operationName, logKit.NewNopLogger())
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spanCtx = inject(ctx.Request.Context(), ctx.Request)
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span = opentracing.SpanFromContext(spanCtx)
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} else {
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span, spanCtx = opentracing.StartSpanFromContext(ctx.Request.Context(), operationName)
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}
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defer span.Finish()
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newReq := ctx.Request.Clone(spanCtx)
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ctx.Reset(ctx.ResponseWriter.ResponseWriter, newReq)
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next(ctx)
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// if you think we need to do more things, feel free to create an issue to tell us
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span.SetTag("http.status_code", ctx.ResponseWriter.Status)
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span.SetTag("http.method", ctx.Input.Method())
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span.SetTag("peer.hostname", ctx.Request.Host)
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span.SetTag("http.url", ctx.Request.URL.String())
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span.SetTag("http.scheme", ctx.Request.URL.Scheme)
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span.SetTag("span.kind", "server")
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span.SetTag("component", "beego")
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if ctx.Output.IsServerError() || ctx.Output.IsClientError() {
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span.SetTag("error", true)
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}
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span.SetTag("peer.address", ctx.Request.RemoteAddr)
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span.SetTag("http.proto", ctx.Request.Proto)
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span.SetTag("beego.route", ctx.Input.GetData("RouterPattern"))
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if builder.CustomSpanFunc != nil {
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builder.CustomSpanFunc(span, ctx)
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}
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}
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}
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func (builder *FilterChainBuilder) operationName(ctx *beegoCtx.Context) string {
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operationName := ctx.Input.URL()
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// it means that there is not any span, so we create a span as the root span.
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// TODO, if we support multiple servers, this need to be changed
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route, found := beego.BeeApp.Handlers.FindRouter(ctx)
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if found {
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operationName = ctx.Input.Method() + "#" + route.GetPattern()
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}
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return operationName
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}
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