mirror of https://github.com/astaxie/beego.git
72 lines
2.4 KiB
Go
72 lines
2.4 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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"strings"
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"github.com/opentracing/opentracing-go"
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"github.com/astaxie/beego/pkg/orm"
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)
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// FilterChainBuilder provides an extension point
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// this Filter's behavior looks a little bit strange
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// for example:
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// if we want to trace QuerySetter
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// actually we trace invoking "QueryTable" and "QueryTableWithCtx"
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// the method Begin*, Commit and Rollback are ignored.
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// When use using those methods, it means that they want to manager their transaction manually, so we won't handle them.
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type FilterChainBuilder struct {
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// CustomSpanFunc users are able to custom their span
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CustomSpanFunc func(span opentracing.Span, ctx context.Context, inv *orm.Invocation)
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}
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func (builder *FilterChainBuilder) FilterChain(next orm.Filter) orm.Filter {
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return func(ctx context.Context, inv *orm.Invocation) []interface{} {
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operationName := builder.operationName(ctx, inv)
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if strings.HasPrefix(inv.Method, "Begin") || inv.Method == "Commit" || inv.Method == "Rollback" {
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return next(ctx, inv)
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}
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span, spanCtx := opentracing.StartSpanFromContext(ctx, operationName)
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defer span.Finish()
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res := next(spanCtx, inv)
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builder.buildSpan(span, spanCtx, inv)
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return res
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}
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}
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func (builder *FilterChainBuilder) buildSpan(span opentracing.Span, ctx context.Context, inv *orm.Invocation) {
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span.SetTag("orm.method", inv.Method)
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span.SetTag("orm.table", inv.GetTableName())
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span.SetTag("orm.insideTx", inv.InsideTx)
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span.SetTag("orm.txName", ctx.Value(orm.TxNameKey))
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span.SetTag("span.kind", "client")
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span.SetTag("component", "beego")
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if builder.CustomSpanFunc != nil {
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builder.CustomSpanFunc(span, ctx, inv)
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}
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}
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func (builder *FilterChainBuilder) operationName(ctx context.Context, inv *orm.Invocation) string {
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if n, ok := ctx.Value(orm.TxNameKey).(string); ok {
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return inv.Method + "#tx(" + n + ")"
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}
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return inv.Method + "#" + inv.GetTableName()
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}
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