Курнат Андрей
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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// Copyright 2017, OpenCensus Authors
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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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//
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package zpages // import "go.opentelemetry.io/contrib/zpages"
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import (
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"fmt"
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"html/template"
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"io"
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"log"
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"go.opentelemetry.io/contrib/zpages/internal"
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)
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var (
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templateFunctions = template.FuncMap{
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"even": even,
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"spanRow": spanRowFormatter,
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}
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headerTemplate = parseTemplate("header")
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summaryTableTemplate = parseTemplate("summary")
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tracesTableTemplate = parseTemplate("traces")
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footerTemplate = parseTemplate("footer")
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)
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// headerData contains data for the header template.
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type headerData struct {
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Title string
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}
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func parseTemplate(name string) *template.Template {
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f, err := internal.Templates.Open("templates/" + name + ".html")
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if err != nil {
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log.Panicf("%v: %v", name, err) //nolint:revive // Called during initialization.
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}
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defer func() {
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if err = f.Close(); err != nil {
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log.Panicf("%v: %v", name, err) //nolint:revive // Called during initialization.
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}
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}()
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text, err := io.ReadAll(f)
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if err != nil {
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log.Panicf("%v: %v", name, err) //nolint:revive // Called during initialization.
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}
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return template.Must(template.New(name).Funcs(templateFunctions).Parse(string(text)))
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}
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func spanRowFormatter(r spanRow) template.HTML {
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if !r.IsValid() {
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return ""
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}
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col := "black"
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if r.IsSampled() {
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col = "blue"
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}
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tpl := fmt.Sprintf(
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`trace_id: <b style="color:%s">%s</b> span_id: %s`,
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col,
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r.TraceID(),
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r.SpanID(),
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)
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if r.ParentSpanContext.IsValid() {
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tpl += fmt.Sprintf(` parent_span_id: %s`, r.ParentSpanContext.SpanID())
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}
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//nolint:gosec // G203: None of the dynamic attributes (TraceID/SpanID) can
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// contain characters that need escaping so this lint issue is a false
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// positive.
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return template.HTML(tpl)
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}
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func even(x int) bool {
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return x%2 == 0
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}
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