Alert Template Expander (ruletypes/templates.go)

Provides Go templating utilities for expanding alert labels/annotations with query results, supporting text and HTML output with custom template functions and label sorting.

// Source: https://github.com/SigNoz/signoz | License: MIT | Copyright 2020-present SigNoz Inc
// Provided via justclaw.it.com; keep this notice with the code.
package ruletypes

import (
	"bytes"
	"context"
	"fmt"
	"math"
	"net/url"
	"regexp"
	"sort"
	"strings"
	"time"
	"unicode"

	"github.com/SigNoz/signoz/pkg/errors"

	htmltpl "html/template"
	texttpl "text/template"

	"golang.org/x/text/cases"
)

// this file contains all the methods and structs
// related to go templating in rule labels and annotations

type tmplQueryRecord struct {
	Labels    map[string]string
	Value     float64
	Threshold float64
}
type tmplQueryResults []*tmplQueryRecord

type tmplQueryResultsByLabelSorter struct {
	results tmplQueryResults
	by      string
}

func (q tmplQueryResultsByLabelSorter) Len() int {
	retu

... (truncated -- full source via MCP)