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Extract custom template functions (#60695)
extract custom template functions and export the FuncMap
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parent
4e2bd63572
commit
05c9af5110
@ -2,16 +2,12 @@ package state
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import (
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"context"
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"encoding/json"
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"fmt"
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"math"
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"net/url"
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"strconv"
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"strings"
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"time"
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text_template "text/template"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/pkg/timestamp"
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"github.com/prometheus/prometheus/promql"
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@ -59,15 +55,7 @@ func expandTemplate(ctx context.Context, name, text string, labels map[string]st
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[]string{"missingkey=invalid"},
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)
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expander.Funcs(text_template.FuncMap{
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"graphLink": graphLink,
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"tableLink": tableLink,
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// This function is a no-op for now.
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"strvalue": func(value templateCaptureValue) string {
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return ""
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},
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})
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expander.Funcs(FuncMap)
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result, resultErr = expander.Expand()
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// Replace missing key value to one that does not look like an HTML tag. This can cause problems downstream in some notifiers.
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// For example, Telegram in HTML mode rejects requests with unsupported tags.
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@ -96,29 +84,3 @@ type query struct {
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Datasource string `json:"datasource"`
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Expr string `json:"expr"`
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}
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func graphLink(rawQuery string) string {
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var q query
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if err := json.Unmarshal([]byte(rawQuery), &q); err != nil {
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return ""
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}
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escapedExpression := url.QueryEscape(q.Expr)
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escapedDatasource := url.QueryEscape(q.Datasource)
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return fmt.Sprintf(
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`/explore?left={"datasource":%[1]q,"queries":[{"datasource":%[1]q,"expr":%q,"instant":false,"range":true,"refId":"A"}],"range":{"from":"now-1h","to":"now"}}`, escapedDatasource, escapedExpression)
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}
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func tableLink(rawQuery string) string {
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var q query
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if err := json.Unmarshal([]byte(rawQuery), &q); err != nil {
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return ""
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}
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escapedExpression := url.QueryEscape(q.Expr)
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escapedDatasource := url.QueryEscape(q.Datasource)
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return fmt.Sprintf(
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`/explore?left={"datasource":%[1]q,"queries":[{"datasource":%[1]q,"expr":%q,"instant":true,"range":false,"refId":"A"}],"range":{"from":"now-1h","to":"now"}}`, escapedDatasource, escapedExpression)
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}
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46
pkg/services/ngalert/state/template_functions.go
Normal file
46
pkg/services/ngalert/state/template_functions.go
Normal file
@ -0,0 +1,46 @@
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package state
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import (
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"encoding/json"
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"fmt"
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"net/url"
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text_template "text/template"
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)
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// FuncMap is a map of custom functions we use for templates.
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var FuncMap = text_template.FuncMap{
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"graphLink": graphLink,
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"tableLink": tableLink,
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"strvalue": strValue,
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}
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func graphLink(rawQuery string) string {
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var q query
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if err := json.Unmarshal([]byte(rawQuery), &q); err != nil {
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return ""
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}
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escapedExpression := url.QueryEscape(q.Expr)
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escapedDatasource := url.QueryEscape(q.Datasource)
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return fmt.Sprintf(
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`/explore?left={"datasource":%[1]q,"queries":[{"datasource":%[1]q,"expr":%q,"instant":false,"range":true,"refId":"A"}],"range":{"from":"now-1h","to":"now"}}`, escapedDatasource, escapedExpression)
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}
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func tableLink(rawQuery string) string {
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var q query
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if err := json.Unmarshal([]byte(rawQuery), &q); err != nil {
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return ""
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}
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escapedExpression := url.QueryEscape(q.Expr)
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escapedDatasource := url.QueryEscape(q.Datasource)
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return fmt.Sprintf(
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`/explore?left={"datasource":%[1]q,"queries":[{"datasource":%[1]q,"expr":%q,"instant":true,"range":false,"refId":"A"}],"range":{"from":"now-1h","to":"now"}}`, escapedDatasource, escapedExpression)
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}
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// This function is a no-op for now.
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func strValue(value templateCaptureValue) string {
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return ""
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}
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