mirror of
https://github.com/prometheus/alertmanager
synced 2025-01-05 05:19:40 +00:00
70bd5dad98
* Support UTF-8 label matchers: Use compat package in Alertmanager server This pull request adds use of the compat package in Alertmanager server that will allow users to switch between the new matchers/parse parser and the old pkg/labels parser. The new matchers/parse parser uses a fallback mechanism where if the input cannot be parsed in the new parser it then attempts to use the old parser. If an input is parsed in the old parser but not the new parser then a warning log is emitted. Signed-off-by: George Robinson <george.robinson@grafana.com> --------- Signed-off-by: George Robinson <george.robinson@grafana.com>
124 lines
3.0 KiB
Go
124 lines
3.0 KiB
Go
// Copyright 2023 Prometheus Team
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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 featurecontrol
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import (
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"errors"
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"fmt"
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"strings"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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)
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const (
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FeatureReceiverNameInMetrics = "receiver-name-in-metrics"
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FeatureClassicMode = "classic-mode"
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FeatureUTF8StrictMode = "utf8-strict-mode"
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)
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var AllowedFlags = []string{
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FeatureReceiverNameInMetrics,
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FeatureClassicMode,
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FeatureUTF8StrictMode,
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}
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type Flagger interface {
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EnableReceiverNamesInMetrics() bool
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ClassicMode() bool
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UTF8StrictMode() bool
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}
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type Flags struct {
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logger log.Logger
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enableReceiverNamesInMetrics bool
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classicMode bool
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utf8StrictMode bool
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}
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func (f *Flags) EnableReceiverNamesInMetrics() bool {
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return f.enableReceiverNamesInMetrics
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}
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func (f *Flags) ClassicMode() bool {
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return f.classicMode
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}
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func (f *Flags) UTF8StrictMode() bool {
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return f.utf8StrictMode
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}
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type flagOption func(flags *Flags)
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func enableReceiverNameInMetrics() flagOption {
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return func(configs *Flags) {
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configs.enableReceiverNamesInMetrics = true
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}
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}
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func enableClassicMode() flagOption {
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return func(configs *Flags) {
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configs.classicMode = true
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}
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}
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func enableUTF8StrictMode() flagOption {
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return func(configs *Flags) {
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configs.utf8StrictMode = true
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}
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}
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func NewFlags(logger log.Logger, features string) (Flagger, error) {
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fc := &Flags{logger: logger}
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opts := []flagOption{}
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if len(features) == 0 {
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return NoopFlags{}, nil
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}
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for _, feature := range strings.Split(features, ",") {
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switch feature {
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case FeatureReceiverNameInMetrics:
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opts = append(opts, enableReceiverNameInMetrics())
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level.Warn(logger).Log("msg", "Experimental receiver name in metrics enabled")
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case FeatureClassicMode:
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opts = append(opts, enableClassicMode())
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level.Warn(logger).Log("msg", "Classic mode enabled")
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case FeatureUTF8StrictMode:
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opts = append(opts, enableUTF8StrictMode())
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level.Warn(logger).Log("msg", "UTF-8 mode enabled")
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default:
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return nil, fmt.Errorf("Unknown option '%s' for --enable-feature", feature)
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}
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}
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for _, opt := range opts {
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opt(fc)
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}
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if fc.classicMode && fc.utf8StrictMode {
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return nil, errors.New("cannot have both classic and UTF-8 modes enabled")
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}
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return fc, nil
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}
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type NoopFlags struct{}
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func (n NoopFlags) EnableReceiverNamesInMetrics() bool { return false }
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func (n NoopFlags) ClassicMode() bool { return false }
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func (n NoopFlags) UTF8StrictMode() bool { return false }
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