mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-14 09:34:05 -08:00
bb540fd9fd
With this commit, sending SIGHUP to the Prometheus process will reload and apply the configuration file. The different components attempt to handle failing changes gracefully.
62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
// Copyright 2013 The Prometheus Authors
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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 web
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import (
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"net/http"
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"sync"
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"time"
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"github.com/prometheus/prometheus/config"
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"github.com/prometheus/prometheus/retrieval"
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"github.com/prometheus/prometheus/rules"
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)
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// PrometheusStatusHandler implements http.Handler.
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type PrometheusStatusHandler struct {
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mu sync.RWMutex
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BuildInfo map[string]string
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Config string
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Flags map[string]string
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RuleManager *rules.Manager
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TargetPools func() map[string][]retrieval.Target
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Birth time.Time
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PathPrefix string
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}
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// TargetStateToClass returns a map of TargetState to the name of a Bootstrap CSS class.
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func (h *PrometheusStatusHandler) TargetStateToClass() map[retrieval.TargetState]string {
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return map[retrieval.TargetState]string{
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retrieval.Unknown: "warning",
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retrieval.Healthy: "success",
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retrieval.Unhealthy: "danger",
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}
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}
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func (h *PrometheusStatusHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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h.mu.RLock()
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executeTemplate(w, "status", h, h.PathPrefix)
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h.mu.RUnlock()
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}
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// ApplyConfig updates the status handler's state as the new config requires.
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func (h *PrometheusStatusHandler) ApplyConfig(conf *config.Config) {
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h.mu.Lock()
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h.Config = conf.String()
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h.mu.Unlock()
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}
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