mirror of
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5859b74f1b
- Move CONTRIBUTORS.md to the more common AUTHORS. - Added the required NOTICE file. - Changed "Prometheus Team" to "The Prometheus Authors". - Reverted the erroneous changes to the Apache License.
73 lines
1.9 KiB
Go
73 lines
1.9 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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"sort"
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"sync"
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"github.com/prometheus/prometheus/rules"
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"github.com/prometheus/prometheus/rules/manager"
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)
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// AlertStatus bundles alerting rules and the mapping of alert states to row
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// classes.
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type AlertStatus struct {
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AlertingRules []*rules.AlertingRule
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AlertStateToRowClass map[rules.AlertState]string
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}
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type byAlertStateSorter struct {
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alerts []*rules.AlertingRule
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}
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func (s byAlertStateSorter) Len() int {
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return len(s.alerts)
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}
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func (s byAlertStateSorter) Less(i, j int) bool {
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return s.alerts[i].State() > s.alerts[j].State()
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}
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func (s byAlertStateSorter) Swap(i, j int) {
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s.alerts[i], s.alerts[j] = s.alerts[j], s.alerts[i]
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}
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// AlertsHandler implements http.Handler.
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type AlertsHandler struct {
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RuleManager manager.RuleManager
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mutex sync.Mutex
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}
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func (h *AlertsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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h.mutex.Lock()
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defer h.mutex.Unlock()
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alerts := h.RuleManager.AlertingRules()
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alertsSorter := byAlertStateSorter{alerts: alerts}
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sort.Sort(alertsSorter)
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alertStatus := AlertStatus{
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AlertingRules: alertsSorter.alerts,
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AlertStateToRowClass: map[rules.AlertState]string{
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rules.Inactive: "success",
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rules.Pending: "warning",
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rules.Firing: "danger",
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},
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}
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executeTemplate(w, "alerts", alertStatus)
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}
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