prometheus/web/status.go

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// Copyright 2013 Prometheus Team
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package web
import (
"github.com/prometheus/prometheus/retrieval"
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"github.com/prometheus/prometheus/rules"
"github.com/prometheus/prometheus/storage/metric"
"net/http"
"sync"
"time"
)
type PrometheusStatus struct {
BuildInfo map[string]string
Config string
Curation metric.CurationState
Flags map[string]string
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Rules []rules.Rule
TargetPools map[string]*retrieval.TargetPool
Birth time.Time
}
type StatusHandler struct {
CurationState chan metric.CurationState
PrometheusStatus *PrometheusStatus
mutex sync.RWMutex
}
func (h *StatusHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
select {
case curationState := <-h.CurationState:
h.mutex.Lock()
defer h.mutex.Unlock()
h.PrometheusStatus.Curation = curationState
default:
h.mutex.RLock()
defer h.mutex.RUnlock()
}
executeTemplate(w, "status", h.PrometheusStatus)
}