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// Copyright 2019 The Prometheus Authors
// 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 handler
import (
"log/slog"
"net/http"
"time"
"github.com/prometheus/pushgateway/storage"
)
// WipeMetricStore deletes all the metrics in MetricStore.
//
// The returned handler is already instrumented for Prometheus.
func WipeMetricStore(
ms storage.MetricStore,
logger *slog.Logger) http.Handler {
return InstrumentWithCounter(
"wipe",
http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusAccepted)
logger.Debug("start wiping metric store")
// Delete all metric groups by sending write requests with MetricFamilies equal to nil.
for _, group := range ms.GetMetricFamiliesMap() {
ms.SubmitWriteRequest(storage.WriteRequest{
Labels: group.Labels,
Timestamp: time.Now(),
})
}
}))
}
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