1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// Copyright 2014 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 (
"fmt"
"log/slog"
"net/http"
"time"
"github.com/prometheus/common/route"
"github.com/prometheus/pushgateway/storage"
)
// Delete returns a handler that accepts delete requests.
//
// The returned handler is already instrumented for Prometheus.
func Delete(ms storage.MetricStore, jobBase64Encoded bool, logger *slog.Logger) func(http.ResponseWriter, *http.Request) {
instrumentedHandler := InstrumentWithCounter(
"delete",
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
job := route.Param(r.Context(), "job")
if jobBase64Encoded {
var err error
if job, err = decodeBase64(job); err != nil {
http.Error(w, fmt.Sprintf("invalid base64 encoding in job name %q: %v", job, err), http.StatusBadRequest)
logger.Debug("invalid base64 encoding in job name", "job", job, "err", err.Error())
return
}
}
labelsString := route.Param(r.Context(), "labels")
labels, err := splitLabels(labelsString)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
logger.Debug("failed to parse URL", "url", labelsString, "err", err.Error())
return
}
if job == "" {
http.Error(w, "job name is required", http.StatusBadRequest)
logger.Debug("job name is required")
return
}
labels["job"] = job
ms.SubmitWriteRequest(storage.WriteRequest{
Labels: labels,
Timestamp: time.Now(),
})
w.WriteHeader(http.StatusAccepted)
}),
)
return func(w http.ResponseWriter, r *http.Request) {
instrumentedHandler.ServeHTTP(w, r)
}
}
|
