mirror of
https://github.com/prometheus/prometheus.git
synced 2024-09-20 07:47:31 -07:00
ce97cdd477
* Move remote read handler to remote package. This follows the pattern I started with the remote write handler. The api/v1 package is getting pretty cluttered. Moving code to other packages helps reduce this size and also makes it reusable - eg Cortex doesn't do streaming remote writes yet, and will very soon. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Deal with a nil remoteReadHandler for tests. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Remove the global metrics. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Fix test. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Review feedback. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>
87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
// Copyright 2021 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 remote
|
|
|
|
import (
|
|
"context"
|
|
"net/http"
|
|
|
|
"github.com/go-kit/kit/log"
|
|
"github.com/go-kit/kit/log/level"
|
|
"github.com/prometheus/prometheus/prompb"
|
|
"github.com/prometheus/prometheus/storage"
|
|
)
|
|
|
|
type writeHandler struct {
|
|
logger log.Logger
|
|
appendable storage.Appendable
|
|
}
|
|
|
|
// NewWriteHandler creates a http.Handler that accepts remote write requests and
|
|
// writes them to the provided appendable.
|
|
func NewWriteHandler(logger log.Logger, appendable storage.Appendable) http.Handler {
|
|
return &writeHandler{
|
|
logger: logger,
|
|
appendable: appendable,
|
|
}
|
|
}
|
|
|
|
func (h *writeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
req, err := DecodeWriteRequest(r.Body)
|
|
if err != nil {
|
|
level.Error(h.logger).Log("msg", "Error decoding remote write request", "err", err.Error())
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
err = h.write(r.Context(), req)
|
|
switch err {
|
|
case nil:
|
|
case storage.ErrOutOfOrderSample, storage.ErrOutOfBounds, storage.ErrDuplicateSampleForTimestamp:
|
|
// Indicated an out of order sample is a bad request to prevent retries.
|
|
level.Error(h.logger).Log("msg", "Out of order sample from remote write", "err", err.Error())
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
default:
|
|
level.Error(h.logger).Log("msg", "Error appending remote write", "err", err.Error())
|
|
http.Error(w, err.Error(), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusNoContent)
|
|
}
|
|
|
|
func (h *writeHandler) write(ctx context.Context, req *prompb.WriteRequest) (err error) {
|
|
app := h.appendable.Appender(ctx)
|
|
defer func() {
|
|
if err != nil {
|
|
app.Rollback()
|
|
return
|
|
}
|
|
err = app.Commit()
|
|
}()
|
|
|
|
for _, ts := range req.Timeseries {
|
|
labels := labelProtosToLabels(ts.Labels)
|
|
for _, s := range ts.Samples {
|
|
_, err = app.Append(0, labels, s.Timestamp, s.Value)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|