mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-26 14:09:41 -08:00
139 lines
3.6 KiB
Go
139 lines
3.6 KiB
Go
// Copyright 2023 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 main
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"time"
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"github.com/golang/snappy"
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config_util "github.com/prometheus/common/config"
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"github.com/prometheus/common/model"
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"github.com/prometheus/prometheus/storage/remote"
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"github.com/prometheus/prometheus/util/fmtutil"
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)
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// Push metrics to a prometheus remote write (for testing purpose only).
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func PushMetrics(url *url.URL, roundTripper http.RoundTripper, headers map[string]string, timeout time.Duration, labels map[string]string, files ...string) int {
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addressURL, err := url.Parse(url.String())
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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return failureExitCode
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}
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// build remote write client
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writeClient, err := remote.NewWriteClient("remote-write", &remote.ClientConfig{
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URL: &config_util.URL{URL: addressURL},
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Timeout: model.Duration(timeout),
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})
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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return failureExitCode
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}
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// set custom tls config from httpConfigFilePath
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// set custom headers to every request
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client, ok := writeClient.(*remote.Client)
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if !ok {
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fmt.Fprintln(os.Stderr, fmt.Errorf("unexpected type %T", writeClient))
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return failureExitCode
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}
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client.Client.Transport = &setHeadersTransport{
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RoundTripper: roundTripper,
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headers: headers,
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}
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var data []byte
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var failed bool
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if len(files) == 0 {
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data, err = io.ReadAll(os.Stdin)
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if err != nil {
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fmt.Fprintln(os.Stderr, " FAILED:", err)
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return failureExitCode
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}
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fmt.Printf("Parsing standard input\n")
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if parseAndPushMetrics(client, data, labels) {
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fmt.Printf(" SUCCESS: metrics pushed to remote write.\n")
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return successExitCode
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}
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return failureExitCode
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}
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for _, file := range files {
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data, err = os.ReadFile(file)
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if err != nil {
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fmt.Fprintln(os.Stderr, " FAILED:", err)
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failed = true
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continue
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}
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fmt.Printf("Parsing metrics file %s\n", file)
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if parseAndPushMetrics(client, data, labels) {
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fmt.Printf(" SUCCESS: metrics file %s pushed to remote write.\n", file)
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continue
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}
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failed = true
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}
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if failed {
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return failureExitCode
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}
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return successExitCode
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}
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func parseAndPushMetrics(client *remote.Client, data []byte, labels map[string]string) bool {
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metricsData, err := fmtutil.MetricTextToWriteRequest(bytes.NewReader(data), labels)
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if err != nil {
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fmt.Fprintln(os.Stderr, " FAILED:", err)
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return false
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}
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raw, err := metricsData.Marshal()
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if err != nil {
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fmt.Fprintln(os.Stderr, " FAILED:", err)
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return false
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}
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// Encode the request body into snappy encoding.
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compressed := snappy.Encode(nil, raw)
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err = client.Store(context.Background(), compressed, 0, remote.Version1, "snappy")
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if err != nil {
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fmt.Fprintln(os.Stderr, " FAILED:", err)
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return false
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}
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return true
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}
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type setHeadersTransport struct {
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http.RoundTripper
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headers map[string]string
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}
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func (s *setHeadersTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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for key, value := range s.headers {
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req.Header.Set(key, value)
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}
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return s.RoundTripper.RoundTrip(req)
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}
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