mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-05 01:01:09 +01:00
119 lines
2.7 KiB
Go
119 lines
2.7 KiB
Go
package remotewrite
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import (
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"context"
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"fmt"
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"io/ioutil"
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"math/rand"
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"net/http"
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"net/http/httptest"
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"sync/atomic"
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"testing"
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"time"
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"github.com/golang/snappy"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
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)
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func TestClient_Push(t *testing.T) {
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testSrv := newRWServer()
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cfg := Config{
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Addr: testSrv.URL,
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MaxBatchSize: 100,
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}
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client, err := NewClient(context.Background(), cfg)
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if err != nil {
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t.Fatalf("failed to create client: %s", err)
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}
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const rowsN = 1e4
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var sent int
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for i := 0; i < rowsN; i++ {
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s := prompbmarshal.TimeSeries{
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Samples: []prompbmarshal.Sample{{
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Value: rand.Float64(),
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Timestamp: time.Now().Unix(),
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}},
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}
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err := client.Push(s)
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if err == nil {
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sent++
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}
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}
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if sent == 0 {
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t.Fatalf("0 series sent")
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}
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if err := client.Close(); err != nil {
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t.Fatalf("failed to close client: %s", err)
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}
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got := testSrv.accepted()
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if got != sent {
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t.Fatalf("expected to have %d series; got %d", sent, got)
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}
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}
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func newRWServer() *rwServer {
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rw := &rwServer{}
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rw.Server = httptest.NewServer(http.HandlerFunc(rw.handler))
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return rw
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}
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type rwServer struct {
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// WARN: ordering of fields is important for alignment!
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// see https://golang.org/pkg/sync/atomic/#pkg-note-BUG
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acceptedRows uint64
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*httptest.Server
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}
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func (rw *rwServer) accepted() int {
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return int(atomic.LoadUint64(&rw.acceptedRows))
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}
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func (rw *rwServer) err(w http.ResponseWriter, err error) {
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w.WriteHeader(http.StatusBadRequest)
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w.Write([]byte(err.Error()))
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}
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func (rw *rwServer) handler(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodPost {
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rw.err(w, fmt.Errorf("bad method %q", r.Method))
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return
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}
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h := r.Header.Get("Content-Encoding")
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if h != "snappy" {
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rw.err(w, fmt.Errorf("header read error: Content-Encoding is not snappy (%q)", h))
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}
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h = r.Header.Get("Content-Type")
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if h != "application/x-protobuf" {
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rw.err(w, fmt.Errorf("header read error: Content-Type is not x-protobuf (%q)", h))
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}
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h = r.Header.Get("X-Prometheus-Remote-Write-Version")
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if h != "0.1.0" {
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rw.err(w, fmt.Errorf("header read error: X-Prometheus-Remote-Write-Version is not 0.1.0 (%q)", h))
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}
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data, err := ioutil.ReadAll(r.Body)
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if err != nil {
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rw.err(w, fmt.Errorf("body read err: %w", err))
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return
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}
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defer func() { _ = r.Body.Close() }()
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b, err := snappy.Decode(nil, data)
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if err != nil {
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rw.err(w, fmt.Errorf("decode err: %w", err))
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return
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}
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wr := &prompb.WriteRequest{}
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if err := wr.Unmarshal(b); err != nil {
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rw.err(w, fmt.Errorf("unmarhsal err: %w", err))
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return
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}
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atomic.AddUint64(&rw.acceptedRows, uint64(len(wr.Timeseries)))
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w.WriteHeader(http.StatusNoContent)
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}
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