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handler_test.go
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handler_test.go
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// Copyright (c) The Thanos Authors.
// Licensed under the Apache License 2.0.
package receive
import (
"bytes"
"context"
"fmt"
"io"
"math"
"net/http"
"net/http/httptest"
"os"
"path"
"path/filepath"
"runtime"
"runtime/pprof"
"strings"
"sync"
"testing"
"time"
"google.golang.org/grpc"
"gopkg.in/yaml.v3"
"github.com/alecthomas/units"
"github.com/go-kit/log"
"github.com/gogo/protobuf/proto"
"github.com/golang/snappy"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/model/exemplar"
"github.com/prometheus/prometheus/model/histogram"
"github.com/prometheus/prometheus/model/labels"
prometheusMetadata "github.com/prometheus/prometheus/model/metadata"
"github.com/prometheus/prometheus/model/relabel"
"github.com/prometheus/prometheus/storage"
"github.com/prometheus/prometheus/tsdb"
"github.com/efficientgo/core/testutil"
"github.com/thanos-io/thanos/pkg/block/metadata"
"github.com/thanos-io/thanos/pkg/extkingpin"
"github.com/thanos-io/thanos/pkg/runutil"
"github.com/thanos-io/thanos/pkg/store/labelpb"
"github.com/thanos-io/thanos/pkg/store/storepb"
"github.com/thanos-io/thanos/pkg/store/storepb/prompb"
)
type fakeTenantAppendable struct {
f *fakeAppendable
}
func newFakeTenantAppendable(f *fakeAppendable) *fakeTenantAppendable {
return &fakeTenantAppendable{f: f}
}
func (t *fakeTenantAppendable) TenantAppendable(_ string) (Appendable, error) {
return t.f, nil
}
func (t *fakeTenantAppendable) FlushTenant(_ string) error { return nil }
type fakeAppendable struct {
appender storage.Appender
appenderErr func() error
}
var _ Appendable = &fakeAppendable{}
func nilErrFn() error {
return nil
}
func (f *fakeAppendable) Appender(_ context.Context) (storage.Appender, error) {
errf := f.appenderErr
if errf == nil {
errf = nilErrFn
}
return f.appender, errf()
}
type fakeAppender struct {
sync.Mutex
samples map[storage.SeriesRef][]prompb.Sample
exemplars map[storage.SeriesRef][]exemplar.Exemplar
appendErr func() error
commitErr func() error
rollbackErr func() error
}
var _ storage.Appender = &fakeAppender{}
var _ storage.GetRef = &fakeAppender{}
func newFakeAppender(appendErr, commitErr, rollbackErr func() error) *fakeAppender { //nolint:unparam
if appendErr == nil {
appendErr = nilErrFn
}
if commitErr == nil {
commitErr = nilErrFn
}
if rollbackErr == nil {
rollbackErr = nilErrFn
}
return &fakeAppender{
samples: make(map[storage.SeriesRef][]prompb.Sample),
appendErr: appendErr,
commitErr: commitErr,
rollbackErr: rollbackErr,
}
}
func (f *fakeAppender) UpdateMetadata(storage.SeriesRef, labels.Labels, prometheusMetadata.Metadata) (storage.SeriesRef, error) {
return 0, nil
}
func (f *fakeAppender) Get(l labels.Labels) []prompb.Sample {
f.Lock()
defer f.Unlock()
s := f.samples[storage.SeriesRef(l.Hash())]
res := make([]prompb.Sample, len(s))
copy(res, s)
return res
}
func (f *fakeAppender) Append(ref storage.SeriesRef, l labels.Labels, t int64, v float64) (storage.SeriesRef, error) {
f.Lock()
defer f.Unlock()
if ref == 0 {
ref = storage.SeriesRef(l.Hash())
}
f.samples[ref] = append(f.samples[ref], prompb.Sample{Timestamp: t, Value: v})
return ref, f.appendErr()
}
func (f *fakeAppender) AppendExemplar(ref storage.SeriesRef, l labels.Labels, e exemplar.Exemplar) (storage.SeriesRef, error) {
f.Lock()
defer f.Unlock()
if ref == 0 {
ref = storage.SeriesRef(l.Hash())
}
f.exemplars[ref] = append(f.exemplars[ref], e)
return ref, f.appendErr()
}
// TODO(rabenhorst): Needs to be implement for native histogram support.
func (f *fakeAppender) AppendHistogram(ref storage.SeriesRef, l labels.Labels, t int64, h *histogram.Histogram, fh *histogram.FloatHistogram) (storage.SeriesRef, error) {
panic("not implemented")
}
func (f *fakeAppender) GetRef(l labels.Labels, hash uint64) (storage.SeriesRef, labels.Labels) {
return storage.SeriesRef(hash), l
}
func (f *fakeAppender) Commit() error {
return f.commitErr()
}
func (f *fakeAppender) Rollback() error {
return f.rollbackErr()
}
func newTestHandlerHashring(appendables []*fakeAppendable, replicationFactor uint64, hashringAlgo HashringAlgorithm) ([]*Handler, Hashring, error) {
var (
cfg = []HashringConfig{{Hashring: "test"}}
handlers []*Handler
wOpts = &WriterOptions{}
)
// create a fake peer group where we manually fill the cache with fake addresses pointed to our handlers
// This removes the network from the tests and creates a more consistent testing harness.
peers := &peerGroup{
dialOpts: nil,
m: sync.RWMutex{},
cache: map[string]storepb.WriteableStoreClient{},
dialer: func(context.Context, string, ...grpc.DialOption) (*grpc.ClientConn, error) {
// dialer should never be called since we are creating fake clients with fake addresses
// this protects against some leaking test that may attempt to dial random IP addresses
// which may pose a security risk.
return nil, errors.New("unexpected dial called in testing")
},
}
ag := addrGen{}
limiter, _ := NewLimiter(NewNopConfig(), nil, RouterIngestor, log.NewNopLogger())
for i := range appendables {
h := NewHandler(nil, &Options{
TenantHeader: DefaultTenantHeader,
ReplicaHeader: DefaultReplicaHeader,
ReplicationFactor: replicationFactor,
ForwardTimeout: 5 * time.Minute,
Writer: NewWriter(log.NewNopLogger(), newFakeTenantAppendable(appendables[i]), wOpts),
Limiter: limiter,
})
handlers = append(handlers, h)
h.peers = peers
addr := ag.newAddr()
h.options.Endpoint = addr
cfg[0].Endpoints = append(cfg[0].Endpoints, h.options.Endpoint)
peers.cache[addr] = &fakeRemoteWriteGRPCServer{h: h}
}
// Use hashmod as default.
if hashringAlgo == "" {
hashringAlgo = AlgorithmHashmod
}
hashring, err := NewMultiHashring(hashringAlgo, replicationFactor, cfg)
if err != nil {
return nil, nil, err
}
for _, h := range handlers {
h.Hashring(hashring)
}
return handlers, hashring, nil
}
func testReceiveQuorum(t *testing.T, hashringAlgo HashringAlgorithm, withConsistencyDelay bool) {
appenderErrFn := func() error { return errors.New("failed to get appender") }
conflictErrFn := func() error { return storage.ErrOutOfBounds }
tooOldSampleErrFn := func() error { return storage.ErrTooOldSample }
commitErrFn := func() error { return errors.New("failed to commit") }
wreq := &prompb.WriteRequest{
Timeseries: makeSeriesWithValues(50),
}
for _, tc := range []struct {
name string
status int
replicationFactor uint64
wreq *prompb.WriteRequest
appendables []*fakeAppendable
}{
{
name: "size 1 success",
status: http.StatusOK,
replicationFactor: 1,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 1 commit error",
status: http.StatusInternalServerError,
replicationFactor: 1,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
},
},
{
name: "size 1 conflict",
status: http.StatusConflict,
replicationFactor: 1,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(conflictErrFn, nil, nil),
},
},
},
{
name: "size 2 success",
status: http.StatusOK,
replicationFactor: 1,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 3 success",
status: http.StatusOK,
replicationFactor: 1,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 3 success with replication",
status: http.StatusOK,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 3 commit error",
status: http.StatusInternalServerError,
replicationFactor: 1,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
},
},
{
name: "size 3 commit error with replication",
status: http.StatusInternalServerError,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
},
},
{
name: "size 3 appender error with replication",
status: http.StatusInternalServerError,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
appenderErr: appenderErrFn,
},
{
appender: newFakeAppender(nil, nil, nil),
appenderErr: appenderErrFn,
},
{
appender: newFakeAppender(nil, nil, nil),
appenderErr: appenderErrFn,
},
},
},
{
name: "size 3 conflict with replication",
status: http.StatusConflict,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(conflictErrFn, nil, nil),
},
{
appender: newFakeAppender(conflictErrFn, nil, nil),
},
{
appender: newFakeAppender(conflictErrFn, nil, nil),
},
},
},
{
name: "size 3 conflict and commit error with replication",
status: http.StatusConflict,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(conflictErrFn, commitErrFn, nil),
},
{
appender: newFakeAppender(conflictErrFn, commitErrFn, nil),
},
{
appender: newFakeAppender(conflictErrFn, commitErrFn, nil),
},
},
},
{
name: "size 3 conflict with replication and error is ErrTooOldSample",
status: http.StatusConflict,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(tooOldSampleErrFn, nil, nil),
},
{
appender: newFakeAppender(tooOldSampleErrFn, nil, nil),
},
{
appender: newFakeAppender(tooOldSampleErrFn, nil, nil),
},
},
},
{
name: "size 3 with replication and one faulty",
status: http.StatusOK,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(cycleErrors([]error{storage.ErrOutOfBounds, storage.ErrOutOfOrderSample, storage.ErrDuplicateSampleForTimestamp}), nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 3 with replication and one commit error",
status: http.StatusOK,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 3 with replication and two conflicts",
status: http.StatusConflict,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(cycleErrors([]error{storage.ErrOutOfBounds, storage.ErrOutOfOrderSample, storage.ErrDuplicateSampleForTimestamp}), nil, nil),
},
{
appender: newFakeAppender(conflictErrFn, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 3 with replication one conflict and one commit error",
status: http.StatusInternalServerError,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(cycleErrors([]error{storage.ErrOutOfBounds, storage.ErrOutOfOrderSample, storage.ErrDuplicateSampleForTimestamp}), nil, nil),
},
},
},
{
name: "size 3 with replication two commit errors",
status: http.StatusInternalServerError,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 6 with replication 3",
status: http.StatusOK,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 6 with replication 3 one commit and two conflict error",
status: http.StatusConflict,
replicationFactor: 3,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, conflictErrFn, nil),
},
{
appender: newFakeAppender(nil, conflictErrFn, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
{
name: "size 6 with replication 5 two commit errors",
status: http.StatusOK,
replicationFactor: 5,
wreq: wreq,
appendables: []*fakeAppendable{
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, commitErrFn, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
},
},
} {
t.Run(tc.name, func(t *testing.T) {
handlers, hashring, err := newTestHandlerHashring(tc.appendables, tc.replicationFactor, hashringAlgo)
if err != nil {
t.Fatalf("unable to create test handler: %v", err)
}
tenant := "test"
// Test from the point of view of every node
// so that we know status code does not depend
// on which node is erroring and which node is receiving.
for i, handler := range handlers {
// Test that the correct status is returned.
rec, err := makeRequest(handler, tenant, tc.wreq)
if err != nil {
t.Fatalf("handler %d: unexpectedly failed making HTTP request: %v", i+1, err)
}
if rec.Code != tc.status {
t.Errorf("handler %d: got unexpected HTTP status code: expected %d, got %d; body: %s", i+1, tc.status, rec.Code, rec.Body.String())
}
}
if withConsistencyDelay {
time.Sleep(50 * time.Millisecond)
}
// Test that each time series is stored
// the correct amount of times in each fake DB.
for _, ts := range tc.wreq.Timeseries {
lset := make(labels.Labels, len(ts.Labels))
for j := range ts.Labels {
lset[j] = labels.Label{
Name: ts.Labels[j].Name,
Value: ts.Labels[j].Value,
}
}
for j, a := range tc.appendables {
if withConsistencyDelay {
var expected int
n := a.appender.(*fakeAppender).Get(lset)
got := uint64(len(n))
if a.appenderErr == nil && endpointHit(t, hashring, tc.replicationFactor, handlers[j].options.Endpoint, tenant, &ts) {
// We have len(handlers) copies of each sample because the test case
// is run once for each handler and they all use the same appender.
expected = len(handlers) * len(ts.Samples)
}
if uint64(expected) != got {
t.Errorf("handler: %d, labels %q: expected %d samples, got %d", j, lset.String(), expected, got)
}
} else {
var expectedMin int
n := a.appender.(*fakeAppender).Get(lset)
got := uint64(len(n))
if a.appenderErr == nil && endpointHit(t, hashring, tc.replicationFactor, handlers[j].options.Endpoint, tenant, &ts) {
// We have len(handlers) copies of each sample because the test case
// is run once for each handler and they all use the same appender.
expectedMin = int((tc.replicationFactor/2)+1) * len(ts.Samples)
}
if uint64(expectedMin) > got {
t.Errorf("handler: %d, labels %q: expected minimum of %d samples, got %d", j, lset.String(), expectedMin, got)
}
}
}
}
})
}
}
func TestReceiveQuorumHashmod(t *testing.T) {
testReceiveQuorum(t, AlgorithmHashmod, false)
}
func TestReceiveQuorumKetama(t *testing.T) {
testReceiveQuorum(t, AlgorithmKetama, false)
}
func TestReceiveWithConsistencyDelayHashmod(t *testing.T) {
testReceiveQuorum(t, AlgorithmHashmod, true)
}
func TestReceiveWithConsistencyDelayKetama(t *testing.T) {
testReceiveQuorum(t, AlgorithmKetama, true)
}
func TestReceiveWriteRequestLimits(t *testing.T) {
for _, tc := range []struct {
name string
status int
amountSeries int
amountSamples int
}{
{
name: "Request above limit of series",
status: http.StatusRequestEntityTooLarge,
amountSeries: 21,
},
{
name: "Request under the limit of series",
status: http.StatusOK,
amountSeries: 20,
},
{
name: "Request above limit of samples (series * samples)",
status: http.StatusRequestEntityTooLarge,
amountSeries: 30,
amountSamples: 15,
},
{
name: "Request under the limit of samples (series * samples)",
status: http.StatusOK,
amountSeries: 10,
amountSamples: 2,
},
{
name: "Request above body size limit",
status: http.StatusRequestEntityTooLarge,
amountSeries: 300,
amountSamples: 150,
},
} {
t.Run(tc.name, func(t *testing.T) {
if tc.amountSamples == 0 {
tc.amountSamples = 1
}
appendables := []*fakeAppendable{
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
{
appender: newFakeAppender(nil, nil, nil),
},
}
handlers, _, err := newTestHandlerHashring(appendables, 3, AlgorithmHashmod)
if err != nil {
t.Fatalf("unable to create test handler: %v", err)
}
handler := handlers[0]
tenant := "test"
tenantConfig, err := yaml.Marshal(&RootLimitsConfig{
WriteLimits: WriteLimitsConfig{
TenantsLimits: TenantsWriteLimitsConfig{
tenant: &WriteLimitConfig{
RequestLimits: NewEmptyRequestLimitsConfig().
SetSizeBytesLimit(int64(1 * units.Megabyte)).
SetSeriesLimit(20).
SetSamplesLimit(200),
},
},
},
})
if err != nil {
t.Fatal("handler: failed to generate limit configuration")
}
tmpLimitsPath := path.Join(t.TempDir(), "limits.yaml")
testutil.Ok(t, os.WriteFile(tmpLimitsPath, tenantConfig, 0666))
limitConfig, _ := extkingpin.NewStaticPathContent(tmpLimitsPath)
handler.Limiter, _ = NewLimiter(
limitConfig, nil, RouterIngestor, log.NewNopLogger(),
)
wreq := &prompb.WriteRequest{
Timeseries: []prompb.TimeSeries{},
}
for i := 0; i < tc.amountSeries; i += 1 {
label := labelpb.ZLabel{Name: "foo", Value: "bar"}
series := prompb.TimeSeries{
Labels: []labelpb.ZLabel{label},
}
for j := 0; j < tc.amountSamples; j += 1 {
sample := prompb.Sample{Value: float64(j), Timestamp: int64(j)}
series.Samples = append(series.Samples, sample)
}
wreq.Timeseries = append(wreq.Timeseries, series)
}
// Test that the correct status is returned.
rec, err := makeRequest(handler, tenant, wreq)
if err != nil {
t.Fatalf("handler %d: unexpectedly failed making HTTP request: %v", tc.status, err)
}
if rec.Code != tc.status {
t.Errorf("handler: got unexpected HTTP status code: expected %d, got %d; body: %s", tc.status, rec.Code, rec.Body.String())
}
})
}
}
// endpointHit is a helper to determine if a given endpoint in a hashring would be selected
// for a given time series, tenant, and replication factor.
func endpointHit(t *testing.T, h Hashring, rf uint64, endpoint, tenant string, timeSeries *prompb.TimeSeries) bool {
for i := uint64(0); i < rf; i++ {
e, err := h.GetN(tenant, timeSeries, i)
if err != nil {
t.Fatalf("got unexpected error querying hashring: %v", err)
}
if e == endpoint {
return true
}
}
return false
}
// cycleErrors returns an error generator that cycles through every given error.
func cycleErrors(errs []error) func() error {
var mu sync.Mutex
var i int
return func() error {
mu.Lock()
defer mu.Unlock()
err := errs[i]
i++
if i >= len(errs) {
i = 0
}
return err
}
}
// makeRequest is a helper to make a correct request against a remote write endpoint given a request.
func makeRequest(h *Handler, tenant string, wreq *prompb.WriteRequest) (*httptest.ResponseRecorder, error) {
buf, err := proto.Marshal(wreq)
if err != nil {
return nil, errors.Wrap(err, "marshal request")
}
req, err := http.NewRequest("POST", h.options.Endpoint, bytes.NewBuffer(snappy.Encode(nil, buf)))
if err != nil {
return nil, errors.Wrap(err, "create request")
}
req.Header.Add(h.options.TenantHeader, tenant)
rec := httptest.NewRecorder()
h.receiveHTTP(rec, req)
rec.Flush()
return rec, nil
}
type addrGen struct{ n int }
func (a *addrGen) newAddr() string {
a.n++
return fmt.Sprintf("http://node-%d:%d", a.n, 12345+a.n)
}
type fakeRemoteWriteGRPCServer struct {
h storepb.WriteableStoreServer
}
func (f *fakeRemoteWriteGRPCServer) RemoteWrite(ctx context.Context, in *storepb.WriteRequest, opts ...grpc.CallOption) (*storepb.WriteResponse, error) {
return f.h.RemoteWrite(ctx, in)
}
func BenchmarkHandlerReceiveHTTP(b *testing.B) {
benchmarkHandlerMultiTSDBReceiveRemoteWrite(testutil.NewTB(b))
}
func TestHandlerReceiveHTTP(t *testing.T) {
benchmarkHandlerMultiTSDBReceiveRemoteWrite(testutil.NewTB(t))
}
// tsOverrideTenantStorage is storage that overrides timestamp to make it have consistent interval.
type tsOverrideTenantStorage struct {
TenantStorage
interval int64
}
func (s *tsOverrideTenantStorage) TenantAppendable(tenant string) (Appendable, error) {
a, err := s.TenantStorage.TenantAppendable(tenant)
return &tsOverrideAppendable{Appendable: a, interval: s.interval}, err
}
type tsOverrideAppendable struct {
Appendable
interval int64
}
func (a *tsOverrideAppendable) Appender(ctx context.Context) (storage.Appender, error) {
ret, err := a.Appendable.Appender(ctx)
return &tsOverrideAppender{Appender: ret, interval: a.interval}, err
}
type tsOverrideAppender struct {
storage.Appender
interval int64
}
var cnt int64
func (a *tsOverrideAppender) Append(ref storage.SeriesRef, l labels.Labels, _ int64, v float64) (storage.SeriesRef, error) {
cnt += a.interval
return a.Appender.Append(ref, l, cnt, v)
}
func (a *tsOverrideAppender) GetRef(lset labels.Labels, hash uint64) (storage.SeriesRef, labels.Labels) {
return a.Appender.(storage.GetRef).GetRef(lset, hash)
}
// serializeSeriesWithOneSample returns marshaled and compressed remote write requests like it would
// be sent to Thanos receive.
// It has one sample and allow passing multiple series, in same manner as typical Prometheus would batch it.
func serializeSeriesWithOneSample(t testing.TB, series [][]labelpb.ZLabel) []byte {
r := &prompb.WriteRequest{Timeseries: make([]prompb.TimeSeries, 0, len(series))}
for _, s := range series {
r.Timeseries = append(r.Timeseries, prompb.TimeSeries{
Labels: s,
// Timestamp does not matter, it will be overridden.
Samples: []prompb.Sample{{Value: math.MaxFloat64, Timestamp: math.MinInt64}},
})
}
body, err := proto.Marshal(r)
testutil.Ok(t, err)
return snappy.Encode(nil, body)
}
func makeSeriesWithValues(numSeries int) []prompb.TimeSeries {
series := make([]prompb.TimeSeries, numSeries)
for i := 0; i < numSeries; i++ {
series[i] = prompb.TimeSeries{
Labels: []labelpb.ZLabel{
{
Name: fmt.Sprintf("pod-%d", i),
Value: fmt.Sprintf("nginx-%d", i),
},
},
Samples: []prompb.Sample{
{
Value: float64(i),
Timestamp: 10,
},
},
}
}
return series
}
func benchmarkHandlerMultiTSDBReceiveRemoteWrite(b testutil.TB) {
dir := b.TempDir()
handlers, _, err := newTestHandlerHashring([]*fakeAppendable{nil}, 1, AlgorithmHashmod)
if err != nil {
b.Fatalf("unable to create test handler: %v", err)
}
handler := handlers[0]
reg := prometheus.NewRegistry()
logger := log.NewNopLogger()
m := NewMultiTSDB(
dir, logger, reg, &tsdb.Options{
MinBlockDuration: int64(2 * time.Hour / time.Millisecond),
MaxBlockDuration: int64(2 * time.Hour / time.Millisecond),
RetentionDuration: int64(6 * time.Hour / time.Millisecond),
NoLockfile: true,
StripeSize: 1, // Disable stripe pre allocation so we can have clear profiles.
},
labels.FromStrings("replica", "01"),
"tenant_id",
nil,
false,
metadata.NoneFunc,
)
defer func() { testutil.Ok(b, m.Close()) }()
handler.writer = NewWriter(logger, m, &WriterOptions{})
testutil.Ok(b, m.Flush())
testutil.Ok(b, m.Open())
for _, tcase := range []struct {
name string
writeRequest []byte
}{
{
name: "typical labels under 1KB, 500 of them",
writeRequest: serializeSeriesWithOneSample(b, func() [][]labelpb.ZLabel {
series := make([][]labelpb.ZLabel, 500)
for s := 0; s < len(series); s++ {
lbls := make([]labelpb.ZLabel, 10)
for i := 0; i < len(lbls); i++ {
// Label ~20B name, 50B value.
lbls[i] = labelpb.ZLabel{Name: fmt.Sprintf("abcdefghijabcdefghijabcdefghij%d", i), Value: fmt.Sprintf("abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij%d", i)}
}
series[s] = lbls
}
return series
}()),
},
{
name: "typical labels under 1KB, 5000 of them",
writeRequest: serializeSeriesWithOneSample(b, func() [][]labelpb.ZLabel {
series := make([][]labelpb.ZLabel, 5000)
for s := 0; s < len(series); s++ {
lbls := make([]labelpb.ZLabel, 10)
for i := 0; i < len(lbls); i++ {
// Label ~20B name, 50B value.
lbls[i] = labelpb.ZLabel{Name: fmt.Sprintf("abcdefghijabcdefghijabcdefghij%d", i), Value: fmt.Sprintf("abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij%d", i)}
}
series[s] = lbls
}
return series
}()),
},
{
name: "typical labels under 1KB, 20000 of them",
writeRequest: serializeSeriesWithOneSample(b, func() [][]labelpb.ZLabel {
series := make([][]labelpb.ZLabel, 20000)
for s := 0; s < len(series); s++ {
lbls := make([]labelpb.ZLabel, 10)
for i := 0; i < len(lbls); i++ {
// Label ~20B name, 50B value.