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roundtrip_test.go
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package queryrange
import (
"context"
"errors"
"fmt"
"math"
"net/http"
"sort"
"sync"
"testing"
"time"
"github.com/grafana/dskit/httpgrpc"
"github.com/grafana/dskit/user"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/promql"
"github.com/prometheus/prometheus/promql/parser"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/grafana/loki/v3/pkg/loghttp"
"github.com/grafana/loki/v3/pkg/logproto"
"github.com/grafana/loki/v3/pkg/logql"
"github.com/grafana/loki/v3/pkg/logql/syntax"
"github.com/grafana/loki/v3/pkg/logqlmodel"
"github.com/grafana/loki/v3/pkg/logqlmodel/stats"
"github.com/grafana/loki/v3/pkg/querier/plan"
base "github.com/grafana/loki/v3/pkg/querier/queryrange/queryrangebase"
"github.com/grafana/loki/v3/pkg/storage/chunk/cache"
"github.com/grafana/loki/v3/pkg/storage/chunk/cache/resultscache"
"github.com/grafana/loki/v3/pkg/storage/config"
"github.com/grafana/loki/v3/pkg/storage/stores/index/seriesvolume"
"github.com/grafana/loki/v3/pkg/util"
"github.com/grafana/loki/v3/pkg/util/constants"
util_log "github.com/grafana/loki/v3/pkg/util/log"
"github.com/grafana/loki/v3/pkg/util/validation"
valid "github.com/grafana/loki/v3/pkg/validation"
)
var (
testTime = time.Date(2019, 12, 2, 11, 10, 10, 10, time.UTC)
testConfig = Config{
Config: base.Config{
AlignQueriesWithStep: true,
MaxRetries: 3,
CacheResults: true,
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 1024,
TTL: 24 * time.Hour,
},
},
},
},
},
Transformer: nil,
CacheIndexStatsResults: true,
StatsCacheConfig: IndexStatsCacheConfig{
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 1024,
TTL: 24 * time.Hour,
},
},
},
},
},
VolumeCacheConfig: VolumeCacheConfig{
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 1024,
TTL: 24 * time.Hour,
},
},
},
},
},
CacheInstantMetricResults: true,
InstantMetricQuerySplitAlign: true,
InstantMetricCacheConfig: InstantMetricCacheConfig{
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 1024,
TTL: 24 * time.Hour,
},
},
},
},
},
}
testEngineOpts = logql.EngineOpts{
MaxLookBackPeriod: 30 * time.Second,
LogExecutingQuery: false,
}
matrix = promql.Matrix{
{
Floats: []promql.FPoint{
{
T: toMs(testTime.Add(-4 * time.Hour)),
F: 0.013333333333333334,
},
},
Metric: []labels.Label{
{
Name: "filename",
Value: `/var/hostlog/apport.log`,
},
{
Name: "job",
Value: "varlogs",
},
},
},
}
vector = promql.Vector{
{
T: toMs(testTime.Add(-4 * time.Hour)),
F: 0.013333333333333334,
Metric: []labels.Label{
{
Name: "filename",
Value: `/var/hostlog/apport.log`,
},
{
Name: "job",
Value: "varlogs",
},
},
},
}
streams = logqlmodel.Streams{
{
Entries: []logproto.Entry{
{Timestamp: testTime.Add(-4 * time.Hour), Line: "foo"},
{Timestamp: testTime.Add(-1 * time.Hour), Line: "barr"},
},
Labels: `{filename="/var/hostlog/apport.log", job="varlogs"}`,
},
}
series = logproto.SeriesResponse{
Series: []logproto.SeriesIdentifier{
{
Labels: []logproto.SeriesIdentifier_LabelsEntry{
{Key: "filename", Value: "/var/hostlog/apport.log"},
{Key: "job", Value: "varlogs"},
},
},
{
Labels: []logproto.SeriesIdentifier_LabelsEntry{
{Key: "filename", Value: "/var/hostlog/test.log"},
{Key: "job", Value: "varlogs"},
},
},
},
}
seriesVolume = logproto.VolumeResponse{
Volumes: []logproto.Volume{
{Name: `{foo="bar"}`, Volume: 1024},
{Name: `{bar="baz"}`, Volume: 3350},
},
Limit: 5,
}
)
func getQueryAndStatsHandler(queryHandler, statsHandler base.Handler) base.Handler {
return base.HandlerFunc(func(ctx context.Context, r base.Request) (base.Response, error) {
switch r.(type) {
case *logproto.IndexStatsRequest:
return statsHandler.Do(ctx, r)
case *LokiRequest, *LokiInstantRequest:
return queryHandler.Do(ctx, r)
}
return nil, fmt.Errorf("Request not supported: %T", r)
})
}
// those tests are mostly for testing the glue between all component and make sure they activate correctly.
func TestMetricsTripperware(t *testing.T) {
var l Limits = fakeLimits{
maxSeries: math.MaxInt32,
maxQueryParallelism: 1,
tsdbMaxQueryParallelism: 1,
maxQueryBytesRead: 1000,
maxQuerierBytesRead: 100,
}
l = WithSplitByLimits(l, 4*time.Hour)
noCacheTestCfg := testConfig
noCacheTestCfg.CacheResults = false
noCacheTestCfg.CacheIndexStatsResults = false
tpw, stopper, err := NewMiddleware(noCacheTestCfg, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{
Configs: testSchemasTSDB,
}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := &LokiRequest{
Query: `rate({app="foo"} |= "foo"[1m])`,
Limit: 1000,
Step: 30000, // 30sec
StartTs: testTime.Add(-6 * time.Hour),
EndTs: testTime,
Direction: logproto.FORWARD,
Path: "/query_range",
Plan: &plan.QueryPlan{
AST: syntax.MustParseExpr(`rate({app="foo"} |= "foo"[1m])`),
},
}
ctx := user.InjectOrgID(context.Background(), "1")
// Test MaxQueryBytesRead limit
statsCount, statsHandler := indexStatsResult(logproto.IndexStatsResponse{Bytes: 2000})
queryCount, queryHandler := counter()
h := getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 1, *statsCount)
require.Equal(t, 0, *queryCount)
// Test MaxQuerierBytesRead limit
statsCount, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 200})
queryCount, queryHandler = counter()
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.ErrorContains(t, err, "query too large to execute on a single querier")
require.Equal(t, 0, *queryCount)
require.Equal(t, 2, *statsCount)
// testing retry
_, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
retries, queryHandler := counterWithError(errors.New("handle error"))
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
// 3 retries configured.
require.GreaterOrEqual(t, *retries, 3)
require.Error(t, err)
// Configure with cache
tpw, stopper, err = NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{
Configs: testSchemasTSDB,
}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
// testing split interval
_, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
count, queryHandler := promqlResult(matrix)
h = getQueryAndStatsHandler(queryHandler, statsHandler)
lokiResponse, err := tpw.Wrap(h).Do(ctx, lreq)
// 2 queries
require.Equal(t, 2, *count)
require.NoError(t, err)
// testing cache
count, queryHandler = counter()
h = getQueryAndStatsHandler(queryHandler, statsHandler)
lokiCacheResponse, err := tpw.Wrap(h).Do(ctx, lreq)
// 0 queries result are cached.
require.Equal(t, 0, *count)
require.NoError(t, err)
require.Equal(t, lokiResponse.(*LokiPromResponse).Response, lokiCacheResponse.(*LokiPromResponse).Response)
}
func TestLogFilterTripperware(t *testing.T) {
var l Limits = fakeLimits{
maxQueryParallelism: 1,
tsdbMaxQueryParallelism: 1,
maxQueryBytesRead: 1000,
maxQuerierBytesRead: 100,
}
noCacheTestCfg := testConfig
noCacheTestCfg.CacheResults = false
noCacheTestCfg.CacheIndexStatsResults = false
tpw, stopper, err := NewMiddleware(noCacheTestCfg, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{Configs: testSchemasTSDB}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := &LokiRequest{
Query: `{app="foo"} |= "foo"`,
Limit: 1000,
StartTs: testTime.Add(-10 * time.Hour), // bigger than the limit
EndTs: testTime,
Direction: logproto.FORWARD,
Path: "/loki/api/v1/query_range",
Plan: &plan.QueryPlan{
AST: syntax.MustParseExpr(`{app="foo"} |= "foo"`),
},
}
ctx := user.InjectOrgID(context.Background(), "1")
// testing limit
count, h := promqlResult(streams)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Equal(t, 0, *count)
require.Error(t, err)
// set the query length back to normal
lreq.StartTs = testTime.Add(-6 * time.Hour)
// testing retry
_, statsHandler := indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
retries, queryHandler := counterWithError(errors.New("handler failed"))
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.GreaterOrEqual(t, *retries, 3)
require.Error(t, err)
// Test MaxQueryBytesRead limit
statsCount, statsHandler := indexStatsResult(logproto.IndexStatsResponse{Bytes: 2000})
queryCount, queryHandler := counter()
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 1, *statsCount)
require.Equal(t, 0, *queryCount)
// Test MaxQuerierBytesRead limit
statsCount, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 200})
queryCount, queryHandler = counter()
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 2, *statsCount)
require.Equal(t, 0, *queryCount)
}
func TestInstantQueryTripperwareResultCaching(t *testing.T) {
// Goal is to make sure the instant query tripperware returns same results with and without cache middleware.
// 1. Get result without cache middleware.
// 2. Get result with middelware (with splitting). Result should be same.
// 3. Make same query with middleware (this time hitting the cache). Result should be same.
testLocal := testConfig
testLocal.ShardedQueries = true
testLocal.CacheResults = false
testLocal.CacheIndexStatsResults = false
testLocal.CacheInstantMetricResults = false
l := fakeLimits{
maxQueryParallelism: 1,
tsdbMaxQueryParallelism: 1,
maxQueryBytesRead: 1000,
maxQuerierBytesRead: 100,
queryTimeout: 1 * time.Minute,
maxSeries: 1,
}
tpw, stopper, err := NewMiddleware(testLocal, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{Configs: testSchemasTSDB}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
q := `sum by (job) (bytes_rate({cluster="dev-us-central-0"}[15m]))`
lreq := &LokiInstantRequest{
Query: q,
Limit: 1000,
TimeTs: testTime.Add(-4 * time.Hour),
Direction: logproto.FORWARD,
Path: "/loki/api/v1/query",
Plan: &plan.QueryPlan{
AST: syntax.MustParseExpr(q),
},
}
ctx := user.InjectOrgID(context.Background(), "1")
// Test MaxQueryBytesRead limit
statsCount, statsHandler := indexStatsResult(logproto.IndexStatsResponse{Bytes: 2000})
queryCount, queryHandler := counter()
h := getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 1, *statsCount)
require.Equal(t, 0, *queryCount)
// Test MaxQuerierBytesRead limit
statsCount, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 200})
queryCount, queryHandler = counter()
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 2, *statsCount)
require.Equal(t, 0, *queryCount)
// 1. Without cache middleware.
count, queryHandler := promqlResult(vector)
_, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
h = getQueryAndStatsHandler(queryHandler, statsHandler)
h = tpw.Wrap(h)
lokiResponse, err := h.Do(ctx, lreq)
require.Equal(t, 1, *count)
require.NoError(t, err)
exp, err := ResultToResponse(logqlmodel.Result{
Data: vector,
}, nil)
require.NoError(t, err)
expected := exp.(*LokiPromResponse)
require.IsType(t, &LokiPromResponse{}, lokiResponse)
concrete := lokiResponse.(*LokiPromResponse)
require.Equal(t, loghttp.ResultTypeVector, concrete.Response.Data.ResultType)
assertInstantSampleValues(t, expected, concrete) // assert actual sample values
// 2. First time with caching enabled (no cache hit).
testLocal.CacheInstantMetricResults = true
l.instantMetricSplitDuration = map[string]time.Duration{
// so making request [15] range, will have 2 subqueries aligned with [5m] giving total of [10m]. And 2 more subqueries for remaining [5m] aligning depending on exec time of the query.
"1": 5 * time.Minute,
}
tpw, stopper, err = NewMiddleware(testLocal, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{Configs: testSchemasTSDB}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
count, queryHandler = promqlResult(vector)
_, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
h = getQueryAndStatsHandler(queryHandler, statsHandler)
lokiResponse, err = tpw.Wrap(h).Do(ctx, lreq)
require.Equal(t, 4, *count) // split into 4 subqueries. like explained in `instantMetricSplitDuration` limits config.
require.NoError(t, err)
exp, err = ResultToResponse(logqlmodel.Result{
Data: instantQueryResultWithCache(*count, 15*time.Minute, vector[0]),
}, nil)
require.NoError(t, err)
expected = exp.(*LokiPromResponse)
require.IsType(t, &LokiPromResponse{}, lokiResponse)
concrete = lokiResponse.(*LokiPromResponse)
require.Equal(t, loghttp.ResultTypeVector, concrete.Response.Data.ResultType)
assertInstantSampleValues(t, expected, concrete) // assert actual sample values
// 3. Second time with caching enabled (cache hit).
count, queryHandler = promqlResult(vector)
_, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
h = getQueryAndStatsHandler(queryHandler, statsHandler)
lokiResponse, err = tpw.Wrap(h).Do(ctx, lreq)
require.Equal(t, 0, *count) // no queries hit base handler, because all queries hit from cache.
require.NoError(t, err)
require.IsType(t, &LokiPromResponse{}, lokiResponse)
concrete = lokiResponse.(*LokiPromResponse)
require.Equal(t, loghttp.ResultTypeVector, concrete.Response.Data.ResultType)
assertInstantSampleValues(t, expected, concrete) // assert actual sample values
}
func TestInstantQueryTripperware(t *testing.T) {
testShardingConfigNoCache := testConfig
testShardingConfigNoCache.ShardedQueries = true
testShardingConfigNoCache.CacheResults = false
testShardingConfigNoCache.CacheIndexStatsResults = false
var l Limits = fakeLimits{
maxQueryParallelism: 1,
tsdbMaxQueryParallelism: 1,
maxQueryBytesRead: 1000,
maxQuerierBytesRead: 100,
queryTimeout: 1 * time.Minute,
maxSeries: 1,
}
tpw, stopper, err := NewMiddleware(testShardingConfigNoCache, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{Configs: testSchemasTSDB}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
q := `sum by (job) (bytes_rate({cluster="dev-us-central-0"}[15m]))`
lreq := &LokiInstantRequest{
Query: q,
Limit: 1000,
TimeTs: testTime.Add(-4 * time.Hour), // because vector data we return from mock handler has that time.
Direction: logproto.FORWARD,
Path: "/loki/api/v1/query",
Plan: &plan.QueryPlan{
AST: syntax.MustParseExpr(q),
},
}
ctx := user.InjectOrgID(context.Background(), "1")
// Test MaxQueryBytesRead limit
statsCount, statsHandler := indexStatsResult(logproto.IndexStatsResponse{Bytes: 2000})
queryCount, queryHandler := counter()
h := getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 1, *statsCount)
require.Equal(t, 0, *queryCount)
// Test MaxQuerierBytesRead limit
statsCount, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 200})
queryCount, queryHandler = counter()
h = getQueryAndStatsHandler(queryHandler, statsHandler)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Error(t, err)
require.Equal(t, 2, *statsCount)
require.Equal(t, 0, *queryCount)
count, queryHandler := promqlResult(vector)
_, statsHandler = indexStatsResult(logproto.IndexStatsResponse{Bytes: 10})
h = getQueryAndStatsHandler(queryHandler, statsHandler)
lokiResponse, err := tpw.Wrap(h).Do(ctx, lreq)
require.Equal(t, 1, *count)
require.NoError(t, err)
require.IsType(t, &LokiPromResponse{}, lokiResponse)
concrete := lokiResponse.(*LokiPromResponse)
require.Equal(t, loghttp.ResultTypeVector, concrete.Response.Data.ResultType)
}
func TestSeriesTripperware(t *testing.T) {
l := fakeLimits{
maxQueryLength: 48 * time.Hour,
maxQueryParallelism: 1,
metadataSplitDuration: map[string]time.Duration{
"1": 24 * time.Hour,
},
}
tpw, stopper, err := NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := &LokiSeriesRequest{
Match: []string{`{job="varlogs"}`},
StartTs: testTime.Add(-25 * time.Hour), // bigger than split by interval limit
EndTs: testTime,
Path: "/loki/api/v1/series",
}
ctx := user.InjectOrgID(context.Background(), "1")
count, h := seriesResult(series)
lokiSeriesResponse, err := tpw.Wrap(h).Do(ctx, lreq)
require.NoError(t, err)
// 2 queries
require.Equal(t, 2, *count)
res, ok := lokiSeriesResponse.(*LokiSeriesResponse)
require.True(t, ok)
// make sure we return unique series since responses from
// SplitByInterval middleware might have duplicate series
require.Equal(t, series.Series, res.Data)
require.NoError(t, err)
}
func TestLabelsTripperware(t *testing.T) {
l := fakeLimits{
maxQueryLength: 48 * time.Hour,
maxQueryParallelism: 1,
metadataSplitDuration: map[string]time.Duration{
"1": 24 * time.Hour,
},
}
tpw, stopper, err := NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, l, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := NewLabelRequest(
testTime.Add(-25*time.Hour), // bigger than the limit
testTime,
"",
"",
"/loki/api/v1/labels",
)
ctx := user.InjectOrgID(context.Background(), "1")
handler := newFakeHandler(
// we expect 2 calls.
base.HandlerFunc(func(_ context.Context, _ base.Request) (base.Response, error) {
return &LokiLabelNamesResponse{
Status: "success",
Data: []string{"foo", "bar", "blop"},
Version: uint32(1),
}, nil
}),
base.HandlerFunc(func(_ context.Context, _ base.Request) (base.Response, error) {
return &LokiLabelNamesResponse{
Status: "success",
Data: []string{"foo", "bar", "blip"},
Version: uint32(1),
}, nil
}),
)
lokiLabelsResponse, err := tpw.Wrap(handler).Do(ctx, lreq)
require.NoError(t, err)
// verify 2 calls have been made to downstream.
require.Equal(t, 2, handler.count)
res, ok := lokiLabelsResponse.(*LokiLabelNamesResponse)
require.True(t, ok)
require.Equal(t, []string{"foo", "bar", "blop", "blip"}, res.Data)
require.Equal(t, "success", res.Status)
require.NoError(t, err)
}
func TestIndexStatsTripperware(t *testing.T) {
tpw, stopper, err := NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, fakeLimits{maxQueryLength: 48 * time.Hour, maxQueryParallelism: 1}, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := &logproto.IndexStatsRequest{
Matchers: `{job="varlogs"}`,
From: model.TimeFromUnixNano(testTime.Add(-25 * time.Hour).UnixNano()), // bigger than split by interval limit
Through: model.TimeFromUnixNano(testTime.UnixNano()),
}
ctx := user.InjectOrgID(context.Background(), "1")
response := logproto.IndexStatsResponse{
Streams: 100,
Chunks: 200,
Bytes: 300,
Entries: 400,
}
count, h := indexStatsResult(response)
_, err = tpw.Wrap(h).Do(ctx, lreq)
// 2 queries
require.Equal(t, 2, *count)
require.NoError(t, err)
// Test the cache.
// It should have the answer already so the query handler shouldn't be hit
count, h = indexStatsResult(response)
indexStatsResponse, err := tpw.Wrap(h).Do(ctx, lreq)
require.NoError(t, err)
require.Equal(t, 0, *count)
// Test the response is the expected
res, ok := indexStatsResponse.(*IndexStatsResponse)
require.Equal(t, true, ok)
require.Equal(t, response.Streams*2, res.Response.Streams)
require.Equal(t, response.Chunks*2, res.Response.Chunks)
require.Equal(t, response.Bytes*2, res.Response.Bytes)
require.Equal(t, response.Entries*2, res.Response.Entries)
}
func TestVolumeTripperware(t *testing.T) {
t.Run("instant queries hardcode step to 0 and return a prometheus style vector response", func(t *testing.T) {
limits := fakeLimits{
maxQueryLength: 48 * time.Hour,
volumeEnabled: true,
maxSeries: 42,
}
tpw, stopper, err := NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, limits, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := &logproto.VolumeRequest{
Matchers: `{job="varlogs"}`,
From: model.TimeFromUnixNano(testTime.Add(-25 * time.Hour).UnixNano()), // bigger than split by interval limit
Through: model.TimeFromUnixNano(testTime.UnixNano()),
Limit: 10,
Step: 0, // Setting this value to 0 is what makes this an instant query
AggregateBy: seriesvolume.DefaultAggregateBy,
}
ctx := user.InjectOrgID(context.Background(), "1")
count, h := seriesVolumeResult(seriesVolume)
volumeResp, err := tpw.Wrap(h).Do(ctx, lreq)
require.NoError(t, err)
require.Equal(t, 2, *count) // 2 queries from splitting
expected := base.PrometheusData{
ResultType: loghttp.ResultTypeVector,
Result: []base.SampleStream{
{
Labels: []logproto.LabelAdapter{{
Name: "bar",
Value: "baz",
}},
Samples: []logproto.LegacySample{{
Value: 6700,
TimestampMs: testTime.Unix() * 1e3,
}},
},
{
Labels: []logproto.LabelAdapter{{
Name: "foo",
Value: "bar",
}},
Samples: []logproto.LegacySample{{
Value: 2048,
TimestampMs: testTime.Unix() * 1e3,
}},
},
},
}
res, ok := volumeResp.(*LokiPromResponse)
require.Equal(t, true, ok)
require.Equal(t, "success", res.Response.Status)
require.Equal(t, expected, res.Response.Data)
})
t.Run("range queries return a prometheus style metrics response, putting volumes in buckets based on the step", func(t *testing.T) {
tpw, stopper, err := NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, fakeLimits{maxQueryLength: 48 * time.Hour, volumeEnabled: true}, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
start := testTime.Add(-5 * time.Hour)
end := testTime
lreq := &logproto.VolumeRequest{
Matchers: `{job="varlogs"}`,
From: model.TimeFromUnixNano(start.UnixNano()), // bigger than split by interval limit
Through: model.TimeFromUnixNano(end.UnixNano()),
Step: time.Hour.Milliseconds(), // a non-zero value makes this a range query
Limit: 10,
AggregateBy: seriesvolume.DefaultAggregateBy,
}
ctx := user.InjectOrgID(context.Background(), "1")
count, h := seriesVolumeResult(seriesVolume)
volumeResp, err := tpw.Wrap(h).Do(ctx, lreq)
require.NoError(t, err)
/*
testTime is 2019-12-02T6:10:10Z
so with a 1 hour split, we expect 6 queries to be made:
6:10 -> 7, 7 -> 8, 8 -> 9, 9 -> 10, 10 -> 11, 11 -> 11:10
*/
require.Equal(t, 6, *count) // 6 queries from splitting into step buckets
barBazExpectedSamples := []logproto.LegacySample{}
util.ForInterval(time.Hour, start, end, true, func(_, e time.Time) {
barBazExpectedSamples = append(barBazExpectedSamples, logproto.LegacySample{
Value: 3350,
TimestampMs: e.UnixMilli(),
})
})
sort.Slice(barBazExpectedSamples, func(i, j int) bool {
return barBazExpectedSamples[i].TimestampMs < barBazExpectedSamples[j].TimestampMs
})
fooBarExpectedSamples := []logproto.LegacySample{}
util.ForInterval(time.Hour, start, end, true, func(_, e time.Time) {
fooBarExpectedSamples = append(fooBarExpectedSamples, logproto.LegacySample{
Value: 1024,
TimestampMs: e.UnixMilli(),
})
})
sort.Slice(fooBarExpectedSamples, func(i, j int) bool {
return fooBarExpectedSamples[i].TimestampMs < fooBarExpectedSamples[j].TimestampMs
})
expected := base.PrometheusData{
ResultType: loghttp.ResultTypeMatrix,
Result: []base.SampleStream{
{
Labels: []logproto.LabelAdapter{{
Name: "bar",
Value: "baz",
}},
Samples: barBazExpectedSamples,
},
{
Labels: []logproto.LabelAdapter{{
Name: "foo",
Value: "bar",
}},
Samples: fooBarExpectedSamples,
},
},
}
res, ok := volumeResp.(*LokiPromResponse)
require.Equal(t, true, ok)
require.Equal(t, "success", res.Response.Status)
require.Equal(t, expected, res.Response.Data)
})
}
func TestNewTripperware_Caches(t *testing.T) {
for _, tc := range []struct {
name string
config Config
numCaches int
err string
}{
{
name: "results cache disabled, stats cache disabled",
config: Config{
Config: base.Config{
CacheResults: false,
},
CacheIndexStatsResults: false,
},
numCaches: 0,
err: "",
},
{
name: "results cache enabled",
config: Config{
Config: base.Config{
CacheResults: true,
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
MaxSizeMB: 1,
Enabled: true,
},
},
},
},
},
},
numCaches: 1,
err: "",
},
{
name: "stats cache enabled",
config: Config{
CacheIndexStatsResults: true,
StatsCacheConfig: IndexStatsCacheConfig{
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 1000,
},
},
},
},
},
},
numCaches: 1,
err: "",
},
{
name: "results cache enabled, stats cache enabled",
config: Config{
Config: base.Config{
CacheResults: true,
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 2000,
},
},
},
},
},
CacheIndexStatsResults: true,
StatsCacheConfig: IndexStatsCacheConfig{
ResultsCacheConfig: base.ResultsCacheConfig{
Config: resultscache.Config{
CacheConfig: cache.Config{
EmbeddedCache: cache.EmbeddedCacheConfig{
Enabled: true,
MaxSizeMB: 1000,
},
},
},
},
},
},
numCaches: 2,
err: "",
},
{
name: "results cache enabled (no config provided)",
config: Config{
Config: base.Config{
CacheResults: true,
},
},
err: fmt.Sprintf("%s cache is not configured", stats.ResultCache),
},
{
name: "stats cache enabled (no config provided)",
config: Config{
CacheIndexStatsResults: true,
},
numCaches: 0,
err: fmt.Sprintf("%s cache is not configured", stats.StatsResultCache),
},
} {
t.Run(tc.name, func(t *testing.T) {
_, stopper, err := NewMiddleware(tc.config, testEngineOpts, nil, util_log.Logger, fakeLimits{maxQueryLength: 48 * time.Hour, maxQueryParallelism: 1}, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
if tc.err != "" {
require.ErrorContains(t, err, tc.err)
return
}
require.NoError(t, err)
require.IsType(t, StopperWrapper{}, stopper)
var caches []cache.Cache
for _, s := range stopper.(StopperWrapper) {
if s != nil {
c, ok := s.(cache.Cache)
require.True(t, ok)
require.NotNil(t, c)
caches = append(caches, c)
}
}
require.Equal(t, tc.numCaches, len(caches))
})
}
}
func TestLogNoFilter(t *testing.T) {
tpw, stopper, err := NewMiddleware(testConfig, testEngineOpts, nil, util_log.Logger, fakeLimits{maxQueryParallelism: 1}, config.SchemaConfig{Configs: testSchemas}, nil, false, nil, constants.Loki)
if stopper != nil {
defer stopper.Stop()
}
require.NoError(t, err)
lreq := &LokiRequest{
Query: `{app="foo"}`,
Limit: 1000,
StartTs: testTime.Add(-6 * time.Hour),
EndTs: testTime,
Direction: logproto.FORWARD,
Path: "/loki/api/v1/query_range",
Plan: &plan.QueryPlan{
AST: syntax.MustParseExpr(`{app="foo"}`),
},
}
ctx := user.InjectOrgID(context.Background(), "1")
count, h := promqlResult(streams)
_, err = tpw.Wrap(h).Do(ctx, lreq)
require.Equal(t, 1, *count)
require.Nil(t, err)
}
func TestPostQueries(t *testing.T) {
lreq := &LokiRequest{
Query: `{app="foo"} |~ "foo"`,
Plan: &plan.QueryPlan{
AST: syntax.MustParseExpr(`{app="foo"} |~ "foo"`),
},
}
ctx := user.InjectOrgID(context.Background(), "1")
handler := base.HandlerFunc(func(context.Context, base.Request) (base.Response, error) {
t.Error("unexpected default roundtripper called")
return nil, nil
})
_, err := newRoundTripper(
util_log.Logger,
handler,
handler,
base.HandlerFunc(func(context.Context, base.Request) (base.Response, error) {
return nil, nil
}),
handler,