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loki/pkg/querier/queryrange/roundtrip_test.go

320 lines
7.7 KiB

package queryrange
import (
"context"
"net/http"
"net/http/httptest"
"net/url"
"sync"
"testing"
"time"
"github.com/cortexproject/cortex/pkg/chunk/cache"
"github.com/cortexproject/cortex/pkg/querier/queryrange"
"github.com/cortexproject/cortex/pkg/util"
"github.com/grafana/loki/pkg/logproto"
"github.com/grafana/loki/pkg/logql"
"github.com/grafana/loki/pkg/logql/marshal"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/promql"
"github.com/stretchr/testify/require"
"github.com/weaveworks/common/middleware"
"github.com/weaveworks/common/user"
)
var (
testTime = time.Date(2019, 12, 02, 11, 10, 10, 10, time.UTC)
testConfig = Config{queryrange.Config{
SplitQueriesByInterval: 4 * time.Hour,
AlignQueriesWithStep: true,
MaxRetries: 3,
CacheResults: true,
ResultsCacheConfig: queryrange.ResultsCacheConfig{
MaxCacheFreshness: 1 * time.Minute,
SplitInterval: 4 * time.Hour,
CacheConfig: cache.Config{
EnableFifoCache: true,
Fifocache: cache.FifoCacheConfig{
Size: 1024,
Validity: 24 * time.Hour,
},
},
},
}}
matrix = promql.Matrix{
{
Points: []promql.Point{
{
T: toMs(testTime.Add(-4 * time.Hour)),
V: 0.013333333333333334,
},
},
Metric: []labels.Label{
{
Name: "filename",
Value: `/var/hostlog/apport.log`,
},
{
Name: "job",
Value: "varlogs",
},
},
},
}
streams = logql.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"}`,
},
}
)
// those tests are mostly for testing the glue between all component and make sure they activate correctly.
func TestMetricsTripperware(t *testing.T) {
tpw, stopper, err := NewTripperware(testConfig, util.Logger, fakeLimits{})
if stopper != nil {
defer func() { _ = 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",
}
ctx := user.InjectOrgID(context.Background(), "1")
req, err := lokiCodec.EncodeRequest(ctx, lreq)
require.NoError(t, err)
req = req.WithContext(ctx)
err = user.InjectOrgIDIntoHTTPRequest(ctx, req)
require.NoError(t, err)
rt, err := newfakeRoundTripper()
require.NoError(t, err)
// testing retry
retries, h := counter()
rt.setHandler(h)
_, err = tpw(rt).RoundTrip(req)
// 3 retries configured.
require.GreaterOrEqual(t, *retries, 3)
require.Error(t, err)
rt.Close()
rt, err = newfakeRoundTripper()
require.NoError(t, err)
defer rt.Close()
// testing split interval
count, h := promqlResult(matrix)
rt.setHandler(h)
resp, err := tpw(rt).RoundTrip(req)
// 2 queries
require.Equal(t, 2, *count)
require.NoError(t, err)
lokiResponse, err := lokiCodec.DecodeResponse(ctx, resp, lreq)
require.NoError(t, err)
// testing cache
count, h = counter()
rt.setHandler(h)
cacheResp, err := tpw(rt).RoundTrip(req)
// 0 queries result are cached.
require.Equal(t, 0, *count)
require.NoError(t, err)
lokiCacheResponse, err := lokiCodec.DecodeResponse(ctx, cacheResp, lreq)
require.NoError(t, err)
require.Equal(t, lokiResponse, lokiCacheResponse)
}
func TestLogFilterTripperware(t *testing.T) {
tpw, stopper, err := NewTripperware(testConfig, util.Logger, fakeLimits{})
if stopper != nil {
defer func() { _ = stopper.Stop() }()
}
require.NoError(t, err)
rt, err := newfakeRoundTripper()
require.NoError(t, err)
defer rt.Close()
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",
}
ctx := user.InjectOrgID(context.Background(), "1")
req, err := lokiCodec.EncodeRequest(ctx, lreq)
require.NoError(t, err)
req = req.WithContext(ctx)
err = user.InjectOrgIDIntoHTTPRequest(ctx, req)
require.NoError(t, err)
//testing limit
count, h := promqlResult(streams)
rt.setHandler(h)
_, err = tpw(rt).RoundTrip(req)
require.Equal(t, 0, *count)
require.Error(t, err)
// set the query length back to normal
lreq.StartTs = testTime.Add(-6 * time.Hour)
req, err = lokiCodec.EncodeRequest(ctx, lreq)
require.NoError(t, err)
// testing retry
retries, h := counter()
rt.setHandler(h)
_, err = tpw(rt).RoundTrip(req)
require.GreaterOrEqual(t, *retries, 3)
require.Error(t, err)
}
func TestLogNoRegex(t *testing.T) {
tpw, stopper, err := NewTripperware(testConfig, util.Logger, fakeLimits{})
if stopper != nil {
defer func() { _ = stopper.Stop() }()
}
require.NoError(t, err)
rt, err := newfakeRoundTripper()
require.NoError(t, err)
defer rt.Close()
lreq := &LokiRequest{
Query: `{app="foo"}`, // no regex so it should go to the querier
Limit: 1000,
StartTs: testTime.Add(-6 * time.Hour),
EndTs: testTime,
Direction: logproto.FORWARD,
Path: "/loki/api/v1/query_range",
}
ctx := user.InjectOrgID(context.Background(), "1")
req, err := lokiCodec.EncodeRequest(ctx, lreq)
require.NoError(t, err)
req = req.WithContext(ctx)
err = user.InjectOrgIDIntoHTTPRequest(ctx, req)
require.NoError(t, err)
count, h := promqlResult(streams)
rt.setHandler(h)
_, err = tpw(rt).RoundTrip(req)
require.Equal(t, 1, *count)
require.NoError(t, err)
}
func TestUnhandledPath(t *testing.T) {
tpw, stopper, err := NewTripperware(testConfig, util.Logger, fakeLimits{})
if stopper != nil {
defer func() { _ = stopper.Stop() }()
}
require.NoError(t, err)
rt, err := newfakeRoundTripper()
require.NoError(t, err)
defer rt.Close()
ctx := user.InjectOrgID(context.Background(), "1")
req, err := http.NewRequest(http.MethodGet, "/loki/api/v1/labels", nil)
require.NoError(t, err)
req = req.WithContext(ctx)
err = user.InjectOrgIDIntoHTTPRequest(ctx, req)
require.NoError(t, err)
count, h := errorResult()
rt.setHandler(h)
_, err = tpw(rt).RoundTrip(req)
require.Equal(t, 1, *count)
require.NoError(t, err)
}
type fakeLimits struct{}
func (fakeLimits) MaxQueryLength(string) time.Duration {
return time.Hour * 7
}
func (fakeLimits) MaxQueryParallelism(string) int {
return 1
}
func counter() (*int, http.Handler) {
count := 0
var lock sync.Mutex
return &count, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
lock.Lock()
defer lock.Unlock()
count++
})
}
func errorResult() (*int, http.Handler) {
count := 0
var lock sync.Mutex
return &count, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
lock.Lock()
defer lock.Unlock()
count++
w.WriteHeader(http.StatusInternalServerError)
})
}
func promqlResult(v promql.Value) (*int, http.Handler) {
count := 0
var lock sync.Mutex
return &count, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
lock.Lock()
defer lock.Unlock()
if err := marshal.WriteQueryResponseJSON(v, w); err != nil {
panic(err)
}
count++
})
}
type fakeRoundTripper struct {
*httptest.Server
host string
}
func newfakeRoundTripper() (*fakeRoundTripper, error) {
s := httptest.NewServer(nil)
u, err := url.Parse(s.URL)
if err != nil {
return nil, err
}
return &fakeRoundTripper{
Server: s,
host: u.Host,
}, nil
}
func (s *fakeRoundTripper) setHandler(h http.Handler) {
s.Config.Handler = middleware.AuthenticateUser.Wrap(h)
}
func (s fakeRoundTripper) RoundTrip(r *http.Request) (*http.Response, error) {
r.URL.Scheme = "http"
r.URL.Host = s.host
return http.DefaultTransport.RoundTrip(r)
}
func toMs(t time.Time) int64 {
return t.UnixNano() / (int64(time.Millisecond) / int64(time.Nanosecond))
}