tempo/modules/frontend/traceid_sharder_test.go at dfe6646f455a4876372d38d65ccc1edc93d42103 · grafana/tempo · GitHub

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package frontend

import (
	"context"
	"net/http/httptest"
	"testing"

	"github.com/grafana/dskit/user"
	"github.com/stretchr/testify/require"

	"github.com/grafana/tempo/modules/frontend/pipeline"
	"github.com/grafana/tempo/pkg/blockboundary"
)

func TestBuildShardedRequests(t *testing.T) {
	queryShards := 2

	sharder := &asyncTraceSharder{
		cfg: &TraceByIDConfig{
			QueryShards: queryShards,
		},
		blockBoundaries: blockboundary.CreateBlockBoundaries(queryShards - 1),
	}

	ctx := user.InjectOrgID(context.Background(), "blerg")
	req := httptest.NewRequest("GET", "/", nil).WithContext(ctx)

	shardedReqs, err := sharder.buildShardedRequests(pipeline.NewHTTPRequest(req))
	require.NoError(t, err)
	require.Len(t, shardedReqs, queryShards)

	require.Equal(t, "/querier?mode=ingesters", shardedReqs[0].HTTPRequest().RequestURI)
	urisEqual(t, []string{"/querier?blockEnd=ffffffffffffffffffffffffffffffff&blockStart=00000000000000000000000000000000&mode=blocks"}, []string{shardedReqs[1].HTTPRequest().RequestURI})
}

func TestBuildShardedRequestsWithExternal(t *testing.T) {
	queryShards := 4

	sharder := &asyncTraceSharder{
		cfg: &TraceByIDConfig{
			QueryShards:     queryShards,
			ExternalEnabled: true,
		},
		blockBoundaries: blockboundary.CreateBlockBoundaries(queryShards - 2),
	}

	ctx := user.InjectOrgID(context.Background(), "blerg")
	req := httptest.NewRequest("GET", "/", nil).WithContext(ctx)

	shardedReqs, err := sharder.buildShardedRequests(pipeline.NewHTTPRequest(req))
	require.NoError(t, err)
	require.Len(t, shardedReqs, queryShards)

	require.Equal(t, "/querier?mode=ingesters", shardedReqs[0].HTTPRequest().RequestURI)
	require.Equal(t, "/querier?mode=external", shardedReqs[1].HTTPRequest().RequestURI)

	// Verify block shard requests
	for i := 2; i < queryShards; i++ {
		require.Contains(t, shardedReqs[i].HTTPRequest().RequestURI, "mode=blocks")
		require.Contains(t, shardedReqs[i].HTTPRequest().RequestURI, "blockStart")
		require.Contains(t, shardedReqs[i].HTTPRequest().RequestURI, "blockEnd")
	}
}