package light_test
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import (
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"context"
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"errors"
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"testing"
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"time"
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dbm "github.com/tendermint/tm-db"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/light"
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"github.com/tendermint/tendermint/light/provider"
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dbs "github.com/tendermint/tendermint/light/store/db"
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"github.com/tendermint/tendermint/types"
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)
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// NOTE: block is produced every minute. Make sure the verification time
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// provided in the function call is correct for the size of the blockchain. The
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// benchmarking may take some time hence it can be more useful to set the time
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// or the amount of iterations use the flag -benchtime t -> i.e. -benchtime 5m
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// or -benchtime 100x.
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//
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// Remember that none of these benchmarks account for network latency.
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var ()
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type providerBenchmarkImpl struct {
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currentHeight int64
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blocks map[int64]*types.LightBlock
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}
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func newProviderBenchmarkImpl(headers map[int64]*types.SignedHeader,
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vals map[int64]*types.ValidatorSet) provider.Provider {
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impl := providerBenchmarkImpl{
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blocks: make(map[int64]*types.LightBlock, len(headers)),
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}
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for height, header := range headers {
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if height > impl.currentHeight {
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impl.currentHeight = height
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}
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impl.blocks[height] = &types.LightBlock{
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SignedHeader: header,
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ValidatorSet: vals[height],
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}
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}
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return &impl
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}
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func (impl *providerBenchmarkImpl) LightBlock(ctx context.Context, height int64) (*types.LightBlock, error) {
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if height == 0 {
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return impl.blocks[impl.currentHeight], nil
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}
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lb, ok := impl.blocks[height]
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if !ok {
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return nil, provider.ErrLightBlockNotFound
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}
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return lb, nil
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}
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func (impl *providerBenchmarkImpl) ReportEvidence(_ context.Context, _ types.Evidence) error {
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return errors.New("not implemented")
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}
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func BenchmarkSequence(b *testing.B) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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headers, vals, _ := genLightBlocksWithKeys(b, chainID, 1000, 100, 1, bTime)
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benchmarkFullNode := newProviderBenchmarkImpl(headers, vals)
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genesisBlock, _ := benchmarkFullNode.LightBlock(ctx, 1)
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logger := log.NewTestingLogger(b)
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c, err := light.NewClient(
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ctx,
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chainID,
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light.TrustOptions{
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Period: 24 * time.Hour,
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Height: 1,
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Hash: genesisBlock.Hash(),
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},
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benchmarkFullNode,
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[]provider.Provider{benchmarkFullNode},
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dbs.New(dbm.NewMemDB()),
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light.Logger(logger),
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light.SequentialVerification(),
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)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for n := 0; n < b.N; n++ {
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_, err = c.VerifyLightBlockAtHeight(ctx, 1000, bTime.Add(1000*time.Minute))
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if err != nil {
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b.Fatal(err)
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}
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}
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}
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func BenchmarkBisection(b *testing.B) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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headers, vals, _ := genLightBlocksWithKeys(b, chainID, 1000, 100, 1, bTime)
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benchmarkFullNode := newProviderBenchmarkImpl(headers, vals)
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genesisBlock, _ := benchmarkFullNode.LightBlock(ctx, 1)
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logger := log.NewTestingLogger(b)
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c, err := light.NewClient(
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context.Background(),
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chainID,
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light.TrustOptions{
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Period: 24 * time.Hour,
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Height: 1,
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Hash: genesisBlock.Hash(),
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},
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benchmarkFullNode,
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[]provider.Provider{benchmarkFullNode},
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dbs.New(dbm.NewMemDB()),
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light.Logger(logger),
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)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for n := 0; n < b.N; n++ {
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_, err = c.VerifyLightBlockAtHeight(ctx, 1000, bTime.Add(1000*time.Minute))
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if err != nil {
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b.Fatal(err)
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}
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}
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}
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func BenchmarkBackwards(b *testing.B) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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headers, vals, _ := genLightBlocksWithKeys(b, chainID, 1000, 100, 1, bTime)
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benchmarkFullNode := newProviderBenchmarkImpl(headers, vals)
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trustedBlock, _ := benchmarkFullNode.LightBlock(ctx, 0)
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logger := log.NewTestingLogger(b)
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c, err := light.NewClient(
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ctx,
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chainID,
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light.TrustOptions{
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Period: 24 * time.Hour,
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Height: trustedBlock.Height,
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Hash: trustedBlock.Hash(),
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},
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benchmarkFullNode,
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[]provider.Provider{benchmarkFullNode},
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dbs.New(dbm.NewMemDB()),
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light.Logger(logger),
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)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for n := 0; n < b.N; n++ {
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_, err = c.VerifyLightBlockAtHeight(ctx, 1, bTime)
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if err != nil {
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b.Fatal(err)
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}
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}
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}
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