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463 lines
14 KiB
463 lines
14 KiB
package mempool
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import (
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"crypto/rand"
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"crypto/sha256"
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"encoding/binary"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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amino "github.com/tendermint/go-amino"
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"github.com/tendermint/tendermint/abci/example/counter"
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"github.com/tendermint/tendermint/abci/example/kvstore"
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abci "github.com/tendermint/tendermint/abci/types"
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cfg "github.com/tendermint/tendermint/config"
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cmn "github.com/tendermint/tendermint/libs/common"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/proxy"
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"github.com/tendermint/tendermint/types"
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)
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func newMempoolWithApp(cc proxy.ClientCreator) *Mempool {
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config := cfg.ResetTestRoot("mempool_test")
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appConnMem, _ := cc.NewABCIClient()
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appConnMem.SetLogger(log.TestingLogger().With("module", "abci-client", "connection", "mempool"))
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err := appConnMem.Start()
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if err != nil {
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panic(err)
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}
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mempool := NewMempool(config.Mempool, appConnMem, 0)
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mempool.SetLogger(log.TestingLogger())
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return mempool
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}
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func ensureNoFire(t *testing.T, ch <-chan struct{}, timeoutMS int) {
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timer := time.NewTimer(time.Duration(timeoutMS) * time.Millisecond)
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select {
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case <-ch:
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t.Fatal("Expected not to fire")
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case <-timer.C:
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}
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}
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func ensureFire(t *testing.T, ch <-chan struct{}, timeoutMS int) {
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timer := time.NewTimer(time.Duration(timeoutMS) * time.Millisecond)
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select {
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case <-ch:
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case <-timer.C:
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t.Fatal("Expected to fire")
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}
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}
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func checkTxs(t *testing.T, mempool *Mempool, count int) types.Txs {
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txs := make(types.Txs, count)
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for i := 0; i < count; i++ {
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txBytes := make([]byte, 20)
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txs[i] = txBytes
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_, err := rand.Read(txBytes)
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if err != nil {
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t.Error(err)
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}
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if err := mempool.CheckTx(txBytes, nil); err != nil {
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// Skip invalid txs.
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// TestMempoolFilters will fail otherwise. It asserts a number of txs
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// returned.
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if IsPreCheckError(err) {
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continue
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}
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t.Fatalf("CheckTx failed: %v while checking #%d tx", err, i)
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}
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}
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return txs
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}
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func TestReapMaxBytesMaxGas(t *testing.T) {
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app := kvstore.NewKVStoreApplication()
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cc := proxy.NewLocalClientCreator(app)
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mempool := newMempoolWithApp(cc)
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// Ensure gas calculation behaves as expected
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checkTxs(t, mempool, 1)
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tx0 := mempool.TxsFront().Value.(*mempoolTx)
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// assert that kv store has gas wanted = 1.
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require.Equal(t, app.CheckTx(tx0.tx).GasWanted, int64(1), "KVStore had a gas value neq to 1")
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require.Equal(t, tx0.gasWanted, int64(1), "transactions gas was set incorrectly")
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// ensure each tx is 20 bytes long
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require.Equal(t, len(tx0.tx), 20, "Tx is longer than 20 bytes")
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mempool.Flush()
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// each table driven test creates numTxsToCreate txs with checkTx, and at the end clears all remaining txs.
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// each tx has 20 bytes + amino overhead = 21 bytes, 1 gas
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tests := []struct {
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numTxsToCreate int
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maxBytes int64
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maxGas int64
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expectedNumTxs int
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}{
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{20, -1, -1, 20},
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{20, -1, 0, 0},
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{20, -1, 10, 10},
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{20, -1, 30, 20},
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{20, 0, -1, 0},
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{20, 0, 10, 0},
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{20, 10, 10, 0},
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{20, 22, 10, 1},
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{20, 220, -1, 10},
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{20, 220, 5, 5},
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{20, 220, 10, 10},
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{20, 220, 15, 10},
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{20, 20000, -1, 20},
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{20, 20000, 5, 5},
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{20, 20000, 30, 20},
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}
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for tcIndex, tt := range tests {
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checkTxs(t, mempool, tt.numTxsToCreate)
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got := mempool.ReapMaxBytesMaxGas(tt.maxBytes, tt.maxGas)
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assert.Equal(t, tt.expectedNumTxs, len(got), "Got %d txs, expected %d, tc #%d",
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len(got), tt.expectedNumTxs, tcIndex)
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mempool.Flush()
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}
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}
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func TestMempoolFilters(t *testing.T) {
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app := kvstore.NewKVStoreApplication()
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cc := proxy.NewLocalClientCreator(app)
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mempool := newMempoolWithApp(cc)
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emptyTxArr := []types.Tx{[]byte{}}
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nopPreFilter := func(tx types.Tx) error { return nil }
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nopPostFilter := func(tx types.Tx, res *abci.ResponseCheckTx) error { return nil }
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// each table driven test creates numTxsToCreate txs with checkTx, and at the end clears all remaining txs.
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// each tx has 20 bytes + amino overhead = 21 bytes, 1 gas
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tests := []struct {
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numTxsToCreate int
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preFilter PreCheckFunc
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postFilter PostCheckFunc
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expectedNumTxs int
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}{
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{10, nopPreFilter, nopPostFilter, 10},
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{10, PreCheckAminoMaxBytes(10), nopPostFilter, 0},
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{10, PreCheckAminoMaxBytes(20), nopPostFilter, 0},
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{10, PreCheckAminoMaxBytes(22), nopPostFilter, 10},
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{10, nopPreFilter, PostCheckMaxGas(-1), 10},
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{10, nopPreFilter, PostCheckMaxGas(0), 0},
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{10, nopPreFilter, PostCheckMaxGas(1), 10},
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{10, nopPreFilter, PostCheckMaxGas(3000), 10},
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{10, PreCheckAminoMaxBytes(10), PostCheckMaxGas(20), 0},
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{10, PreCheckAminoMaxBytes(30), PostCheckMaxGas(20), 10},
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{10, PreCheckAminoMaxBytes(22), PostCheckMaxGas(1), 10},
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{10, PreCheckAminoMaxBytes(22), PostCheckMaxGas(0), 0},
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}
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for tcIndex, tt := range tests {
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mempool.Update(1, emptyTxArr, tt.preFilter, tt.postFilter)
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checkTxs(t, mempool, tt.numTxsToCreate)
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require.Equal(t, tt.expectedNumTxs, mempool.Size(), "mempool had the incorrect size, on test case %d", tcIndex)
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mempool.Flush()
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}
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}
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func TestMempoolUpdateAddsTxsToCache(t *testing.T) {
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app := kvstore.NewKVStoreApplication()
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cc := proxy.NewLocalClientCreator(app)
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mempool := newMempoolWithApp(cc)
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mempool.Update(1, []types.Tx{[]byte{0x01}}, nil, nil)
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err := mempool.CheckTx([]byte{0x01}, nil)
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if assert.Error(t, err) {
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assert.Equal(t, ErrTxInCache, err)
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}
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}
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func TestTxsAvailable(t *testing.T) {
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app := kvstore.NewKVStoreApplication()
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cc := proxy.NewLocalClientCreator(app)
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mempool := newMempoolWithApp(cc)
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mempool.EnableTxsAvailable()
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timeoutMS := 500
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// with no txs, it shouldnt fire
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ensureNoFire(t, mempool.TxsAvailable(), timeoutMS)
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// send a bunch of txs, it should only fire once
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txs := checkTxs(t, mempool, 100)
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ensureFire(t, mempool.TxsAvailable(), timeoutMS)
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ensureNoFire(t, mempool.TxsAvailable(), timeoutMS)
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// call update with half the txs.
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// it should fire once now for the new height
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// since there are still txs left
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committedTxs, txs := txs[:50], txs[50:]
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if err := mempool.Update(1, committedTxs, nil, nil); err != nil {
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t.Error(err)
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}
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ensureFire(t, mempool.TxsAvailable(), timeoutMS)
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ensureNoFire(t, mempool.TxsAvailable(), timeoutMS)
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// send a bunch more txs. we already fired for this height so it shouldnt fire again
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moreTxs := checkTxs(t, mempool, 50)
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ensureNoFire(t, mempool.TxsAvailable(), timeoutMS)
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// now call update with all the txs. it should not fire as there are no txs left
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committedTxs = append(txs, moreTxs...)
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if err := mempool.Update(2, committedTxs, nil, nil); err != nil {
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t.Error(err)
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}
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ensureNoFire(t, mempool.TxsAvailable(), timeoutMS)
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// send a bunch more txs, it should only fire once
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checkTxs(t, mempool, 100)
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ensureFire(t, mempool.TxsAvailable(), timeoutMS)
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ensureNoFire(t, mempool.TxsAvailable(), timeoutMS)
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}
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func TestSerialReap(t *testing.T) {
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app := counter.NewCounterApplication(true)
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app.SetOption(abci.RequestSetOption{Key: "serial", Value: "on"})
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cc := proxy.NewLocalClientCreator(app)
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mempool := newMempoolWithApp(cc)
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appConnCon, _ := cc.NewABCIClient()
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appConnCon.SetLogger(log.TestingLogger().With("module", "abci-client", "connection", "consensus"))
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err := appConnCon.Start()
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require.Nil(t, err)
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cacheMap := make(map[string]struct{})
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deliverTxsRange := func(start, end int) {
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// Deliver some txs.
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for i := start; i < end; i++ {
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// This will succeed
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txBytes := make([]byte, 8)
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binary.BigEndian.PutUint64(txBytes, uint64(i))
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err := mempool.CheckTx(txBytes, nil)
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_, cached := cacheMap[string(txBytes)]
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if cached {
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require.NotNil(t, err, "expected error for cached tx")
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} else {
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require.Nil(t, err, "expected no err for uncached tx")
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}
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cacheMap[string(txBytes)] = struct{}{}
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// Duplicates are cached and should return error
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err = mempool.CheckTx(txBytes, nil)
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require.NotNil(t, err, "Expected error after CheckTx on duplicated tx")
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}
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}
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reapCheck := func(exp int) {
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txs := mempool.ReapMaxBytesMaxGas(-1, -1)
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require.Equal(t, len(txs), exp, fmt.Sprintf("Expected to reap %v txs but got %v", exp, len(txs)))
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}
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updateRange := func(start, end int) {
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txs := make([]types.Tx, 0)
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for i := start; i < end; i++ {
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txBytes := make([]byte, 8)
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binary.BigEndian.PutUint64(txBytes, uint64(i))
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txs = append(txs, txBytes)
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}
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if err := mempool.Update(0, txs, nil, nil); err != nil {
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t.Error(err)
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}
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}
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commitRange := func(start, end int) {
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// Deliver some txs.
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for i := start; i < end; i++ {
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txBytes := make([]byte, 8)
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binary.BigEndian.PutUint64(txBytes, uint64(i))
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res, err := appConnCon.DeliverTxSync(txBytes)
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if err != nil {
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t.Errorf("Client error committing tx: %v", err)
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}
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if res.IsErr() {
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t.Errorf("Error committing tx. Code:%v result:%X log:%v",
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res.Code, res.Data, res.Log)
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}
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}
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res, err := appConnCon.CommitSync()
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if err != nil {
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t.Errorf("Client error committing: %v", err)
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}
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if len(res.Data) != 8 {
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t.Errorf("Error committing. Hash:%X", res.Data)
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}
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}
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//----------------------------------------
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// Deliver some txs.
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deliverTxsRange(0, 100)
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// Reap the txs.
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reapCheck(100)
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// Reap again. We should get the same amount
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reapCheck(100)
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// Deliver 0 to 999, we should reap 900 new txs
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// because 100 were already counted.
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deliverTxsRange(0, 1000)
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// Reap the txs.
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reapCheck(1000)
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// Reap again. We should get the same amount
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reapCheck(1000)
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// Commit from the conensus AppConn
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commitRange(0, 500)
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updateRange(0, 500)
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// We should have 500 left.
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reapCheck(500)
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// Deliver 100 invalid txs and 100 valid txs
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deliverTxsRange(900, 1100)
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// We should have 600 now.
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reapCheck(600)
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}
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func TestCacheRemove(t *testing.T) {
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cache := newMapTxCache(100)
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numTxs := 10
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txs := make([][]byte, numTxs)
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for i := 0; i < numTxs; i++ {
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// probability of collision is 2**-256
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txBytes := make([]byte, 32)
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rand.Read(txBytes)
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txs[i] = txBytes
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cache.Push(txBytes)
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// make sure its added to both the linked list and the map
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require.Equal(t, i+1, len(cache.map_))
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require.Equal(t, i+1, cache.list.Len())
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}
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for i := 0; i < numTxs; i++ {
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cache.Remove(txs[i])
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// make sure its removed from both the map and the linked list
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require.Equal(t, numTxs-(i+1), len(cache.map_))
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require.Equal(t, numTxs-(i+1), cache.list.Len())
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}
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}
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func TestMempoolCloseWAL(t *testing.T) {
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// 1. Create the temporary directory for mempool and WAL testing.
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rootDir, err := ioutil.TempDir("", "mempool-test")
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require.Nil(t, err, "expecting successful tmpdir creation")
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defer os.RemoveAll(rootDir)
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// 2. Ensure that it doesn't contain any elements -- Sanity check
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m1, err := filepath.Glob(filepath.Join(rootDir, "*"))
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require.Nil(t, err, "successful globbing expected")
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require.Equal(t, 0, len(m1), "no matches yet")
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// 3. Create the mempool
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wcfg := cfg.DefaultMempoolConfig()
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wcfg.RootDir = rootDir
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app := kvstore.NewKVStoreApplication()
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cc := proxy.NewLocalClientCreator(app)
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appConnMem, _ := cc.NewABCIClient()
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mempool := NewMempool(wcfg, appConnMem, 10)
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mempool.InitWAL()
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// 4. Ensure that the directory contains the WAL file
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m2, err := filepath.Glob(filepath.Join(rootDir, "*"))
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require.Nil(t, err, "successful globbing expected")
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require.Equal(t, 1, len(m2), "expecting the wal match in")
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// 5. Write some contents to the WAL
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mempool.CheckTx(types.Tx([]byte("foo")), nil)
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walFilepath := mempool.wal.Path
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sum1 := checksumFile(walFilepath, t)
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// 6. Sanity check to ensure that the written TX matches the expectation.
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require.Equal(t, sum1, checksumIt([]byte("foo\n")), "foo with a newline should be written")
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// 7. Invoke CloseWAL() and ensure it discards the
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// WAL thus any other write won't go through.
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mempool.CloseWAL()
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mempool.CheckTx(types.Tx([]byte("bar")), nil)
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sum2 := checksumFile(walFilepath, t)
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require.Equal(t, sum1, sum2, "expected no change to the WAL after invoking CloseWAL() since it was discarded")
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// 8. Sanity check to ensure that the WAL file still exists
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m3, err := filepath.Glob(filepath.Join(rootDir, "*"))
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require.Nil(t, err, "successful globbing expected")
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require.Equal(t, 1, len(m3), "expecting the wal match in")
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}
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// Size of the amino encoded TxMessage is the length of the
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// encoded byte array, plus 1 for the struct field, plus 4
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// for the amino prefix.
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func txMessageSize(tx types.Tx) int {
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return amino.ByteSliceSize(tx) + 1 + 4
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}
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func TestMempoolMaxMsgSize(t *testing.T) {
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app := kvstore.NewKVStoreApplication()
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cc := proxy.NewLocalClientCreator(app)
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mempl := newMempoolWithApp(cc)
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testCases := []struct {
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len int
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err bool
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}{
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// check small txs. no error
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{10, false},
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{1000, false},
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{1000000, false},
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// check around maxTxSize
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// changes from no error to error
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{maxTxSize - 2, false},
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{maxTxSize - 1, false},
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{maxTxSize, false},
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{maxTxSize + 1, true},
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{maxTxSize + 2, true},
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// check around maxMsgSize. all error
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{maxMsgSize - 1, true},
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{maxMsgSize, true},
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{maxMsgSize + 1, true},
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}
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for i, testCase := range testCases {
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caseString := fmt.Sprintf("case %d, len %d", i, testCase.len)
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tx := cmn.RandBytes(testCase.len)
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err := mempl.CheckTx(tx, nil)
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msg := &TxMessage{tx}
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encoded := cdc.MustMarshalBinaryBare(msg)
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require.Equal(t, len(encoded), txMessageSize(tx), caseString)
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if !testCase.err {
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require.True(t, len(encoded) <= maxMsgSize, caseString)
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require.NoError(t, err, caseString)
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} else {
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require.True(t, len(encoded) > maxMsgSize, caseString)
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require.Equal(t, err, ErrTxTooLarge, caseString)
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}
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}
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}
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func checksumIt(data []byte) string {
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h := sha256.New()
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h.Write(data)
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return fmt.Sprintf("%x", h.Sum(nil))
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}
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func checksumFile(p string, t *testing.T) string {
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data, err := ioutil.ReadFile(p)
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require.Nil(t, err, "expecting successful read of %q", p)
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return checksumIt(data)
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}
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