// createDB creates a new db instance and returns a teardown function the caller
// should invoke when done testing to clean up. The close flag indicates
// whether or not the teardown function should sync and close the database
// during teardown.
func createDB(dbType, dbName string, close bool) (database.Db, func(), error) {
// Handle memory database specially since it doesn't need the disk
// specific handling.
if dbType == "memdb" {
db, err := database.CreateDB(dbType)
if err != nil {
return nil, nil, fmt.Errorf("error creating db: %v", err)
}
// Setup a teardown function for cleaning up. This function is
// returned to the caller to be invoked when it is done testing.
teardown := func() {
if close {
db.Close()
}
}
return db, teardown, nil
}
// Create the root directory for test databases.
if !fileExists(testDbRoot) {
if err := os.MkdirAll(testDbRoot, 0700); err != nil {
err := fmt.Errorf("unable to create test db "+
"root: %v", err)
return nil, nil, err
}
}
// Create a new database to store the accepted blocks into.
dbPath := filepath.Join(testDbRoot, dbName)
_ = os.RemoveAll(dbPath)
db, err := database.CreateDB(dbType, dbPath)
if err != nil {
return nil, nil, fmt.Errorf("error creating db: %v", err)
}
// Setup a teardown function for cleaning up. This function is
// returned to the caller to be invoked when it is done testing.
teardown := func() {
dbVersionPath := filepath.Join(testDbRoot, dbName+".ver")
if close {
db.Sync()
db.Close()
}
os.RemoveAll(dbPath)
os.Remove(dbVersionPath)
os.RemoveAll(testDbRoot)
}
return db, teardown, nil
}
// This example demonstrates creating a new database and inserting the genesis
// block into it.
func ExampleCreateDB() {
// Notice in these example imports that the memdb driver is loaded.
// Ordinarily this would be whatever driver(s) your application
// requires.
// import (
// "github.com/decred/dcrd/database"
// _ "github.com/decred/dcrd/database/memdb"
// )
// Create a database and schedule it to be closed on exit. This example
// uses a memory-only database to avoid needing to write anything to
// the disk. Typically, you would specify a persistent database driver
// such as "leveldb" and give it a database name as the second
// parameter.
db, err := database.CreateDB("memdb")
if err != nil {
fmt.Println(err)
return
}
defer db.Close()
// Insert the main network genesis block.
genesis := dcrutil.NewBlock(chaincfg.TestNetParams.GenesisBlock)
genesis.SetHeight(0)
newHeight, err := db.InsertBlock(genesis)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("New height:", newHeight)
// Output:
// New height: 0
}
func setUpTestDb(t *testing.T, dbname string) (*testDb, error) {
// Ignore db remove errors since it means we didn't have an old one.
dbnamever := dbname + ".ver"
_ = os.RemoveAll(dbname)
_ = os.RemoveAll(dbnamever)
db, err := database.CreateDB("leveldb", dbname)
if err != nil {
return nil, err
}
testdatafile := filepath.Join("..", "/../blockchain/testdata", "blocks0to168.bz2")
blocks, err := loadBlocks(t, testdatafile)
if err != nil {
return nil, err
}
cleanUp := func() {
db.Close()
os.RemoveAll(dbname)
os.RemoveAll(dbnamever)
}
return &testDb{
db: db,
blocks: blocks,
dbName: dbname,
dbNameVer: dbnamever,
cleanUpFunc: cleanUp,
}, nil
}
// TODO Make more elaborate tests for difficulty. The difficulty algorithms
// have already been tested to death in simnet/testnet/mainnet simulations,
// but we should really have a unit test for them that includes tests for
// edge cases.
func TestDiff(t *testing.T) {
db, err := database.CreateDB("memdb")
if err != nil {
t.Errorf("Failed to create database: %v\n", err)
return
}
defer db.Close()
var tmdb *stake.TicketDB
genesisBlock := dcrutil.NewBlock(chaincfg.MainNetParams.GenesisBlock)
_, err = db.InsertBlock(genesisBlock)
if err != nil {
t.Errorf("Failed to insert genesis block: %v\n", err)
return
}
chain := blockchain.New(db, tmdb, &chaincfg.MainNetParams, nil, nil)
//timeSource := blockchain.NewMedianTime()
// Grab some blocks
// Build fake blockchain
// Calc new difficulty
ts := time.Now()
d, err := chain.CalcNextRequiredDifficulty(ts)
if err != nil {
t.Errorf("Failed to get difficulty: %v\n", err)
return
}
if d != 486604799 { // This is hardcoded in genesis block but not exported anywhere.
t.Error("Failed to get initial difficulty.")
}
sd, err := chain.CalcNextRequiredStakeDifficulty()
if err != nil {
t.Errorf("Failed to get stake difficulty: %v\n", err)
return
}
if sd != chaincfg.MainNetParams.MinimumStakeDiff {
t.Error("Incorrect initial stake difficulty.")
}
// Compare
// Repeat for a few more
}
// This example demonstrates how to create a new chain instance and use
// ProcessBlock to attempt to attempt add a block to the chain. As the package
// overview documentation describes, this includes all of the Decred consensus
// rules. This example intentionally attempts to insert a duplicate genesis
// block to illustrate how an invalid block is handled.
func ExampleBlockChain_ProcessBlock() {
// Create a new database to store the accepted blocks into. Typically
// this would be opening an existing database and would not use memdb
// which is a memory-only database backend, but we create a new db
// here so this is a complete working example.
db, err := database.CreateDB("memdb")
if err != nil {
fmt.Printf("Failed to create database: %v\n", err)
return
}
defer db.Close()
var tmdb *stake.TicketDB
// Insert the main network genesis block. This is part of the initial
// database setup. Like above, this typically would not be needed when
// opening an existing database.
genesisBlock := dcrutil.NewBlock(chaincfg.MainNetParams.GenesisBlock)
_, err = db.InsertBlock(genesisBlock)
if err != nil {
fmt.Printf("Failed to insert genesis block: %v\n", err)
return
}
// Create a new BlockChain instance without an initialized signature
// verification cache, using the underlying database for the main
// bitcoin network and ignore notifications.
chain := blockchain.New(db, tmdb, &chaincfg.MainNetParams, nil, nil)
// Create a new median time source that is required by the upcoming
// call to ProcessBlock. Ordinarily this would also add time values
// obtained from other peers on the network so the local time is
// adjusted to be in agreement with other peers.
timeSource := blockchain.NewMedianTime()
// Process a block. For this example, we are going to intentionally
// cause an error by trying to process the genesis block which already
// exists.
isOrphan, _, err := chain.ProcessBlock(genesisBlock, timeSource, blockchain.BFNone)
if err != nil {
fmt.Printf("Failed to process block: %v\n", err)
return
}
fmt.Printf("Block accepted. Is it an orphan?: %v", isOrphan)
// This output is dependent on the genesis block, and needs to be
// updated if the mainnet genesis block is updated.
// Output:
// Failed to process block: already have block 267a53b5ee86c24a48ec37aee4f4e7c0c4004892b7259e695e9f5b321f1ab9d2
}
// exampleLoadDB is used in the example to elide the setup code.
func exampleLoadDB() (database.Db, error) {
db, err := database.CreateDB("memdb")
if err != nil {
return nil, err
}
// Insert the main network genesis block.
genesis := dcrutil.NewBlock(chaincfg.TestNetParams.GenesisBlock)
genesis.SetHeight(0)
_, err = db.InsertBlock(genesis)
if err != nil {
return nil, err
}
return db, err
}
func TestEmptyDB(t *testing.T) {
dbname := "tstdbempty"
dbnamever := dbname + ".ver"
_ = os.RemoveAll(dbname)
_ = os.RemoveAll(dbnamever)
db, err := database.CreateDB("leveldb", dbname)
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
defer os.RemoveAll(dbname)
defer os.RemoveAll(dbnamever)
sha, height, err := db.NewestSha()
if !sha.IsEqual(&chainhash.Hash{}) {
t.Errorf("sha not zero hash")
}
if height != -1 {
t.Errorf("height not -1 %v", height)
}
// This is a reopen test
if err := db.Close(); err != nil {
t.Errorf("Close: unexpected error: %v", err)
}
db, err = database.OpenDB("leveldb", dbname)
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
defer func() {
if err := db.Close(); err != nil {
t.Errorf("Close: unexpected error: %v", err)
}
}()
sha, height, err = db.NewestSha()
if !sha.IsEqual(&chainhash.Hash{}) {
t.Errorf("sha not zero hash")
}
if height != -1 {
t.Errorf("height not -1 %v", height)
}
}
// TestCreateOpenUnsupported ensures that attempting to create or open an
// unsupported database type is handled properly.
func TestCreateOpenUnsupported(t *testing.T) {
// Ensure creating a database with an unsupported type fails with the
// expected error.
dbType := "unsupported"
_, err := database.CreateDB(dbType, "unsupportedcreatetest")
if err != database.ErrDbUnknownType {
t.Errorf("TestCreateOpenUnsupported: expected error not "+
"received - got: %v, want %v", err, database.ErrDbUnknownType)
return
}
// Ensure opening a database with the new type fails with the expected
// error.
_, err = database.OpenDB(dbType, "unsupportedopentest")
if err != database.ErrDbUnknownType {
t.Errorf("TestCreateOpenUnsupported: expected error not "+
"received - got: %v, want %v", err, database.ErrDbUnknownType)
return
}
}
// TestCreateOpenFail ensures that errors which occur while opening or closing
// a database are handled properly.
func TestCreateOpenFail(t *testing.T) {
// bogusCreateDB is a function which acts as a bogus create and open
// driver function that intentionally returns a failure which can be
// detected.
dbType := "createopenfail"
openError := fmt.Errorf("failed to create or open database for "+
"database type [%v]", dbType)
bogusCreateDB := func(args ...interface{}) (database.Db, error) {
return nil, openError
}
// Create and add driver that intentionally fails when created or opened
// to ensure errors on database open and create are handled properly.
driver := database.DriverDB{
DbType: dbType,
CreateDB: bogusCreateDB,
OpenDB: bogusCreateDB,
}
database.AddDBDriver(driver)
// Ensure creating a database with the new type fails with the expected
// error.
_, err := database.CreateDB(dbType, "createfailtest")
if err != openError {
t.Errorf("TestCreateOpenFail: expected error not received - "+
"got: %v, want %v", err, openError)
return
}
// Ensure opening a database with the new type fails with the expected
// error.
_, err = database.OpenDB(dbType, "openfailtest")
if err != openError {
t.Errorf("TestCreateOpenFail: expected error not received - "+
"got: %v, want %v", err, openError)
return
}
}
// loadBlockDB opens the block database and returns a handle to it.
func loadBlockDB() (database.Db, error) {
// The database name is based on the database type.
dbName := blockDbNamePrefix + "_" + cfg.DbType
if cfg.DbType == "sqlite" {
dbName = dbName + ".db"
}
dbPath := filepath.Join(cfg.DataDir, dbName)
log.Infof("Loading block database from '%s'", dbPath)
db, err := database.OpenDB(cfg.DbType, dbPath)
if err != nil {
// Return the error if it's not because the database doesn't
// exist.
if err != database.ErrDbDoesNotExist {
return nil, err
}
// Create the db if it does not exist.
err = os.MkdirAll(cfg.DataDir, 0700)
if err != nil {
return nil, err
}
db, err = database.CreateDB(cfg.DbType, dbPath)
if err != nil {
return nil, err
}
}
// Get the latest block height from the database.
_, height, err := db.NewestSha()
if err != nil {
db.Close()
return nil, err
}
log.Infof("Block database loaded with block height %d", height)
return db, nil
}
func TestTicketDB(t *testing.T) {
// Declare some useful variables
testBCHeight := int64(168)
// Set up a DB
database, err := database.CreateDB("leveldb", "ticketdb_test")
if err != nil {
t.Errorf("Db create error: %v", err.Error())
}
// Make a new tmdb to fill with dummy live and used tickets
var tmdb stake.TicketDB
tmdb.Initialize(simNetParams, database)
filename := filepath.Join("..", "/../blockchain/testdata", "blocks0to168.bz2")
fi, err := os.Open(filename)
bcStream := bzip2.NewReader(fi)
defer fi.Close()
// Create a buffer of the read file
bcBuf := new(bytes.Buffer)
bcBuf.ReadFrom(bcStream)
// Create decoder from the buffer and a map to store the data
bcDecoder := gob.NewDecoder(bcBuf)
blockchain := make(map[int64][]byte)
// Decode the blockchain into the map
if err := bcDecoder.Decode(&blockchain); err != nil {
t.Errorf("error decoding test blockchain")
}
var CopyOfMapsAtBlock50, CopyOfMapsAtBlock168 stake.TicketMaps
var ticketsToSpendIn167 []chainhash.Hash
var sortedTickets167 []*stake.TicketData
for i := int64(0); i <= testBCHeight; i++ {
block, err := dcrutil.NewBlockFromBytes(blockchain[i])
if err != nil {
t.Errorf("block deserialization error on block %v", i)
}
block.SetHeight(i)
database.InsertBlock(block)
tmdb.InsertBlock(block)
if i == 50 {
// Create snapshot of tmdb at block 50
CopyOfMapsAtBlock50, err = cloneTicketDB(&tmdb)
if err != nil {
t.Errorf("db cloning at block 50 failure! %v", err)
}
}
// Test to make sure that ticket selection is working correctly.
if i == 167 {
// Sort the entire list of tickets lexicographically by sorting
// each bucket and then appending it to the list. Then store it
// to use in the next block.
totalTickets := 0
sortedSlice := make([]*stake.TicketData, 0)
for i := 0; i < stake.BucketsSize; i++ {
tix, err := tmdb.DumpLiveTickets(uint8(i))
if err != nil {
t.Errorf("error dumping live tickets")
}
mapLen := len(tix)
totalTickets += mapLen
tempTdSlice := stake.NewTicketDataSlice(mapLen)
itr := 0 // Iterator
for _, td := range tix {
tempTdSlice[itr] = td
itr++
}
sort.Sort(tempTdSlice)
sortedSlice = append(sortedSlice, tempTdSlice...)
}
sortedTickets167 = sortedSlice
}
if i == 168 {
parentBlock, err := dcrutil.NewBlockFromBytes(blockchain[i-1])
if err != nil {
t.Errorf("block deserialization error on block %v", i-1)
}
pbhB, err := parentBlock.MsgBlock().Header.Bytes()
if err != nil {
t.Errorf("block header serialization error")
}
prng := stake.NewHash256PRNG(pbhB)
ts, err := stake.FindTicketIdxs(int64(len(sortedTickets167)),
int(simNetParams.TicketsPerBlock), prng)
if err != nil {
t.Errorf("failure on FindTicketIdxs")
}
for _, idx := range ts {
ticketsToSpendIn167 =
append(ticketsToSpendIn167, sortedTickets167[idx].SStxHash)
}
// Make sure that the tickets that were supposed to be spent or
// missed were.
spentTix, err := tmdb.DumpSpentTickets(i)
if err != nil {
t.Errorf("DumpSpentTickets failure")
}
for _, h := range ticketsToSpendIn167 {
if _, ok := spentTix[h]; !ok {
t.Errorf("missing ticket %v that should have been missed "+
"or spent in block %v", h, i)
}
}
// Create snapshot of tmdb at block 168
CopyOfMapsAtBlock168, err = cloneTicketDB(&tmdb)
if err != nil {
t.Errorf("db cloning at block 168 failure! %v", err)
}
}
}
// Remove five blocks from HEAD~1
_, _, _, err = tmdb.RemoveBlockToHeight(50)
if err != nil {
t.Errorf("error: %v", err)
}
// Test if the roll back was symmetric to the earlier snapshot
if !reflect.DeepEqual(tmdb.DumpMapsPointer(), CopyOfMapsAtBlock50) {
t.Errorf("The td did not restore to a previous block height correctly!")
}
// Test rescanning a ticket db
err = tmdb.RescanTicketDB()
if err != nil {
t.Errorf("rescanticketdb err: %v", err.Error())
}
// Test if the db file storage was symmetric to the earlier snapshot
if !reflect.DeepEqual(tmdb.DumpMapsPointer(), CopyOfMapsAtBlock168) {
t.Errorf("The td did not rescan to HEAD correctly!")
}
err = os.Mkdir("testdata/", os.FileMode(0700))
if err != nil {
t.Error(err)
}
// Store the ticket db to disk
err = tmdb.Store("testdata/", "testtmdb")
if err != nil {
t.Errorf("error: %v", err)
}
var tmdb2 stake.TicketDB
err = tmdb2.LoadTicketDBs("testdata/", "testtmdb", simNetParams, database)
if err != nil {
t.Errorf("error: %v", err)
}
// Test if the db file storage was symmetric to previously rescanned one
if !reflect.DeepEqual(tmdb.DumpMapsPointer(), tmdb2.DumpMapsPointer()) {
t.Errorf("The td did not rescan to a previous block height correctly!")
}
tmdb2.Close()
// Test dumping missing tickets from block 152
missedIn152, _ := chainhash.NewHashFromStr(
"84f7f866b0af1cc278cb8e0b2b76024a07542512c76487c83628c14c650de4fa")
tmdb.RemoveBlockToHeight(152)
missedTix, err := tmdb.DumpMissedTickets()
if err != nil {
t.Errorf("err dumping missed tix: %v", err.Error())
}
if _, exists := missedTix[*missedIn152]; !exists {
t.Errorf("couldn't finding missed tx 1 %v in tmdb @ block 152!",
missedIn152)
}
tmdb.RescanTicketDB()
// Make sure that the revoked map contains the revoked tx
revokedSlice := []*chainhash.Hash{missedIn152}
revokedTix, err := tmdb.DumpRevokedTickets()
if err != nil {
t.Errorf("err dumping missed tix: %v", err.Error())
}
if len(revokedTix) != 1 {
t.Errorf("revoked ticket map is wrong len, got %v, want %v",
len(revokedTix), 1)
}
_, wasMissedIn152 := revokedTix[*revokedSlice[0]]
ticketsRevoked := wasMissedIn152
if !ticketsRevoked {
t.Errorf("revoked ticket map did not include tickets missed in " +
"block 152 and later revoked")
}
database.Close()
tmdb.Close()
os.RemoveAll("ticketdb_test")
os.Remove("./ticketdb_test.ver")
os.Remove("testdata/testtmdb")
os.Remove("testdata")
}
func Test_dupTx(t *testing.T) {
// Ignore db remove errors since it means we didn't have an old one.
dbname := fmt.Sprintf("tstdbdup0")
dbnamever := dbname + ".ver"
_ = os.RemoveAll(dbname)
_ = os.RemoveAll(dbnamever)
db, err := database.CreateDB("leveldb", dbname)
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
defer os.RemoveAll(dbname)
defer os.RemoveAll(dbnamever)
defer func() {
if err := db.Close(); err != nil {
t.Errorf("Close: unexpected error: %v", err)
}
}()
testdatafile := filepath.Join("../", "../blockchain/testdata", "blocks0to168.bz2")
blocks, err := loadBlocks(t, testdatafile)
if err != nil {
t.Errorf("Unable to load blocks from test data for: %v",
err)
return
}
var lastSha *chainhash.Hash
// Populate with the fisrt 256 blocks, so we have blocks to 'mess with'
err = nil
out:
for height := int64(0); height < int64(len(blocks)); height++ {
block := blocks[height]
if height != 0 {
// except for NoVerify which does not allow lookups check inputs
mblock := block.MsgBlock()
//t.Errorf("%v", blockchain.DebugBlockString(block))
parentBlock := blocks[height-1]
mParentBlock := parentBlock.MsgBlock()
var txneededList []*chainhash.Hash
opSpentInBlock := make(map[wire.OutPoint]struct{})
if dcrutil.IsFlagSet16(dcrutil.BlockValid, mParentBlock.Header.VoteBits) {
for _, tx := range mParentBlock.Transactions {
for _, txin := range tx.TxIn {
if txin.PreviousOutPoint.Index == uint32(4294967295) {
continue
}
if existsInOwnBlockRegTree(mParentBlock, txin.PreviousOutPoint.Hash) {
_, used := opSpentInBlock[txin.PreviousOutPoint]
if !used {
// Origin tx is in the block and so hasn't been
// added yet, continue
opSpentInBlock[txin.PreviousOutPoint] = struct{}{}
continue
} else {
t.Errorf("output ref %v attempted double spend of previously spend output", txin.PreviousOutPoint)
}
}
origintxsha := &txin.PreviousOutPoint.Hash
txneededList = append(txneededList, origintxsha)
exists, err := db.ExistsTxSha(origintxsha)
if err != nil {
t.Errorf("ExistsTxSha: unexpected error %v ", err)
}
if !exists {
t.Errorf("referenced tx not found %v (height %v)", origintxsha, height)
}
_, err = db.FetchTxBySha(origintxsha)
if err != nil {
t.Errorf("referenced tx not found %v err %v ", origintxsha, err)
}
}
}
}
for _, stx := range mblock.STransactions {
for _, txin := range stx.TxIn {
if txin.PreviousOutPoint.Index == uint32(4294967295) {
continue
}
if existsInOwnBlockRegTree(mParentBlock, txin.PreviousOutPoint.Hash) {
_, used := opSpentInBlock[txin.PreviousOutPoint]
if !used {
// Origin tx is in the block and so hasn't been
// added yet, continue
opSpentInBlock[txin.PreviousOutPoint] = struct{}{}
continue
} else {
t.Errorf("output ref %v attempted double spend of previously spend output", txin.PreviousOutPoint)
}
}
origintxsha := &txin.PreviousOutPoint.Hash
txneededList = append(txneededList, origintxsha)
exists, err := db.ExistsTxSha(origintxsha)
if err != nil {
t.Errorf("ExistsTxSha: unexpected error %v ", err)
}
if !exists {
t.Errorf("referenced tx not found %v", origintxsha)
}
_, err = db.FetchTxBySha(origintxsha)
if err != nil {
t.Errorf("referenced tx not found %v err %v ", origintxsha, err)
}
}
}
txlist := db.FetchUnSpentTxByShaList(txneededList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v ", txe.Sha, txe.Err)
break out
}
}
}
newheight, err := db.InsertBlock(block)
if err != nil {
t.Errorf("failed to insert block %v err %v", height, err)
break out
}
if newheight != height {
t.Errorf("height mismatch expect %v returned %v", height, newheight)
break out
}
newSha, blkid, err := db.NewestSha()
if err != nil {
t.Errorf("failed to obtain latest sha %v %v", height, err)
}
if blkid != height {
t.Errorf("height doe not match latest block height %v %v %v", blkid, height, err)
}
blkSha := block.Sha()
if *newSha != *blkSha {
t.Errorf("Newest block sha does not match freshly inserted one %v %v %v ", newSha, blkSha, err)
}
lastSha = blkSha
}
// generate a new block based on the last sha
// these block are not verified, so there are a bunch of garbage fields
// in the 'generated' block.
var bh wire.BlockHeader
bh.Version = 0
bh.PrevBlock = *lastSha
// Bits, Nonce are not filled in
mblk := wire.NewMsgBlock(&bh)
hash, _ := chainhash.NewHashFromStr("c23953c56cb2ef8e4698e3ed3b0fc4c837754d3cd16485192d893e35f32626b4")
po := wire.NewOutPoint(hash, 0, dcrutil.TxTreeRegular)
txI := wire.NewTxIn(po, []byte("garbage"))
txO := wire.NewTxOut(50000000, []byte("garbageout"))
var tx wire.MsgTx
tx.AddTxIn(txI)
tx.AddTxOut(txO)
mblk.AddTransaction(&tx)
blk := dcrutil.NewBlock(mblk)
fetchList := []*chainhash.Hash{hash}
listReply := db.FetchUnSpentTxByShaList(fetchList)
for _, lr := range listReply {
if lr.Err != nil {
t.Errorf("sha %v spent %v err %v\n", lr.Sha,
lr.TxSpent, lr.Err)
}
}
_, err = db.InsertBlock(blk)
if err != nil {
t.Errorf("failed to insert phony block %v", err)
}
// ok, did it 'spend' the tx ?
listReply = db.FetchUnSpentTxByShaList(fetchList)
for _, lr := range listReply {
if lr.Err != nil && lr.Err != database.ErrTxShaMissing {
t.Errorf("sha %v spent %v err %v\n", lr.Sha,
lr.TxSpent, lr.Err)
}
}
txlist := blk.Transactions()
for _, tx := range txlist {
txsha := tx.Sha()
txReply, err := db.FetchTxBySha(txsha)
if err != nil {
t.Errorf("fully spent lookup %v err %v\n", hash, err)
} else {
for _, lr := range txReply {
if lr.Err != nil {
t.Errorf("stx %v spent %v err %v\n", lr.Sha,
lr.TxSpent, lr.Err)
}
}
}
}
err = db.DropAfterBlockBySha(lastSha)
if err != nil {
t.Errorf("failed to drop spending block %v", err)
}
}
// TestClosed ensure calling the interface functions on a closed database
// returns appropriate errors for the interface functions that return errors
// and does not panic or otherwise misbehave for functions which do not return
// errors.
func TestClosed(t *testing.T) {
db, err := database.CreateDB("memdb")
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
_, err = db.InsertBlock(dcrutil.NewBlock(chaincfg.MainNetParams.GenesisBlock))
if err != nil {
t.Errorf("InsertBlock: %v", err)
}
if err := db.Close(); err != nil {
t.Errorf("Close: unexpected error %v", err)
}
genesisHash := chaincfg.MainNetParams.GenesisHash
if err := db.DropAfterBlockBySha(genesisHash); err != memdb.ErrDbClosed {
t.Errorf("DropAfterBlockBySha: unexpected error %v", err)
}
if _, err := db.ExistsSha(genesisHash); err != memdb.ErrDbClosed {
t.Errorf("ExistsSha: Unexpected error: %v", err)
}
if _, err := db.FetchBlockBySha(genesisHash); err != memdb.ErrDbClosed {
t.Errorf("FetchBlockBySha: unexpected error %v", err)
}
if _, err := db.FetchBlockShaByHeight(0); err != memdb.ErrDbClosed {
t.Errorf("FetchBlockShaByHeight: unexpected error %v", err)
}
if _, err := db.FetchHeightRange(0, 1); err != memdb.ErrDbClosed {
t.Errorf("FetchHeightRange: unexpected error %v", err)
}
genesisCoinbaseTx := chaincfg.MainNetParams.GenesisBlock.Transactions[0]
coinbaseHash := genesisCoinbaseTx.TxSha()
if _, err := db.ExistsTxSha(&coinbaseHash); err != memdb.ErrDbClosed {
t.Errorf("ExistsTxSha: unexpected error %v", err)
}
if _, err := db.FetchTxBySha(genesisHash); err != memdb.ErrDbClosed {
t.Errorf("FetchTxBySha: unexpected error %v", err)
}
requestHashes := []*chainhash.Hash{genesisHash}
reply := db.FetchTxByShaList(requestHashes)
if len(reply) != len(requestHashes) {
t.Errorf("FetchUnSpentTxByShaList unexpected number of replies "+
"got: %d, want: %d", len(reply), len(requestHashes))
}
for i, txLR := range reply {
wantReply := &database.TxListReply{
Sha: requestHashes[i],
Err: memdb.ErrDbClosed,
}
if !reflect.DeepEqual(wantReply, txLR) {
t.Errorf("FetchTxByShaList unexpected reply\ngot: %v\n"+
"want: %v", txLR, wantReply)
}
}
reply = db.FetchUnSpentTxByShaList(requestHashes)
if len(reply) != len(requestHashes) {
t.Errorf("FetchUnSpentTxByShaList unexpected number of replies "+
"got: %d, want: %d", len(reply), len(requestHashes))
}
for i, txLR := range reply {
wantReply := &database.TxListReply{
Sha: requestHashes[i],
Err: memdb.ErrDbClosed,
}
if !reflect.DeepEqual(wantReply, txLR) {
t.Errorf("FetchUnSpentTxByShaList unexpected reply\n"+
"got: %v\nwant: %v", txLR, wantReply)
}
}
if _, _, err := db.NewestSha(); err != memdb.ErrDbClosed {
t.Errorf("NewestSha: unexpected error %v", err)
}
if err := db.Sync(); err != memdb.ErrDbClosed {
t.Errorf("Sync: unexpected error %v", err)
}
if err := db.RollbackClose(); err != memdb.ErrDbClosed {
t.Errorf("RollbackClose: unexpected error %v", err)
}
if err := db.Close(); err != memdb.ErrDbClosed {
t.Errorf("Close: unexpected error %v", err)
}
}
// chainSetup is used to create a new db and chain instance with the genesis
// block already inserted. In addition to the new chain instnce, it returns
// a teardown function the caller should invoke when done testing to clean up.
func chainSetup(dbName string, params *chaincfg.Params) (*blockchain.BlockChain, func(), error) {
if !isSupportedDbType(testDbType) {
return nil, nil, fmt.Errorf("unsupported db type %v", testDbType)
}
// Handle memory database specially since it doesn't need the disk
// specific handling.
var db database.Db
tmdb := new(stake.TicketDB)
var teardown func()
if testDbType == "memdb" {
ndb, err := database.CreateDB(testDbType)
if err != nil {
return nil, nil, fmt.Errorf("error creating db: %v", err)
}
db = ndb
// Setup a teardown function for cleaning up. This function is
// returned to the caller to be invoked when it is done testing.
teardown = func() {
tmdb.Close()
db.Close()
}
} else {
// Create the root directory for test databases.
if !fileExists(testDbRoot) {
if err := os.MkdirAll(testDbRoot, 0700); err != nil {
err := fmt.Errorf("unable to create test db "+
"root: %v", err)
return nil, nil, err
}
}
// Create a new database to store the accepted blocks into.
dbPath := filepath.Join(testDbRoot, dbName)
_ = os.RemoveAll(dbPath)
ndb, err := database.CreateDB(testDbType, dbPath)
if err != nil {
return nil, nil, fmt.Errorf("error creating db: %v", err)
}
db = ndb
// Setup a teardown function for cleaning up. This function is
// returned to the caller to be invoked when it is done testing.
teardown = func() {
dbVersionPath := filepath.Join(testDbRoot, dbName+".ver")
tmdb.Close()
db.Sync()
db.Close()
os.RemoveAll(dbPath)
os.Remove(dbVersionPath)
os.RemoveAll(testDbRoot)
}
}
// Insert the main network genesis block. This is part of the initial
// database setup.
genesisBlock := dcrutil.NewBlock(params.GenesisBlock)
genesisBlock.SetHeight(int64(0))
_, err := db.InsertBlock(genesisBlock)
if err != nil {
teardown()
err := fmt.Errorf("failed to insert genesis block: %v", err)
return nil, nil, err
}
// Start the ticket database.
tmdb.Initialize(params, db)
tmdb.RescanTicketDB()
chain := blockchain.New(db, tmdb, params, nil)
return chain, teardown, nil
}
// insert every block in the test chain
// after each insert, fetch all the tx affected by the latest
// block and verify that the the tx is spent/unspent
// new tx should be fully unspent, referenced tx should have
// the associated txout set to spent.
// checks tx tree stake only
func testUnspentInsertStakeTree(t *testing.T) {
// Ignore db remove errors since it means we didn't have an old one.
dbname := fmt.Sprintf("tstdbuspnt1")
dbnamever := dbname + ".ver"
_ = os.RemoveAll(dbname)
_ = os.RemoveAll(dbnamever)
db, err := database.CreateDB("leveldb", dbname)
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
defer os.RemoveAll(dbname)
defer os.RemoveAll(dbnamever)
defer func() {
if err := db.Close(); err != nil {
t.Errorf("Close: unexpected error: %v", err)
}
}()
blocks := loadblocks(t)
endtest:
for height := int64(0); height < int64(len(blocks))-1; height++ {
block := blocks[height]
var txneededList []*chainhash.Hash
var txlookupList []*chainhash.Hash
var txOutList []*chainhash.Hash
var txInList []*wire.OutPoint
spentFromParent := make(map[wire.OutPoint]struct{})
for _, tx := range block.MsgBlock().STransactions {
for _, txin := range tx.TxIn {
if txin.PreviousOutPoint.Index == uint32(4294967295) {
continue
}
origintxsha := &txin.PreviousOutPoint.Hash
exists, err := db.ExistsTxSha(origintxsha)
if err != nil {
t.Errorf("ExistsTxSha: unexpected error %v ", err)
}
if !exists {
// Check and see if the outpoint references txtreeregular of
// the previous block. If it does, make sure nothing in tx
// treeregular spends it in flight. Then check make sure it's
// not currently spent for this block. If it isn't, mark it
// spent and skip lookup in the db below, since the db won't
// yet be able to add it as it's still to be inserted.
spentFromParentReg := false
parent := blocks[height-1]
parentValid := dcrutil.IsFlagSet16(dcrutil.BlockValid, block.MsgBlock().Header.VoteBits)
if parentValid {
for _, prtx := range parent.Transactions() {
// Check and make sure it's not being spent in this tx
// tree first by an in flight tx. Mark it spent if it
// is so it fails the check below.
for _, prtxCheck := range parent.Transactions() {
for _, prTxIn := range prtxCheck.MsgTx().TxIn {
if prTxIn.PreviousOutPoint == txin.PreviousOutPoint {
spentFromParent[txin.PreviousOutPoint] = struct{}{}
}
}
}
// If it is in the tree, make sure it's not already spent
// somewhere else and mark it spent. Set the flag below
// so we skip lookup.
if prtx.Sha().IsEqual(origintxsha) {
if _, spent := spentFromParent[txin.PreviousOutPoint]; !spent {
spentFromParent[txin.PreviousOutPoint] = struct{}{}
spentFromParentReg = true
}
}
}
}
if !spentFromParentReg {
t.Errorf("referenced tx not found %v %v", origintxsha, height)
} else {
continue
}
}
txInList = append(txInList, &txin.PreviousOutPoint)
txneededList = append(txneededList, origintxsha)
txlookupList = append(txlookupList, origintxsha)
}
txshaname := tx.TxSha()
txlookupList = append(txlookupList, &txshaname)
txOutList = append(txOutList, &txshaname)
}
txneededmap := map[chainhash.Hash]*database.TxListReply{}
txlist := db.FetchUnSpentTxByShaList(txneededList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v", txe.Sha, txe.Err)
break endtest
}
txneededmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txneededmap[spend.Hash]
if itxe.TxSpent[spend.Index] == true {
t.Errorf("txin %v:%v is already spent", spend.Hash, spend.Index)
}
}
newheight, err := db.InsertBlock(block)
if err != nil {
t.Errorf("failed to insert block %v err %v", height, err)
break endtest
}
if newheight != height {
t.Errorf("height mismatch expect %v returned %v", height, newheight)
break endtest
}
// only check transactions if current block is valid
txlookupmap := map[chainhash.Hash]*database.TxListReply{}
txlist = db.FetchTxByShaList(txlookupList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v ", txe.Sha, txe.Err, height)
break endtest
}
txlookupmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txlookupmap[spend.Hash]
if itxe.TxSpent[spend.Index] == false {
t.Errorf("txin %v:%v is unspent %v", spend.Hash, spend.Index, itxe.TxSpent)
}
}
for _, txo := range txOutList {
itxe := txlookupmap[*txo]
for i, spent := range itxe.TxSpent {
if spent == true {
t.Errorf("height: %v freshly inserted tx %v already spent %v", height, txo, i)
}
}
}
if len(txInList) == 0 {
continue
}
dropblock := blocks[height-1]
err = db.DropAfterBlockBySha(dropblock.Sha())
if err != nil {
t.Errorf("failed to drop block %v err %v", height, err)
break endtest
}
txlookupmap = map[chainhash.Hash]*database.TxListReply{}
txlist = db.FetchUnSpentTxByShaList(txlookupList)
for _, txe := range txlist {
if txe.Err != nil {
if _, ok := txneededmap[*txe.Sha]; ok {
t.Errorf("tx list fetch failed %v err %v ", txe.Sha, txe.Err)
break endtest
}
}
txlookupmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txlookupmap[spend.Hash]
if itxe.TxSpent[spend.Index] == true {
t.Errorf("txin %v:%v is unspent %v", spend.Hash, spend.Index, itxe.TxSpent)
}
}
newheight, err = db.InsertBlock(block)
if err != nil {
t.Errorf("failed to insert block %v err %v", height, err)
break endtest
}
txlookupmap = map[chainhash.Hash]*database.TxListReply{}
txlist = db.FetchTxByShaList(txlookupList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v ", txe.Sha, txe.Err)
break endtest
}
txlookupmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txlookupmap[spend.Hash]
if itxe.TxSpent[spend.Index] == false {
t.Errorf("txin %v:%v is unspent %v", spend.Hash, spend.Index, itxe.TxSpent)
}
}
}
}
// insert every block in the test chain
// after each insert, fetch all the tx affected by the latest
// block and verify that the the tx is spent/unspent
// new tx should be fully unspent, referenced tx should have
// the associated txout set to spent.
// checks tx tree regular only
func testUnspentInsertRegTree(t *testing.T) {
// Ignore db remove errors since it means we didn't have an old one.
dbname := fmt.Sprintf("tstdbuspnt1")
dbnamever := dbname + ".ver"
_ = os.RemoveAll(dbname)
_ = os.RemoveAll(dbnamever)
db, err := database.CreateDB("leveldb", dbname)
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
defer os.RemoveAll(dbname)
defer os.RemoveAll(dbnamever)
defer func() {
if err := db.Close(); err != nil {
t.Errorf("Close: unexpected error: %v", err)
}
}()
blocks := loadblocks(t)
endtest:
for height := int64(0); height < int64(len(blocks))-1; height++ {
block := blocks[height]
// jam in genesis block
if height == 0 {
_, err := db.InsertBlock(block)
if err != nil {
t.Errorf("failed to insert block %v err %v", height, err)
break endtest
}
continue
}
var txneededList []*chainhash.Hash
var txlookupList []*chainhash.Hash
var txOutList []*chainhash.Hash
var txInList []*wire.OutPoint
parent := blocks[height-1]
unspentStakeOps := unspendStakeTxTree(block)
// Check regular tree of parent and make sure it's ok
for txIdx, tx := range parent.MsgBlock().Transactions {
for txinIdx, txin := range tx.TxIn {
if txin.PreviousOutPoint.Index == uint32(4294967295) {
continue
}
origintxsha := &txin.PreviousOutPoint.Hash
exists, err := db.ExistsTxSha(origintxsha)
if err != nil {
t.Errorf("ExistsTxSha: unexpected error %v ", err)
}
if !exists {
// Check and see if something in flight spends it from this
// tx tree. We can skip looking for this transaction OP
// if that's the case.
spentFromParentReg := false
alreadySpentOps := getRegTreeOpsSpentBeforeThisOp(parent,
txIdx, txinIdx)
_, alreadySpent := alreadySpentOps[txin.PreviousOutPoint]
if !alreadySpent {
spentFromParentReg = true
}
if !spentFromParentReg {
t.Errorf("referenced tx not found %v %v", origintxsha,
height)
} else {
continue
}
}
txInList = append(txInList, &txin.PreviousOutPoint)
txneededList = append(txneededList, origintxsha)
txlookupList = append(txlookupList, origintxsha)
}
txshaname := tx.TxSha()
txlookupList = append(txlookupList, &txshaname)
txOutList = append(txOutList, &txshaname)
}
txneededmap := map[chainhash.Hash]*database.TxListReply{}
txlist := db.FetchUnSpentTxByShaList(txneededList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v", txe.Sha, txe.Err)
break endtest
}
txneededmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txneededmap[spend.Hash]
if itxe.TxSpent[spend.Index] == true {
t.Errorf("txin %v:%v is already spent", spend.Hash, spend.Index)
}
}
newheight, err := db.InsertBlock(block)
if err != nil {
t.Errorf("failed to insert block %v err %v", height, err)
break endtest
}
if newheight != height {
t.Errorf("height mismatch expect %v returned %v", height, newheight)
break endtest
}
// only check transactions if current block validates parent block
if !dcrutil.IsFlagSet16(block.MsgBlock().Header.VoteBits, dcrutil.BlockValid) {
continue
}
txlookupmap := map[chainhash.Hash]*database.TxListReply{}
txlist = db.FetchTxByShaList(txlookupList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v (height %v)", txe.Sha,
txe.Err, height)
break endtest
}
txlookupmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txlookupmap[spend.Hash]
if itxe.TxSpent[spend.Index] == false {
t.Errorf("txin %v:%v is unspent %v", spend.Hash, spend.Index, itxe.TxSpent)
}
}
alreadySpentOps := unspendInflightTxTree(parent)
for _, txo := range txOutList {
itxe := txlookupmap[*txo]
for i, spent := range itxe.TxSpent {
if spent == true {
// If this was spent in flight, skip
thisOP := wire.OutPoint{*txo, uint32(i), dcrutil.TxTreeRegular}
_, alreadySpent := alreadySpentOps[thisOP]
if alreadySpent {
continue
}
// If it was spent in the stake tree it's actually unspent too
_, wasSpentInStakeTree := unspentStakeOps[thisOP]
if wasSpentInStakeTree {
continue
}
t.Errorf("height: %v freshly inserted tx %v already spent %v", height, txo, i)
}
}
}
if len(txInList) == 0 {
continue
}
dropblock := blocks[height-1]
err = db.DropAfterBlockBySha(dropblock.Sha())
if err != nil {
t.Errorf("failed to drop block %v err %v", height, err)
break endtest
}
txlookupmap = map[chainhash.Hash]*database.TxListReply{}
txlist = db.FetchUnSpentTxByShaList(txlookupList)
for _, txe := range txlist {
if txe.Err != nil {
if _, ok := txneededmap[*txe.Sha]; ok {
t.Errorf("tx list fetch failed %v err %v ", txe.Sha, txe.Err)
break endtest
}
}
txlookupmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txlookupmap[spend.Hash]
if itxe.TxSpent[spend.Index] == true {
t.Errorf("txin %v:%v is unspent %v", spend.Hash, spend.Index, itxe.TxSpent)
}
}
newheight, err = db.InsertBlock(block)
if err != nil {
t.Errorf("failed to insert block %v err %v", height, err)
break endtest
}
txlookupmap = map[chainhash.Hash]*database.TxListReply{}
txlist = db.FetchTxByShaList(txlookupList)
for _, txe := range txlist {
if txe.Err != nil {
t.Errorf("tx list fetch failed %v err %v ", txe.Sha, txe.Err)
break endtest
}
txlookupmap[*txe.Sha] = txe
}
for _, spend := range txInList {
itxe := txlookupmap[spend.Hash]
if itxe.TxSpent[spend.Index] == false {
t.Errorf("txin %v:%v is unspent %v", spend.Hash, spend.Index, itxe.TxSpent)
}
}
}
}
