// createSimulationWallet is intended to be called from the rpcclient
// and used to create a wallet for actors involved in simulations.
func createSimulationWallet(cfg *config) error {
// Simulation wallet password is 'password'.
privPass := []byte("password")
// Public passphrase is the default.
pubPass := []byte(wallet.InsecurePubPassphrase)
netDir := networkDir(cfg.AppDataDir, activeNet.Params)
// Create the wallet.
dbPath := filepath.Join(netDir, walletDbName)
fmt.Println("Creating the wallet...")
// Create the wallet database backed by bolt db.
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
return err
}
defer db.Close()
// Create the wallet.
err = wallet.Create(db, pubPass, privPass, nil, activeNet.Params)
if err != nil {
return err
}
fmt.Println("The wallet has been created successfully.")
return nil
}
func testStore() (*Store, func(), error) {
tmpDir, err := ioutil.TempDir("", "wtxmgr_test")
if err != nil {
return nil, func() {}, err
}
db, err := walletdb.Create("bdb", filepath.Join(tmpDir, "db"))
if err != nil {
teardown := func() {
os.RemoveAll(tmpDir)
}
return nil, teardown, err
}
teardown := func() {
db.Close()
os.RemoveAll(tmpDir)
}
ns, err := db.Namespace([]byte("txstore"))
if err != nil {
return nil, teardown, err
}
err = Create(ns)
if err != nil {
return nil, teardown, err
}
s, err := Open(ns)
return s, teardown, err
}
func testDB() (walletdb.DB, func(), error) {
tmpDir, err := ioutil.TempDir("", "wtxmgr_test")
if err != nil {
return nil, func() {}, err
}
db, err := walletdb.Create("bdb", filepath.Join(tmpDir, "db"))
return db, func() { os.RemoveAll(tmpDir) }, err
}
// TestInterface performs all interfaces tests for this database driver.
func TestInterface(t *testing.T) {
// Create a new database to run tests against.
dbPath := "interfacetest.db"
db, err := walletdb.Create(dbType, dbPath)
if err != nil {
t.Errorf("Failed to create test database (%s) %v", dbType, err)
return
}
defer os.Remove(dbPath)
defer db.Close()
// Run all of the interface tests against the database.
testInterface(t, db)
}
// createDbNamespace creates a new wallet database at the provided path and
// returns it along with the address manager namespace.
func createDbNamespace(dbPath string) (walletdb.DB, walletdb.Namespace, error) {
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
return nil, nil, err
}
namespace, err := db.Namespace(waddrmgrNamespaceKey)
if err != nil {
db.Close()
return nil, nil, err
}
return db, namespace, nil
}
// exampleLoadDB is used in the examples to elide the setup code.
func exampleLoadDB() (walletdb.DB, func(), error) {
dbName := fmt.Sprintf("exampleload%d.db", exampleNum)
dbPath := filepath.Join(os.TempDir(), dbName)
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
return nil, nil, err
}
teardownFunc := func() {
db.Close()
os.Remove(dbPath)
}
exampleNum++
return db, teardownFunc, err
}
func createWalletDB() (walletdb.DB, func(), error) {
dir, err := ioutil.TempDir("", "votingpool_example")
if err != nil {
return nil, nil, err
}
db, err := walletdb.Create("bdb", filepath.Join(dir, "wallet.db"))
if err != nil {
return nil, nil, err
}
dbTearDown := func() {
db.Close()
os.RemoveAll(dir)
}
return db, dbTearDown, nil
}
// TstCreatePool creates a Pool on a fresh walletdb and returns it. It also
// returns the pool's waddrmgr.Manager (which uses the same walletdb, but with a
// different namespace) as a convenience, and a teardown function that closes
// the Manager and removes the directory used to store the database.
func TstCreatePool(t *testing.T) (tearDownFunc func(), mgr *waddrmgr.Manager, pool *Pool) {
// This should be moved somewhere else eventually as not all of our tests
// call this function, but right now the only option would be to have the
// t.Parallel() call in each of our tests.
t.Parallel()
// Create a new wallet DB and addr manager.
dir, err := ioutil.TempDir("", "pool_test")
if err != nil {
t.Fatalf("Failed to create db dir: %v", err)
}
db, err := walletdb.Create("bdb", filepath.Join(dir, "wallet.db"))
if err != nil {
t.Fatalf("Failed to create wallet DB: %v", err)
}
mgrNamespace, err := db.Namespace([]byte("waddrmgr"))
if err != nil {
t.Fatalf("Failed to create addr manager DB namespace: %v", err)
}
var fastScrypt = &waddrmgr.ScryptOptions{N: 16, R: 8, P: 1}
err = waddrmgr.Create(mgrNamespace, seed, pubPassphrase, privPassphrase,
&chaincfg.MainNetParams, fastScrypt)
if err == nil {
mgr, err = waddrmgr.Open(mgrNamespace, pubPassphrase,
&chaincfg.MainNetParams, nil)
}
if err != nil {
t.Fatalf("Failed to create addr manager: %v", err)
}
// Create a walletdb for votingpools.
vpNamespace, err := db.Namespace([]byte("votingpool"))
if err != nil {
t.Fatalf("Failed to create VotingPool DB namespace: %v", err)
}
pool, err = Create(vpNamespace, mgr, []byte{0x00})
if err != nil {
t.Fatalf("Voting Pool creation failed: %v", err)
}
tearDownFunc = func() {
db.Close()
mgr.Close()
os.RemoveAll(dir)
}
return tearDownFunc, mgr, pool
}
// CreateNewWallet creates a new wallet using the provided public and private
// passphrases. The seed is optional. If non-nil, addresses are derived from
// this seed. If nil, a secure random seed is generated.
func (l *Loader) CreateNewWallet(pubPassphrase, privPassphrase, seed []byte) (*Wallet, error) {
defer l.mu.Unlock()
l.mu.Lock()
if l.wallet != nil {
return nil, ErrLoaded
}
dbPath := filepath.Join(l.dbDirPath, walletDbName)
exists, err := fileExists(dbPath)
if err != nil {
return nil, err
}
if exists {
return nil, ErrExists
}
// Create the wallet database backed by bolt db.
err = os.MkdirAll(l.dbDirPath, 0700)
if err != nil {
return nil, err
}
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
return nil, err
}
// Initialize the newly created database for the wallet before opening.
err = Create(db, pubPassphrase, privPassphrase, seed, l.chainParams)
if err != nil {
return nil, err
}
// Open the newly-created wallet.
w, err := Open(db, pubPassphrase, nil, l.chainParams)
if err != nil {
return nil, err
}
w.Start()
l.onLoaded(w, db)
return w, nil
}
// 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 := walletdb.Create(dbType)
if err != walletdb.ErrDbUnknownType {
t.Errorf("expected error not received - got: %v, want %v", err,
walletdb.ErrDbUnknownType)
return
}
// Ensure opening a database with the an unsupported type fails with the
// expected error.
_, err = walletdb.Open(dbType)
if err != walletdb.ErrDbUnknownType {
t.Errorf("expected error not received - got: %v, want %v", err,
walletdb.ErrDbUnknownType)
return
}
}
// TestAddDuplicateDriver ensures that adding a duplicate driver does not
// overwrite an existing one.
func TestAddDuplicateDriver(t *testing.T) {
supportedDrivers := walletdb.SupportedDrivers()
if len(supportedDrivers) == 0 {
t.Errorf("no backends to test")
return
}
dbType := supportedDrivers[0]
// bogusCreateDB is a function which acts as a bogus create and open
// driver function and intentionally returns a failure that can be
// detected if the interface allows a duplicate driver to overwrite an
// existing one.
bogusCreateDB := func(args ...interface{}) (walletdb.DB, error) {
return nil, fmt.Errorf("duplicate driver allowed for database "+
"type [%v]", dbType)
}
// Create a driver that tries to replace an existing one. Set its
// create and open functions to a function that causes a test failure if
// they are invoked.
driver := walletdb.Driver{
DbType: dbType,
Create: bogusCreateDB,
Open: bogusCreateDB,
}
err := walletdb.RegisterDriver(driver)
if err != walletdb.ErrDbTypeRegistered {
t.Errorf("unexpected duplicate driver registration error - "+
"got %v, want %v", err, walletdb.ErrDbTypeRegistered)
}
dbPath := "dupdrivertest.db"
db, err := walletdb.Create(dbType, dbPath)
if err != nil {
t.Errorf("failed to create database: %v", err)
return
}
db.Close()
_ = os.Remove(dbPath)
}
// 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{}) (walletdb.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 := walletdb.Driver{
DbType: dbType,
Create: bogusCreateDB,
Open: bogusCreateDB,
}
walletdb.RegisterDriver(driver)
// Ensure creating a database with the new type fails with the expected
// error.
_, err := walletdb.Create(dbType)
if err != openError {
t.Errorf("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 = walletdb.Open(dbType)
if err != openError {
t.Errorf("expected error not received - got: %v, want %v", err,
openError)
return
}
}
func TstCreateTxStore(t *testing.T) (store *wtxmgr.Store, tearDown func()) {
dir, err := ioutil.TempDir("", "pool_test_txstore")
if err != nil {
t.Fatalf("Failed to create txstore dir: %v", err)
}
db, err := walletdb.Create("bdb", filepath.Join(dir, "txstore.db"))
if err != nil {
t.Fatalf("Failed to create walletdb: %v", err)
}
wtxmgrNamespace, err := db.Namespace([]byte("testtxstore"))
if err != nil {
t.Fatalf("Failed to create walletdb namespace: %v", err)
}
err = wtxmgr.Create(wtxmgrNamespace)
if err != nil {
t.Fatalf("Failed to create txstore: %v", err)
}
s, err := wtxmgr.Open(wtxmgrNamespace)
if err != nil {
t.Fatalf("Failed to open txstore: %v", err)
}
return s, func() { os.RemoveAll(dir) }
}
func exampleCreateTxStore() (*wtxmgr.Store, func(), error) {
dir, err := ioutil.TempDir("", "pool_test_txstore")
if err != nil {
return nil, nil, err
}
db, err := walletdb.Create("bdb", filepath.Join(dir, "txstore.db"))
if err != nil {
return nil, nil, err
}
wtxmgrNamespace, err := db.Namespace([]byte("testtxstore"))
if err != nil {
return nil, nil, err
}
err = wtxmgr.Create(wtxmgrNamespace)
if err != nil {
return nil, nil, err
}
s, err := wtxmgr.Open(wtxmgrNamespace)
if err != nil {
return nil, nil, err
}
return s, func() { os.RemoveAll(dir) }, nil
}
// This example demonstrates creating a new database.
func ExampleCreate() {
// This example assumes the bdb (bolt db) driver is imported.
//
// import (
// "github.com/roasbeef/btcwallet/walletdb"
// _ "github.com/roasbeef/btcwallet/walletdb/bdb"
// )
// Create a database and schedule it to be closed and removed on exit.
// Typically you wouldn't want to remove the database right away like
// this, but it's done here in the example to ensure the example cleans
// up after itself.
dbPath := filepath.Join(os.TempDir(), "examplecreate.db")
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
fmt.Println(err)
return
}
defer os.Remove(dbPath)
defer db.Close()
// Output:
}
// TestCreateOpenFail ensures that errors related to creating and opening a
// database are handled properly.
func TestCreateOpenFail(t *testing.T) {
// Ensure that attempting to open a database that doesn't exist returns
// the expected error.
wantErr := walletdb.ErrDbDoesNotExist
if _, err := walletdb.Open(dbType, "noexist.db"); err != wantErr {
t.Errorf("Open: did not receive expected error - got %v, "+
"want %v", err, wantErr)
return
}
// Ensure that attempting to open a database with the wrong number of
// parameters returns the expected error.
wantErr = fmt.Errorf("invalid arguments to %s.Open -- expected "+
"database path", dbType)
if _, err := walletdb.Open(dbType, 1, 2, 3); err.Error() != wantErr.Error() {
t.Errorf("Open: did not receive expected error - got %v, "+
"want %v", err, wantErr)
return
}
// Ensure that attempting to open a database with an invalid type for
// the first parameter returns the expected error.
wantErr = fmt.Errorf("first argument to %s.Open is invalid -- "+
"expected database path string", dbType)
if _, err := walletdb.Open(dbType, 1); err.Error() != wantErr.Error() {
t.Errorf("Open: did not receive expected error - got %v, "+
"want %v", err, wantErr)
return
}
// Ensure that attempting to create a database with the wrong number of
// parameters returns the expected error.
wantErr = fmt.Errorf("invalid arguments to %s.Create -- expected "+
"database path", dbType)
if _, err := walletdb.Create(dbType, 1, 2, 3); err.Error() != wantErr.Error() {
t.Errorf("Create: did not receive expected error - got %v, "+
"want %v", err, wantErr)
return
}
// Ensure that attempting to open a database with an invalid type for
// the first parameter returns the expected error.
wantErr = fmt.Errorf("first argument to %s.Create is invalid -- "+
"expected database path string", dbType)
if _, err := walletdb.Create(dbType, 1); err.Error() != wantErr.Error() {
t.Errorf("Create: did not receive expected error - got %v, "+
"want %v", err, wantErr)
return
}
// Ensure operations against a closed database return the expected
// error.
dbPath := "createfail.db"
db, err := walletdb.Create(dbType, dbPath)
if err != nil {
t.Errorf("Create: unexpected error: %v", err)
return
}
defer os.Remove(dbPath)
db.Close()
wantErr = walletdb.ErrDbNotOpen
if _, err := db.Namespace([]byte("ns1")); err != wantErr {
t.Errorf("Namespace: did not receive expected error - got %v, "+
"want %v", err, wantErr)
return
}
}
// This example demonstrates creating a new database, getting a namespace from
// it, and using a managed read-write transaction against the namespace to store
// and retrieve data.
func Example_basicUsage() {
// This example assumes the bdb (bolt db) driver is imported.
//
// import (
// "github.com/roasbeef/btcwallet/walletdb"
// _ "github.com/roasbeef/btcwallet/walletdb/bdb"
// )
// Create a database and schedule it to be closed and removed on exit.
// Typically you wouldn't want to remove the database right away like
// this, but it's done here in the example to ensure the example cleans
// up after itself.
dbPath := filepath.Join(os.TempDir(), "exampleusage.db")
db, err := walletdb.Create("bdb", dbPath)
if err != nil {
fmt.Println(err)
return
}
defer os.Remove(dbPath)
defer db.Close()
// Get or create a namespace in the database as needed. This namespace
// is what is typically passed to specific sub-packages so they have
// their own area to work in without worrying about conflicting keys.
namespaceKey := []byte("walletsubpackage")
namespace, err := db.Namespace(namespaceKey)
if err != nil {
fmt.Println(err)
return
}
// Use the Update function of the namespace to perform a managed
// read-write transaction. The transaction will automatically be rolled
// back if the supplied inner function returns a non-nil error.
err = namespace.Update(func(tx walletdb.Tx) error {
// All data is stored against the root bucket of the namespace,
// or nested buckets of the root bucket. It's not really
// necessary to store it in a separate variable like this, but
// it has been done here for the purposes of the example to
// illustrate.
rootBucket := tx.RootBucket()
// Store a key/value pair directly in the root bucket.
key := []byte("mykey")
value := []byte("myvalue")
if err := rootBucket.Put(key, value); err != nil {
return err
}
// Read the key back and ensure it matches.
if !bytes.Equal(rootBucket.Get(key), value) {
return fmt.Errorf("unexpected value for key '%s'", key)
}
// Create a new nested bucket under the root bucket.
nestedBucketKey := []byte("mybucket")
nestedBucket, err := rootBucket.CreateBucket(nestedBucketKey)
if err != nil {
return err
}
// The key from above that was set in the root bucket does not
// exist in this new nested bucket.
if nestedBucket.Get(key) != nil {
return fmt.Errorf("key '%s' is not expected nil", key)
}
return nil
})
if err != nil {
fmt.Println(err)
return
}
// Output:
}
// TestPersistence ensures that values stored are still valid after closing and
// reopening the database.
func TestPersistence(t *testing.T) {
// Create a new database to run tests against.
dbPath := "persistencetest.db"
db, err := walletdb.Create(dbType, dbPath)
if err != nil {
t.Errorf("Failed to create test database (%s) %v", dbType, err)
return
}
defer os.Remove(dbPath)
defer db.Close()
// Create a namespace and put some values into it so they can be tested
// for existence on re-open.
storeValues := map[string]string{
"ns1key1": "foo1",
"ns1key2": "foo2",
"ns1key3": "foo3",
}
ns1Key := []byte("ns1")
ns1, err := db.Namespace(ns1Key)
if err != nil {
t.Errorf("Namespace: unexpected error: %v", err)
return
}
err = ns1.Update(func(tx walletdb.Tx) error {
rootBucket := tx.RootBucket()
if rootBucket == nil {
return fmt.Errorf("RootBucket: unexpected nil root bucket")
}
for k, v := range storeValues {
if err := rootBucket.Put([]byte(k), []byte(v)); err != nil {
return fmt.Errorf("Put: unexpected error: %v", err)
}
}
return nil
})
if err != nil {
t.Errorf("ns1 Update: unexpected error: %v", err)
return
}
// Close and reopen the database to ensure the values persist.
db.Close()
db, err = walletdb.Open(dbType, dbPath)
if err != nil {
t.Errorf("Failed to open test database (%s) %v", dbType, err)
return
}
defer db.Close()
// Ensure the values previously stored in the 3rd namespace still exist
// and are correct.
ns1, err = db.Namespace(ns1Key)
if err != nil {
t.Errorf("Namespace: unexpected error: %v", err)
return
}
err = ns1.View(func(tx walletdb.Tx) error {
rootBucket := tx.RootBucket()
if rootBucket == nil {
return fmt.Errorf("RootBucket: unexpected nil root bucket")
}
for k, v := range storeValues {
gotVal := rootBucket.Get([]byte(k))
if !reflect.DeepEqual(gotVal, []byte(v)) {
return fmt.Errorf("Get: key '%s' does not "+
"match expected value - got %s, want %s",
k, gotVal, v)
}
}
return nil
})
if err != nil {
t.Errorf("ns1 View: unexpected error: %v", err)
return
}
}