func (t *parallelTest) setup() {
ctx := server.MakeTestContext()
ctx.MaxOffset = logicMaxOffset
ctx.TestingKnobs.SQLExecutor = &sql.ExecutorTestingKnobs{
WaitForGossipUpdate: true,
CheckStmtStringChange: true,
}
t.srv = setupTestServerWithContext(t.T, &ctx)
}
func createTestServerContext() (server.Context, *CommandFilters) {
ctx := server.MakeTestContext()
var cmdFilters CommandFilters
cmdFilters.AppendFilter(checkEndTransactionTrigger, true)
ctx.TestingKnobs.Store = &storage.StoreTestingKnobs{
TestingCommandFilter: cmdFilters.runFilters,
}
return ctx, &cmdFilters
}
func Fuzz(data []byte) int {
defer func() {
if r := recover(); r != nil {
if !panicExpected(r) {
panic(r)
}
}
}()
// Run in insecure mode to avoid dealing with TLS.
ctx := server.MakeTestContext()
ctx.Insecure = true
s := server.StartTestServerWithContext(nil, &ctx)
defer s.Stop()
conn, err := net.Dial("tcp", s.ServingAddr())
if err != nil {
panic(err)
}
defer conn.Close()
// Connect to the PGWire v3 server. This connection message includes information
// to match with pgwire.Match and bypass sql/pgwire.parseOptions:
// - 4 byte prefix for the buffer's length
// - 4 bytes for the version30 value
// - 1 byte for a null terminator to skip session args
const version30 = 196608
var connectBuf [9]byte
binary.BigEndian.PutUint32(connectBuf[:4], uint32(len(connectBuf)))
binary.BigEndian.PutUint32(connectBuf[4:8], version30)
if err != nil {
panic(err)
}
conn.Write(connectBuf[:])
time.Sleep(1 * time.Millisecond)
// Send a pgwire "typed message" (see sql/pgwire.readBuffer.{readTypedMsg, readUntypedMsg}).
// The message includes:
// - 1 byte for the type
// - 4 bytes for the message's length (minus the type prefix)
// - the rest of message
//
// TODO(nvanbenschoten) investigate sending multiple messages.
sendBuf := data
if len(data) > 1 {
newLen := len(data) + 4
sendBuf = make([]byte, newLen)
sendBuf[0] = data[0]
binary.BigEndian.PutUint32(sendBuf[1:5], uint32(newLen-1))
copy(sendBuf[5:], data[1:])
}
conn.Write(sendBuf)
time.Sleep(1 * time.Millisecond)
return 0
}
func TestLeaseManagerReacquire(testingT *testing.T) {
defer leaktest.AfterTest(testingT)()
ctx := server.MakeTestContext()
var releaseWaiter leaseReleaseWaiter
ctx.TestingKnobs = base.TestingKnobs{
SQLLeaseManager: &csql.LeaseManagerTestingKnobs{
LeaseStoreTestingKnobs: csql.LeaseStoreTestingKnobs{
LeaseReleasedEvent: releaseWaiter.LeaseReleasedNotification,
},
},
}
t := newLeaseTest(testingT, &ctx)
defer t.cleanup()
const descID = keys.LeaseTableID
// Acquire 2 leases from the same node. They should point to the same lease
// structure.
l1 := t.mustAcquire(1, descID, 0)
l2 := t.mustAcquire(1, descID, 0)
if l1 != l2 {
t.Fatalf("expected same lease, but found %p != %p", l1, l2)
}
if l1.Refcount() != 2 {
t.Fatalf("expected refcount of 2, but found %d", l1.Refcount())
}
t.expectLeases(descID, "/1/1")
// Set the minimum lease duration such that the next lease acquisition will
// require the lease to be reacquired.
savedLeaseDuration, savedMinLeaseDuration := csql.LeaseDuration, csql.MinLeaseDuration
defer func() {
csql.LeaseDuration, csql.MinLeaseDuration = savedLeaseDuration, savedMinLeaseDuration
}()
csql.MinLeaseDuration = l1.Expiration().Sub(timeutil.Now())
csql.LeaseDuration = 2 * csql.MinLeaseDuration
// Another lease acquisition from the same node will result in a new lease.
l3 := t.mustAcquire(1, descID, 0)
if l1 == l3 {
t.Fatalf("expected different leases, but found %p", l1)
}
if l3.Refcount() != 1 {
t.Fatalf("expected refcount of 1, but found %d", l3.Refcount())
}
if l3.Expiration().Before(l1.Expiration()) {
t.Fatalf("expected new lease expiration (%s) to be after old lease expiration (%s)",
l3.Expiration(), l1.Expiration())
}
t.expectLeases(descID, "/1/1 /1/1")
t.mustRelease(1, l1, nil)
t.mustRelease(1, l2, &releaseWaiter)
t.mustRelease(1, l3, nil)
}
// Test that if there's an error on COMMIT that needs to be reported to the user
// the txn will be rolled back. As opposed to an error on a COMMIT in an auto-retry
// txn, where we retry the txn (not tested here).
func TestErrorOnCommit(t *testing.T) {
defer leaktest.AfterTest(t)()
ctx := server.MakeTestContext()
ctx.TestingKnobs.SQLExecutor = &sql.ExecutorTestingKnobs{FixTxnPriority: true}
server, sqlDB, _ := setupWithContext(t, &ctx)
defer cleanup(server, sqlDB)
if _, err := sqlDB.Exec(`
CREATE DATABASE t; CREATE TABLE t.test (k INT PRIMARY KEY, v TEXT);
`); err != nil {
t.Fatal(err)
}
tx, err := sqlDB.Begin()
if err != nil {
t.Fatal(err)
}
if _, err := tx.Exec("SAVEPOINT cockroach_restart; SET TRANSACTION PRIORITY LOW;"); err != nil {
t.Fatal(err)
}
if _, err = tx.Exec("INSERT INTO t.test (k, v) VALUES (0, 'sentinel');"); err != nil {
t.Fatal(err)
}
abortTxn(t, sqlDB, 0)
if err = tx.Commit(); err == nil {
t.Fatal("expected commit to fail")
}
// Check that there's no error reading and we don't see any rows.
var rows *gosql.Rows
if rows, err = sqlDB.Query("SELECT * FROM t.test"); err != nil {
t.Fatal(err)
}
if rows.Next() {
var k int
var v string
_ = rows.Scan(&k, &v)
t.Fatalf("found unexpected row: %d %s", k, v)
}
rows.Close()
}
func Example_insecure() {
c := cliTest{cleanupFunc: func() {}}
ctx := server.MakeTestContext()
ctx.Insecure = true
c.TestServer.Ctx = &ctx
if err := c.Start(); err != nil {
log.Fatalf("Could not start server: %v", err)
}
defer c.stop()
c.Run("debug kv put --insecure a 1 b 2")
c.Run("debug kv scan --insecure")
// Output:
// debug kv put --insecure a 1 b 2
// debug kv scan --insecure
// "a" "1"
// "b" "2"
// 2 result(s)
}
func TestDB_Put_insecure(t *testing.T) {
defer leaktest.AfterTest(t)()
ctx := server.MakeTestContext()
ctx.Insecure = true
s := server.TestServer{
Ctx: &ctx,
}
if err := s.Start(); err != nil {
log.Fatalf("Could not start server: %v", err)
}
defer s.Stop()
db := s.DB()
if err := db.Put("aa", "1"); err != nil {
panic(err)
}
result, err := db.Get("aa")
if err != nil {
panic(err)
}
checkResult(t, []byte("1"), result.ValueBytes())
}
func (t *logicTest) setup() {
// TODO(pmattis): Add a flag to make it easy to run the tests against a local
// MySQL or Postgres instance.
ctx := server.MakeTestContext()
ctx.MaxOffset = logicMaxOffset
ctx.TestingKnobs.SQLExecutor = &sql.ExecutorTestingKnobs{
WaitForGossipUpdate: true,
CheckStmtStringChange: true,
}
t.srv = setupTestServerWithContext(t.T, &ctx)
// db may change over the lifetime of this function, with intermediate
// values cached in t.clients and finally closed in t.close().
t.cleanupRootUser = t.setUser(security.RootUser)
if _, err := t.db.Exec(`
CREATE DATABASE test;
SET DATABASE = test;
`); err != nil {
t.Fatal(err)
}
}
func ExampleDB_Put_insecure() {
ctx := server.MakeTestContext()
ctx.Insecure = true
s := server.TestServer{
Ctx: &ctx,
}
if err := s.Start(); err != nil {
log.Fatalf("Could not start server: %v", err)
}
defer s.Stop()
db := s.DB()
if err := db.Put("aa", "1"); err != nil {
panic(err)
}
result, err := db.Get("aa")
if err != nil {
panic(err)
}
fmt.Printf("aa=%s\n", result.ValueBytes())
// Output:
// aa=1
}
func setup(t *testing.T) (*testServer, *gosql.DB, *client.DB) {
ctx := server.MakeTestContext()
return setupWithContext(t, &ctx)
}
func TestLeaseManagerPublishVersionChanged(testingT *testing.T) {
defer leaktest.AfterTest(testingT)()
ctx := server.MakeTestContext()
t := newLeaseTest(testingT, &ctx)
defer t.cleanup()
const descID = keys.LeaseTableID
// Start two goroutines that are concurrently trying to publish a new version
// of the descriptor. The first goroutine progresses to the update function
// and then signals the second goroutine to start which is allowed to proceed
// through completion. The first goroutine is then signaled and when it
// attempts to publish the new version it will encounter an update error and
// retry the transaction. Upon retry it will see that the descriptor version
// has changed and have to proceed to its outer retry loop and wait for the
// number of leases on the previous version to drop to 0.
n1 := t.node(1)
n2 := t.node(2)
n1update := make(chan struct{})
n2start := make(chan struct{})
var wg sync.WaitGroup
wg.Add(2)
go func(n1update, n2start chan struct{}) {
_, err := n1.Publish(descID, func(*sqlbase.TableDescriptor) error {
if n2start != nil {
// Signal node 2 to start.
close(n2start)
n2start = nil
}
// Wait for node 2 signal indicating that node 2 finished publication of
// a new version.
<-n1update
return nil
})
if err != nil {
panic(err)
}
wg.Done()
}(n1update, n2start)
go func(n1update, n2start chan struct{}) {
// Wait for node 1 signal indicating that node 1 is in its update()
// function.
<-n2start
_, err := n2.Publish(descID, func(*sqlbase.TableDescriptor) error {
return nil
})
if err != nil {
panic(err)
}
close(n1update)
wg.Done()
}(n1update, n2start)
wg.Wait()
t.mustAcquire(1, descID, 0)
t.expectLeases(descID, "/3/1")
}
func TestLeaseManager(testingT *testing.T) {
defer leaktest.AfterTest(testingT)()
ctx := server.MakeTestContext()
t := newLeaseTest(testingT, &ctx)
defer t.cleanup()
const descID = keys.LeaseTableID
// We can't acquire a lease on a non-existent table.
expected := "descriptor not found"
if _, err := t.acquire(1, 10000, 0); !testutils.IsError(err, expected) {
t.Fatalf("expected %s, but found %v", expected, err)
}
l1 := t.mustAcquire(1, descID, 0)
t.expectLeases(descID, "/1/1")
// Node 2 never acquired a lease on descID, so we should expect an error.
if err := t.release(2, l1); err == nil {
t.Fatalf("expected error, but found none")
}
t.mustRelease(1, l1)
t.expectLeases(descID, "/1/1")
// It is an error to acquire a lease for a specific version that doesn't
// exist yet.
expected = "version 2 of table .* does not exist"
if _, err := t.acquire(1, descID, 2); !testutils.IsError(err, expected) {
t.Fatalf("expected %s, but found %v", expected, err)
}
// Publish a new version and explicitly acquire it.
l2 := t.mustAcquire(1, descID, 0)
t.mustPublish(1, descID)
l3 := t.mustAcquire(1, descID, 2)
t.expectLeases(descID, "/1/1 /2/1")
// When the last local reference on the new version is released we don't
// release the node lease.
t.mustRelease(1, l3)
t.expectLeases(descID, "/1/1 /2/1")
// We can still acquire a local reference on the old version since it hasn't
// expired.
l4 := t.mustAcquire(1, descID, 1)
t.mustRelease(1, l4)
t.expectLeases(descID, "/1/1 /2/1")
// When the last local reference on the old version is released the node
// lease is also released.
t.mustRelease(1, l2)
t.expectLeases(descID, "/2/1")
// It is an error to acquire a lease for an old version once a new version
// exists and there are no local references for the old version.
expected = "lease.go.*: table .* unable to acquire lease on old version: 1 < 2"
if _, err := t.acquire(1, descID, 1); !testutils.IsError(err, expected) {
t.Fatalf("expected %s, but found %v", expected, err)
}
// Acquire 2 node leases on version 2.
l5 := t.mustAcquire(1, descID, 2)
l6 := t.mustAcquire(2, descID, 2)
// Publish version 3. This will succeed immediately.
t.mustPublish(3, descID)
// Start a goroutine to publish version 4 which will block until the version
// 2 leases are released.
var wg sync.WaitGroup
wg.Add(1)
go func() {
t.mustPublish(3, descID)
wg.Done()
}()
// Force both nodes ahead to version 3.
l7 := t.mustAcquire(1, descID, 3)
l8 := t.mustAcquire(2, descID, 3)
t.expectLeases(descID, "/2/1 /2/2 /3/1 /3/2")
t.mustRelease(1, l5)
t.expectLeases(descID, "/2/2 /3/1 /3/2")
t.mustRelease(2, l6)
t.expectLeases(descID, "/3/1 /3/2")
// Wait for version 4 to be published.
wg.Wait()
l9 := t.mustAcquire(1, descID, 4)
t.mustRelease(1, l7)
t.mustRelease(2, l8)
t.expectLeases(descID, "/3/2 /4/1")
t.mustRelease(1, l9)
t.expectLeases(descID, "/3/2 /4/1")
}
// TestPropagateTxnOnError verifies that DistSender.sendChunk properly
// propagates the txn data to a next iteration. Use txn.Writing field to
// verify that.
func TestPropagateTxnOnError(t *testing.T) {
defer leaktest.AfterTest(t)()
var storeKnobs storage.StoreTestingKnobs
// Set up a filter to so that the first CPut operation will
// get a ReadWithinUncertaintyIntervalError.
targetKey := roachpb.Key("b")
var numGets int32
storeKnobs.TestingCommandFilter =
func(fArgs storagebase.FilterArgs) *roachpb.Error {
_, ok := fArgs.Req.(*roachpb.ConditionalPutRequest)
if ok && fArgs.Req.Header().Key.Equal(targetKey) {
if atomic.AddInt32(&numGets, 1) == 1 {
z := roachpb.ZeroTimestamp
pErr := roachpb.NewReadWithinUncertaintyIntervalError(z, z)
return roachpb.NewErrorWithTxn(pErr, fArgs.Hdr.Txn)
}
}
return nil
}
ctx := server.MakeTestContext()
ctx.TestingKnobs.Store = &storeKnobs
s := server.StartTestServerWithContext(t, &ctx)
defer s.Stop()
db := setupMultipleRanges(t, s, "b")
// Set the initial value on the target key "b".
origVal := "val"
if err := db.Put(targetKey, origVal); err != nil {
t.Fatal(err)
}
// The following txn creates a batch request that is split
// into two requests: Put and CPut. The CPut operation will
// get a ReadWithinUncertaintyIntervalError and the txn will be
// retried.
epoch := 0
if err := db.Txn(func(txn *client.Txn) error {
epoch++
if epoch >= 2 {
// Writing must be true since we ran the BeginTransaction command.
if !txn.Proto.Writing {
t.Errorf("unexpected non-writing txn")
}
} else {
// Writing must be false since we haven't run any write command.
if txn.Proto.Writing {
t.Errorf("unexpected writing txn")
}
}
b := txn.NewBatch()
b.Put("a", "val")
b.CPut(targetKey, "new_val", origVal)
err := txn.CommitInBatch(b)
if epoch == 1 {
if retErr, ok := err.(*roachpb.RetryableTxnError); ok {
if _, ok := retErr.Cause.(*roachpb.ReadWithinUncertaintyIntervalError); ok {
if !retErr.Transaction.Writing {
t.Errorf("unexpected non-writing txn on error")
}
} else {
t.Errorf("expected ReadWithinUncertaintyIntervalError, but got: %s", retErr.Cause)
}
} else {
t.Errorf("expected a retryable error, but got: %s", err)
}
}
return err
}); err != nil {
t.Errorf("unexpected error on transactional Puts: %s", err)
}
if epoch != 2 {
t.Errorf("unexpected epoch; the txn must be retried exactly once, but got %d", epoch)
}
}
// getFastScanContext returns a test context with fast scan.
func getFastScanContext() server.Context {
c := server.MakeTestContext()
c.ScanInterval = time.Millisecond
c.ScanMaxIdleTime = time.Millisecond
return c
}