Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

executor: let flush privileges do nothing when skip-grant-table is configured #10986

Merged
merged 5 commits into from
Jul 2, 2019
Merged
Show file tree
Hide file tree
Changes from 2 commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions executor/executor_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,7 @@ var _ = Suite(&testUpdateSuite{})
var _ = Suite(&testOOMSuite{})
var _ = Suite(&testPointGetSuite{})
var _ = Suite(&testRecoverTable{})
var _ = Suite(&testFlushSuite{})

type testSuite struct {
cluster *mocktikv.Cluster
Expand Down
7 changes: 7 additions & 0 deletions executor/simple.go
Original file line number Diff line number Diff line change
Expand Up @@ -812,6 +812,13 @@ func (e *SimpleExec) executeFlush(s *ast.FlushStmt) error {
return errors.New("FLUSH TABLES WITH READ LOCK is not supported. Please use @@tidb_snapshot")
}
case ast.FlushPrivileges:
// If skip-grant-table is configured, do not flush privileges.
// Because LoadPrivilegeLoop does not run and the privilege Handle is nil,
// Call dom.PrivilegeHandle().Update would panic.
if config.GetGlobalConfig().Security.SkipGrantTable {
return nil
}

dom := domain.GetDomain(e.ctx)
sysSessionPool := dom.SysSessionPool()
ctx, err := sysSessionPool.Get()
Expand Down
31 changes: 29 additions & 2 deletions executor/simple_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -16,17 +16,19 @@ package executor_test
import (
"context"

"github.com/pingcap/tidb/planner/core"

. "github.com/pingcap/check"
"github.com/pingcap/parser/auth"
"github.com/pingcap/parser/model"
"github.com/pingcap/parser/mysql"
"github.com/pingcap/parser/terror"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/executor"
"github.com/pingcap/tidb/planner/core"
"github.com/pingcap/tidb/session"
"github.com/pingcap/tidb/sessionctx"
"github.com/pingcap/tidb/store/mockstore"
"github.com/pingcap/tidb/store/mockstore/mocktikv"
"github.com/pingcap/tidb/util/testkit"
"github.com/pingcap/tidb/util/testutil"
)
Expand Down Expand Up @@ -394,6 +396,31 @@ func (s *testSuite3) TestFlushPrivileges(c *C) {
// After flush.
_, err = se.Execute(ctx, `SELECT Password FROM mysql.User WHERE User="testflush" and Host="localhost"`)
c.Check(err, IsNil)

}

type testFlushSuite struct{}

func (s *testFlushSuite) TestFlushPrivilegesPanic(c *C) {
// Run in a separate suite because this test need to set SkipGrantTable config.
cluster := mocktikv.NewCluster()
mocktikv.BootstrapWithSingleStore(cluster)
mvccStore := mocktikv.MustNewMVCCStore()
store, err := mockstore.NewMockTikvStore(
mockstore.WithCluster(cluster),
mockstore.WithMVCCStore(mvccStore),
)
c.Assert(err, IsNil)
defer store.Close()

config.GetGlobalConfig().Security.SkipGrantTable = true
dom, err := session.BootstrapSession(store)
c.Assert(err, IsNil)
defer dom.Close()

tk := testkit.NewTestKit(c, store)
tk.MustExec("FLUSH PRIVILEGES")
zz-jason marked this conversation as resolved.
Show resolved Hide resolved
config.GetGlobalConfig().Security.SkipGrantTable = false
}

func (s *testSuite3) TestDropStats(c *C) {
Expand Down