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core/state: access trie through Database interface, track errors (#14589)

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With this commit, core/state's access to the underlying key/value database is
mediated through an interface. Database errors are tracked in StateDB and
returned by CommitTo or the new Error method.

Motivation for this change: We can remove the light client's duplicated copy of
core/state. The light client now supports node iteration, so tracing and storage
enumeration can work with the light client (not implemented in this commit).
This commit is contained in:
Felix Lange
2017-06-27 15:57:06 +02:00
committed by GitHub
parent bb366271fe
commit 9e5f03b6c4
49 changed files with 810 additions and 1664 deletions
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40
core/state/statedb_test.go
View File

@ -28,6 +28,8 @@ import (
"testing"
"testing/quick"
check "gopkg.in/check.v1"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
@ -38,7 +40,7 @@ import (
func TestUpdateLeaks(t *testing.T) {
// Create an empty state database
db, _ := ethdb.NewMemDatabase()
state, _ := New(common.Hash{}, db)
state, _ := New(common.Hash{}, NewDatabase(db))
// Update it with some accounts
for i := byte(0); i < 255; i++ {
@ -66,8 +68,8 @@ func TestIntermediateLeaks(t *testing.T) {
// Create two state databases, one transitioning to the final state, the other final from the beginning
transDb, _ := ethdb.NewMemDatabase()
finalDb, _ := ethdb.NewMemDatabase()
transState, _ := New(common.Hash{}, transDb)
finalState, _ := New(common.Hash{}, finalDb)
transState, _ := New(common.Hash{}, NewDatabase(transDb))
finalState, _ := New(common.Hash{}, NewDatabase(finalDb))
modify := func(state *StateDB, addr common.Address, i, tweak byte) {
state.SetBalance(addr, big.NewInt(int64(11*i)+int64(tweak)))
@ -95,10 +97,10 @@ func TestIntermediateLeaks(t *testing.T) {
}
// Commit and cross check the databases.
if _, err := transState.Commit(false); err != nil {
if _, err := transState.CommitTo(transDb, false); err != nil {
t.Fatalf("failed to commit transition state: %v", err)
}
if _, err := finalState.Commit(false); err != nil {
if _, err := finalState.CommitTo(finalDb, false); err != nil {
t.Fatalf("failed to commit final state: %v", err)
}
for _, key := range finalDb.Keys() {
@ -282,7 +284,7 @@ func (test *snapshotTest) run() bool {
// Run all actions and create snapshots.
var (
db, _ = ethdb.NewMemDatabase()
state, _ = New(common.Hash{}, db)
state, _ = New(common.Hash{}, NewDatabase(db))
snapshotRevs = make([]int, len(test.snapshots))
sindex = 0
)
@ -297,7 +299,7 @@ func (test *snapshotTest) run() bool {
// Revert all snapshots in reverse order. Each revert must yield a state
// that is equivalent to fresh state with all actions up the snapshot applied.
for sindex--; sindex >= 0; sindex-- {
checkstate, _ := New(common.Hash{}, db)
checkstate, _ := New(common.Hash{}, NewDatabase(db))
for _, action := range test.actions[:test.snapshots[sindex]] {
action.fn(action, checkstate)
}
@ -354,21 +356,19 @@ func (test *snapshotTest) checkEqual(state, checkstate *StateDB) error {
return nil
}
func TestTouchDelete(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
state, _ := New(common.Hash{}, db)
state.GetOrNewStateObject(common.Address{})
root, _ := state.Commit(false)
state.Reset(root)
func (s *StateSuite) TestTouchDelete(c *check.C) {
s.state.GetOrNewStateObject(common.Address{})
root, _ := s.state.CommitTo(s.db, false)
s.state.Reset(root)
snapshot := state.Snapshot()
state.AddBalance(common.Address{}, new(big.Int))
if len(state.stateObjectsDirty) != 1 {
t.Fatal("expected one dirty state object")
snapshot := s.state.Snapshot()
s.state.AddBalance(common.Address{}, new(big.Int))
if len(s.state.stateObjectsDirty) != 1 {
c.Fatal("expected one dirty state object")
}
state.RevertToSnapshot(snapshot)
if len(state.stateObjectsDirty) != 0 {
t.Fatal("expected no dirty state object")
s.state.RevertToSnapshot(snapshot)
if len(s.state.stateObjectsDirty) != 0 {
c.Fatal("expected no dirty state object")
}
}