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Merge pull request #6760 from onflow/leo/export-evm-state-from-gobs
Refactor Export EVM State and Compare State Diff
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| package state | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| ) | ||
|
|
||
| func AccountEqual(a, b *Account) bool { | ||
| if a.Address != b.Address { | ||
| return false | ||
| } | ||
| if !bytes.Equal(a.Balance.Bytes(), b.Balance.Bytes()) { | ||
| return false | ||
| } | ||
| if a.Nonce != b.Nonce { | ||
| return false | ||
| } | ||
| if a.CodeHash != b.CodeHash { | ||
| return false | ||
| } | ||
|
|
||
| // CollectionID could be different | ||
| return true | ||
| } | ||
|
|
||
| // find the difference and return as error | ||
| func Diff(a *EVMState, b *EVMState) []error { | ||
| var differences []error | ||
|
|
||
| // Compare Accounts | ||
| for addr, accA := range a.Accounts { | ||
| if accB, exists := b.Accounts[addr]; exists { | ||
| if !AccountEqual(accA, accB) { | ||
| differences = append(differences, fmt.Errorf("account %s differs, accA %v, accB %v", addr.Hex(), accA, accB)) | ||
| } | ||
| } else { | ||
| differences = append(differences, fmt.Errorf("account %s exists in a but not in b", addr.Hex())) | ||
| } | ||
| } | ||
| for addr := range b.Accounts { | ||
| if _, exists := a.Accounts[addr]; !exists { | ||
| differences = append(differences, fmt.Errorf("account %s exists in b but not in a", addr.Hex())) | ||
| } | ||
| } | ||
|
|
||
| // Compare Slots | ||
| for addr, slotsA := range a.Slots { | ||
| slotsB, exists := b.Slots[addr] | ||
| if !exists { | ||
| differences = append(differences, fmt.Errorf("slots for address %s exist in a but not in b", addr.Hex())) | ||
| continue | ||
| } | ||
| for key, valueA := range slotsA { | ||
| if valueB, exists := slotsB[key]; exists { | ||
| if valueA.Value != valueB.Value { | ||
| differences = append(differences, fmt.Errorf("slot value for address %s and key %s differs", addr.Hex(), key.Hex())) | ||
| } | ||
| } else { | ||
| differences = append(differences, fmt.Errorf("slot with key %s for address %s exists in a but not in b", key.Hex(), addr.Hex())) | ||
| } | ||
| } | ||
| for key := range slotsB { | ||
| if _, exists := slotsA[key]; !exists { | ||
| differences = append(differences, fmt.Errorf("slot with key %s for address %s exists in b but not in a", key.Hex(), addr.Hex())) | ||
| } | ||
| } | ||
| } | ||
| for addr := range b.Slots { | ||
| if _, exists := a.Slots[addr]; !exists { | ||
| differences = append(differences, fmt.Errorf("slots for address %s exist in b but not in a", addr.Hex())) | ||
| } | ||
| } | ||
|
|
||
| // Compare Codes | ||
| for hash, codeA := range a.Codes { | ||
| if codeB, exists := b.Codes[hash]; exists { | ||
| if !bytes.Equal(codeA.Code, codeB.Code) { | ||
| differences = append(differences, fmt.Errorf("code for hash %s differs", hash.Hex())) | ||
| } | ||
| } else { | ||
| differences = append(differences, fmt.Errorf("code with hash %s exists in a but not in b", hash.Hex())) | ||
| } | ||
| } | ||
| for hash := range b.Codes { | ||
| if _, exists := a.Codes[hash]; !exists { | ||
| differences = append(differences, fmt.Errorf("code with hash %s exists in b but not in a", hash.Hex())) | ||
| } | ||
| } | ||
|
|
||
| return differences | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package state_test | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "path/filepath" | ||
| "testing" | ||
|
|
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| "github.com/stretchr/testify/require" | ||
|
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| "github.com/onflow/flow-go/fvm/evm" | ||
| "github.com/onflow/flow-go/fvm/evm/emulator/state" | ||
| "github.com/onflow/flow-go/fvm/evm/testutils" | ||
| "github.com/onflow/flow-go/model/flow" | ||
| ) | ||
|
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||
| func StateDiff(t *testing.T) { | ||
| offchainState, err := state.ImportEVMStateFromGob("/var/flow2/evm-state-from-gobs-218215348/") | ||
| require.NoError(t, err) | ||
|
|
||
| enState, err := state.ImportEVMStateFromGob("/var/flow2/evm-state-from-gobs-218215348/") | ||
| require.NoError(t, err) | ||
|
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| differences := state.Diff(enState, offchainState) | ||
|
|
||
| require.Len(t, differences, 0) | ||
| } | ||
|
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| func EVMStateDiff(t *testing.T) { | ||
|
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| state1 := EVMStateFromReplayGobDir(t, "/var/flow2/evm-state-from-gobs-218215348/", uint64(218215348)) | ||
| // state2 := EVMStateFromReplayGobDir(t, "/var/flow2/evm-state-from-gobs-218215348/", uint64(218215348)) | ||
| state2 := EVMStateFromCheckpointExtract(t, "/var/flow2/evm-state-from-checkpoint-218215348/") | ||
|
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| differences := state.Diff(state1, state2) | ||
|
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| for i, diff := range differences { | ||
| fmt.Printf("Difference %d: %v\n", i, diff) | ||
| } | ||
|
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| require.Len(t, differences, 0) | ||
| } | ||
|
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| func EVMStateFromCheckpointExtract(t *testing.T, dir string) *state.EVMState { | ||
| enState, err := state.ImportEVMStateFromGob("/var/flow2/evm-state-from-gobs-218215348/") | ||
| require.NoError(t, err) | ||
| return enState | ||
| } | ||
|
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||
| func EVMStateFromReplayGobDir(t *testing.T, gobDir string, flowHeight uint64) *state.EVMState { | ||
| valueFileName, allocatorFileName := evmStateGobFileNamesByEndHeight(gobDir, flowHeight) | ||
| chainID := flow.Testnet | ||
|
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| allocatorGobs, err := testutils.DeserializeAllocator(allocatorFileName) | ||
| require.NoError(t, err) | ||
|
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| storageRoot := evm.StorageAccountAddress(chainID) | ||
| valuesGob, err := testutils.DeserializeState(valueFileName) | ||
| require.NoError(t, err) | ||
|
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| store := testutils.GetSimpleValueStorePopulated(valuesGob, allocatorGobs) | ||
|
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| bv, err := state.NewBaseView(store, storageRoot) | ||
| require.NoError(t, err) | ||
|
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| evmState, err := state.Extract(storageRoot, bv) | ||
| require.NoError(t, err) | ||
| return evmState | ||
| } | ||
|
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| func evmStateGobFileNamesByEndHeight(evmStateGobDir string, endHeight uint64) (string, string) { | ||
| valueFileName := filepath.Join(evmStateGobDir, fmt.Sprintf("values-%d.gob", endHeight)) | ||
| allocatorFileName := filepath.Join(evmStateGobDir, fmt.Sprintf("allocators-%d.gob", endHeight)) | ||
| return valueFileName, allocatorFileName | ||
| } |
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