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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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48
tests/state_test_util.go
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@ -20,7 +20,6 @@ import (
"bytes"
"fmt"
"io"
"math/big"
"strconv"
"strings"
"testing"
@ -99,7 +98,7 @@ func benchStateTest(chainConfig *params.ChainConfig, test VmTest, env map[string
statedb := makePreState(db, test.Pre)
b.StartTimer()
RunState(chainConfig, statedb, env, test.Exec)
RunState(chainConfig, statedb, db, env, test.Exec)
}
func runStateTests(chainConfig *params.ChainConfig, tests map[string]VmTest, skipTests []string) error {
@ -143,16 +142,9 @@ func runStateTest(chainConfig *params.ChainConfig, test VmTest) error {
env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
}
var (
ret []byte
// gas *big.Int
// err error
logs []*types.Log
)
ret, logs, root, _ := RunState(chainConfig, statedb, db, env, test.Transaction)
ret, logs, _, _ = RunState(chainConfig, statedb, env, test.Transaction)
// Compare expected and actual return
// Return value:
var rexp []byte
if strings.HasPrefix(test.Out, "#") {
n, _ := strconv.Atoi(test.Out[1:])
@ -163,61 +155,43 @@ func runStateTest(chainConfig *params.ChainConfig, test VmTest) error {
if !bytes.Equal(rexp, ret) {
return fmt.Errorf("return failed. Expected %x, got %x\n", rexp, ret)
}
// check post state
// Post state content:
for addr, account := range test.Post {
address := common.HexToAddress(addr)
if !statedb.Exist(address) {
return fmt.Errorf("did not find expected post-state account: %s", addr)
}
if balance := statedb.GetBalance(address); balance.Cmp(math.MustParseBig256(account.Balance)) != 0 {
return fmt.Errorf("(%x) balance failed. Expected: %v have: %v\n", address[:4], math.MustParseBig256(account.Balance), balance)
}
if nonce := statedb.GetNonce(address); nonce != math.MustParseUint64(account.Nonce) {
return fmt.Errorf("(%x) nonce failed. Expected: %v have: %v\n", address[:4], account.Nonce, nonce)
}
for addr, value := range account.Storage {
v := statedb.GetState(address, common.HexToHash(addr))
vexp := common.HexToHash(value)
if v != vexp {
return fmt.Errorf("storage failed:\n%x: %s:\nexpected: %x\nhave: %x\n(%v %v)\n", address[:4], addr, vexp, v, vexp.Big(), v.Big())
}
}
}
root, _ := statedb.Commit(false)
// Root:
if common.HexToHash(test.PostStateRoot) != root {
return fmt.Errorf("Post state root error. Expected: %s have: %x", test.PostStateRoot, root)
}
// check logs
if len(test.Logs) > 0 {
if err := checkLogs(test.Logs, logs); err != nil {
return err
}
}
return nil
// Logs:
return checkLogs(test.Logs, logs)
}
func RunState(chainConfig *params.ChainConfig, statedb *state.StateDB, env, tx map[string]string) ([]byte, []*types.Log, *big.Int, error) {
func RunState(chainConfig *params.ChainConfig, statedb *state.StateDB, db ethdb.Database, env, tx map[string]string) ([]byte, []*types.Log, common.Hash, error) {
environment, msg := NewEVMEnvironment(false, chainConfig, statedb, env, tx)
gaspool := new(core.GasPool).AddGas(math.MustParseBig256(env["currentGasLimit"]))
root, _ := statedb.Commit(false)
statedb.Reset(root)
snapshot := statedb.Snapshot()
ret, gasUsed, err := core.ApplyMessage(environment, msg, gaspool)
ret, _, err := core.ApplyMessage(environment, msg, gaspool)
if err != nil {
statedb.RevertToSnapshot(snapshot)
}
statedb.Commit(chainConfig.IsEIP158(environment.Context.BlockNumber))
return ret, statedb.Logs(), gasUsed, err
root, _ := statedb.CommitTo(db, chainConfig.IsEIP158(environment.Context.BlockNumber))
return ret, statedb.Logs(), root, err
}