/
ClearEmptyAccountStrategy.java
63 lines (53 loc) · 2.11 KB
/
ClearEmptyAccountStrategy.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/*
* Copyright contributors to Hyperledger Besu.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
package org.hyperledger.besu.ethereum.mainnet;
import org.hyperledger.besu.datatypes.Address;
import org.hyperledger.besu.evm.account.Account;
import org.hyperledger.besu.evm.worldstate.WorldUpdater;
import java.util.ArrayList;
import java.util.List;
/** A helper class to store the historical block hash. */
public interface ClearEmptyAccountStrategy {
void process(final WorldUpdater worldUpdater);
class NotClearEmptyAccount implements ClearEmptyAccountStrategy {
@Override
public void process(final WorldUpdater worldUpdater) {
// nothing to do
}
}
class ClearEmptyAccount implements ClearEmptyAccountStrategy {
@Override
public void process(final WorldUpdater worldUpdater) {
new ArrayList<>(worldUpdater.getTouchedAccounts())
.stream()
.filter(Account::isEmpty)
.forEach(a -> worldUpdater.deleteAccount(a.getAddress()));
}
}
class ClearEmptyAccountWithException implements ClearEmptyAccountStrategy {
List<Address> exceptionList;
public ClearEmptyAccountWithException(final List<Address> exceptionList) {
this.exceptionList = exceptionList;
}
@Override
public void process(final WorldUpdater worldUpdater) {
new ArrayList<>(worldUpdater.getTouchedAccounts())
.stream()
.filter(account -> !exceptionList.contains(account.getAddress()))
.filter(Account::isEmpty)
.forEach(a -> worldUpdater.deleteAccount(a.getAddress()));
}
}
}