[PAN-2343] made transactionpool expect a filter interface (#1030)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

ethereum/core/build.gradle

@@ -31,7 +31,6 @@ dependencies {
   implementation project(':enclave')
   implementation project(':ethereum:rlp')
   implementation project(':ethereum:trie')
-  implementation project(':ethereum:permissioning')
   implementation project(':metrics')
   implementation project(':services:kvstore')
 

ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/core/AccountFilter.java

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * 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.
+ */
+package tech.pegasys.pantheon.ethereum.core;
+
+@FunctionalInterface
+public interface AccountFilter {
+  boolean permitted(String account);
+}

ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/core/TransactionPool.java

@@ -25,7 +25,6 @@ import tech.pegasys.pantheon.ethereum.mainnet.ProtocolSchedule;
 import tech.pegasys.pantheon.ethereum.mainnet.TransactionValidator;
 import tech.pegasys.pantheon.ethereum.mainnet.TransactionValidator.TransactionInvalidReason;
 import tech.pegasys.pantheon.ethereum.mainnet.ValidationResult;
-import tech.pegasys.pantheon.ethereum.permissioning.AccountWhitelistController;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -50,7 +49,7 @@ public class TransactionPool implements BlockAddedObserver {
   private final ProtocolSchedule<?> protocolSchedule;
   private final ProtocolContext<?> protocolContext;
   private final TransactionBatchAddedListener transactionBatchAddedListener;
-  private Optional<AccountWhitelistController> accountWhitelistController = Optional.empty();
+  private Optional<AccountFilter> accountFilter = Optional.empty();
 
   public TransactionPool(
       final PendingTransactions pendingTransactions,
@@ -136,7 +135,7 @@ public class TransactionPool implements BlockAddedObserver {
     }
 
     final String sender = transaction.getSender().toString();
-    if (accountIsNotWhitelisted(sender)) {
+    if (accountIsNotPermitted(sender)) {
       return ValidationResult.invalid(
           TransactionInvalidReason.TX_SENDER_NOT_AUTHORIZED,
           String.format("Sender %s is not on the Account Whitelist", sender));
@@ -166,8 +165,8 @@ public class TransactionPool implements BlockAddedObserver {
         .orElseGet(() -> ValidationResult.invalid(CHAIN_HEAD_WORLD_STATE_NOT_AVAILABLE));
   }
 
-  private boolean accountIsNotWhitelisted(final String account) {
-    return accountWhitelistController.map(c -> !c.contains(account)).orElse(false);
+  private boolean accountIsNotPermitted(final String account) {
+    return accountFilter.map(c -> !c.permitted(account)).orElse(false);
   }
 
   private BlockHeader getChainHeadBlockHeader() {
@@ -180,7 +179,7 @@ public class TransactionPool implements BlockAddedObserver {
     void onTransactionsAdded(Iterable<Transaction> transactions);
   }
 
-  public void setAccountWhitelist(AccountWhitelistController accountWhitelist) {
-    accountWhitelistController = Optional.of(accountWhitelist);
+  public void setAccountFilter(final AccountFilter accountFilter) {
+    this.accountFilter = Optional.of(accountFilter);
   }
 }

ethereum/core/src/test/java/tech/pegasys/pantheon/ethereum/core/TransactionPoolTest.java

@@ -41,7 +41,6 @@ import tech.pegasys.pantheon.ethereum.mainnet.ProtocolSchedule;
 import tech.pegasys.pantheon.ethereum.mainnet.ProtocolSpec;
 import tech.pegasys.pantheon.ethereum.mainnet.TransactionValidator;
 import tech.pegasys.pantheon.ethereum.mainnet.ValidationResult;
-import tech.pegasys.pantheon.ethereum.permissioning.AccountWhitelistController;
 import tech.pegasys.pantheon.util.uint.UInt256;
 
 import java.util.List;
@@ -72,8 +71,7 @@ public class TransactionPoolTest {
   private final Transaction transaction2 = createTransaction(2);
   private TransactionPool transactionPool;
   private long genesisBlockGasLimit;
-  private final AccountWhitelistController accountWhitelistController =
-      mock(AccountWhitelistController.class);
+  private final AccountFilter accountFilter = mock(AccountFilter.class);
 
   @Before
   public void setUp() {
@@ -361,10 +359,10 @@ public class TransactionPoolTest {
 
   @Test
   public void shouldAllowWhitelistedTransactionWhenWhitelistEnabled() {
-    transactionPool.setAccountWhitelist(accountWhitelistController);
+    transactionPool.setAccountFilter(accountFilter);
     givenTransactionIsValid(transaction1);
 
-    when(accountWhitelistController.contains(transaction1.getSender().toString())).thenReturn(true);
+    when(accountFilter.permitted(transaction1.getSender().toString())).thenReturn(true);
 
     assertThat(transactionPool.addLocalTransaction(transaction1)).isEqualTo(valid());
 
@@ -373,11 +371,10 @@ public class TransactionPoolTest {
 
   @Test
   public void shouldRejectNonWhitelistedTransactionWhenWhitelistEnabled() {
-    transactionPool.setAccountWhitelist(accountWhitelistController);
+    transactionPool.setAccountFilter(accountFilter);
     givenTransactionIsValid(transaction1);
 
-    when(accountWhitelistController.contains(transaction1.getSender().toString()))
-        .thenReturn(false);
+    when(accountFilter.permitted(transaction1.getSender().toString())).thenReturn(false);
 
     assertThat(transactionPool.addLocalTransaction(transaction1))
         .isEqualTo(ValidationResult.invalid(TX_SENDER_NOT_AUTHORIZED));

pantheon/src/main/java/tech/pegasys/pantheon/RunnerBuilder.java

@@ -255,7 +255,7 @@ public class RunnerBuilder {
                 configuration -> {
                   final AccountWhitelistController whitelistController =
                       new AccountWhitelistController(configuration);
-                  transactionPool.setAccountWhitelist(whitelistController);
+                  transactionPool.setAccountFilter(whitelistController::contains);
                   return whitelistController;
                 });