7288: include WithdrawalRequestPredeployAddress in genesis configuration

CHANGELOG.md

@@ -7,6 +7,7 @@
 - --Xbonsai-limit-trie-logs-enabled is deprecated, use --bonsai-limit-trie-logs-enabled instead
 - --Xbonsai-trie-logs-pruning-window-size is deprecated, use --bonsai-trie-logs-pruning-window-size instead
 - `besu storage x-trie-log` subcommand is deprecated, use `besu storage trie-log` instead
+- Allow configuration of Withdrawal Request Contract Address via genesis configuration [#7356](https://github.com/hyperledger/besu/pull/7356)
 
 ### Breaking Changes
 

config/src/main/java/org/hyperledger/besu/config/GenesisConfigOptions.java

@@ -525,6 +525,13 @@ default boolean isConsensusMigration() {
    */
   boolean isFixedBaseFee();
 
+  /**
+   * The withdrawal request predeploy address
+   *
+   * @return the withdrawal request predeploy address
+   */
+  Optional<Address> getWithdrawalRequestContractAddress();
+
   /**
    * The deposit contract address that should be in the logger field in Receipt of Deposit
    * transaction

config/src/main/java/org/hyperledger/besu/config/JsonGenesisConfigOptions.java

@@ -49,6 +49,8 @@ public class JsonGenesisConfigOptions implements GenesisConfigOptions {
   private static final String CHECKPOINT_CONFIG_KEY = "checkpoint";
   private static final String ZERO_BASE_FEE_KEY = "zerobasefee";
   private static final String FIXED_BASE_FEE_KEY = "fixedbasefee";
+  private static final String WITHDRAWAL_REQUEST_CONTRACT_ADDRESS_KEY =
+      "withdrawalrequestcontractaddress";
   private static final String DEPOSIT_CONTRACT_ADDRESS_KEY = "depositcontractaddress";
 
   private final ObjectNode configRoot;
@@ -438,6 +440,13 @@ public boolean isFixedBaseFee() {
     return getOptionalBoolean(FIXED_BASE_FEE_KEY).orElse(false);
   }
 
+  @Override
+  public Optional<Address> getWithdrawalRequestContractAddress() {
+    Optional<String> inputAddress =
+        JsonUtil.getString(configRoot, WITHDRAWAL_REQUEST_CONTRACT_ADDRESS_KEY);
+    return inputAddress.map(Address::fromHexString);
+  }
+
   @Override
   public Optional<Address> getDepositContractAddress() {
     Optional<String> inputAddress = JsonUtil.getString(configRoot, DEPOSIT_CONTRACT_ADDRESS_KEY);
@@ -492,6 +501,8 @@ public Map<String, Object> asMap() {
     getEvmStackSize().ifPresent(l -> builder.put("evmstacksize", l));
     getEcip1017EraRounds().ifPresent(l -> builder.put("ecip1017EraRounds", l));
 
+    getWithdrawalRequestContractAddress()
+        .ifPresent(l -> builder.put("withdrawalRequestContractAddress", l));
     getDepositContractAddress().ifPresent(l -> builder.put("depositContractAddress", l));
 
     if (isClique()) {

config/src/main/java/org/hyperledger/besu/config/StubGenesisConfigOptions.java

@@ -457,6 +457,11 @@ public List<Long> getForkBlockTimestamps() {
     return Collections.emptyList();
   }
 
+  @Override
+  public Optional<Address> getWithdrawalRequestContractAddress() {
+    return Optional.empty();
+  }
+
   @Override
   public Optional<Address> getDepositContractAddress() {
     return Optional.empty();

config/src/test/java/org/hyperledger/besu/config/GenesisConfigOptionsTest.java

@@ -332,6 +332,32 @@ void asMapIncludesFixedBaseFee() {
     assertThat(config.asMap()).containsOnlyKeys("fixedBaseFee").containsValue(true);
   }
 
+  @Test
+  void shouldGetWithdrawalRequestContractAddress() {
+    final GenesisConfigOptions config =
+        fromConfigOptions(
+            singletonMap(
+                "withdrawalRequestContractAddress", "0x00000000219ab540356cbb839cbe05303d7705fa"));
+    assertThat(config.getWithdrawalRequestContractAddress())
+        .hasValue(Address.fromHexString("0x00000000219ab540356cbb839cbe05303d7705fa"));
+  }
+
+  @Test
+  void shouldNotHaveWithdrawalRequestContractAddressWhenEmpty() {
+    final GenesisConfigOptions config = fromConfigOptions(emptyMap());
+    assertThat(config.getWithdrawalRequestContractAddress()).isEmpty();
+  }
+
+  @Test
+  void asMapIncludesWithdrawalRequestContractAddress() {
+    final GenesisConfigOptions config =
+        fromConfigOptions(Map.of("withdrawalRequestContractAddress", "0x0"));
+
+    assertThat(config.asMap())
+        .containsOnlyKeys("withdrawalRequestContractAddress")
+        .containsValue(Address.ZERO);
+  }
+
   @Test
   void shouldGetDepositContractAddress() {
     final GenesisConfigOptions config =

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java

@@ -17,6 +17,7 @@
 import static org.hyperledger.besu.ethereum.mainnet.requests.DepositRequestProcessor.DEFAULT_DEPOSIT_CONTRACT_ADDRESS;
 import static org.hyperledger.besu.ethereum.mainnet.requests.MainnetRequestsValidator.pragueRequestsProcessors;
 import static org.hyperledger.besu.ethereum.mainnet.requests.MainnetRequestsValidator.pragueRequestsValidator;
+import static org.hyperledger.besu.ethereum.mainnet.requests.WithdrawalRequestProcessor.DEFAULT_WITHDRAWAL_REQUEST_CONTRACT_ADDRESS;
 
 import org.hyperledger.besu.config.GenesisConfigOptions;
 import org.hyperledger.besu.config.PowAlgorithm;
@@ -766,6 +767,10 @@ static ProtocolSpecBuilder pragueDefinition(
       final boolean isParallelTxProcessingEnabled,
       final MetricsSystem metricsSystem) {
 
+    final Address withdrawalRequestContractAddress =
+        genesisConfigOptions
+            .getWithdrawalRequestContractAddress()
+            .orElse(DEFAULT_WITHDRAWAL_REQUEST_CONTRACT_ADDRESS);
     final Address depositContractAddress =
         genesisConfigOptions.getDepositContractAddress().orElse(DEFAULT_DEPOSIT_CONTRACT_ADDRESS);
 
@@ -791,7 +796,8 @@ static ProtocolSpecBuilder pragueDefinition(
         // EIP-7002 Withdrawals / EIP-6610 Deposits / EIP-7685 Requests
         .requestsValidator(pragueRequestsValidator(depositContractAddress))
         // EIP-7002 Withdrawals / EIP-6610 Deposits / EIP-7685 Requests
-        .requestProcessorCoordinator(pragueRequestsProcessors(depositContractAddress))
+        .requestProcessorCoordinator(
+            pragueRequestsProcessors(withdrawalRequestContractAddress, depositContractAddress))
 
         // change to accept EIP-7702 transactions
         .transactionValidatorFactoryBuilder(

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/requests/MainnetRequestsValidator.java

@@ -28,9 +28,11 @@ public static RequestsValidatorCoordinator pragueRequestsValidator(
   }
 
   public static RequestProcessorCoordinator pragueRequestsProcessors(
-      final Address depositContractAddress) {
+      final Address withdrawalRequestContractAddress, final Address depositContractAddress) {
     return new RequestProcessorCoordinator.Builder()
-        .addProcessor(RequestType.WITHDRAWAL, new WithdrawalRequestProcessor())
+        .addProcessor(
+            RequestType.WITHDRAWAL,
+            new WithdrawalRequestProcessor(withdrawalRequestContractAddress))
         .addProcessor(RequestType.CONSOLIDATION, new ConsolidationRequestProcessor())
         .addProcessor(RequestType.DEPOSIT, new DepositRequestProcessor(depositContractAddress))
         .build();

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/requests/WithdrawalRequestProcessor.java

@@ -26,7 +26,7 @@
 public class WithdrawalRequestProcessor
     extends AbstractSystemCallRequestProcessor<WithdrawalRequest> {
 
-  public static final Address WITHDRAWAL_REQUEST_PREDEPLOY_ADDRESS =
+  public static final Address DEFAULT_WITHDRAWAL_REQUEST_CONTRACT_ADDRESS =
       Address.fromHexString("0x00A3ca265EBcb825B45F985A16CEFB49958cE017");
 
   private static final int ADDRESS_BYTES = 20;
@@ -35,14 +35,20 @@ public class WithdrawalRequestProcessor
   private static final int WITHDRAWAL_REQUEST_BYTES_SIZE =
       ADDRESS_BYTES + PUBLIC_KEY_BYTES + AMOUNT_BYTES;
 
+  private final Address withdrawalRequestContractAddress;
+
+  public WithdrawalRequestProcessor(final Address withdrawalRequestContractAddress) {
+    this.withdrawalRequestContractAddress = withdrawalRequestContractAddress;
+  }
+
   /**
    * Gets the call address for withdrawal requests.
    *
    * @return The call address.
    */
   @Override
   protected Address getCallAddress() {
-    return WITHDRAWAL_REQUEST_PREDEPLOY_ADDRESS;
+    return withdrawalRequestContractAddress;
   }
 
   /**