[Engine-API] Exclude empty requests in requests list (#8859)

Consensys · Nov 28, 2024 · 9455985 · 9455985
1 parent 2494e4b
commit 9455985
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Showing 5 changed files with 83 additions and 70 deletions.
diff --git a/...ech/pegasys/teku/spec/datastructures/execution/versions/electra/ConsolidationRequest.java b/...ech/pegasys/teku/spec/datastructures/execution/versions/electra/ConsolidationRequest.java
@@ -13,6 +13,7 @@
 
 package tech.pegasys.teku.spec.datastructures.execution.versions.electra;
 
+import org.apache.tuweni.bytes.Bytes;
 import tech.pegasys.teku.bls.BLSPublicKey;
 import tech.pegasys.teku.infrastructure.bytes.Bytes20;
 import tech.pegasys.teku.infrastructure.ssz.collections.SszByteVector;
@@ -25,6 +26,7 @@ public class ConsolidationRequest
     extends Container3<ConsolidationRequest, SszByteVector, SszPublicKey, SszPublicKey> {
 
   public static final byte REQUEST_TYPE = 0x2;
+  public static final Bytes REQUEST_TYPE_PREFIX = Bytes.of(REQUEST_TYPE);
 
   protected ConsolidationRequest(
       final ConsolidationRequestSchema schema,

diff --git a/...java/tech/pegasys/teku/spec/datastructures/execution/versions/electra/DepositRequest.java b/...java/tech/pegasys/teku/spec/datastructures/execution/versions/electra/DepositRequest.java
@@ -13,6 +13,7 @@
 
 package tech.pegasys.teku.spec.datastructures.execution.versions.electra;
 
+import org.apache.tuweni.bytes.Bytes;
 import org.apache.tuweni.bytes.Bytes32;
 import tech.pegasys.teku.bls.BLSPublicKey;
 import tech.pegasys.teku.bls.BLSSignature;
@@ -30,6 +31,7 @@ public class DepositRequest
         DepositRequest, SszPublicKey, SszBytes32, SszUInt64, SszSignature, SszUInt64> {
 
   public static final byte REQUEST_TYPE = 0x0;
+  public static final Bytes REQUEST_TYPE_PREFIX = Bytes.of(REQUEST_TYPE);
 
   DepositRequest(
       final DepositRequestSchema schema,

diff --git a/...gasys/teku/spec/datastructures/execution/versions/electra/ExecutionRequestsDataCodec.java b/...gasys/teku/spec/datastructures/execution/versions/electra/ExecutionRequestsDataCodec.java
@@ -13,18 +13,16 @@
 
 package tech.pegasys.teku.spec.datastructures.execution.versions.electra;
 
+import java.util.ArrayList;
 import java.util.List;
 import org.apache.tuweni.bytes.Bytes;
-import tech.pegasys.teku.infrastructure.ssz.SszList;
 import tech.pegasys.teku.spec.datastructures.execution.ExecutionRequestsBuilder;
 
 /*
  Implement the rules for decoding and hashing execution requests according to https://eips.ethereum.org/EIPS/eip-7685
 */
 public class ExecutionRequestsDataCodec {
 
-  private static final int EXPECTED_REQUEST_DATA_ELEMENTS = 3;
-
   private final ExecutionRequestsSchema executionRequestsSchema;
 
   public ExecutionRequestsDataCodec(final ExecutionRequestsSchema executionRequestsSchema) {
@@ -34,44 +32,47 @@ public ExecutionRequestsDataCodec(final ExecutionRequestsSchema executionRequest
   /**
    * Decodes the execution requests received from the EL.
    *
-   * @param executionRequestData list of encoded execution requests from the EL
+   * @param executionRequests list of encoded execution requests from the EL
    * @return an ExecutionRequests object with the requests
    */
-  public ExecutionRequests decode(final List<Bytes> executionRequestData) {
-    if (executionRequestData.size() != EXPECTED_REQUEST_DATA_ELEMENTS) {
-      throw new IllegalArgumentException(
-          "Invalid number of execution request data elements: expected "
-              + EXPECTED_REQUEST_DATA_ELEMENTS
-              + ", received "
-              + executionRequestData.size());
-    }
-
+  public ExecutionRequests decode(final List<Bytes> executionRequests) {
     final ExecutionRequestsBuilder executionRequestsBuilder =
         new ExecutionRequestsBuilderElectra(executionRequestsSchema);
 
-    for (int index = 0; index < executionRequestData.size(); index++) {
-      // The request type is implicitly defined as the index of the element in executionRequestData
-      switch ((byte) index) {
+    byte previousRequestType = -1;
+    for (final Bytes request : executionRequests) {
+      if (request.isEmpty()) {
+        throw new IllegalArgumentException("Execution request data must not be empty");
+      }
+      final byte requestType = request.get(0);
+      if (requestType <= previousRequestType) {
+        throw new IllegalArgumentException(
+            "Execution requests are not in strictly ascending order");
+      }
+      final Bytes requestData = request.slice(1);
+      switch (requestType) {
         case DepositRequest.REQUEST_TYPE ->
             executionRequestsBuilder.deposits(
                 executionRequestsSchema
                     .getDepositRequestsSchema()
-                    .sszDeserialize(executionRequestData.get(index))
+                    .sszDeserialize(requestData)
                     .asList());
         case WithdrawalRequest.REQUEST_TYPE ->
             executionRequestsBuilder.withdrawals(
                 executionRequestsSchema
                     .getWithdrawalRequestsSchema()
-                    .sszDeserialize(executionRequestData.get(index))
+                    .sszDeserialize(requestData)
                     .asList());
         case ConsolidationRequest.REQUEST_TYPE ->
             executionRequestsBuilder.consolidations(
                 executionRequestsSchema
                     .getConsolidationRequestsSchema()
-                    .sszDeserialize(executionRequestData.get(index))
+                    .sszDeserialize(requestData)
                     .asList());
-        default -> throw new IllegalArgumentException("Invalid execution request type: " + index);
+        default ->
+            throw new IllegalArgumentException("Invalid execution request type: " + requestType);
       }
+      previousRequestType = requestType;
     }
 
     return executionRequestsBuilder.build();
@@ -84,22 +85,37 @@ public ExecutionRequests decode(final List<Bytes> executionRequestData) {
    * @return list of encoded execution requests
    */
   public List<Bytes> encode(final ExecutionRequests executionRequests) {
-    final SszList<DepositRequest> depositRequestsSszList =
-        executionRequestsSchema
-            .getDepositRequestsSchema()
-            .createFromElements(executionRequests.getDeposits());
-    final SszList<WithdrawalRequest> withdrawalRequestsSszList =
-        executionRequestsSchema
-            .getWithdrawalRequestsSchema()
-            .createFromElements(executionRequests.getWithdrawals());
-    final SszList<ConsolidationRequest> consolidationRequestsSszList =
-        executionRequestsSchema
-            .getConsolidationRequestsSchema()
-            .createFromElements(executionRequests.getConsolidations());
-
-    return List.of(
-        depositRequestsSszList.sszSerialize(),
-        withdrawalRequestsSszList.sszSerialize(),
-        consolidationRequestsSszList.sszSerialize());
+    final List<Bytes> executionRequestsData = new ArrayList<>();
+    final List<DepositRequest> deposits = executionRequests.getDeposits();
+    if (!deposits.isEmpty()) {
+      final Bytes depositRequestsData =
+          executionRequestsSchema
+              .getDepositRequestsSchema()
+              .createFromElements(deposits)
+              .sszSerialize();
+      executionRequestsData.add(
+          Bytes.concatenate(DepositRequest.REQUEST_TYPE_PREFIX, depositRequestsData));
+    }
+    final List<WithdrawalRequest> withdrawals = executionRequests.getWithdrawals();
+    if (!withdrawals.isEmpty()) {
+      final Bytes withdrawalsRequestsData =
+          executionRequestsSchema
+              .getWithdrawalRequestsSchema()
+              .createFromElements(withdrawals)
+              .sszSerialize();
+      executionRequestsData.add(
+          Bytes.concatenate(WithdrawalRequest.REQUEST_TYPE_PREFIX, withdrawalsRequestsData));
+    }
+    final List<ConsolidationRequest> consolidations = executionRequests.getConsolidations();
+    if (!consolidations.isEmpty()) {
+      final Bytes consolidationRequestsData =
+          executionRequestsSchema
+              .getConsolidationRequestsSchema()
+              .createFromElements(consolidations)
+              .sszSerialize();
+      executionRequestsData.add(
+          Bytes.concatenate(ConsolidationRequest.REQUEST_TYPE_PREFIX, consolidationRequestsData));
+    }
+    return executionRequestsData;
   }
 }
diff --git a/...a/tech/pegasys/teku/spec/datastructures/execution/versions/electra/WithdrawalRequest.java b/...a/tech/pegasys/teku/spec/datastructures/execution/versions/electra/WithdrawalRequest.java
@@ -13,6 +13,7 @@
 
 package tech.pegasys.teku.spec.datastructures.execution.versions.electra;
 
+import org.apache.tuweni.bytes.Bytes;
 import tech.pegasys.teku.bls.BLSPublicKey;
 import tech.pegasys.teku.infrastructure.bytes.Bytes20;
 import tech.pegasys.teku.infrastructure.ssz.collections.SszByteVector;
@@ -27,6 +28,7 @@ public class WithdrawalRequest
     extends Container3<WithdrawalRequest, SszByteVector, SszPublicKey, SszUInt64> {
 
   public static final byte REQUEST_TYPE = 0x1;
+  public static final Bytes REQUEST_TYPE_PREFIX = Bytes.of(REQUEST_TYPE);
 
   protected WithdrawalRequest(
       final WithdrawalRequestSchema schema,

diff --git a/...s/teku/spec/datastructures/execution/versions/electra/ExecutionRequestsDataCodecTest.java b/...s/teku/spec/datastructures/execution/versions/electra/ExecutionRequestsDataCodecTest.java
@@ -70,20 +70,18 @@ public void decodeExecutionRequestData() {
   }
 
   @Test
-  public void decodeExecutionRequestDataWithAllRequestTypesEmpty() {
-    final List<Bytes> executionRequestsData = List.of(Bytes.EMPTY, Bytes.EMPTY, Bytes.EMPTY);
-
-    final ExecutionRequests executionRequests = codec.decode(executionRequestsData);
+  public void decodeExecutionRequestsDataWithNoRequests() {
+    final ExecutionRequests executionRequests = codec.decode(List.of());
 
     assertThat(executionRequests.getDeposits()).isEmpty();
     assertThat(executionRequests.getWithdrawals()).isEmpty();
     assertThat(executionRequests.getConsolidations()).isEmpty();
   }
 
   @Test
-  public void decodeExecutionRequestDataWithOneRequestTypeEmpty() {
+  public void decodeExecutionRequestsDataWithOneRequestMissing() {
     final List<Bytes> executionRequestsData =
-        List.of(depositRequestListEncoded, Bytes.EMPTY, consolidationRequestsListEncoded);
+        List.of(depositRequestListEncoded, consolidationRequestsListEncoded);
 
     final ExecutionRequests executionRequests = codec.decode(executionRequestsData);
 
@@ -93,46 +91,39 @@ public void decodeExecutionRequestDataWithOneRequestTypeEmpty() {
   }
 
   @Test
-  public void decodeExecutionRequestDataWithMoreElementsThanExpected() {
+  public void decodeExecutionRequestsDataWithInvalidRequestType() {
     final List<Bytes> invalidExecutionRequestsData =
-        List.of(
-            depositRequestListEncoded,
-            withdrawalRequestsListEncoded,
-            consolidationRequestsListEncoded,
-            Bytes.random(10));
+        List.of(depositRequestListEncoded, withdrawalRequestsListEncoded, Bytes.of(9));
 
     assertThatThrownBy(() -> codec.decode(invalidExecutionRequestsData))
-        .isInstanceOf(IllegalArgumentException.class);
+        .isInstanceOf(IllegalArgumentException.class)
+        .hasMessage("Invalid execution request type: 9");
   }
 
   @Test
-  public void decodeExecutionRequestDataWithLessThanExpectedElements() {
+  public void decodeExecutionRequestDataWithRequestsNotOrderedInAscendingOrder() {
     final List<Bytes> invalidExecutionRequestsData =
-        List.of(depositRequestListEncoded, withdrawalRequestsListEncoded);
+        List.of(
+            depositRequestListEncoded,
+            consolidationRequestsListEncoded,
+            withdrawalRequestsListEncoded);
 
     assertThatThrownBy(() -> codec.decode(invalidExecutionRequestsData))
-        .isInstanceOf(IllegalArgumentException.class);
+        .isInstanceOf(IllegalArgumentException.class)
+        .hasMessage("Execution requests are not in strictly ascending order");
   }
 
   @Test
-  public void decodeExecutionRequestDataWithMoreThanExpectedElements() {
+  public void decodeExecutionRequestDataWithRepeatedRequestsOfSameType() {
     final List<Bytes> invalidExecutionRequestsData =
         List.of(
             depositRequestListEncoded,
-            withdrawalRequestsListEncoded,
             consolidationRequestsListEncoded,
-            depositRequestListEncoded);
-
-    assertThatThrownBy(() -> codec.decode(invalidExecutionRequestsData))
-        .isInstanceOf(IllegalArgumentException.class);
-  }
-
-  @Test
-  public void decodeExecutionRequestDataWithZeroElements() {
-    final List<Bytes> invalidExecutionRequestsData = List.of();
+            consolidationRequestsListEncoded);
 
     assertThatThrownBy(() -> codec.decode(invalidExecutionRequestsData))
-        .isInstanceOf(IllegalArgumentException.class);
+        .isInstanceOf(IllegalArgumentException.class)
+        .hasMessage("Execution requests are not in strictly ascending order");
   }
 
   @Test
@@ -165,7 +156,7 @@ public void encodeWithWithOneEmptyRequestList() {
     final List<Bytes> encodedRequests = codec.encode(executionRequests);
 
     assertThat(encodedRequests)
-        .containsExactly(depositRequestListEncoded, Bytes.EMPTY, consolidationRequestsListEncoded);
+        .containsExactly(depositRequestListEncoded, consolidationRequestsListEncoded);
   }
 
   @Test
@@ -179,14 +170,14 @@ public void encodeWithAllEmptyRequestLists() {
 
     final List<Bytes> encodedRequests = codec.encode(executionRequests);
 
-    assertThat(encodedRequests).containsExactly(Bytes.EMPTY, Bytes.EMPTY, Bytes.EMPTY);
+    assertThat(encodedRequests).isEmpty();
   }
 
   // Examples taken from
   // https://github.com/ethereum/execution-apis/blob/main/src/engine/openrpc/methods/payload.yaml
   private final Bytes depositRequestListEncoded =
       Bytes.fromHexString(
-          "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");
+          "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");
 
   private final DepositRequest depositRequest1 =
       new DepositRequest(
@@ -218,7 +209,7 @@ public void encodeWithAllEmptyRequestLists() {
 
   private final Bytes withdrawalRequestsListEncoded =
       Bytes.fromHexString(
-          "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b85103a5617937691dfeeb89b86a80d5dc9e3c9d3a1a0e7ce311e26e0bb732eabaa47ffa288f0d54de28209a62a7d29d0000000000000000000000000000000000000000000000000000010f698daeed734da114470da559bd4b4c7259e1f7952555241dcbc90cf194a2ef676fc6005f3672fada2a3645edb297a75530100000000000000");
+          "0x01a94f5374fce5edbc8e2a8697c15331677e6ebf0b85103a5617937691dfeeb89b86a80d5dc9e3c9d3a1a0e7ce311e26e0bb732eabaa47ffa288f0d54de28209a62a7d29d0000000000000000000000000000000000000000000000000000010f698daeed734da114470da559bd4b4c7259e1f7952555241dcbc90cf194a2ef676fc6005f3672fada2a3645edb297a75530100000000000000");
 
   private final WithdrawalRequest withdrawalRequest1 =
       new WithdrawalRequest(
@@ -240,7 +231,7 @@ public void encodeWithAllEmptyRequestLists() {
 
   private final Bytes consolidationRequestsListEncoded =
       Bytes.fromHexString(
-          "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b85103a5617937691dfeeb89b86a80d5dc9e3c9d3a1a0e7ce311e26e0bb732eabaa47ffa288f0d54de28209a62a7d29d098daeed734da114470da559bd4b4c7259e1f7952555241dcbc90cf194a2ef676fc6005f3672fada2a3645edb297a7553");
+          "0x02a94f5374fce5edbc8e2a8697c15331677e6ebf0b85103a5617937691dfeeb89b86a80d5dc9e3c9d3a1a0e7ce311e26e0bb732eabaa47ffa288f0d54de28209a62a7d29d098daeed734da114470da559bd4b4c7259e1f7952555241dcbc90cf194a2ef676fc6005f3672fada2a3645edb297a7553");
 
   private final ConsolidationRequest consolidationRequest1 =
       new ConsolidationRequest(