refactor: system transaction proto changes

hapi/hedera-protobufs/platform/event/gossip_event.proto

@@ -62,7 +62,20 @@ message GossipEvent {
    * <p>
    * This field MAY contain zero transactions.<br/>
    * This field MUST NOT exceed `maxTransactionCountPerEvent` entries, initially `245760`.<br/>
-   * This total size of this field MUST NOT exceed `maxTransactionBytesPerEvent`, initially `245760` bytes.
+   * This total size of this field MUST NOT exceed `maxTransactionBytesPerEvent`, initially `245760` bytes.<br/>
+   * Deprecated in favor of the `transaction` field. The idea is to clean the design of event transactions.<br/>
+   * This is transitional state until 'transaction' field is fully adopted.
    */
-  repeated EventTransaction event_transaction = 3;
+  repeated EventTransaction event_transaction = 3 [deprecated = true];
+
+  /**
+   * A list of serialized transactions.
+   * <p>
+   * This field MAY contain zero transactions.<br/>
+   * Each transaction in this list SHALL be presented exactly as
+   * it was supplied to the consensus algorithm.<br/>
+   * This field MUST contain one entry for each transaction
+   * included in this gossip event.
+   */
+  repeated bytes transactions = 4;
 }

hapi/hedera-protobufs/services/basic_types.proto

@@ -1269,6 +1269,11 @@ enum HederaFunctionality {
      * Submit a node public tss encryption key as part of the Threshold Signature Scheme (TSS).
      */
     TssEncryptionKey = 99;
+
+    /**
+     * Submit a signature of a state snapshot gossiped to other nodes
+     */
+    StateSignatureTransaction = 100;
 }
 
 /**

hapi/hedera-protobufs/services/transaction_body.proto

@@ -94,6 +94,8 @@ import "auxiliary/tss/tss_vote.proto";
 import "auxiliary/tss/tss_share_signature.proto";
 import "auxiliary/tss/tss_encryption_key.proto";
 
+import "event/state_signature_transaction.proto";
+
 /**
  * A single transaction. All transaction types are possible here.
  */
@@ -435,13 +437,18 @@ message TransactionBody {
         com.hedera.hapi.services.auxiliary.tss.TssVoteTransactionBody tssVote = 62;
 
         /**
-         * A transaction body for a 'tssShareSignature` request
+         * A transaction body for node signature as part of the Threshold Signature Scheme (TSS) processing.
          */
         com.hedera.hapi.services.auxiliary.tss.TssShareSignatureTransactionBody tssShareSignature = 63;
 
         /**
          * A transaction body for a 'tssEncryptionKey` request
          */
         com.hedera.hapi.services.auxiliary.tss.TssEncryptionKeyTransactionBody tssEncryptionKey = 64;
+
+        /**
+         * A transaction body for signature of a state snapshot gossiped to other nodes
+         */
+        com.hedera.hapi.platform.event.StateSignatureTransaction state_signature_transaction = 65;
     }
 }

hapi/src/main/java/com/hedera/hapi/util/HapiUtils.java

@@ -238,6 +238,7 @@
             case TSS_VOTE -> HederaFunctionality.TSS_VOTE;
             case TSS_SHARE_SIGNATURE -> HederaFunctionality.TSS_SHARE_SIGNATURE;
             case TSS_ENCRYPTION_KEY -> HederaFunctionality.TSS_ENCRYPTION_KEY;
+            case STATE_SIGNATURE_TRANSACTION -> HederaFunctionality.STATE_SIGNATURE_TRANSACTION;
             case UNSET -> throw new UnknownHederaFunctionality();
         };
     }

hedera-node/hedera-config/src/main/java/com/hedera/node/config/data/ApiPermissionConfig.java

@@ -56,6 +56,7 @@
 import static com.hedera.hapi.node.base.HederaFunctionality.SCHEDULE_DELETE;
 import static com.hedera.hapi.node.base.HederaFunctionality.SCHEDULE_GET_INFO;
 import static com.hedera.hapi.node.base.HederaFunctionality.SCHEDULE_SIGN;
+import static com.hedera.hapi.node.base.HederaFunctionality.STATE_SIGNATURE_TRANSACTION;
 import static com.hedera.hapi.node.base.HederaFunctionality.SYSTEM_DELETE;
 import static com.hedera.hapi.node.base.HederaFunctionality.SYSTEM_UNDELETE;
 import static com.hedera.hapi.node.base.HederaFunctionality.TOKEN_ACCOUNT_WIPE;
@@ -267,7 +268,8 @@ public record ApiPermissionConfig(
         @ConfigProperty(defaultValue = "0-0") PermissionedAccountsRange tssMessage,
         @ConfigProperty(defaultValue = "0-0") PermissionedAccountsRange tssVote,
         @ConfigProperty(defaultValue = "0-0") PermissionedAccountsRange tssShareSignature,
-        @ConfigProperty(defaultValue = "0-0") PermissionedAccountsRange tssEncryptionKey) {
+        @ConfigProperty(defaultValue = "0-0") PermissionedAccountsRange tssEncryptionKey,
+        @ConfigProperty(defaultValue = "0-0") PermissionedAccountsRange stateSignature) {
 
     private static final EnumMap<HederaFunctionality, Function<ApiPermissionConfig, PermissionedAccountsRange>>
             permissionKeys = new EnumMap<>(HederaFunctionality.class);
@@ -349,6 +351,7 @@ public record ApiPermissionConfig(
         permissionKeys.put(TSS_VOTE, c -> c.tssVote);
         permissionKeys.put(TSS_SHARE_SIGNATURE, c -> c.tssShareSignature);
         permissionKeys.put(TSS_ENCRYPTION_KEY, c -> c.tssEncryptionKey);
+        permissionKeys.put(STATE_SIGNATURE_TRANSACTION, c -> c.stateSignature);
     }
 
     /**

platform-sdk/swirlds-platform-core/src/main/java/com/swirlds/platform/event/PlatformEvent.java

@@ -117,7 +117,9 @@ public PlatformEvent(@NonNull final UnsignedEvent unsignedEvent, @NonNull final
                         Objects.requireNonNull(unsignedEvent, "The unsignedEvent must not be null")
                                 .getEventCore(),
                         Objects.requireNonNull(signature, "The signature must not be null"),
-                        unsignedEvent.getEventTransactions()),
+                        unsignedEvent.getEventTransactions(),
+                        // TODO: adapt new transaction format
+                        null),
                 unsignedEvent.getMetadata());
     }