Merge pull request #20 from bloxbean/costmdl_hash

feat: Added costmodel hash to ProtocolParamUpdate
bloxbean · Aug 25, 2023 · 0389d7a · 0389d7a
2 parents cd0564b + 9afa737
commit 0389d7a
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diff --git a/core/src/main/java/com/bloxbean/cardano/yaci/core/model/ProtocolParamUpdate.java b/core/src/main/java/com/bloxbean/cardano/yaci/core/model/ProtocolParamUpdate.java
@@ -39,6 +39,7 @@ public class ProtocolParamUpdate {
 
     //Alonzo changes
     private Map<Integer, String> costModels; //18
+    private String costModelsHash; //derived field
 
     //ex_unit_prices
     private BigDecimal priceMem; //19

diff --git a/core/src/main/java/com/bloxbean/cardano/yaci/core/model/serializers/UpdateSerializer.java b/core/src/main/java/com/bloxbean/cardano/yaci/core/model/serializers/UpdateSerializer.java
@@ -1,6 +1,7 @@
 package com.bloxbean.cardano.yaci.core.model.serializers;
 
 import co.nstant.in.cbor.model.*;
+import com.bloxbean.cardano.client.crypto.Blake2bUtil;
 import com.bloxbean.cardano.client.util.Tuple;
 import com.bloxbean.cardano.yaci.core.model.ProtocolParamUpdate;
 import com.bloxbean.cardano.yaci.core.model.Update;
@@ -122,6 +123,7 @@ public ProtocolParamUpdate getProtocolParams(Map genesisProtocolParamsMap) {
 
         //CostModels
         java.util.Map<Integer, String> costModelMap = null;
+        String costModelsHash = null;
         itemDI = genesisProtocolParamsMap.get(new UnsignedInteger(18));
         if (itemDI != null) {
             costModelMap = new LinkedHashMap<>();
@@ -131,6 +133,9 @@ public ProtocolParamUpdate getProtocolParams(Map genesisProtocolParamsMap) {
                 String costModel = HexUtil.encodeHexString(CborSerializationUtil.serialize(itemDIMap.get(key)));
                 costModelMap.put(version, costModel);
             }
+
+            var cbor = CborSerializationUtil.serialize(itemDI);
+            costModelsHash = HexUtil.encodeHexString(Blake2bUtil.blake2bHash256(cbor));
         }
 
         //exUnits prices
@@ -196,6 +201,7 @@ public ProtocolParamUpdate getProtocolParams(Map genesisProtocolParamsMap) {
                 .minPoolCost(minPoolCost)
                 .adaPerUtxoByte(adaPerUtxoBytes)
                 .costModels(costModelMap)
+                .costModelsHash(costModelsHash)
                 .priceMem(priceMem)
                 .priceStep(priceSteps)
                 .maxTxExMem(maxTxExMem)