chore: Adjust the stability window

applications/cli/config/node.properties

@@ -1,6 +1,6 @@
 #protocolMagic=42
 #maxKESEvolutions=60
-#securityParam=300
+#securityParam=80
 #slotsPerKESPeriod=129600
 #updateQuorum=1
 #peerSharing=true
@@ -79,3 +79,21 @@
 ## CC Members
 #ccMembers[0].hash=scriptHash-8fc13431159fdda66347a38c55105d50d77d67abc1c368b876d52ad1
 #ccMembers[0].term=340
+
+########################################################################################################
+# Workaround for : https://github.com/bloxbean/yaci-devkit/issues/65
+#
+# The following parameters are enabled for a V2 cost model-related issue where there are 10 extra elements if the devnet
+# is started with the Conway era at epoch 0. The following parameters are enabled to configure the Conway era hard fork (HF) at epoch 1.
+# The network will start in the Babbage era and then hard fork (HF) to the Conway era at epoch 1.
+
+# The shiftStartTimeBehind=true flag is enabled to shift the start time of the network to a time behind the current time by adjusting security parameter
+# which changes the stability window. This is to speed up the process of reaching the Conway era.
+#
+# This should only be done in a development environment because if the stability window is larger than the epoch length, the reward/treasury calculations will be incorrect or ignored.
+# Therefore, for a real multi-node network, you should start the network at the current time and allow it to reach the Conway era at epoch 1.
+# So, the shiftStartTimeBehind flag should be "false" for non-development / multi-node networks.
+#
+#########################################################################################################
+conwayHardForkAtEpoch=1
+shiftStartTimeBehind=true

applications/cli/src/main/java/com/bloxbean/cardano/yacicli/localcluster/ClusterService.java

@@ -321,9 +321,17 @@ private void updateGenesis(Path clusterFolder, String clusterName, ClusterInfo c
 
         //Derive security param
         long securityParam = genesisConfigCopy.getSecurityParam();
-        if (securityParam == 0) {
-            //For stabilityWindow = epochLength * stabilityWindowFactory (0-1) ,  k = (epochLength * coefficient) / (3 * 2)
-            securityParam = Math.round(((epochLength * activeSlotsCoeff) / 3) * genesisConfig.getStabilityWindowFactor());
+
+        if (genesisConfig.getConwayHardForkAtEpoch() > 0 && genesisConfig.isShiftStartTimeBehind()) {
+            //Workaround for https://github.com/bloxbean/yaci-devkit/issues/65
+            //Calculate required securityParam to jump directly to epoch = 1
+            long expectedStabilityWindow = Math.round(epochLength * 1.5);
+            securityParam = Math.round(expectedStabilityWindow * activeSlotsCoeff) / 3;
+        } else {
+            if (securityParam == 0) {
+                //For stabilityWindow = epochLength * stabilityWindowFactory (0-1) ,  k = (epochLength * coefficient) / (3 * 2)
+                securityParam = Math.round(((epochLength * activeSlotsCoeff) / 3) * genesisConfig.getStabilityWindowFactor());
+            }
         }
 
         values.put("securityParam", securityParam);

applications/cli/src/main/java/com/bloxbean/cardano/yacicli/localcluster/ClusterStartService.java

@@ -262,9 +262,8 @@ private boolean setupFirstRun(ClusterInfo clusterInfo, Path clusterFolder, Consu
                 maxBehindBySecond = clusterInfo.getEpochLength();
             }
 
-            long shiftTimeBehindSeconds = genesisConfig.getShiftStartTimeBehindBySecs() > 0 ? genesisConfig.getShiftStartTimeBehindBySecs() : maxBehindBySecond;
-            byronStartTime = byronStartTime - shiftTimeBehindSeconds;
-            writer.accept(success("Updating Start time to current time - " + shiftTimeBehindSeconds + " in byron-genesis.json"));
+            byronStartTime = byronStartTime - maxBehindBySecond;
+            writer.accept(success("Updating Start time to current time - " + maxBehindBySecond + " in byron-genesis.json"));
         }
         jsonNode.set("startTime", new LongNode(byronStartTime));
         objectMapper.writer(new DefaultPrettyPrinter()).writeValue(byronGenesis.toFile(), jsonNode);

applications/cli/src/main/java/com/bloxbean/cardano/yacicli/localcluster/config/GenesisConfig.java

@@ -162,7 +162,6 @@ public class GenesisConfig {
     //Introduced for the issue https://github.com/bloxbean/yaci-devkit/issues/65
     private int conwayHardForkAtEpoch = 0;
     private boolean shiftStartTimeBehind = false;
-    private int shiftStartTimeBehindBySecs = 0; //By default, it will be epochLength
 
     @PostConstruct
     public void postInit() {
@@ -347,7 +346,6 @@ public Map getConfigMap() {
 
         map.put("conwayHardForkAtEpoch", conwayHardForkAtEpoch);
         map.put("shiftStartTimeBehind", shiftStartTimeBehind);
-        map.put("shiftStartTimeBehindBySecs", shiftStartTimeBehindBySecs);
 
         return map;
     }
@@ -438,7 +436,6 @@ public GenesisConfig copy() {
 
         genesisConfig.setConwayHardForkAtEpoch(conwayHardForkAtEpoch);
         genesisConfig.setShiftStartTimeBehind(shiftStartTimeBehind);
-        genesisConfig.setShiftStartTimeBehindBySecs(shiftStartTimeBehindBySecs);
 
         return genesisConfig;
     }

config/node.properties

@@ -6,7 +6,7 @@
 #################################################################################################################
 
 #maxKESEvolutions=60
-#securityParam=300
+#securityParam=80
 #slotsPerKESPeriod=129600
 #updateQuorum=1
 #peerSharing=true
@@ -85,3 +85,21 @@
 ## CC Members
 #ccMembers[0].hash=scriptHash-8fc13431159fdda66347a38c55105d50d77d67abc1c368b876d52ad1
 #ccMembers[0].term=340
+
+########################################################################################################
+# Workaround for : https://github.com/bloxbean/yaci-devkit/issues/65
+#
+# The following parameters are enabled for a V2 cost model-related issue where there are 10 extra elements if the devnet
+# is started with the Conway era at epoch 0. The following parameters are enabled to configure the Conway era hard fork (HF) at epoch 1.
+# The network will start in the Babbage era and then hard fork (HF) to the Conway era at epoch 1.
+
+# The shiftStartTimeBehind=true flag is enabled to shift the start time of the network to a time behind the current time by adjusting security parameter
+# which changes the stability window. This is to speed up the process of reaching the Conway era.
+#
+# This should only be done in a development environment because if the stability window is larger than the epoch length, the reward/treasury calculations will be incorrect or ignored.
+# Therefore, for a real multi-node network, you should start the network at the current time and allow it to reach the Conway era at epoch 1.
+# So, the shiftStartTimeBehind flag should be "false" for non-development / multi-node networks.
+#
+#########################################################################################################
+conwayHardForkAtEpoch=1
+shiftStartTimeBehind=true