Investigate epochData offset, and EpochSettingsMessageoffsets, updating Miro Schema

Author: turmelclem

epoch_grid.md

@@ -0,0 +1,8 @@
+|Configuration parameter| Node| Epoch + 0| Epoch + 1| Epoch + 2| Epoch + 3| Epoch + 4|
+| --- | --- | --- | --- | --- | --- | --- | 
+|protocol parameters| aggregator (leader)| update local parameters. <br> Persist epoch setting for epoch+2 in database| advertise new protocol parameters on `/epoch-settings`| -| - | -|
+|protocol parameters| aggregator (follower)| -| fetch new protocol parameters on `/epoch-settings` and does signer registration with them| -| - | -|
+|protocol parameters| signer| -| fetch new protocol parameters on `/epoch-settings` <br> - signer_registration_protocol_parameters for epoch +1| -| - | -|
+|entity types config| aggregator (leader) | --- | --- | --- | --- | --- | 
+|entity types config| aggregator (follower) | --- | --- | --- | --- | --- | 
+|entity types config| signer | --- | fetch new protocol parameters on `/epoch-settings`<br> - entity types config for epoch - 1| --- | --- | --- | 

mithril-aggregator/src/dependency_injection/builder/enablers/epoch.rs

@@ -5,6 +5,7 @@ use crate::dependency_injection::{DependenciesBuilder, EpochServiceWrapper, Resu
 use crate::get_dependency;
 use crate::services::{EpochServiceDependencies, MithrilEpochService};
 impl DependenciesBuilder {
+    // is this dead code ???
     async fn build_epoch_service(&mut self) -> Result<EpochServiceWrapper> {
         let verification_key_store = self.get_verification_key_store().await?;
         let epoch_settings_storer = self.get_epoch_settings_store().await?;

mithril-aggregator/src/services/epoch_service.rs

@@ -273,7 +273,7 @@ impl MithrilEpochService {
 
         self.epoch_settings_storer
             .save_epoch_settings(
-                recording_epoch,
+                recording_epoch,    //epoch + 2
                 self.future_epoch_settings.clone(),
             )
             .await
@@ -347,17 +347,17 @@ impl EpochService for MithrilEpochService {
         self.epoch_data = Some(EpochData {
             cardano_era,
             mithril_era,
-            epoch,
-            current_epoch_settings,
-            next_epoch_settings,
-            signer_registration_epoch_settings,
-            current_signers_with_stake,
-            next_signers_with_stake,
-            current_signers,
-            next_signers,
-            total_stakes_signers,
-            total_next_stakes_signers,
-            signed_entity_config,
+            epoch,                              //epoch = 42
+            current_epoch_settings,             //epoch - 1
+            next_epoch_settings,                //epoch + 0
+            signer_registration_epoch_settings, //epoch + 1
+            current_signers_with_stake,         //epoch - 1
+            next_signers_with_stake,            //epoch + 0
+            current_signers,                    //epoch - 1
+            next_signers,                       //epoch + 0
+            total_stakes_signers,               //epoch - 1
+            total_next_stakes_signers,          //epoch + 0
+            signed_entity_config,               //epoch - 1
             total_spo,
             total_stake,
         });