Add 'era_deprecate' macro

mithril-common/src/era/mod.rs

@@ -8,3 +8,9 @@ mod supported_era;
 pub use era_checker::EraChecker;
 pub use era_reader::*;
 pub use supported_era::*;
+
+/// Macro used to mark the code that should be cleaned up when the new era is activated
+#[macro_export]
+macro_rules! era_deprecate {
+    ( $comment:literal ) => {};
+}

mithril-common/src/lib.rs

@@ -18,6 +18,7 @@ pub mod crypto_helper;
 pub mod database;
 pub mod digesters;
 pub mod entities;
+#[macro_use]
 pub mod era;
 pub mod messages;
 pub mod signable_builder;

mithril-common/src/messages/register_signature.rs

@@ -2,6 +2,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::entities::{HexEncodedSingleSignature, LotteryIndex, PartyId, SignedEntityType};
 
+era_deprecate!("make signed_entity_type of RegisterSignatureMessage not optional");
 /// Message structure to register single signature.
 #[derive(Clone, Debug, PartialEq, Eq, Default, Serialize, Deserialize)]
 pub struct RegisterSignatureMessage {

mithril-common/src/messages/register_signer.rs

@@ -8,6 +8,7 @@ use crate::{
     },
 };
 
+era_deprecate!("make epoch of RegisterSignerMessage not optional");
 /// Register Signer Message
 #[derive(Clone, Debug, PartialEq, Eq, Default, Serialize, Deserialize)]
 pub struct RegisterSignerMessage {