Merge branch 'brent/pos-inflation-rewards' (#714)

* brent/pos-inflation-rewards:
  [ci] wasm checksums update
  changelog: add #714
  various import, comment and print clean-ups
  upgrade and refactor vp_token + related logic
  pos: update tests for validator sets updates
  pos: use the native token address as staking token
  core/ledger: fix `value` types in functions that update parameters storage
  fixes/upgrades for tests
  core/token/credit_tokens: handle overflows
  upgrade total token supply tracking and balance tracking at genesis
  pos misc: cargo files, debugging, test parameters
  tests for inflation
  apps/lib: configure genesis to set up any number of validators
  trigger 2-block countdown to new epoch for Tendermint
  log block rewards with accumulator LazyMaps and apply inflation with rewards products
  storage types and keys for inflation
  inflation and rewards modules
  shared/pos: re-use PoS address from address mod
  core: refactor gov address

.changelog/unreleased/features/714-pos-inflation-rewards.md

@@ -0,0 +1,6 @@
+- Infrastructure for PoS inflation and rewards. Includes inflation
+  using the PD controller mechanism and rewards based on validator block voting
+  behavior. Rewards are tracked and effectively distributed using the F1 fee
+  mechanism. In this PR, rewards are calculated and stored, but they are not
+  yet applied to voting powers or considered when unbonding and withdrawing.
+  ([#714](https://github.com/anoma/namada/pull/714))

apps/src/lib/client/tx.rs

@@ -2418,7 +2418,7 @@ pub async fn submit_unbond(ctx: Context, args: args::Unbond) {
     let data = pos::Unbond {
         validator: validator.clone(),
         amount: args.amount,
-        source,
+        source: Some(bond_source.clone()),
     };
     let data = data.try_to_vec().expect("Encoding tx data shouldn't fail");
 

apps/src/lib/config/genesis.rs

@@ -875,7 +875,7 @@ pub fn genesis(base_dir: impl AsRef<Path>, chain_id: &ChainId) -> Genesis {
     genesis_config::read_genesis_config(path)
 }
 #[cfg(feature = "dev")]
-pub fn genesis() -> Genesis {
+pub fn genesis(num_validators: u64) -> Genesis {
     use namada::types::address;
     use rust_decimal_macros::dec;
 
@@ -888,6 +888,9 @@ pub fn genesis() -> Genesis {
     // NOTE When the validator's key changes, tendermint must be reset with
     // `namada reset` command. To generate a new validator, use the
     // `tests::gen_genesis_validator` below.
+    let mut validators = Vec::<Validator>::new();
+
+    // Use hard-coded keys for the first validator to avoid breaking other code
     let consensus_keypair = wallet::defaults::validator_keypair();
     let account_keypair = wallet::defaults::validator_keypair();
     let address = wallet::defaults::validator_address();
@@ -908,6 +911,37 @@ pub fn genesis() -> Genesis {
         validator_vp_code_path: vp_user_path.into(),
         validator_vp_sha256: Default::default(),
     };
+    validators.push(validator);
+
+    // Add other validators with randomly generated keys if needed
+    for _ in 0..(num_validators - 1) {
+        let consensus_keypair: common::SecretKey =
+            testing::gen_keypair::<ed25519::SigScheme>()
+                .try_to_sk()
+                .unwrap();
+        let account_keypair = consensus_keypair.clone();
+        let address = address::gen_established_address("validator account");
+        let (protocol_keypair, dkg_keypair) =
+            wallet::defaults::validator_keys();
+        let validator = Validator {
+            pos_data: GenesisValidator {
+                address,
+                tokens: token::Amount::whole(200_000),
+                consensus_key: consensus_keypair.ref_to(),
+                commission_rate: dec!(0.05),
+                max_commission_rate_change: dec!(0.01),
+            },
+            account_key: account_keypair.ref_to(),
+            protocol_key: protocol_keypair.ref_to(),
+            dkg_public_key: dkg_keypair.public(),
+            non_staked_balance: token::Amount::whole(100_000),
+            // TODO replace with https://github.com/anoma/namada/issues/25)
+            validator_vp_code_path: vp_user_path.into(),
+            validator_vp_sha256: Default::default(),
+        };
+        validators.push(validator);
+    }
+
     let parameters = Parameters {
         epoch_duration: EpochDuration {
             min_num_of_blocks: 10,
@@ -960,7 +994,7 @@ pub fn genesis() -> Genesis {
     }];
     let default_user_tokens = token::Amount::whole(1_000_000);
     let default_key_tokens = token::Amount::whole(1_000);
-    let balances: HashMap<Address, token::Amount> = HashMap::from_iter([
+    let mut balances: HashMap<Address, token::Amount> = HashMap::from_iter([
         // established accounts' balances
         (wallet::defaults::albert_address(), default_user_tokens),
         (wallet::defaults::bertha_address(), default_user_tokens),
@@ -980,8 +1014,11 @@ pub fn genesis() -> Genesis {
             christel.public_key.as_ref().unwrap().into(),
             default_key_tokens,
         ),
-        ((&validator.account_key).into(), default_key_tokens),
     ]);
+    for validator in &validators {
+        balances.insert((&validator.account_key).into(), default_key_tokens);
+    }
+
     let token_accounts = address::tokens()
         .into_keys()
         .map(|address| TokenAccount {
@@ -993,7 +1030,7 @@ pub fn genesis() -> Genesis {
         .collect();
     Genesis {
         genesis_time: DateTimeUtc::now(),
-        validators: vec![validator],
+        validators,
         established_accounts: vec![albert, bertha, christel, masp],
         implicit_accounts,
         token_accounts,

apps/src/lib/node/ledger/mod.rs

@@ -90,7 +90,12 @@ impl Shell {
         match req {
             Request::InitChain(init) => {
                 tracing::debug!("Request InitChain");
-                self.init_chain(init).map(Response::InitChain)
+                self.init_chain(
+                    init,
+                    #[cfg(feature = "dev")]
+                    1,
+                )
+                .map(Response::InitChain)
             }
             Request::Info(_) => Ok(Response::Info(self.last_state())),
             Request::Query(query) => Ok(Response::Query(self.query(query))),
@@ -446,7 +451,7 @@ fn start_abci_broadcaster_shell(
     #[cfg(not(feature = "dev"))]
     let genesis = genesis::genesis(&config.shell.base_dir, &config.chain_id);
     #[cfg(feature = "dev")]
-    let genesis = genesis::genesis();
+    let genesis = genesis::genesis(1);
     let (shell, abci_service) = AbcippShim::new(
         config,
         wasm_dir,