From 912eb5e8e97407c079c8727192fc278af8181a52 Mon Sep 17 00:00:00 2001
From: Rob Walker <rob@solana.com>
Date: Tue, 16 Oct 2018 15:26:44 -0700
Subject: [PATCH] remove bank.is_leader, dead code (#1516)

---
 src/bank.rs             | 20 --------------------
 src/fullnode.rs         |  2 +-
 src/leader_scheduler.rs |  2 +-
 src/write_stage.rs      |  6 +++---
 4 files changed, 5 insertions(+), 25 deletions(-)

diff --git a/src/bank.rs b/src/bank.rs
index bae752fd0d..5f9321be56 100644
--- a/src/bank.rs
+++ b/src/bank.rs
@@ -145,10 +145,6 @@ pub struct Bank {
     /// start of the ledger.
     transaction_count: AtomicUsize,
 
-    /// This bool allows us to submit metrics that are specific for leaders or validators
-    /// It is set to `true` by fullnode before creating the bank.
-    pub is_leader: bool,
-
     // The latest finality time for the network
     finality_time: AtomicUsize,
 
@@ -175,7 +171,6 @@ impl Default for Bank {
             account_locks: Mutex::new(HashSet::new()),
             last_ids_q: RwLock::new(LastIdsQ::default()),
             transaction_count: AtomicUsize::new(0),
-            is_leader: true,
             finality_time: AtomicUsize::new(std::usize::MAX),
             account_subscriptions: RwLock::new(HashMap::new()),
             signature_subscriptions: RwLock::new(HashMap::new()),
@@ -184,12 +179,6 @@ impl Default for Bank {
 }
 
 impl Bank {
-    /// Create a default Bank
-    pub fn new_default(is_leader: bool) -> Self {
-        let mut bank = Bank::default();
-        bank.is_leader = is_leader;
-        bank
-    }
     /// Create an Bank using a deposit.
     pub fn new_from_deposit(deposit: &Payment) -> Self {
         let bank = Self::default();
@@ -1759,15 +1748,6 @@ mod tests {
         assert_eq!(bank.get_balance(&mint.pubkey()), 1);
     }
 
-    #[test]
-    fn test_new_default() {
-        let def_bank = Bank::default();
-        assert!(def_bank.is_leader);
-        let leader_bank = Bank::new_default(true);
-        assert!(leader_bank.is_leader);
-        let validator_bank = Bank::new_default(false);
-        assert!(!validator_bank.is_leader);
-    }
     #[test]
     fn test_hash_internal_state() {
         let mint = Mint::new(2_000);
diff --git a/src/fullnode.rs b/src/fullnode.rs
index de604d110a..9cb5c438fd 100644
--- a/src/fullnode.rs
+++ b/src/fullnode.rs
@@ -553,7 +553,7 @@ impl Fullnode {
         ledger_path: &str,
         leader_scheduler: &mut LeaderScheduler,
     ) -> (Bank, u64, Vec<Entry>) {
-        let bank = Bank::new_default(false);
+        let bank = Bank::default();
         let entries = read_ledger(ledger_path, true).expect("opening ledger");
         let entries = entries
             .map(|e| e.unwrap_or_else(|err| panic!("failed to parse entry. error: {}", err)));
diff --git a/src/leader_scheduler.rs b/src/leader_scheduler.rs
index 605d857422..66d800e6c9 100644
--- a/src/leader_scheduler.rs
+++ b/src/leader_scheduler.rs
@@ -949,7 +949,7 @@ mod tests {
 
         // Check that the generate_schedule() function is being called by the
         // update_height() function at the correct entry heights.
-        let bank = Bank::new_default(false);
+        let bank = Bank::default();
         leader_scheduler.update_height(bootstrap_height - 1, &bank);
         assert_eq!(leader_scheduler.last_seed_height, None);
         leader_scheduler.update_height(bootstrap_height, &bank);
diff --git a/src/write_stage.rs b/src/write_stage.rs
index 5410de8190..e2e381d9d8 100644
--- a/src/write_stage.rs
+++ b/src/write_stage.rs
@@ -369,7 +369,7 @@ mod tests {
         let cluster_info = Arc::new(RwLock::new(
             ClusterInfo::new(leader_info.info).expect("ClusterInfo::new"),
         ));
-        let bank = Arc::new(Bank::new_default(true));
+        let bank = Arc::new(Bank::default());
 
         // Make a ledger
         let (_, leader_ledger_path) = genesis(test_name, 10_000);
@@ -516,7 +516,7 @@ mod tests {
         let my_id = my_keypair.pubkey();
 
         // Set up a dummy bank
-        let bank = Arc::new(Bank::new_default(true));
+        let bank = Arc::new(Bank::default());
         let accounts = bank.accounts();
         let dummy_id = Keypair::new().pubkey();
         let new_account = Account::new(1, 10, dummy_id.clone());
@@ -610,7 +610,7 @@ mod tests {
         let my_id = my_keypair.pubkey();
 
         // Set up a dummy bank
-        let bank = Arc::new(Bank::new_default(true));
+        let bank = Arc::new(Bank::default());
         let entry = Entry::new(&Hash::default(), 0, vec![]);
 
         // Note: An slot is the period of leader_rotation_interval entries