From 3bc9789e8dd8852556ccf098f455b487b534b479 Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Thu, 30 Jan 2020 21:57:48 -0700
Subject: [PATCH] Remove support for 0.22.3 snapshots

---
 ledger/src/snapshot_utils.rs |   5 --
 runtime/src/bank.rs          | 116 -----------------------------------
 2 files changed, 121 deletions(-)

diff --git a/ledger/src/snapshot_utils.rs b/ledger/src/snapshot_utils.rs
index 3276c1d33a..9b38051b35 100644
--- a/ledger/src/snapshot_utils.rs
+++ b/ledger/src/snapshot_utils.rs
@@ -525,11 +525,6 @@ where
         |stream| {
             let mut bank: Bank = match snapshot_version {
                 env!("CARGO_PKG_VERSION") => deserialize_from_snapshot(stream.by_ref())?,
-                "0.22.3" => {
-                    let bank0223: solana_runtime::bank::LegacyBank0223 =
-                        deserialize_from_snapshot(stream.by_ref())?;
-                    bank0223.into()
-                }
                 _ => {
                     return Err(get_io_error(&format!(
                         "unsupported snapshot version: {}",
diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index 9b74fce242..e8da6e7144 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -2068,122 +2068,6 @@ where
         .deserialize_from(reader)
 }
 
-// The `bank` struct as defined in Solana v0.22.3
-#[derive(Default, Deserialize, Serialize)]
-pub struct LegacyBank0223 {
-    #[serde(skip)]
-    pub rc: BankRc,
-
-    #[serde(skip)]
-    pub src: StatusCacheRc,
-
-    pub blockhash_queue: RwLock<BlockhashQueue>,
-    pub ancestors: HashMap<Slot, usize>,
-    pub hash: RwLock<Hash>,
-    pub parent_hash: Hash,
-    pub parent_slot: Slot,
-
-    #[serde(serialize_with = "serialize_atomicu64")]
-    #[serde(deserialize_with = "deserialize_atomicu64")]
-    pub transaction_count: AtomicU64,
-
-    #[serde(serialize_with = "serialize_atomicu64")]
-    #[serde(deserialize_with = "deserialize_atomicu64")]
-    pub tick_height: AtomicU64,
-
-    #[serde(serialize_with = "serialize_atomicu64")]
-    #[serde(deserialize_with = "deserialize_atomicu64")]
-    pub signature_count: AtomicU64,
-
-    #[serde(serialize_with = "serialize_atomicu64")]
-    #[serde(deserialize_with = "deserialize_atomicu64")]
-    pub capitalization: AtomicU64,
-
-    pub max_tick_height: u64,
-    pub hashes_per_tick: Option<u64>,
-    pub ticks_per_slot: u64,
-    pub ns_per_slot: u128,
-    pub genesis_creation_time: UnixTimestamp,
-    pub slots_per_year: f64,
-    pub slots_per_segment: u64,
-    pub slot: Slot,
-    pub epoch: Epoch,
-    pub block_height: u64,
-    pub collector_id: Pubkey,
-
-    #[serde(serialize_with = "serialize_atomicu64")]
-    #[serde(deserialize_with = "deserialize_atomicu64")]
-    pub collector_fees: AtomicU64,
-
-    pub fee_calculator: FeeCalculator,
-
-    #[serde(serialize_with = "serialize_atomicu64")]
-    #[serde(deserialize_with = "deserialize_atomicu64")]
-    pub collected_rent: AtomicU64,
-
-    pub rent_collector: RentCollector,
-    pub epoch_schedule: EpochSchedule,
-    pub inflation: Arc<RwLock<Inflation>>,
-    pub stakes: RwLock<Stakes>,
-    pub storage_accounts: RwLock<StorageAccounts>,
-    pub epoch_stakes: HashMap<Epoch, Stakes>,
-
-    #[serde(serialize_with = "serialize_atomicbool")]
-    #[serde(deserialize_with = "deserialize_atomicbool")]
-    pub is_delta: AtomicBool,
-
-    pub message_processor: MessageProcessor,
-
-    #[serde(skip)]
-    pub entered_epoch_callback: Arc<RwLock<Option<EnteredEpochCallback>>>,
-
-    #[serde(skip)]
-    pub last_vote_sync: AtomicU64,
-}
-
-impl From<LegacyBank0223> for Bank {
-    fn from(bank: LegacyBank0223) -> Self {
-        Bank {
-            rc: bank.rc,
-            src: bank.src,
-            slot: bank.slot,
-            epoch: bank.epoch,
-            blockhash_queue: bank.blockhash_queue,
-            hashes_per_tick: bank.hashes_per_tick,
-            ticks_per_slot: bank.ticks_per_slot,
-            ns_per_slot: bank.ns_per_slot,
-            genesis_creation_time: bank.genesis_creation_time,
-            slots_per_segment: bank.slots_per_segment,
-            slots_per_year: bank.slots_per_year,
-            epoch_schedule: bank.epoch_schedule,
-            collected_rent: bank.collected_rent,
-            rent_collector: bank.rent_collector,
-            max_tick_height: bank.max_tick_height,
-            block_height: bank.block_height,
-            fee_calculator: bank.fee_calculator,
-            capitalization: bank.capitalization,
-            inflation: bank.inflation,
-            transaction_count: bank.transaction_count,
-            stakes: bank.stakes,
-            epoch_stakes: bank.epoch_stakes,
-            storage_accounts: bank.storage_accounts,
-            parent_hash: bank.parent_hash,
-            parent_slot: bank.parent_slot,
-            hard_forks: Arc::new(RwLock::new(HardForks::default())),
-            collector_id: bank.collector_id,
-            collector_fees: bank.collector_fees,
-            ancestors: bank.ancestors,
-            hash: bank.hash,
-            is_delta: bank.is_delta,
-            tick_height: bank.tick_height,
-            signature_count: bank.signature_count,
-            message_processor: bank.message_processor,
-            entered_epoch_callback: bank.entered_epoch_callback,
-            last_vote_sync: bank.last_vote_sync,
-        }
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;