remove epoch requirement

api/src/instruction.rs

@@ -13,6 +13,7 @@ pub enum OreInstruction {
 
     // Admin
     Initialize = 100,
+    Migrate = 101,
 }
 
 #[repr(C)]
@@ -47,6 +48,10 @@ pub struct Update {}
 #[derive(Clone, Copy, Debug, Pod, Zeroable)]
 pub struct Initialize {}
 
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Pod, Zeroable)]
+pub struct Migrate {}
+
 instruction!(OreInstruction, Claim);
 instruction!(OreInstruction, Close);
 instruction!(OreInstruction, Mine);
@@ -54,3 +59,4 @@ instruction!(OreInstruction, Open);
 instruction!(OreInstruction, Reset);
 instruction!(OreInstruction, Update);
 instruction!(OreInstruction, Initialize);
+instruction!(OreInstruction, Migrate);

api/src/state/bus.rs

@@ -0,0 +1,25 @@
+use steel::*;
+
+use super::OreAccount;
+
+/// Bus accounts are responsible for distributing mining rewards. There are 8 busses total
+/// to minimize write-lock contention and allow Solana to process mine instructions in parallel.
+#[repr(C)]
+#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
+pub struct Bus {
+    /// The ID of the bus account.
+    pub id: u64,
+
+    /// The remaining rewards this bus has left to payout in the current epoch.
+    pub rewards: u64,
+
+    /// The rewards this bus would have paid out in the current epoch if there no limit.
+    /// This is used to calculate the updated reward rate.
+    pub theoretical_rewards: u64,
+
+    /// The largest known stake balance seen by the bus this epoch.
+    #[deprecated(since = "2.8.0", note = "Top balance is no longer tracked or used")]
+    pub top_balance: u64,
+}
+
+account!(OreAccount, Bus);

api/src/state/config.rs

@@ -1,6 +1,6 @@
 use steel::*;
 
-use super::OreAccount;
+use super::{OldOreAccount, OreAccount};
 
 /// Config is a singleton account which manages program global variables.
 #[repr(C)]
@@ -22,4 +22,22 @@ pub struct Config {
     pub block_reward: u64,
 }
 
+/// Config is a singleton account which manages program global variables.
+#[repr(C)]
+#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
+pub struct OldConfig {
+    /// The base reward rate paid out for a hash of minimum difficulty.
+    pub base_reward_rate: u64,
+
+    /// The timestamp of the last reset.
+    pub last_reset_at: i64,
+
+    /// The minimum accepted difficulty.
+    pub min_difficulty: u64,
+
+    /// The target emissions rate in ORE/min.
+    pub target_emmissions_rate: u64,
+}
+
 account!(OreAccount, Config);
+account!(OldOreAccount, OldConfig);

api/src/state/mod.rs

@@ -1,7 +1,9 @@
+mod bus;
 mod config;
 mod proof;
 mod treasury;
 
+pub use bus::*;
 pub use config::*;
 pub use proof::*;
 pub use treasury::*;
@@ -13,6 +15,7 @@ use crate::consts::*;
 #[repr(u8)]
 #[derive(Clone, Copy, Debug, Eq, PartialEq, IntoPrimitive, TryFromPrimitive)]
 pub enum OreAccount {
+    Bus = 100,
     Config = 101,
     Proof = 102,
     Treasury = 103,
@@ -32,3 +35,9 @@ pub fn proof_pda(authority: Pubkey) -> (Pubkey, u8) {
 pub fn treasury_pda() -> (Pubkey, u8) {
     Pubkey::find_program_address(&[TREASURY], &crate::id())
 }
+
+#[repr(u8)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, IntoPrimitive, TryFromPrimitive)]
+pub enum OldOreAccount {
+    OldConfig = 101,
+}