miner migration

program/src/lib.rs

@@ -2,6 +2,7 @@ mod claim;
 mod close;
 mod initialize;
 mod log;
+mod migrate_miner_account;
 mod mine;
 mod open;
 mod reset;
@@ -17,6 +18,7 @@ use claim::*;
 use close::*;
 use initialize::*;
 use log::*;
+use migrate_miner_account::*;
 use mine::*;
 use open::*;
 use reset::*;
@@ -54,6 +56,9 @@ pub fn process_instruction(
         OreInstruction::SetFeeCollector => process_set_fee_collector(accounts, data)?,
         OreInstruction::SetFeeRate => process_set_fee_rate(accounts, data)?,
         OreInstruction::SetSniperFeeDuration => process_set_sniper_fee_duration(accounts, data)?,
+
+        // Migration
+        OreInstruction::MigrateMinerAccount => process_migrate_miner_account(accounts, data)?,
     }
 
     Ok(())

program/src/migrate_miner_account.rs

@@ -0,0 +1,42 @@
+use std::mem::size_of;
+
+use ore_api::prelude::*;
+use solana_program::log::sol_log;
+use steel::*;
+
+/// Migrates a miner account from the old format to the new format.
+pub fn process_migrate_miner_account(accounts: &[AccountInfo<'_>], _data: &[u8]) -> ProgramResult {
+    // Load accounts.
+    let [signer_info, config_info, miner_info, system_program] = accounts else {
+        return Err(ProgramError::NotEnoughAccountKeys);
+    };
+    signer_info.is_signer()?;
+    config_info
+        .as_account_mut::<Config>(&ore_api::ID)?
+        .assert_mut(|c| c.admin == *signer_info.key)?;
+    let miner = miner_info.as_account_mut::<MinerOLD>(&ore_api::ID)?;
+    system_program.is_program(&system_program::ID)?;
+
+    // Copy old data.
+    let authority = miner.authority;
+    let block_id = miner.block_id;
+    let hashpower = miner.hashpower;
+    let seed = miner.seed;
+    let total_hashpower = miner.total_hashpower;
+    let total_rewards = miner.total_rewards;
+
+    // Reallocate new account.
+    miner_info.realloc(8 + size_of::<Miner>(), false)?;
+
+    // Copy new data.
+    let miner = miner_info.as_account_mut::<Miner>(&ore_api::ID)?;
+    miner.authority = authority;
+    miner.block_id = block_id;
+    miner.executor = Pubkey::default();
+    miner.hashpower = hashpower;
+    miner.seed = seed;
+    miner.total_hashpower = total_hashpower;
+    miner.total_rewards = total_rewards;
+
+    Ok(())
+}