Implement storage contract logic

programs/native/storage/src/lib.rs

@@ -3,12 +3,27 @@
 //!  and give reward for good proofs.
 
 use log::*;
+extern crate solana_sdk;
+
 use solana_sdk::account::KeyedAccount;
 use solana_sdk::native_program::ProgramError;
 use solana_sdk::pubkey::Pubkey;
 use solana_sdk::solana_entrypoint;
 use solana_sdk::storage_program::*;
 
+pub const TOTAL_VALIDATOR_REWARDS: u64 = 1000;
+pub const TOTAL_REPLICATOR_REWARDS: u64 = 1000;
+
+fn count_valid_proofs(proofs: &[ProofStatus]) -> u64 {
+    let mut num = 0;
+    for proof in proofs {
+        if let ProofStatus::Valid = proof {
+            num += 1;
+        }
+    }
+    num
+}
+
 solana_entrypoint!(entrypoint);
 fn entrypoint(
     _program_id: &Pubkey,
@@ -18,25 +33,149 @@ fn entrypoint(
 ) -> Result<(), ProgramError> {
     solana_logger::setup();
 
+    if keyed_accounts.len() != 2 {
+        // keyed_accounts[1] should be the main storage key
+        // to access its userdata
+        Err(ProgramError::InvalidArgument)?;
+    }
+
     // accounts_keys[0] must be signed
     if keyed_accounts[0].signer_key().is_none() {
         info!("account[0] is unsigned");
+        Err(ProgramError::GenericError)?;
+    }
+
+    if *keyed_accounts[1].unsigned_key() != system_id() {
+        info!(
+            "invalid account id owner: {:?} system_id: {:?}",
+            keyed_accounts[1].unsigned_key(),
+            system_id()
+        );
         Err(ProgramError::InvalidArgument)?;
     }
 
     if let Ok(syscall) = bincode::deserialize(data) {
+        let mut storage_account_state = if let Ok(storage_account_state) =
+            bincode::deserialize(&keyed_accounts[1].account.userdata)
+        {
+            storage_account_state
+        } else {
+            StorageProgramState::default()
+        };
+
+        debug!(
+            "deserialized state height: {}",
+            storage_account_state.entry_height
+        );
         match syscall {
             StorageProgram::SubmitMiningProof {
                 sha_state,
                 entry_height,
-                ..
+                signature,
             } => {
-                info!(
+                let segment_index = get_segment_from_entry(entry_height);
+                let current_segment_index =
+                    get_segment_from_entry(storage_account_state.entry_height);
+                if segment_index >= current_segment_index {
+                    return Err(ProgramError::InvalidArgument);
+                }
+
+                debug!(
                     "Mining proof submitted with state {:?} entry_height: {}",
                     sha_state, entry_height
                 );
+
+                let proof_info = ProofInfo {
+                    id: *keyed_accounts[0].signer_key().unwrap(),
+                    sha_state,
+                    signature,
+                };
+                storage_account_state.proofs[segment_index].push(proof_info);
+            }
+            StorageProgram::AdvertiseStorageLastId { id, entry_height } => {
+                let original_segments = storage_account_state.entry_height / ENTRIES_PER_SEGMENT;
+                let segments = entry_height / ENTRIES_PER_SEGMENT;
+                debug!(
+                    "advertise new last id segments: {} orig: {}",
+                    segments, original_segments
+                );
+                if segments <= original_segments {
+                    return Err(ProgramError::InvalidArgument);
+                }
+
+                storage_account_state.entry_height = entry_height;
+                storage_account_state.id = id;
+
+                // move the proofs to previous_proofs
+                storage_account_state.previous_proofs = storage_account_state.proofs.clone();
+                storage_account_state.proofs.clear();
+                storage_account_state
+                    .proofs
+                    .resize(segments as usize, Vec::new());
+
+                // move lockout_validations to reward_validations
+                storage_account_state.reward_validations =
+                    storage_account_state.lockout_validations.clone();
+                storage_account_state.lockout_validations.clear();
+                storage_account_state
+                    .lockout_validations
+                    .resize(segments as usize, Vec::new());
+            }
+            StorageProgram::ProofValidation {
+                entry_height,
+                proof_mask,
+            } => {
+                if entry_height >= storage_account_state.entry_height {
+                    return Err(ProgramError::InvalidArgument);
+                }
+
+                let segment_index = get_segment_from_entry(entry_height);
+                if storage_account_state.previous_proofs[segment_index].len() != proof_mask.len() {
+                    return Err(ProgramError::InvalidArgument);
+                }
+
+                // TODO: Check that each proof mask matches the signature
+                /*for (i, entry) in proof_mask.iter().enumerate() {
+                    if storage_account_state.previous_proofs[segment_index][i] != signature.as_ref[0] {
+                        return Err(ProgramError::InvalidArgument);
+                    }
+                }*/
+
+                let info = ValidationInfo {
+                    id: *keyed_accounts[0].signer_key().unwrap(),
+                    proof_mask,
+                };
+                storage_account_state.lockout_validations[segment_index].push(info);
+            }
+            StorageProgram::ClaimStorageReward { entry_height } => {
+                let claims_index = get_segment_from_entry(entry_height);
+                let account_key = keyed_accounts[0].signer_key().unwrap();
+                let mut num_validations = 0;
+                let mut total_validations = 0;
+                for validation in &storage_account_state.reward_validations[claims_index] {
+                    if *account_key == validation.id {
+                        num_validations += count_valid_proofs(&validation.proof_mask);
+                    } else {
+                        total_validations += count_valid_proofs(&validation.proof_mask);
+                    }
+                }
+                total_validations += num_validations;
+                if total_validations > 0 {
+                    keyed_accounts[0].account.tokens +=
+                        (TOTAL_VALIDATOR_REWARDS * num_validations) / total_validations;
+                }
             }
         }
+
+        if bincode::serialize_into(
+            &mut keyed_accounts[1].account.userdata[..],
+            &storage_account_state,
+        )
+        .is_err()
+        {
+            return Err(ProgramError::UserdataTooSmall);
+        }
+
         Ok(())
     } else {
         info!("Invalid instruction userdata: {:?}", data);
@@ -47,8 +186,42 @@ fn entrypoint(
 #[cfg(test)]
 mod test {
     use super::*;
-    use solana_sdk::account::create_keyed_accounts;
-    use solana_sdk::signature::{Keypair, KeypairUtil};
+    use solana_sdk::account::{create_keyed_accounts, Account};
+    use solana_sdk::hash::Hash;
+    use solana_sdk::signature::{Keypair, KeypairUtil, Signature};
+    use solana_sdk::storage_program;
+    use solana_sdk::storage_program::ProofStatus;
+    use solana_sdk::storage_program::StorageTransaction;
+    use solana_sdk::transaction::{Instruction, Transaction};
+
+    fn test_transaction(
+        tx: &Transaction,
+        program_accounts: &mut [Account],
+    ) -> Result<(), ProgramError> {
+        assert_eq!(tx.instructions.len(), 1);
+        let Instruction {
+            ref accounts,
+            ref userdata,
+            ..
+        } = tx.instructions[0];
+
+        info!("accounts: {:?}", accounts);
+
+        let mut keyed_accounts: Vec<_> = accounts
+            .iter()
+            .map(|&index| {
+                let index = index as usize;
+                let key = &tx.account_keys[index];
+                (key, index < tx.signatures.len())
+            })
+            .zip(program_accounts.iter_mut())
+            .map(|((key, is_signer), account)| KeyedAccount::new(key, is_signer, account))
+            .collect();
+
+        let ret = entrypoint(&id(), &mut keyed_accounts, &userdata, 42);
+        info!("ret: {:?}", ret);
+        ret
+    }
 
     #[test]
     fn test_storage_tx() {
@@ -57,4 +230,150 @@ mod test {
         let mut keyed_accounts = create_keyed_accounts(&mut accounts);
         assert!(entrypoint(&id(), &mut keyed_accounts, &[], 42).is_err());
     }
+
+    #[test]
+    fn test_serialize_overflow() {
+        let keypair = Keypair::new();
+        let mut keyed_accounts = Vec::new();
+        let mut user_account = Account::default();
+        let mut system_account = Account::default();
+        let pubkey = keypair.pubkey();
+        let system_key = storage_program::system_id();
+        keyed_accounts.push(KeyedAccount::new(&pubkey, true, &mut user_account));
+        keyed_accounts.push(KeyedAccount::new(&system_key, false, &mut system_account));
+
+        let tx = Transaction::storage_new_advertise_last_id(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            ENTRIES_PER_SEGMENT,
+        );
+
+        assert_eq!(
+            entrypoint(&id(), &mut keyed_accounts, &tx.instructions[0].userdata, 42),
+            Err(ProgramError::UserdataTooSmall)
+        );
+    }
+
+    #[test]
+    fn test_invalid_accounts_len() {
+        let keypair = Keypair::new();
+        let mut accounts = [Default::default()];
+
+        let tx = Transaction::storage_new_mining_proof(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            0,
+            Signature::default(),
+        );
+        assert!(test_transaction(&tx, &mut accounts).is_err());
+
+        let mut accounts = [Default::default(), Default::default(), Default::default()];
+
+        assert!(test_transaction(&tx, &mut accounts).is_err());
+    }
+
+    #[test]
+    fn test_submit_mining_invalid_entry_height() {
+        solana_logger::setup();
+        let keypair = Keypair::new();
+        let mut accounts = [Account::default(), Account::default()];
+        accounts[1].userdata.resize(16 * 1024, 0);
+
+        let tx = Transaction::storage_new_mining_proof(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            0,
+            Signature::default(),
+        );
+
+        // Haven't seen a transaction to roll over the epoch, so this should fail
+        assert!(test_transaction(&tx, &mut accounts).is_err());
+    }
+
+    #[test]
+    fn test_submit_mining_ok() {
+        solana_logger::setup();
+        let keypair = Keypair::new();
+        let mut accounts = [Account::default(), Account::default()];
+        accounts[1].userdata.resize(16 * 1024, 0);
+
+        let tx = Transaction::storage_new_advertise_last_id(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            ENTRIES_PER_SEGMENT,
+        );
+
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        let tx = Transaction::storage_new_mining_proof(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            0,
+            Signature::default(),
+        );
+
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+    }
+
+    #[test]
+    fn test_validate_mining() {
+        solana_logger::setup();
+        let keypair = Keypair::new();
+        let mut accounts = [Account::default(), Account::default()];
+        accounts[1].userdata.resize(16 * 1024, 0);
+
+        let entry_height = 0;
+
+        let tx = Transaction::storage_new_advertise_last_id(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            ENTRIES_PER_SEGMENT,
+        );
+
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        let tx = Transaction::storage_new_mining_proof(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            entry_height,
+            Signature::default(),
+        );
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        let tx = Transaction::storage_new_advertise_last_id(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            ENTRIES_PER_SEGMENT * 2,
+        );
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        let tx = Transaction::storage_new_proof_validation(
+            &keypair,
+            Hash::default(),
+            entry_height,
+            vec![ProofStatus::Valid],
+        );
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        let tx = Transaction::storage_new_advertise_last_id(
+            &keypair,
+            Hash::default(),
+            Hash::default(),
+            ENTRIES_PER_SEGMENT * 3,
+        );
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        let tx = Transaction::storage_new_reward_claim(&keypair, Hash::default(), entry_height);
+        assert!(test_transaction(&tx, &mut accounts).is_ok());
+
+        assert!(accounts[0].tokens == TOTAL_VALIDATOR_REWARDS);
+    }
 }

sdk/src/storage_program.rs

@@ -1,8 +1,46 @@
 use crate::hash::Hash;
 use crate::pubkey::Pubkey;
-use crate::signature::{Keypair, KeypairUtil, Signature};
+use crate::signature::{Keypair, Signature};
 use crate::transaction::Transaction;
 
+pub const ENTRIES_PER_SEGMENT: u64 = 16;
+
+pub fn get_segment_from_entry(entry_height: u64) -> usize {
+    (entry_height / ENTRIES_PER_SEGMENT) as usize
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub enum ProofStatus {
+    Valid,
+    NotValid,
+    Skipped,
+}
+
+#[derive(Default, Debug, Serialize, Deserialize, Clone)]
+pub struct ProofInfo {
+    pub id: Pubkey,
+    pub signature: Signature,
+    pub sha_state: Hash,
+}
+
+#[derive(Default, Debug, Serialize, Deserialize, Clone)]
+pub struct ValidationInfo {
+    pub id: Pubkey,
+    pub proof_mask: Vec<ProofStatus>,
+}
+
+#[derive(Default, Debug, Serialize, Deserialize)]
+pub struct StorageProgramState {
+    pub entry_height: u64,
+    pub id: Hash,
+
+    pub proofs: Vec<Vec<ProofInfo>>,
+    pub previous_proofs: Vec<Vec<ProofInfo>>,
+
+    pub lockout_validations: Vec<Vec<ValidationInfo>>,
+    pub reward_validations: Vec<Vec<ValidationInfo>>,
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum StorageProgram {
     SubmitMiningProof {
@@ -10,6 +48,17 @@ pub enum StorageProgram {
         entry_height: u64,
         signature: Signature,
     },
+    AdvertiseStorageLastId {
+        id: Hash,
+        entry_height: u64,
+    },
+    ClaimStorageReward {
+        entry_height: u64,
+    },
+    ProofValidation {
+        entry_height: u64,
+        proof_mask: Vec<ProofStatus>,
+    },
 }
 
 pub const STORAGE_PROGRAM_ID: [u8; 32] = [
@@ -17,6 +66,11 @@ pub const STORAGE_PROGRAM_ID: [u8; 32] = [
     0,
 ];
 
+pub const STORAGE_SYSTEM_ACCOUNT_ID: [u8; 32] = [
+    133, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0,
+];
+
 pub fn check_id(program_id: &Pubkey) -> bool {
     program_id.as_ref() == STORAGE_PROGRAM_ID
 }
@@ -25,6 +79,10 @@ pub fn id() -> Pubkey {
     Pubkey::new(&STORAGE_PROGRAM_ID)
 }
 
+pub fn system_id() -> Pubkey {
+    Pubkey::new(&STORAGE_SYSTEM_ACCOUNT_ID)
+}
+
 pub trait StorageTransaction {
     fn storage_new_mining_proof(
         from_keypair: &Keypair,
@@ -33,6 +91,22 @@ pub trait StorageTransaction {
         entry_height: u64,
         signature: Signature,
     ) -> Self;
+
+    fn storage_new_advertise_last_id(
+        from_keypair: &Keypair,
+        storage_last_id: Hash,
+        last_id: Hash,
+        entry_height: u64,
+    ) -> Self;
+
+    fn storage_new_proof_validation(
+        from_keypair: &Keypair,
+        last_id: Hash,
+        entry_height: u64,
+        proof_mask: Vec<ProofStatus>,
+    ) -> Self;
+
+    fn storage_new_reward_claim(from_keypair: &Keypair, last_id: Hash, entry_height: u64) -> Self;
 }
 
 impl StorageTransaction for Transaction {
@@ -50,7 +124,59 @@ impl StorageTransaction for Transaction {
         };
         Transaction::new(
             from_keypair,
-            &[from_keypair.pubkey()],
+            &[Pubkey::new(&STORAGE_SYSTEM_ACCOUNT_ID)],
+            id(),
+            &program,
+            last_id,
+            0,
+        )
+    }
+
+    fn storage_new_advertise_last_id(
+        from_keypair: &Keypair,
+        storage_id: Hash,
+        last_id: Hash,
+        entry_height: u64,
+    ) -> Self {
+        let program = StorageProgram::AdvertiseStorageLastId {
+            id: storage_id,
+            entry_height,
+        };
+        Transaction::new(
+            from_keypair,
+            &[Pubkey::new(&STORAGE_SYSTEM_ACCOUNT_ID)],
+            id(),
+            &program,
+            last_id,
+            0,
+        )
+    }
+
+    fn storage_new_proof_validation(
+        from_keypair: &Keypair,
+        last_id: Hash,
+        entry_height: u64,
+        proof_mask: Vec<ProofStatus>,
+    ) -> Self {
+        let program = StorageProgram::ProofValidation {
+            entry_height,
+            proof_mask,
+        };
+        Transaction::new(
+            from_keypair,
+            &[Pubkey::new(&STORAGE_SYSTEM_ACCOUNT_ID)],
+            id(),
+            &program,
+            last_id,
+            0,
+        )
+    }
+
+    fn storage_new_reward_claim(from_keypair: &Keypair, last_id: Hash, entry_height: u64) -> Self {
+        let program = StorageProgram::ClaimStorageReward { entry_height };
+        Transaction::new(
+            from_keypair,
+            &[Pubkey::new(&STORAGE_SYSTEM_ACCOUNT_ID)],
             id(),
             &program,
             last_id,

src/bank.rs

@@ -234,6 +234,16 @@ impl Bank {
         self.accounts
             .store_slow(&storage_program::id(), &storage_program_account);
 
+        let storage_system_account = Account {
+            tokens: 1,
+            owner: storage_program::system_id(),
+            userdata: vec![0; 16 * 1024],
+            executable: false,
+            loader: Pubkey::default(),
+        };
+        self.accounts
+            .store_slow(&storage_program::system_id(), &storage_system_account);
+
         // Bpf Loader
         let bpf_loader_account = Account {
             tokens: 1,
@@ -284,6 +294,33 @@ impl Bank {
             .get_pubkeys_for_entry_height(entry_height)
     }
 
+    pub fn get_storage_entry_height(&self) -> u64 {
+        match self.get_account(&storage_program::system_id()) {
+            Some(storage_system_account) => {
+                let state = deserialize(&storage_system_account.userdata);
+                if let Ok(state) = state {
+                    let state: storage_program::StorageProgramState = state;
+                    return state.entry_height;
+                }
+            }
+            None => {
+                info!("error in reading entry_height");
+            }
+        }
+        0
+    }
+
+    pub fn get_storage_last_id(&self) -> Hash {
+        if let Some(storage_system_account) = self.get_account(&storage_program::system_id()) {
+            let state = deserialize(&storage_system_account.userdata);
+            if let Ok(state) = state {
+                let state: storage_program::StorageProgramState = state;
+                return state.id;
+            }
+        }
+        Hash::default()
+    }
+
     /// Forget all signatures. Useful for benchmarking.
     pub fn clear_signatures(&self) {
         self.last_ids.write().unwrap().clear_signatures();
@@ -964,6 +1001,7 @@ mod tests {
     use solana_sdk::native_program::ProgramError;
     use solana_sdk::signature::Keypair;
     use solana_sdk::signature::KeypairUtil;
+    use solana_sdk::storage_program::{StorageTransaction, ENTRIES_PER_SEGMENT};
     use solana_sdk::system_transaction::SystemTransaction;
     use solana_sdk::transaction::Instruction;
     use std;
@@ -1699,6 +1737,10 @@ mod tests {
             132, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
             0, 0, 0, 0,
         ]);
+        let storage_system = Pubkey::new(&[
+            133, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+            0, 0, 0, 0,
+        ]);
 
         assert_eq!(system_program::id(), system);
         assert_eq!(solana_native_loader::id(), native);
@@ -1707,6 +1749,7 @@ mod tests {
         assert_eq!(storage_program::id(), storage);
         assert_eq!(token_program::id(), token);
         assert_eq!(vote_program::id(), vote);
+        assert_eq!(storage_program::system_id(), storage_system);
     }
 
     #[test]
@@ -1720,6 +1763,7 @@ mod tests {
             storage_program::id(),
             token_program::id(),
             vote_program::id(),
+            storage_program::system_id(),
         ];
         assert!(ids.into_iter().all(move |id| unique.insert(id)));
     }
@@ -1930,4 +1974,55 @@ mod tests {
         let entries = entry_receiver.recv().unwrap();
         assert_eq!(entries[0].transactions.len(), transactions.len() - 1);
     }
+
+    #[test]
+    fn test_bank_storage() {
+        solana_logger::setup();
+        let alice = Mint::new(1000);
+        let bank = Bank::new(&alice);
+
+        let bob = Keypair::new();
+        let jack = Keypair::new();
+        let jill = Keypair::new();
+
+        let x = 42;
+        let last_id = hash(&[x]);
+        let x2 = x * 2;
+        let storage_last_id = hash(&[x2]);
+
+        bank.register_tick(&last_id);
+
+        bank.transfer(10, &alice.keypair(), jill.pubkey(), last_id)
+            .unwrap();
+
+        bank.transfer(10, &alice.keypair(), bob.pubkey(), last_id)
+            .unwrap();
+        bank.transfer(10, &alice.keypair(), jack.pubkey(), last_id)
+            .unwrap();
+
+        let tx = Transaction::storage_new_advertise_last_id(
+            &bob,
+            storage_last_id,
+            last_id,
+            ENTRIES_PER_SEGMENT,
+        );
+
+        assert!(bank.process_transaction(&tx).is_ok());
+
+        let entry_height = 0;
+
+        let tx = Transaction::storage_new_mining_proof(
+            &jack,
+            Hash::default(),
+            last_id,
+            entry_height,
+            Signature::default(),
+        );
+
+        assert!(bank.process_transaction(&tx).is_ok());
+
+        assert_eq!(bank.get_storage_entry_height(), ENTRIES_PER_SEGMENT);
+        assert_eq!(bank.get_storage_last_id(), storage_last_id);
+        assert_eq!(bank.get_pubkeys_for_entry_height(0), vec![]);
+    }
 }

src/storage_stage.rs

@@ -4,6 +4,8 @@
 
 #[cfg(all(feature = "chacha", feature = "cuda"))]
 use crate::chacha_cuda::chacha_cbc_encrypt_file_many_keys;
+use crate::client::mk_client;
+use crate::cluster_info::ClusterInfo;
 use crate::db_ledger::DbLedger;
 use crate::entry::EntryReceiver;
 use crate::result::{Error, Result};
@@ -17,12 +19,17 @@ use solana_sdk::signature::Keypair;
 use solana_sdk::signature::Signature;
 use solana_sdk::storage_program;
 use solana_sdk::storage_program::StorageProgram;
+use solana_sdk::storage_program::StorageTransaction;
+use solana_sdk::transaction::Transaction;
 use solana_sdk::vote_program;
 use std::collections::HashSet;
+use std::io;
 use std::mem::size_of;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::mpsc::RecvTimeoutError;
+use std::sync::mpsc::{channel, Sender};
 use std::sync::{Arc, RwLock};
+use std::thread::sleep;
 use std::thread::{self, Builder, JoinHandle};
 use std::time::Duration;
 
@@ -48,6 +55,7 @@ pub struct StorageState {
 
 pub struct StorageStage {
     t_storage_mining_verifier: JoinHandle<()>,
+    t_storage_create_accounts: JoinHandle<()>,
 }
 
 macro_rules! cross_boundary {
@@ -63,6 +71,8 @@ pub const NUM_STORAGE_SAMPLES: usize = 4;
 pub const ENTRIES_PER_SEGMENT: u64 = 16;
 const KEY_SIZE: usize = 64;
 
+type TransactionSender = Sender<Transaction>;
+
 pub fn get_segment_from_entry(entry_height: u64) -> u64 {
     entry_height / ENTRIES_PER_SEGMENT
 }
@@ -136,25 +146,30 @@ impl StorageStage {
         storage_state: &StorageState,
         storage_entry_receiver: EntryReceiver,
         db_ledger: Option<Arc<DbLedger>>,
-        keypair: Arc<Keypair>,
-        exit: Arc<AtomicBool>,
+        keypair: &Arc<Keypair>,
+        exit: &Arc<AtomicBool>,
         entry_height: u64,
         storage_rotate_count: u64,
+        cluster_info: &Arc<RwLock<ClusterInfo>>,
     ) -> Self {
         debug!("storage_stage::new: entry_height: {}", entry_height);
         storage_state.state.write().unwrap().entry_height = entry_height;
         let storage_state_inner = storage_state.state.clone();
+        let exit0 = exit.clone();
+        let keypair0 = keypair.clone();
+
+        let (tx_sender, tx_receiver) = channel();
+
         let t_storage_mining_verifier = Builder::new()
             .name("solana-storage-mining-verify-stage".to_string())
             .spawn(move || {
-                let exit = exit.clone();
                 let mut poh_height = 0;
                 let mut current_key = 0;
                 let mut entry_height = entry_height;
                 loop {
                     if let Some(ref some_db_ledger) = db_ledger {
                         if let Err(e) = Self::process_entries(
-                            &keypair,
+                            &keypair0,
                             &storage_state_inner,
                             &storage_entry_receiver,
                             &some_db_ledger,
@@ -162,6 +177,7 @@ impl StorageStage {
                             &mut entry_height,
                             &mut current_key,
                             storage_rotate_count,
+                            &tx_sender,
                         ) {
                             match e {
                                 Error::RecvTimeoutError(RecvTimeoutError::Disconnected) => break,
@@ -170,28 +186,105 @@ impl StorageStage {
                             }
                         }
                     }
-                    if exit.load(Ordering::Relaxed) {
+                    if exit0.load(Ordering::Relaxed) {
                         break;
                     }
                 }
             })
             .unwrap();
 
+        let cluster_info0 = cluster_info.clone();
+        let exit1 = exit.clone();
+        let keypair1 = keypair.clone();
+        let t_storage_create_accounts = Builder::new()
+            .name("solana-storage-create-accounts".to_string())
+            .spawn(move || loop {
+                match tx_receiver.recv_timeout(Duration::from_secs(1)) {
+                    Ok(mut tx) => {
+                        if Self::send_tx(&cluster_info0, &mut tx, &exit1, &keypair1, None).is_ok() {
+                            debug!("sent tx: {:?}", tx);
+                        }
+                    }
+                    Err(e) => match e {
+                        RecvTimeoutError::Disconnected => break,
+                        RecvTimeoutError::Timeout => (),
+                    },
+                };
+
+                if exit1.load(Ordering::Relaxed) {
+                    break;
+                }
+                sleep(Duration::from_millis(100));
+            })
+            .unwrap();
+
         StorageStage {
             t_storage_mining_verifier,
+            t_storage_create_accounts,
         }
     }
 
+    fn send_tx(
+        cluster_info: &Arc<RwLock<ClusterInfo>>,
+        tx: &mut Transaction,
+        exit: &Arc<AtomicBool>,
+        keypair: &Arc<Keypair>,
+        account_to_create: Option<Pubkey>,
+    ) -> io::Result<()> {
+        if let Some(leader_info) = cluster_info.read().unwrap().leader_data() {
+            let mut client = mk_client(leader_info);
+
+            if let Some(account) = account_to_create {
+                if client.get_account_userdata(&account).is_ok() {
+                    return Ok(());
+                }
+            }
+
+            let last_id = client.get_last_id();
+
+            tx.sign(&[&keypair], last_id);
+
+            if exit.load(Ordering::Relaxed) {
+                Err(io::Error::new(io::ErrorKind::Other, "exit signaled"))?;
+            }
+
+            if let Ok(signature) = client.transfer_signed(&tx) {
+                for _ in 0..10 {
+                    if client.check_signature(&signature) {
+                        return Ok(());
+                    }
+
+                    if exit.load(Ordering::Relaxed) {
+                        Err(io::Error::new(io::ErrorKind::Other, "exit signaled"))?;
+                    }
+
+                    sleep(Duration::from_millis(200));
+                }
+            }
+        }
+
+        Err(io::Error::new(io::ErrorKind::Other, "leader not found"))
+    }
+
     pub fn process_entry_crossing(
         state: &Arc<RwLock<StorageStateInner>>,
         keypair: &Arc<Keypair>,
         _db_ledger: &Arc<DbLedger>,
         entry_id: Hash,
         entry_height: u64,
+        tx_sender: &TransactionSender,
     ) -> Result<()> {
         let mut seed = [0u8; 32];
         let signature = keypair.sign(&entry_id.as_ref());
 
+        let tx = Transaction::storage_new_advertise_last_id(
+            keypair,
+            entry_id,
+            Hash::default(),
+            entry_height,
+        );
+        tx_sender.send(tx)?;
+
         seed.copy_from_slice(&signature.as_ref()[..32]);
 
         let mut rng = ChaChaRng::from_seed(seed);
@@ -259,6 +352,7 @@ impl StorageStage {
         entry_height: &mut u64,
         current_key_idx: &mut usize,
         storage_rotate_count: u64,
+        tx_sender: &TransactionSender,
     ) -> Result<()> {
         let timeout = Duration::new(1, 0);
         let entries = entry_receiver.recv_timeout(timeout)?;
@@ -302,6 +396,7 @@ impl StorageStage {
                                 }
                                 debug!("storage proof: entry_height: {}", entry_height);
                             }
+                            Ok(_) => {}
                             Err(e) => {
                                 info!("error: {:?}", e);
                             }
@@ -320,6 +415,7 @@ impl StorageStage {
                     &db_ledger,
                     entry.id,
                     *entry_height,
+                    tx_sender,
                 )?;
             }
             *entry_height += 1;
@@ -333,6 +429,7 @@ impl Service for StorageStage {
     type JoinReturnType = ();
 
     fn join(self) -> thread::Result<()> {
+        self.t_storage_create_accounts.join().unwrap();
         self.t_storage_mining_verifier.join()
     }
 }
@@ -343,6 +440,7 @@ mod tests {
     use crate::db_ledger::{DbLedger, DEFAULT_SLOT_HEIGHT};
     use crate::entry::{make_tiny_test_entries, Entry};
 
+    use crate::cluster_info::{ClusterInfo, NodeInfo};
     use crate::service::Service;
     use crate::storage_stage::StorageState;
     use crate::storage_stage::NUM_IDENTITIES;
@@ -352,6 +450,7 @@ mod tests {
     use rayon::prelude::*;
     use solana_sdk::hash::Hash;
     use solana_sdk::hash::Hasher;
+    use solana_sdk::pubkey::Pubkey;
     use solana_sdk::signature::{Keypair, KeypairUtil, Signature};
     use solana_sdk::transaction::Transaction;
     use solana_sdk::vote_program::Vote;
@@ -360,7 +459,7 @@ mod tests {
     use std::fs::remove_dir_all;
     use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
     use std::sync::mpsc::channel;
-    use std::sync::Arc;
+    use std::sync::{Arc, RwLock};
     use std::thread::sleep;
     use std::time::Duration;
 
@@ -369,21 +468,30 @@ mod tests {
         let keypair = Arc::new(Keypair::new());
         let exit = Arc::new(AtomicBool::new(false));
 
+        let cluster_info = test_cluster_info(keypair.pubkey());
+
         let (_storage_entry_sender, storage_entry_receiver) = channel();
         let storage_state = StorageState::new();
         let storage_stage = StorageStage::new(
             &storage_state,
             storage_entry_receiver,
             None,
-            keypair,
-            exit.clone(),
+            &keypair,
+            &exit.clone(),
             0,
             STORAGE_ROTATE_TEST_COUNT,
+            &cluster_info,
         );
         exit.store(true, Ordering::Relaxed);
         storage_stage.join().unwrap();
     }
 
+    fn test_cluster_info(id: Pubkey) -> Arc<RwLock<ClusterInfo>> {
+        let node_info = NodeInfo::new_localhost(id, 0);
+        let cluster_info = ClusterInfo::new(node_info);
+        Arc::new(RwLock::new(cluster_info))
+    }
+
     #[test]
     fn test_storage_stage_process_entries() {
         solana_logger::setup();
@@ -404,16 +512,19 @@ mod tests {
             .write_entries(DEFAULT_SLOT_HEIGHT, genesis_entries.len() as u64, &entries)
             .unwrap();
 
+        let cluster_info = test_cluster_info(keypair.pubkey());
+
         let (storage_entry_sender, storage_entry_receiver) = channel();
         let storage_state = StorageState::new();
         let storage_stage = StorageStage::new(
             &storage_state,
             storage_entry_receiver,
             Some(Arc::new(db_ledger)),
-            keypair,
-            exit.clone(),
+            &keypair,
+            &exit.clone(),
             0,
             STORAGE_ROTATE_TEST_COUNT,
+            &cluster_info,
         );
         storage_entry_sender.send(entries.clone()).unwrap();
 
@@ -469,16 +580,19 @@ mod tests {
             .write_entries(DEFAULT_SLOT_HEIGHT, genesis_entries.len() as u64, &entries)
             .unwrap();
 
+        let cluster_info = test_cluster_info(keypair.pubkey());
+
         let (storage_entry_sender, storage_entry_receiver) = channel();
         let storage_state = StorageState::new();
         let storage_stage = StorageStage::new(
             &storage_state,
             storage_entry_receiver,
             Some(Arc::new(db_ledger)),
-            keypair,
-            exit.clone(),
+            &keypair,
+            &exit.clone(),
             0,
             STORAGE_ROTATE_TEST_COUNT,
+            &cluster_info,
         );
         storage_entry_sender.send(entries.clone()).unwrap();
 

src/tvu.rs

@@ -117,10 +117,11 @@ impl Tvu {
             &bank.storage_state,
             ledger_entry_receiver,
             Some(db_ledger),
-            keypair,
-            exit.clone(),
+            &keypair,
+            &exit.clone(),
             entry_height,
             storage_rotate_count,
+            &cluster_info,
         );
 
         Tvu {