Add get-nonce endpoint

kairos-cli/src/client.rs

@@ -3,6 +3,8 @@ use casper_client::types::{DeployBuilder, DeployHash, ExecutableDeployItem, Time
 use casper_client_types::{crypto::SecretKey, runtime_args, ContractHash, RuntimeArgs, U512};
 use kairos_server::routes::contract_hash::ContractHashPath;
 use kairos_server::routes::deposit::DepositPath;
+use kairos_server::routes::get_nonce::GetNoncePath;
+use kairos_server::PublicKey;
 use reqwest::Url;
 use serde::{Deserialize, Serialize};
 use std::fmt;
@@ -18,7 +20,7 @@ pub enum KairosClientError {
     ResponseErrorWithCode(u16, String),
     DecodeError(String),
     CasperClientError(String),
-    KairosServerError(String),
+    KairosServerError(u16, String),
 }
 
 impl std::error::Error for KairosClientError {}
@@ -84,15 +86,29 @@ pub fn deposit(
         .header("Content-Type", "application/json")
         .json(&deploy)
         .send()
-        .map_err(KairosClientError::from)?;
+        .map_err(KairosClientError::from)?
+        .error_for_status();
 
-    let status = response.status();
-    if !status.is_success() {
-        Err(KairosClientError::KairosServerError(status.to_string()))
-    } else {
-        response
+    match response {
+        Err(err) => Err(KairosClientError::from(err)),
+        Ok(response) => response
             .json::<DeployHash>()
-            .map_err(KairosClientError::from)
+            .map_err(KairosClientError::from),
+    }
+}
+
+pub fn get_nonce(base_url: &Url, account: &PublicKey) -> Result<u64, KairosClientError> {
+    let response = reqwest::blocking::Client::new()
+        .post(base_url.join(GetNoncePath::PATH).unwrap())
+        .header("Content-Type", "application/json")
+        .json(&account)
+        .send()
+        .map_err(KairosClientError::from)?
+        .error_for_status();
+
+    match response {
+        Err(err) => Err(KairosClientError::from(err)),
+        Ok(response) => response.json::<u64>().map_err(KairosClientError::from),
     }
 }
 
@@ -105,7 +121,10 @@ pub fn contract_hash(base_url: &Url) -> Result<ContractHash, KairosClientError>
 
     let status = response.status();
     if !status.is_success() {
-        Err(KairosClientError::KairosServerError(status.to_string()))
+        Err(KairosClientError::KairosServerError(
+            status.as_u16(),
+            status.to_string(),
+        ))
     } else {
         response
             .json::<ContractHash>()

kairos-cli/src/commands/transfer.rs

@@ -1,4 +1,4 @@
-use crate::client::KairosClientError;
+use crate::client::{self, KairosClientError};
 use crate::common::args::{AmountArg, NonceArg, PrivateKeyPathArg, RecipientArg};
 use crate::error::CliError;
 
@@ -30,15 +30,19 @@ pub fn run(args: Args, kairos_server_address: Url) -> Result<String, CliError> {
     let amount: u64 = args.amount.field;
     let signer =
         Signer::from_private_key_file(args.private_key_path.field).map_err(CryptoError::from)?;
-    let nonce = args.nonce.val;
+    let signer_public_key = signer.to_public_key()?;
+    let nonce = match args.nonce.val {
+        None => client::get_nonce(&kairos_server_address, &signer_public_key)?,
+        Some(nonce) => nonce,
+    };
 
     // TODO: Create transaction and sign it with `signer`.
 
     // TODO: Send transaction to the network, using Rust SDK.
     let res = reqwest::blocking::Client::new()
         .post(kairos_server_address.join(TransferPath::PATH).unwrap())
         .json(&PayloadBody {
-            public_key: signer.to_public_key()?,
+            public_key: signer_public_key,
             payload: SigningPayload::new(nonce, Transfer::new(recipient, amount))
                 .try_into()
                 .unwrap(),

kairos-cli/src/commands/withdraw.rs

@@ -1,4 +1,4 @@
-use crate::client::KairosClientError;
+use crate::client::{self, KairosClientError};
 use crate::common::args::{AmountArg, NonceArg, PrivateKeyPathArg};
 use crate::error::CliError;
 
@@ -27,15 +27,19 @@ pub fn run(args: Args, kairos_server_address: Url) -> Result<String, CliError> {
     let amount: u64 = args.amount.field;
     let signer =
         Signer::from_private_key_file(args.private_key_path.field).map_err(CryptoError::from)?;
-    let nonce = args.nonce.val;
+    let signer_public_key = signer.to_public_key()?;
+    let nonce = match args.nonce.val {
+        None => client::get_nonce(&kairos_server_address, &signer_public_key)?,
+        Some(nonce) => nonce,
+    };
 
     // TODO: Create transaction and sign it with `signer`.
 
     // TODO: Send transaction to the network, using Rust SDK.
     let res = reqwest::blocking::Client::new()
         .post(kairos_server_address.join(WithdrawPath::PATH).unwrap())
         .json(&PayloadBody {
-            public_key: signer.to_public_key()?,
+            public_key: signer_public_key,
             payload: SigningPayload::new(nonce, Withdrawal::new(amount))
                 .try_into()
                 .unwrap(),

kairos-cli/src/common/args.rs

@@ -21,7 +21,7 @@ pub struct PrivateKeyPathArg {
 #[derive(Args, Debug)]
 pub struct NonceArg {
     #[arg(id = "nonce", long, short, value_name = "NUM")]
-    pub val: u64,
+    pub val: Option<u64>,
 }
 
 #[derive(Args, Debug)]

kairos-cli/tests/cli_tests.rs

@@ -101,8 +101,6 @@ fn transfer_successful_with_secp256k1() {
         .arg(recipient)
         .arg("--amount")
         .arg("123")
-        .arg("--nonce")
-        .arg("0")
         .arg("--private-key")
         .arg(secret_key_path);
 
@@ -120,8 +118,6 @@ fn withdraw_successful_with_ed25519() {
     cmd.arg("withdraw")
         .arg("--amount")
         .arg("123")
-        .arg("--nonce")
-        .arg("0")
         .arg("--private-key")
         .arg(secret_key_path);
 
@@ -197,9 +193,7 @@ fn transfer_invalid_recipient() {
         .arg("--amount")
         .arg("123")
         .arg("--private-key")
-        .arg(secret_key_path)
-        .arg("--nonce")
-        .arg("0");
+        .arg(secret_key_path);
 
     cmd.assert()
         .failure()
@@ -218,9 +212,7 @@ fn transfer_valid_recipient() {
         .arg("--amount")
         .arg("123")
         .arg("--private-key")
-        .arg(secret_key_path)
-        .arg("--nonce")
-        .arg("0");
+        .arg(secret_key_path);
 
     cmd.assert()
         .failure()

kairos-prover/kairos-circuit-logic/src/account_trie.rs

@@ -310,6 +310,16 @@ impl<Db: DatabaseGet<Account>> AccountTrie<SnapshotBuilder<Db, Account>> {
             Ok(())
         }
     }
+
+    /// Returns the nonce for an accounts public key if it's known, returns an error if unknown.
+    pub fn get_nonce_for(&self, account: &PublicKey) -> Result<u64, TxnErr> {
+        let [account_hash] = hash_buffers([account]);
+
+        let account = self.txn.get_exclude_from_txn(&account_hash)?;
+        let account = account.ok_or("Unknown account")?;
+
+        Ok(account.nonce)
+    }
 }
 
 /// An account in the trie.

kairos-server/src/lib.rs

@@ -20,7 +20,7 @@ use crate::state::{BatchStateManager, ServerState, ServerStateInner};
 pub use errors::AppErr;
 
 /// TODO: support secp256k1
-type PublicKey = Vec<u8>;
+pub type PublicKey = Vec<u8>;
 type Signature = Vec<u8>;
 
 #[cfg(not(feature = "deposit-mock"))]
@@ -39,6 +39,7 @@ pub fn app_router(state: ServerState) -> Router {
         .typed_post(routes::withdraw_handler)
         .typed_post(routes::transfer_handler)
         .typed_post(routes::deposit_mock_handler)
+        .typed_post(routes::get_nonce_handler)
         .typed_get(routes::contract_hash_handler)
         .with_state(state)
 }

kairos-server/src/routes/get_nonce.rs

@@ -0,0 +1,19 @@
+use axum::{extract::State, Json};
+use axum_extra::routing::TypedPath;
+use tracing::*;
+
+use crate::{state::ServerState, AppErr, PublicKey};
+
+#[derive(TypedPath, Debug, Clone, Copy)]
+#[typed_path("/api/v1/nonce")]
+pub struct GetNoncePath;
+
+#[instrument(level = "trace", skip(state), ret)]
+pub async fn get_nonce_handler(
+    _: GetNoncePath,
+    state: State<ServerState>,
+    Json(body): Json<PublicKey>,
+) -> Result<Json<u64>, AppErr> {
+    let nonce = state.batch_state_manager.get_nonce_for(body).await?;
+    Ok(Json(nonce))
+}

kairos-server/src/routes/mod.rs

@@ -2,13 +2,15 @@ pub mod contract_hash;
 pub mod deposit;
 #[cfg(feature = "deposit-mock")]
 pub mod deposit_mock;
+pub mod get_nonce;
 pub mod transfer;
 pub mod withdraw;
 
 pub use contract_hash::contract_hash_handler;
 pub use deposit::deposit_handler;
 #[cfg(feature = "deposit-mock")]
 pub use deposit_mock::deposit_mock_handler;
+pub use get_nonce::get_nonce_handler;
 pub use transfer::transfer_handler;
 pub use withdraw::withdraw_handler;
 

kairos-server/src/state.rs

@@ -13,7 +13,7 @@ use tokio::{
 use casper_client::types::DeployHash;
 
 pub use self::trie::TrieStateThreadMsg;
-use crate::{config::ServerConfig, state::submit_batch::submit_proof_to_contract};
+use crate::{config::ServerConfig, state::submit_batch::submit_proof_to_contract, PublicKey};
 use kairos_circuit_logic::transactions::KairosTransaction;
 use kairos_trie::{stored::memory_db::MemoryDb, NodeHash, TrieRoot};
 
@@ -138,4 +138,21 @@ impl BatchStateManager {
             .await
             .expect("Never received response from trie thread")
     }
+
+    pub async fn get_nonce_for(&self, account: PublicKey) -> Result<u64, crate::AppErr> {
+        let (msg, response) = TrieStateThreadMsg::get_nonce_for(account);
+
+        self.queued_transactions.send(msg).await.map_err(|err| {
+            tracing::error!("Could not send get-nonce request to trie thread {:?}", err);
+            crate::AppErr::new(err)
+        })?;
+
+        response.await.map_err(|err| {
+            tracing::error!(
+                "Never received response from the trie thread for the get-nonce-request {:?}",
+                err
+            );
+            crate::AppErr::new(err)
+        })?
+    }
 }

kairos-server/src/state/trie.rs

@@ -20,12 +20,15 @@ use kairos_trie::{
     DigestHasher, NodeHash, TrieRoot,
 };
 
+use kairos_circuit_logic::transactions::PublicKey;
+
 pub type Database = MemoryDb<Account>;
 
 #[derive(Debug)]
 pub enum TrieStateThreadMsg {
     Transaction(KairosTransaction, oneshot::Sender<Result<(), AppErr>>),
     Commit(oneshot::Sender<Result<BatchOutput, AppErr>>),
+    GetNonce(PublicKey, oneshot::Sender<Result<u64, AppErr>>),
 }
 
 impl TrieStateThreadMsg {
@@ -38,6 +41,11 @@ impl TrieStateThreadMsg {
         let (sender, receiver) = oneshot::channel();
         (Self::Commit(sender), receiver)
     }
+
+    pub fn get_nonce_for(account: PublicKey) -> (Self, oneshot::Receiver<Result<u64, AppErr>>) {
+        let (sender, receiver) = oneshot::channel();
+        (Self::GetNonce(account, sender), receiver)
+    }
 }
 
 pub fn spawn_state_thread(
@@ -103,6 +111,23 @@ pub fn spawn_state_thread(
                         tracing::error!("failed to send commit result: {:?}", err);
                     }
                 }
+                TrieStateThreadMsg::GetNonce(account, responder) => {
+                    let res = state
+                        .batch_state
+                        .account_trie
+                        .get_nonce_for(&account)
+                        .map_err(|err| {
+                            AppErr::new(anyhow::anyhow!(err))
+                                .set_status(axum::http::StatusCode::NOT_FOUND)
+                        });
+                    if let Err(err) = responder.send(res) {
+                        tracing::error!(
+                            "Failed to get the nonce for account '{:?}': {:?}",
+                            account,
+                            err
+                        );
+                    }
+                }
             }
         }
     })

nixos/tests/end-to-end.nix

@@ -18,6 +18,7 @@ let
   contractHashName = "kairos_contract_package_hash";
   # The path where cctl will write the deployed contract hash on the servers filesystem
   serverContractHashPath = "${cctlWorkingDirectory}/contracts/${contractHashName}";
+  casperSyncInterval = 5;
 in
 nixosTest {
   name = "kairos e2e test";
@@ -57,7 +58,7 @@ nixosTest {
       services.kairos = {
         casperRpcUrl = "http://localhost:${builtins.toString config.services.cctl.port}/rpc";
         casperSseUrl = "http://localhost:18101/events/main"; # has to be hardcoded since it's not configurable atm
-        casperSyncInterval = 5;
+        inherit casperSyncInterval;
         demoContractHash = "0000000000000000000000000000000000000000000000000000000000000000";
       };
 
@@ -131,13 +132,12 @@ nixosTest {
 
     wait_for_successful_deploy(deposit_deploy_hash)
 
-    # wait for l2 to sync with l1 every 10 seconds
-    time.sleep(12)
-
+    # wait for l2 to sync with l1 every 5 seconds
+    time.sleep(${builtins.toString (casperSyncInterval * 2)})
 
     # transfer
     beneficiary = client.succeed("cat ${clientUsersDirectory}/user-3/public_key_hex")
-    transfer_output = client.succeed("kairos-cli --kairos-server-address http://kairos transfer --nonce 0 --amount 1000 --recipient {} --private-key {}".format(beneficiary, depositor_private_key))
+    transfer_output = client.succeed("kairos-cli --kairos-server-address http://kairos transfer --amount 1000 --recipient {} --private-key {}".format(beneficiary, depositor_private_key))
     assert "Transfer successfully sent to L2\n" in transfer_output, "The transfer command was not successful: {}".format(transfer_output)
 
     # TODO test withdraw