Add SimulateTransaction RPC endpoint (bp #10106) (#10115)

automerge

client/src/rpc_client.rs

@@ -114,6 +114,21 @@ impl RpcClient {
         }
     }
 
+    pub fn simulate_transaction(
+        &self,
+        transaction: &Transaction,
+        sig_verify: bool,
+    ) -> RpcResult<TransactionStatus> {
+        let serialized_encoded = bs58::encode(serialize(transaction).unwrap()).into_string();
+        let response = self.send(
+            &RpcRequest::SimulateTransaction,
+            json!([serialized_encoded, { "sigVerify": sig_verify }]),
+            0,
+        )?;
+        Ok(serde_json::from_value(response)
+            .map_err(|err| ClientError::new_with_command(err.into(), "SimulateTransaction"))?)
+    }
+
     pub fn get_signature_status(
         &self,
         signature: &Signature,

client/src/rpc_config.rs

@@ -0,0 +1,28 @@
+use solana_sdk::commitment_config::CommitmentConfig;
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RpcSignatureStatusConfig {
+    pub search_transaction_history: bool,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RpcSimulateTransactionConfig {
+    pub sig_verify: bool,
+}
+
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub enum RpcLargestAccountsFilter {
+    Circulating,
+    NonCirculating,
+}
+
+#[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct RpcLargestAccountsConfig {
+    #[serde(flatten)]
+    pub commitment: Option<CommitmentConfig>,
+    pub filter: Option<RpcLargestAccountsFilter>,
+}

client/src/rpc_request.rs

@@ -36,6 +36,7 @@ pub enum RpcRequest {
     RegisterNode,
     RequestAirdrop,
     SendTransaction,
+    SimulateTransaction,
     SignVote,
     GetMinimumBalanceForRentExemption,
     MinimumLedgerSlot,
@@ -78,6 +79,7 @@ impl RpcRequest {
             RpcRequest::RegisterNode => "registerNode",
             RpcRequest::RequestAirdrop => "requestAirdrop",
             RpcRequest::SendTransaction => "sendTransaction",
+            RpcRequest::SimulateTransaction => "simulateTransaction",
             RpcRequest::SignVote => "signVote",
             RpcRequest::GetMinimumBalanceForRentExemption => "getMinimumBalanceForRentExemption",
             RpcRequest::MinimumLedgerSlot => "minimumLedgerSlot",