Add get_minimum_balance_for_rent_excemption to Client (#14048)

client/src/thin_client.rs

@@ -399,6 +399,12 @@ impl SyncClient for ThinClient {
             .map(|r| r.value)
     }
 
+    fn get_minimum_balance_for_rent_exemption(&self, data_len: usize) -> TransportResult<u64> {
+        self.rpc_client()
+            .get_minimum_balance_for_rent_exemption(data_len)
+            .map_err(|e| e.into())
+    }
+
     fn get_recent_blockhash(&self) -> TransportResult<(Hash, FeeCalculator)> {
         let (blockhash, fee_calculator, _last_valid_slot) =
             self.get_recent_blockhash_with_commitment(CommitmentConfig::default())?;

runtime/src/bank_client.rs

@@ -140,6 +140,10 @@ impl SyncClient for BankClient {
         Ok(self.bank.get_balance(pubkey))
     }
 
+    fn get_minimum_balance_for_rent_exemption(&self, data_len: usize) -> Result<u64> {
+        Ok(self.bank.get_minimum_balance_for_rent_exemption(data_len))
+    }
+
     fn get_recent_blockhash(&self) -> Result<(Hash, FeeCalculator)> {
         Ok(self.bank.last_blockhash_with_fee_calculator())
     }

sdk/src/client.rs

@@ -78,6 +78,8 @@ pub trait SyncClient {
         commitment_config: CommitmentConfig,
     ) -> Result<u64>;
 
+    fn get_minimum_balance_for_rent_exemption(&self, data_len: usize) -> Result<u64>;
+
     /// Get recent blockhash
     fn get_recent_blockhash(&self) -> Result<(Hash, FeeCalculator)>;