Add transactionCount field to GetEpochInfo

cli-output/src/cli_output.rs

@@ -241,6 +241,9 @@ impl fmt::Display for CliEpochInfo {
         )?;
         writeln_name_value(f, "Slot:", &self.epoch_info.absolute_slot.to_string())?;
         writeln_name_value(f, "Epoch:", &self.epoch_info.epoch.to_string())?;
+        if let Some(transaction_count) = &self.epoch_info.transaction_count {
+            writeln_name_value(f, "Transaction Count:", &transaction_count.to_string())?;
+        }
         let start_slot = self.epoch_info.absolute_slot - self.epoch_info.slot_index;
         let end_slot = start_slot + self.epoch_info.slots_in_epoch;
         writeln_name_value(

client/src/mock_sender.rs

@@ -65,6 +65,7 @@ impl RpcSender for MockSender {
                 slots_in_epoch: 32,
                 absolute_slot: 34,
                 block_height: 34,
+                transaction_count: Some(123),
             })?,
             RpcRequest::GetFeeCalculatorForBlockhash => {
                 let value = if self.url == "blockhash_expired" {

runtime/src/bank.rs

@@ -4386,12 +4386,14 @@ impl Bank {
         let block_height = self.block_height();
         let (epoch, slot_index) = self.get_epoch_and_slot_index(absolute_slot);
         let slots_in_epoch = self.get_slots_in_epoch(epoch);
+        let transaction_count = Some(self.transaction_count());
         EpochInfo {
             epoch,
             slot_index,
             slots_in_epoch,
             absolute_slot,
             block_height,
+            transaction_count,
         }
     }
 

sdk/src/epoch_info.rs

@@ -17,4 +17,7 @@ pub struct EpochInfo {
 
     /// The current block height
     pub block_height: u64,
+
+    /// Total number of transactions processed without error since genesis
+    pub transaction_count: Option<u64>,
 }