Add getRecentPrioritizationFees RPC endpoint (backport #27278)

client/src/rpc_response.rs

@@ -541,3 +541,9 @@ pub struct RpcSnapshotSlotInfo {
     pub full: Slot,
     pub incremental: Option<Slot>,
 }
+
+#[derive(Serialize, Deserialize, Clone, Copy, Debug, PartialEq, Eq)]
+pub struct RpcPrioritizationFee {
+    pub slot: Slot,
+    pub prioritization_fee: u64,
+}

core/src/validator.rs

@@ -818,6 +818,34 @@ impl Validator {
             } else {
                 None
             };
+<<<<<<< HEAD
+=======
+
+            let json_rpc_service = JsonRpcService::new(
+                rpc_addr,
+                config.rpc_config.clone(),
+                config.snapshot_config.clone(),
+                bank_forks.clone(),
+                block_commitment_cache.clone(),
+                blockstore.clone(),
+                cluster_info.clone(),
+                Some(poh_recorder.clone()),
+                genesis_config.hash(),
+                ledger_path,
+                config.validator_exit.clone(),
+                config.known_validators.clone(),
+                rpc_override_health_check.clone(),
+                startup_verification_complete,
+                optimistically_confirmed_bank.clone(),
+                config.send_transaction_service_config.clone(),
+                max_slots.clone(),
+                leader_schedule_cache.clone(),
+                connection_cache.clone(),
+                max_complete_transaction_status_slot,
+                prioritization_fee_cache.clone(),
+            )?;
+
+>>>>>>> 9b8bed86f (Add getRecentPrioritizationFees RPC endpoint (#27278))
             (
                 Some(JsonRpcService::new(
                     rpc_addr,

docs/src/developing/clients/jsonrpc-api.md

@@ -48,6 +48,7 @@ gives a convenient interface for the RPC methods.
 - [getMultipleAccounts](jsonrpc-api.md#getmultipleaccounts)
 - [getProgramAccounts](jsonrpc-api.md#getprogramaccounts)
 - [getRecentPerformanceSamples](jsonrpc-api.md#getrecentperformancesamples)
+- [getRecentPrioritizationFees](jsonrpc-api.md#getrecentprioritizationfees)
 - [getSignaturesForAddress](jsonrpc-api.md#getsignaturesforaddress)
 - [getSignatureStatuses](jsonrpc-api.md#getsignaturestatuses)
 - [getSlot](jsonrpc-api.md#getslot)
@@ -2114,6 +2115,65 @@ Result:
 }
 ```
 
+### getRecentPrioritizationFees
+
+Returns a list of minimum prioritization fees from recent blocks. Currently, a
+node's prioritization-fee cache stores data from up to 150 blocks.
+
+#### Parameters:
+
+- `<array>` - (optional) An array of account address strings. If this parameter is provided, the response will reflect the minimum prioritization fee to land a transaction locking all of the provided accounts as writable.
+
+#### Results:
+
+An array of:
+
+- `RpcPrioritizationFee<object>`
+  - `slot: <u64>` - Slot in which minimum fee was observed
+  - `prioritizationFee: <u64>` - Minimum fee paid for a successfully landed transaction
+
+#### Example:
+
+Request:
+
+```bash
+// Request
+curl http://localhost:8899 -X POST -H "Content-Type: application/json" -d '
+  {"jsonrpc":"2.0", "id":1, "method":"getRecentPrioritizationFees", "params": [["CxELquR1gPP8wHe33gZ4QxqGB3sZ9RSwsJ2KshVewkFY"]]}
+'
+```
+
+Result:
+
+```json
+{
+  "jsonrpc": "2.0",
+  "result": [
+    {
+      "slot": 348125,
+      "prioritizationFee": 0,
+    },
+    {
+      "slot": 348126,
+      "prioritizationFee": 1000,
+    },
+    {
+      "slot": 348127,
+      "prioritizationFee": 500,
+    },
+    {
+      "slot": 348128,
+      "prioritizationFee": 0,
+    },
+    {
+      "slot": 348129,
+      "prioritizationFee": 1234,
+    }
+  ],
+  "id": 1
+}
+```
+
 ### getSignaturesForAddress
 
 Returns signatures for confirmed transactions that include the given address in