feat: enhance event filtering and monitoring system

- Add EventTypeFilter for precise event type filtering
- Refactor metrics to track events by type (tx/account/block)
- Add parser caching for improved performance
- Enhance gRPC subscription management
- Update examples and type definitions

src/main.rs

@@ -2,6 +2,7 @@ use solana_streamer_sdk::{
     match_event,
     streaming::{
         event_parser::{
+            common::{filter::EventTypeFilter, EventType},
             protocols::{
                 bonk::{
                     parser::BONK_PROGRAM_ID, BonkGlobalConfigAccountEvent, BonkMigrateToAmmEvent,
@@ -97,16 +98,22 @@ async fn test_grpc() -> Result<(), Box<dyn std::error::Error>> {
     let account_exclude = vec![];
     let account_required = vec![];
 
-    // 监听交易数据
+    // Listen to transaction data
     let transaction_filter = TransactionFilter {
         account_include: account_include.clone(),
         account_exclude,
         account_required,
     };
 
-    // 监听属于owner程序的账号数据 -> 账号事件监听
+    // Listen to account data belonging to owner programs -> account event monitoring
     let account_filter = AccountFilter { account: vec![], owner: account_include.clone() };
 
+    // Event filtering
+    // No event filtering, includes all events
+    let event_type_filter = None;
+    // Only include PumpSwapBuy events and PumpSwapSell events
+    // let event_type_filter = EventTypeFilter { include: vec![EventType::PumpSwapBuy, EventType::PumpSwapSell] };
+
     println!("Starting to listen for events, press Ctrl+C to stop...");
     println!("Monitoring programs: {:?}", account_include);
 
@@ -117,6 +124,7 @@ async fn test_grpc() -> Result<(), Box<dyn std::error::Error>> {
         None,
         transaction_filter,
         account_filter,
+        event_type_filter,
         None,
         callback,
     )