dev: set minimal base fee at start up (#1505)

set the minimal base fee at rpc start up

Signed-off-by: Gregory Edison <gregory.edison1993@gmail.com>

src/main.rs

@@ -7,13 +7,16 @@ use kakarot_rpc::{
     constants::{KAKAROT_RPC_CONFIG, RPC_CONFIG},
     eth_rpc::{rpc::KakarotRpcModuleBuilder, run_server},
     pool::mempool::{maintain_transaction_pool, AccountManager},
-    providers::eth_provider::database::Database,
+    providers::eth_provider::{
+        database::Database,
+        starknet::kakarot_core::{core::KakarotCoreReader, KAKAROT_ADDRESS},
+    },
 };
 use mongodb::options::{DatabaseOptions, ReadConcern, WriteConcern};
 use opentelemetry_sdk::runtime::Tokio;
 use reth_transaction_pool::PoolConfig;
 use starknet::{
-    core::types::Felt,
+    core::types::{BlockId, BlockTag, Felt},
     providers::{jsonrpc::HttpTransport, JsonRpcClient},
 };
 use tracing_opentelemetry::MetricsLayer;
@@ -46,9 +49,12 @@ async fn main() -> Result<()> {
     let starknet_provider = Arc::new(starknet_provider);
 
     // Get the pool config
-    // TODO call Kakarot.get_base_fee
-    let config = PoolConfig { minimal_protocol_basefee: 0, ..Default::default() };
+    let contract_reader = KakarotCoreReader::new(*KAKAROT_ADDRESS, starknet_provider.clone());
+    let base_fee = contract_reader.get_base_fee().block_id(BlockId::Tag(BlockTag::Pending)).call().await?.base_fee;
+    let base_fee = base_fee.try_into()?;
+    let config = PoolConfig { minimal_protocol_basefee: base_fee, ..Default::default() };
 
+    // Init the Ethereum Client
     let eth_client = EthClient::new(starknet_provider, config, db.clone());
     let eth_client = Arc::new(eth_client);