feat: add cache size to batcher config (#1493)

config/mempool/default_config.json

@@ -134,6 +134,11 @@
     "privacy": "Public",
     "value": 1000000
   },
+  "batcher_config.global_contract_cache_size": {
+    "description": "Cache size for the global_class_hash_to_class. Initialized with this size on creation.",
+    "privacy": "Public",
+    "value": 400
+  },
   "batcher_config.outstream_content_buffer_size": {
     "description": "Maximum items to add to the outstream buffer before blocking further filling of the stream.",
     "privacy": "Public",

crates/batcher/src/batcher.rs

@@ -166,13 +166,10 @@ pub fn create_batcher(config: BatcherConfig, mempool_client: SharedMempoolClient
     let (storage_reader, storage_writer) = papyrus_storage::open_storage(config.storage.clone())
         .expect("Failed to open batcher's storage");
 
-    // TODO(Yael 15/10/2024): Add cache_size to the config.
-    let cache_size = 100;
-
     let block_builder_factory = Arc::new(BlockBuilderFactory {
         block_builder_config: config.block_builder_config.clone(),
         storage_reader: storage_reader.clone(),
-        global_class_hash_to_class: GlobalContractCache::new(cache_size),
+        global_class_hash_to_class: GlobalContractCache::new(config.global_contract_cache_size),
     });
     let storage_reader = Arc::new(storage_reader);
     let storage_writer = Box::new(storage_writer);

crates/batcher/src/config.rs

@@ -15,6 +15,7 @@ pub struct BatcherConfig {
     pub proposal_manager: ProposalManagerConfig,
     pub outstream_content_buffer_size: usize,
     pub block_builder_config: BlockBuilderConfig,
+    pub global_contract_cache_size: usize,
 }
 
 impl SerializeConfig for BatcherConfig {
@@ -28,6 +29,13 @@ impl SerializeConfig for BatcherConfig {
              stream.",
             ParamPrivacyInput::Public,
         )]));
+        dump.append(&mut BTreeMap::from([ser_param(
+            "global_contract_cache_size",
+            &self.global_contract_cache_size,
+            "Cache size for the global_class_hash_to_class. Initialized with this size on \
+             creation.",
+            ParamPrivacyInput::Public,
+        )]));
         dump.append(&mut append_sub_config_name(self.storage.dump(), "storage"));
         dump.append(&mut append_sub_config_name(
             self.block_builder_config.dump(),
@@ -54,6 +62,7 @@ impl Default for BatcherConfig {
             // TODO: set a more reasonable default value.
             outstream_content_buffer_size: 100,
             block_builder_config: BlockBuilderConfig::default(),
+            global_contract_cache_size: 400,
         }
     }
 }