feat(cairo_native): add batcher compiler struct

Cargo.toml

@@ -110,6 +110,7 @@ clap = "4.5.4"
 colored = "2.1.0"
 const_format = "0.2.30"
 criterion = "0.5.1"
+crossbeam-channel = "0.5.13"
 deadqueue = "0.2.4"
 defaultmap = "0.5.0"
 derive_more = "0.99.17"

crates/blockifier/Cargo.toml

@@ -10,7 +10,7 @@ description = "The transaction-executing component in the Starknet sequencer."
 workspace = true
 
 [features]
-cairo_native = ["dep:cairo-native"]
+cairo_native = ["crossbeam-channel", "dep:cairo-native", "starknet_sierra_compile"]
 jemalloc = ["dep:tikv-jemallocator"]
 reexecution = ["transaction_serde"]
 testing = ["rand", "rstest", "starknet_api/testing"]
@@ -31,6 +31,7 @@ cairo-lang-sierra.workspace = true
 cairo-lang-starknet-classes.workspace = true
 cairo-native = { workspace = true, optional = true }
 cairo-vm.workspace = true
+crossbeam-channel = { workspace = true, optional = true }
 derive_more.workspace = true
 indexmap.workspace = true
 itertools.workspace = true
@@ -51,6 +52,7 @@ serde_json = { workspace = true, features = ["arbitrary_precision"] }
 sha2.workspace = true
 starknet-types-core.workspace = true
 starknet_api.workspace = true
+starknet_sierra_compile = { workspace = true, optional = true }
 strum.workspace = true
 strum_macros.workspace = true
 tempfile.workspace = true

crates/blockifier/src/execution/native.rs

@@ -1,3 +1,4 @@
+pub mod batcher_compiler;
 pub mod contract_class;
 pub mod entry_point_execution;
 pub mod syscall_handler;

crates/blockifier/src/execution/native/batcher_compiler.rs

@@ -0,0 +1,68 @@
+use std::sync::Arc;
+
+use crossbeam_channel::Receiver;
+use starknet_api::core::ClassHash;
+use starknet_api::state::ContractClass as SierraContractClass;
+use starknet_sierra_compile::command_line_compiler::CommandLineCompiler;
+use starknet_sierra_compile::SierraToNativeCompiler;
+
+use crate::execution::native::contract_class::NativeContractClassV1;
+use crate::state::global_cache::GlobalContractCacheManager;
+
+type CompilationRequest = (ClassHash, Arc<SierraContractClass>);
+
+struct BatcherCompiler {
+    contract_cache_manager: GlobalContractCacheManager,
+    compilation_request_receiver: Receiver<CompilationRequest>,
+    command_line_compiler: CommandLineCompiler,
+}
+
+impl BatcherCompiler {
+    pub fn new(
+        contract_cache_manager: GlobalContractCacheManager,
+        compilation_request_receiver: Receiver<CompilationRequest>,
+        command_line_compiler: CommandLineCompiler,
+    ) -> Self {
+        Self { contract_cache_manager, compilation_request_receiver, command_line_compiler }
+    }
+    pub fn run(&self) {
+        for (class_hash, sierra_contract_class) in self.compilation_request_receiver.iter() {
+            // TODO(Avi): Convert `sierra_contract_class` to
+            // `cairo_lang_starknet_classes::contract_class::ContractClass`
+            if self
+                .contract_cache_manager
+                .cairo_native_contract_class_cache
+                .get(&class_hash)
+                .is_none()
+            {
+                // Skip the compilation if the contract class is already compiled.
+                continue;
+            }
+            let casm_contract_class = self
+                .contract_cache_manager
+                .casm_contract_class_cache
+                .get(&class_hash)
+                .expect("Casm not found in cache.");
+            let compilation_result =
+                self.command_line_compiler.compile_to_native(sierra_contract_class.into());
+            match compilation_result {
+                Ok(contract_executor) => {
+                    let native_contract_class = NativeContractClassV1::new(
+                        contract_executor,
+                        sierra_contract_class,
+                        casm_contract_class,
+                    );
+                    self.contract_cache_manager
+                        .cairo_native_contract_class_cache
+                        .set(class_hash, Some(native_contract_class));
+                }
+                Err(err) => {
+                    eprintln!("Error compiling contract class: {}", err);
+                    self.contract_cache_manager
+                        .cairo_native_contract_class_cache
+                        .set(class_hash, None);
+                }
+            }
+        }
+    }
+}