feat: add state dump and loading for the sequencer

Cargo.toml

@@ -43,6 +43,8 @@ starknet_api = { git = "https://github.com/starkware-libs/starknet-api", rev = "
 # Other
 async-trait = "0.1.58"
 bytes = "1"
+cairo-vm = "0.8.2"
+cairo-lang-starknet = "2.2.0"
 chrono = { version = "0.4.26", features = ["serde"] }
 ctor = "0.2.4"
 dotenv = "0.15.0"

crates/sequencer/Cargo.toml

@@ -12,14 +12,21 @@ license.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0.75"
 # Starknet
 # TODO: remove the blockifier patch on the workspace once we can remove Katana.
 blockifier = { package = "blockifier", git = "https://github.com/starkware-libs/blockifier.git", tag = "v0.3.0-rc0" }
+cairo-lang-starknet = { workspace = true }
+cairo-vm = { workspace = true }
+serde.workspace = true
+serde_json.workspace = true
 starknet_api = { workspace = true }
 starknet = { workspace = true }
+thiserror.workspace = true
 
 # Other
 rustc-hash = "1.1.0"
 
 [dev-dependencies]
 lazy_static = { workspace = true }
+starknet = { workspace = true }

crates/sequencer/src/lib.rs

@@ -1,3 +1,4 @@
 pub mod constants;
 pub mod sequencer;
+pub mod serde;
 pub mod state;

crates/sequencer/src/serde/contract.rs

@@ -0,0 +1,246 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use serde::{Deserialize, Serialize};
+use starknet_api::core::EntryPointSelector;
+use starknet_api::deprecated_contract_class::{EntryPoint, EntryPointOffset, EntryPointType};
+
+use super::program::SerializableProgram;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum SerializableContractClass {
+    V0(SerializableContractClassV0),
+    V1(SerializableContractClassV1),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SerializableContractClassV0 {
+    pub program: SerializableProgram,
+    pub entry_points_by_type: HashMap<EntryPointType, Vec<SerializableEntryPoint>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SerializableContractClassV1 {
+    pub program: SerializableProgram,
+    pub entry_points_by_type: HashMap<EntryPointType, Vec<SerializableEntryPointV1>>,
+    pub hints: HashMap<String, Vec<u8>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SerializableEntryPoint {
+    pub selector: EntryPointSelector,
+    pub offset: SerializableEntryPointOffset,
+}
+
+impl From<EntryPoint> for SerializableEntryPoint {
+    fn from(value: EntryPoint) -> Self {
+        Self {
+            selector: value.selector,
+            offset: value.offset.into(),
+        }
+    }
+}
+
+impl From<SerializableEntryPoint> for EntryPoint {
+    fn from(value: SerializableEntryPoint) -> Self {
+        Self {
+            selector: value.selector,
+            offset: value.offset.into(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SerializableEntryPointOffset(pub usize);
+
+impl From<EntryPointOffset> for SerializableEntryPointOffset {
+    fn from(value: EntryPointOffset) -> Self {
+        Self(value.0)
+    }
+}
+
+impl From<SerializableEntryPointOffset> for EntryPointOffset {
+    fn from(value: SerializableEntryPointOffset) -> Self {
+        Self(value.0)
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SerializableEntryPointV1 {
+    pub selector: EntryPointSelector,
+    pub offset: SerializableEntryPointOffset,
+    pub builtins: Vec<String>,
+}
+
+impl From<SerializableEntryPointV1> for blockifier::execution::contract_class::EntryPointV1 {
+    fn from(value: SerializableEntryPointV1) -> Self {
+        blockifier::execution::contract_class::EntryPointV1 {
+            selector: value.selector,
+            offset: value.offset.into(),
+            builtins: value.builtins,
+        }
+    }
+}
+
+impl From<blockifier::execution::contract_class::EntryPointV1> for SerializableEntryPointV1 {
+    fn from(value: blockifier::execution::contract_class::EntryPointV1) -> Self {
+        SerializableEntryPointV1 {
+            selector: value.selector,
+            offset: value.offset.into(),
+            builtins: value.builtins,
+        }
+    }
+}
+
+impl TryFrom<SerializableContractClass> for blockifier::execution::contract_class::ContractClass {
+    type Error = anyhow::Error;
+
+    fn try_from(value: SerializableContractClass) -> Result<Self, Self::Error> {
+        Ok(match value {
+            SerializableContractClass::V0(v0) => {
+                blockifier::execution::contract_class::ContractClass::V0(
+                    blockifier::execution::contract_class::ContractClassV0(Arc::new(
+                        blockifier::execution::contract_class::ContractClassV0Inner {
+                            program: v0.program.into(),
+                            entry_points_by_type: v0
+                                .entry_points_by_type
+                                .into_iter()
+                                .map(|(k, v)| (k, v.into_iter().map(|h| h.into()).collect()))
+                                .collect(),
+                        },
+                    )),
+                )
+            }
+            SerializableContractClass::V1(v1) => {
+                blockifier::execution::contract_class::ContractClass::V1(
+                    blockifier::execution::contract_class::ContractClassV1(Arc::new(
+                        blockifier::execution::contract_class::ContractClassV1Inner {
+                            hints: v1
+                                .hints
+                                .clone()
+                                .into_iter()
+                                .map(|(k, v)| (k, serde_json::from_slice(&v).unwrap()))
+                                .collect(),
+                            program: v1.program.into(),
+                            entry_points_by_type: v1
+                                .entry_points_by_type
+                                .into_iter()
+                                .map(|(k, v)| {
+                                    (
+                                        k,
+                                        v.into_iter()
+                                            .map(Into::into)
+                                            .collect::<Vec<
+                                                blockifier::execution::contract_class::EntryPointV1,
+                                            >>(),
+                                    )
+                                })
+                                .collect::<HashMap<_, _>>(),
+                        },
+                    )),
+                )
+            }
+        })
+    }
+}
+
+impl From<blockifier::execution::contract_class::ContractClass> for SerializableContractClass {
+    fn from(value: blockifier::execution::contract_class::ContractClass) -> Self {
+        match value {
+            blockifier::execution::contract_class::ContractClass::V0(v0) => {
+                SerializableContractClass::V0(SerializableContractClassV0 {
+                    program: v0.program.clone().into(),
+                    entry_points_by_type: v0
+                        .entry_points_by_type
+                        .clone()
+                        .into_iter()
+                        .map(|(k, v)| (k, v.into_iter().map(|h| h.into()).collect()))
+                        .collect(),
+                })
+            }
+            blockifier::execution::contract_class::ContractClass::V1(v1) => {
+                SerializableContractClass::V1(SerializableContractClassV1 {
+                    program: v1.program.clone().into(),
+                    entry_points_by_type: v1
+                        .entry_points_by_type
+                        .clone()
+                        .into_iter()
+                        .map(|(k, v)| {
+                            (
+                                k,
+                                v.into_iter()
+                                    .map(Into::into)
+                                    .collect::<Vec<SerializableEntryPointV1>>(),
+                            )
+                        })
+                        .collect::<HashMap<_, _>>(),
+                    hints: v1
+                        .hints
+                        .clone()
+                        .into_iter()
+                        .map(|(k, v)| (k, serde_json::to_vec(&v).unwrap()))
+                        .collect(),
+                })
+            }
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use blockifier::execution::contract_class::ContractClass;
+    use starknet::core::types::contract::SierraClass;
+
+    use super::*;
+    use crate::serde::utils::{get_contract_class, rpc_to_inner_class};
+
+    #[test]
+    fn serialize_and_deserialize_legacy_contract() {
+        let original_contract = get_contract_class(include_str!(
+            "../test_data/contracts/compiled/universal_deployer.json"
+        ));
+
+        let serializable_contract: SerializableContractClass = original_contract.clone().into();
+        assert!(matches!(
+            serializable_contract,
+            SerializableContractClass::V0(_)
+        ));
+
+        let bytes = serde_json::to_vec(&serializable_contract).unwrap();
+        let serializable_contract: SerializableContractClass =
+            serde_json::from_slice(&bytes).unwrap();
+
+        let contract: ContractClass = serializable_contract
+            .try_into()
+            .expect("should deserialize");
+        assert_eq!(contract, original_contract);
+    }
+
+    #[test]
+    fn serialize_and_deserialize_contract() {
+        let class = serde_json::from_str::<SierraClass>(include_str!(
+            "../test_data/contracts/compiled/cairo1_contract.json"
+        ))
+        .expect("should deserialize sierra class")
+        .flatten()
+        .expect("should flatten");
+
+        let (_, original_contract) =
+            rpc_to_inner_class(&class).expect("should convert from flattened to contract class");
+
+        let serializable_contract: SerializableContractClass = original_contract.clone().into();
+        assert!(matches!(
+            serializable_contract,
+            SerializableContractClass::V1(_)
+        ));
+
+        let bytes = serde_json::to_vec(&serializable_contract).unwrap();
+        let serializable_contract: SerializableContractClass =
+            serde_json::from_slice(&bytes).unwrap();
+
+        let contract: ContractClass = serializable_contract
+            .try_into()
+            .expect("should deserialize");
+        assert_eq!(contract, original_contract);
+    }
+}

crates/sequencer/src/serde/mod.rs

@@ -0,0 +1,4 @@
+pub mod contract;
+pub mod program;
+pub mod state;
+pub mod utils;