Patch pedersen hash with cpp native implementation

pyproject.toml

@@ -18,6 +18,7 @@ cairo-lang = "0.8.2.1"
 dill = "~0.3.4"
 meinheld = "~1.0.2"
 Werkzeug = "~2.0.3"
+crypto-cpp-py = "^1.0.3"
 
 [tool.poetry.dev-dependencies]
 pylint = "~2.12.2"

starknet_devnet/__init__.py

@@ -1,5 +1,26 @@
 """
 Contains the server implementation and its utility classes and functions.
 """
+import sys
+from starkware.crypto.signature.fast_pedersen_hash import pedersen_hash
+from crypto_cpp_py.cpp_bindings import cpp_hash
+
 
 __version__ = "0.2.2"
+
+
+def patched_pedersen_hash(left: int, right: int) -> int:
+    """
+    Pedersen hash function written in c++
+    """
+    return cpp_hash(left, right)
+
+
+# This is a monkey-patch to improve the performance of the devnet
+# We are using c++ code for calculating the pedersen hashes
+# instead of python implementation from cairo-lang package
+setattr(
+    sys.modules["starkware.crypto.signature.fast_pedersen_hash"],
+    "pedersen_hash",
+    patched_pedersen_hash,
+)

starknet_devnet/blueprints/gateway.py

@@ -9,7 +9,7 @@
 from starknet_devnet.state import state
 from .shared import validate_transaction
 
-gateway = Blueprint("gateay", __name__, url_prefix="/gateway")
+gateway = Blueprint("gateway", __name__, url_prefix="/gateway")
 
 @gateway.route("/is_alive", methods=["GET"])
 def is_alive():