feat: init code

.github/workflows/test.yml

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+name: CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+env:
+  FOUNDRY_PROFILE: ci
+
+jobs:
+  check:
+    strategy:
+      fail-fast: true
+
+    name: Foundry project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
+
+      - name: Show Forge version
+        run: |
+          forge --version
+
+      - name: Run Forge fmt
+        run: |
+          forge fmt --check
+        id: fmt
+
+      - name: Run Forge build
+        run: |
+          forge build --sizes
+        id: build
+
+      - name: Run Forge tests
+        run: |
+          forge test -vvv
+        id: test

.gitignore

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+# Compiler files
+cache/
+out/
+
+# Ignores development broadcast logs
+!/broadcast
+/broadcast/*/31337/
+/broadcast/**/dry-run/
+
+# Docs
+docs/
+
+# Dotenv file
+.env
+
+node_modules/

.gitmodules

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+[submodule "lib/forge-std"]
+	path = lib/forge-std
+	url = https://github.com/foundry-rs/forge-std

README.md

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+## Cal-Pi-On-Chain
+
+This is a demo repo using OVM contracts lib to calculate Pi onchain.
+
+`./prgrams` contains the python code for computing task.
+`./src` is the main entry for the contract code.
+
+## Documentation
+
+https://book.getfoundry.sh/
+
+## Usage
+
+### Build
+
+```shell
+$ forge build
+```
+
+### Test
+
+```shell
+$ forge test
+```
+
+### Format
+
+```shell
+$ forge fmt
+```
+
+### Gas Snapshots
+
+```shell
+$ forge snapshot
+```
+
+### Anvil
+
+```shell
+$ anvil
+```
+
+### Deploy
+
+```shell
+$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
+```
+
+### Cast
+
+```shell
+$ cast <subcommand>
+```
+
+### Help
+
+```shell
+$ forge --help
+$ anvil --help
+$ cast --help
+```

foundry.toml

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+[profile.default]
+src = "src"
+out = "out"
+libs = ["node_modules","lib"]
+
+# See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options

package.json

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+{
+  "dependencies": {
+    "@webisopen/ovm-contracts": "^1.0.0",
+    "@openzeppelin/contracts": "^5.0.2"
+  }
+}

programs/main.py

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+import math
+import sys
+from typing import Union
+import eth_abi
+import ovm
+
+bridge = ovm.Bridge()
+
+
+def cal_pi(n: int) -> Union[bool, str]:
+    if n > 15:
+        raise ValueError("n must be less than 15")
+
+    return True, format(math.pi, f".{n}f")
+
+
+def main():
+    if len(sys.argv) != 2:
+        raise ValueError("missing messages argument")
+
+    (input,) = eth_abi.decode(["int"], bytes.fromhex(sys.argv[1]))
+
+    bridge.submit(["bool", "string"], [True, cal_pi(input)])
+
+
+if __name__ == "__main__":
+    main()

programs/ovm/__init__.py

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+import os
+import sys
+
+
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from . import bridge_pb2
+from . import bridge_pb2_grpc
+from .bridge import Bridge
+
+__all__ = ["Bridge", "bridge_pb2", "bridge_pb2_grpc"]

programs/ovm/bridge.py

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+from typing import Any, Iterable
+import eth_abi
+from eth_typing import TypeStr
+import grpc
+from . import bridge_pb2
+from . import bridge_pb2_grpc
+
+class Bridge:
+    def __init__(self):
+        self.bridge_client = bridge_pb2_grpc.BridgeStub(grpc.insecure_channel("unix:///var/run/ovm.sock"))
+
+    def load(self):
+        return self.bridge_client.Load(bridge_pb2.LoadRequest())
+
+    def submit(self, abi: Iterable[TypeStr], values: Iterable[Any]):
+        return self.bridge_client.Submit(bridge_pb2.SubmitRequest(output=eth_abi.encode(abi, values).hex()))