RPC interface for wasm version of Komodo DeFi Framework

This project helps create a simple RPC interface for the wasm version of Komodo DeFi Framework. It allows you to send RPC requests to the KDF's wasm lib running in a web browser and get the response

Setup

1. Clone the repository

git clone https://github.com/KomodoPlatform/komodefi-wasm-rpc

2. Install nvm, node and yarn

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
# Restart your terminal after installing nvm
# Or follow instructions at https://github.com/nvm-sh/nvm#install--update-script
nvm install 18
npm install -g yarn

3. Install dependencies, set environment variables and update MM2.json

cd komodefi-wasm-rpc
yarn install --frozen-lockfile
cp .env.example .env
cp MM2_example.json MM2.json

• Run the setup.sh script to set the group and user id variables in the .env file
• Change the port values in the .env file if necessary, the VITE_WASM_BIN value will be set automatically when updating the wasm lib using the update_wasm.sh script. the VITE_LOGS_LIMIT value will determine how many logs will be stored in the servers's memory. the MM2_LOG_FILE value will determine the log file name
• Update the MM2.json file with the appropriate values

Usage with docker

Run the following command to start the docker container

docker compose up

• It will start a web socket server at ws://localhost:7777/ (typically don't need to care about this)
• It will start a rpc server at http://localhost:7783/ and listens for POST requests at http://localhost:7783/rpc

If you update the kdf wasm lib, restart the docker container for the changes to take effect:

docker compose down && docker compose up

Usage without docker

1. Run the RPC and WebSocket server

node server.cjs

• It will start a web socket server at ws://localhost:7777/ (typically don't need to care about this)
• It will start a rpc server at http://localhost:7783/ and listens for POST requests at http://localhost:7783/rpc

2. Run the server for KDF's wasm lib

yarn preview

• It will create a simple site with the wasm lib running at http://localhost:3000/
• The site will connect to the WebSocket server running at ws://localhost:7777/ and wait for RPC requests

3. Visit the site at http://localhost:3000/

Sending a request (POST)

A curl request will look like this:

curl http://localhost:7783/rpc -d '{"userpass": "RPC_UserP@SSW0RD", "method": "version"}'

Update coins file

Update the coins file by running the following command. It just needs a url that has a coins json in valid format

./update_coins.sh https://raw.githubusercontent.com/KomodoPlatform/coins/master/coins

If you have a coins array in MM2.json, the kdf wasm lib will use that instead of using the coins file downloaded from this script

Update the wasm lib based on url

./update_wasm.sh https://sdk.devbuilds.komodo.earth/dev/kdf_e65fefe-wasm.zip

It just needs a url that has a wasm lib in valid format

Update the wasm lib based on local file

./update_wasm_local.sh ~/Downloads/kdf_e65fefe-wasm.zip

Misc features

Update the wasm lib (POST)

curl http://localhost:7783/admin -d '{
  "action": "update_wasm_lib",
  "wasm_lib_url": "https://sdk.devbuilds.komodo.earth/dev/kdf_e65fefe-wasm.zip"
}'

Reload the page running the KDF lib (POST)

Use the reload_kdf_page action to reload the page running the wasm lib

curl http://localhost:7783/admin -d '{
  "action": "reload_kdf_page"
}'

Send the mm2_conf param and/or coins_json_url param in addition to use a custom MM2 configuration and coins file. Fetching the coins file must return a json with a valid coins array

curl http://localhost:7783/admin -d '{
  "action": "reload_kdf_page",
  "mm2_conf": {
    "gui": "MM2_WASM_RPC_TESTER",
    "mm2": 1,
    "passphrase": "wasmtest1",
    "allow_weak_password": true,
    "rpc_password": "RPC_UserP@SSW0RD",
    "netid": 8762
  },
  "coins_json_url": "https://raw.githubusercontent.com/KomodoPlatform/coins/cosmos/coins"
}'

Restart the KDF lib on the same page (POST)

curl http://localhost:7783/admin -d '{
  "action": "restart_kdf"
}'

curl http://localhost:7783/admin -d '{
  "action": "restart_kdf",
  "mm2_conf": {
    "gui": "MM2_WASM_RPC_TESTER",
    "mm2": 1,
    "passphrase": "wasmtest1",
    "allow_weak_password": true,
    "rpc_password": "RPC_UserP@SSW0RD",
    "netid": 8762
  },
  "coins_json_url": "https://raw.githubusercontent.com/KomodoPlatform/coins/solana/coins"
}'

Get logs (GET)

/logs endpoint returns the logs in the server's memory, it has a limit query param which determines how many logs will be returned. If no limit is provided, it will return all logs (up to the limit set in the .env file)

curl http://localhost:7783/logs?limit=100

logs are also written to mm2.log ( or the value of MM2_LOG_FILE in the .env file ) file in the root directory and it can be tailed to get the logs in real time

Know status (GET)

curl http://localhost:7783/status