Sui Blockchain Programming: Get the Gas Fee via NodeJs/Javascript Function

In the world of blockchain development, understanding and managing gas fees is crucial for optimizing transactions. Sui, being a relatively new but powerful blockchain platform, has its own way of handling gas prices. Let’s dive into how you can fetch the gas price for Sui using Node.js and JavaScript.

Understanding Gas in Sui

Gas in blockchain contexts refers to the fee required to perform transactions or execute smart contracts. In Sui, gas is measured in MIST, where 1 SUI equals 10^9 MIST. This means gas prices are often quoted in MIST per transaction or operation.

Fetching Gas Price

Here’s a simple asynchronous function to get the current gas price from a Sui node:

const QUICKNODE_URL = "https://sui-mainnet-endpoint.blockvision.org"; // you can use your own node.

async function getGasPrice() {
    try {
      const response = await axios.post(QUICKNODE_URL, {
        method: "suix_getReferenceGasPrice",
        jsonrpc: "2.0",
        id: 1,
        params: [],
      });
      return parseFloat(response.data.result);
    } catch (error) {
      console.error("Error fetching gas price:", error);
      return null;
    }
}

Breakdown of the Code

• axios.post: We use axios to make an HTTP POST request to a Sui RPC node (assuming QUICKNODE_URL is defined elsewhere with the correct URL).
• Method and JSON-RPC: The method suix_getReferenceGasPrice is used to query the gas price. JSON-RPC 2.0 protocol is employed for communication.
• Error Handling: If there’s an error fetching the gas price, it’s logged, and null is returned to indicate failure.

Using the Function

You can call this function within an async context:

(async () => {
  const gasPrice = await getGasPrice();
  if (gasPrice !== null) {
    console.log(`Current gas price: ${gasPrice} MIST`);
  } else {
    console.log("Failed to get gas price.");
  }
})();

Important Notes:

• MIST: The gas price returned is in MIST. For practical purposes, you might want to convert this to SUI for readability, using gasPrice / 10^9.
• QuickNode URL: You would need to replace QUICKNODE_URL with your actual RPC node URL. If you’re not using QuickNode, you can connect to any Sui node supporting this RPC method.
• Asynchronous Nature: Remember, blockchain interactions are inherently asynchronous, hence the use of async/await for handling promises.

Conclusion of Getting Gas Fee/Price in Sui Blockchain

Fetching the gas price in Sui using Node.js is straightforward but requires understanding the nuances of blockchain gas mechanics and JSON-RPC communications. This snippet can serve as a starting point for developers looking to integrate gas price checks into their Sui blockchain applications, ensuring they can manage transaction costs effectively.

Sui Blockchain

• Sui Blockchain Programming: Get the Gas Fee via NodeJs/Javascript Function
• NodeJs/Javascript Function to Get the Latest Block Number (Height) on the Sui Blockchain

–EOF (The Ultimate Computing & Technology Blog) —