add faucet script

subnet/deployment-generator/src/faucet.js

@@ -0,0 +1,73 @@
+process.chdir(__dirname);
+const fs = require("fs");
+const ethers = require("ethers");
+const path = require("path");
+const { error } = require("console");
+
+const usage =
+  "Usage: SUBNET_URL=<subnet_url> node faucet.js <from wallet pk> <to wallet pubkey> <token amount>";
+const subnetURL = process.env.SUBNET_URL || "";
+if (subnetURL == "") {
+  console.log("Invalid SUBNET_URL");
+  console.log(usage);
+  process.exit();
+}
+console.log("RPC url:", subnetURL)
+
+const inputs = process.argv;
+
+processTransfer(inputs);
+
+async function processTransfer(inputs) {
+  try {
+    fromPK = inputs[2];
+    toAddress = inputs[3];
+    amount = inputs[4];
+    const provider = new ethers.JsonRpcProvider(subnetURL);
+    const fromWallet = new ethers.Wallet(fromPK, provider);
+    let tx = {
+      to: toAddress,
+      value: ethers.parseEther(amount),
+    };
+    let sendPromise = fromWallet.sendTransaction(tx);
+    txHash = await sendPromise.then((tx) => {
+      return tx.hash;
+    });
+    console.log("TX submitted, confirming TX execution, txhash:", txHash)
+
+    let receipt;
+    let count = 0;
+    while (!receipt) {
+      count++;
+      // console.log("tx receipt check loop", count);
+      if (count > 60) {
+        throw Error("Timeout: transaction did not execute after 60 seconds");
+      }
+      await sleep(1000);
+      let receipt = await provider.getTransactionReceipt(txHash);
+      if (receipt && receipt.status == 1) {
+        console.log(
+          "Successfully transferred",
+          amount,
+          "subnet token"
+        );
+        let fromBalance = await provider.getBalance(fromWallet.address);
+        fromBalance = ethers.formatEther(fromBalance);
+        let toBalance = await provider.getBalance(toAddress);
+        toBalance = ethers.formatEther(toBalance);
+        console.log("Current balance");
+        console.log(fromWallet.address + ":", fromBalance);
+        console.log(toAddress + ":", toBalance);
+        process.exit();
+      }
+    }
+  } catch (error) {
+    console.log(error);
+    console.log(usage);
+    process.exit();
+  }
+}
+
+function sleep(ms) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}