refactored watcher; produces logs

abi.js

@@ -1,3 +1,9 @@
+import {readFile} from './misc.js'
+import {ethers} from "ethers";
+
+const ABI_BASE_PATH = '../contract/out'
+
+
 export const erc20Abi = [
     'function name() view returns (string)',
     'function symbol() view returns (string)',
@@ -26,6 +32,7 @@ const TimedOrderSpec = '(' +
     'bool amountIsInput' +
     ')'
 
+
 export const timedOrderAbi = [
     'event TimedOrderCreated (address owner, uint64 index, Spec spec)',
     'event TimedOrderFilled (address owner, uint64 index, uint256 amountIn, uint256 amountOut)',
@@ -35,8 +42,31 @@ export const timedOrderAbi = [
 ]
 
 
+const vaultDeployerAbi = [
+    'function deployVault(address owner) returns (address vault)',
+    'event VaultCreated( address deployer, address owner )',
+]
+
+
 export const abi = {
     'ERC20': erc20Abi,
     'TimedOrder': timedOrderAbi,
+    'VaultDeployer': vaultDeployerAbi,
 }
 
+
+export async function getAbi(className) {
+    let found = abi[className]
+    if (found === undefined) {
+        console.log('warning: loading ABI from filesystem for '+className)
+        const data = await readFile(ABI_BASE_PATH + `/${className}.sol/${className}.json`)
+        found = JSON.parse(data.toString())['abi']
+        abi[className] = found
+    }
+    return found
+}
+
+
+export async function getInterface(className) {
+    return new ethers.Interface(await getAbi(className))
+}