From 5f57e8ff8ee887c9fad0518c7aa58aaf91cde88e Mon Sep 17 00:00:00 2001
From: Alexander Kolotov <alexandr.kolotov@gmail.com>
Date: Wed, 25 Mar 2020 22:33:35 +0300
Subject: [PATCH] =?UTF-8?q?=D1=81all=20prepareToPOSDAO=20as=20part=20of=20?=
 =?UTF-8?q?upgrade=20home=20bridge=20implementation=20(#392)?=
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---
 package-lock.json                  |  2 +-
 package.json                       |  2 +-
 upgrade/src/upgradeBridgeOnHome.js | 17 ++++++++++++++++-
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 7afb92dd0..696e72568 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "token-bridge-contracts",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 1d57f60c7..1d8129920 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "token-bridge-contracts",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "description": "Bridge",
   "main": "index.js",
   "scripts": {
diff --git a/upgrade/src/upgradeBridgeOnHome.js b/upgrade/src/upgradeBridgeOnHome.js
index 7858674e4..45803b36a 100644
--- a/upgrade/src/upgradeBridgeOnHome.js
+++ b/upgrade/src/upgradeBridgeOnHome.js
@@ -15,6 +15,18 @@ const {
   NEW_IMPLEMENTATION_XDAI_BRIDGE
 } = process.env
 
+const migrationMethodAbi = [
+  {
+    constant: false,
+    inputs: [],
+    name: 'prepareToPOSDAO',
+    outputs: [],
+    payable: false,
+    stateMutability: 'nonpayable',
+    type: 'function'
+  }
+]
+
 const web3 = new Web3(new Web3.providers.HttpProvider(HOME_RPC_URL))
 const { address } = web3.eth.accounts.wallet.add(HOME_PRIVKEY)
 
@@ -26,7 +38,10 @@ const upgradeBridgeOnHome = async () => {
 
     await validatorState(web3, address, multiSigWallet)
 
-    const data = proxy.methods.upgradeTo('4', NEW_IMPLEMENTATION_XDAI_BRIDGE).encodeABI()
+    const bridge = new web3.eth.Contract(migrationMethodAbi, HOME_BRIDGE_ADDRESS)
+    const upgradeData = bridge.methods.prepareToPOSDAO().encodeABI()
+
+    const data = proxy.methods.upgradeToAndCall('4', NEW_IMPLEMENTATION_XDAI_BRIDGE, upgradeData).encodeABI()
 
     await callMultiSigWallet({
       role: ROLE,