--restart option added to 'yarn migrate:..' in 'ap-contacts'

(#APm-45)

packages/ap-contracts/deploy/0-include-tags-to-migrate-with-rejection-termination.js

@@ -0,0 +1,7 @@
+// Make node.js terminate on unhandled rejections, and run "migrate"
+module.exports = async () => await Promise.resolve();
+module.exports.tags = ["migrate-terminate"];
+module.exports.dependencies = [
+    "_terminate-on-rejections",
+    "migrate"
+];

packages/ap-contracts/deploy/9-terminate-on-unhandled-rejections.js

@@ -0,0 +1,22 @@
+// Starting from v.10.20, node.js supports "--unhandled-rejections=strict" option
+// This script adds similar behaviour for earlier versions
+
+/**
+ * @typedef {import('./1-extend-buidler-env').BuidlerRuntimeEnvironment}
+ * @param {BuidlerRuntimeEnvironment} buidlerRuntime
+ */
+module.exports = async (buidlerRuntime) => {
+    const { deployments: { log }} = buidlerRuntime;
+
+    process.on('unhandledRejection', (err) => {
+        console.error(`${err}`);
+        console.error('An unhandledRejection occurred. Terminating...');
+        process.exit(128);
+    });
+
+    log('--unhandled-rejections=strict emulated');
+
+    await Promise.resolve();
+}
+
+module.exports.tags = ["_terminate-on-rejections"];

packages/ap-contracts/scripts/deploy-contracts.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# Usage:
+# $ deploy-contracts.sh <network [--terminate-on-rejections]>
 
 set -o errexit
 
@@ -11,17 +13,32 @@ grep -Eq '^(ap\-chain|goerli|kovan|rinkeby|ropsten)$' <<< "${network}" || {
   exit 1
 }
 
+# by default, run migration once (do not restart if failed)
+_restart=
+tags="migrate"
+if [ "$2" == "--restart" ]; then
+  # restart migration if an unhandled rejection occurs
+  _restart=yes
+  tags="migrate-terminate"
+fi
+
 echo "Deploying to ${network} ..."
 while test -f "${flag}"; do
-  node --unhandled-rejections=strict --max-old-space-size=4096 node_modules/.bin/buidler deploy \
+
+  node --max-old-space-size=4096 node_modules/.bin/buidler deploy \
     --network "${network}" \
-    --tags migrate \
+    --tags "${tags}" \
     --write true \
   && {
     echo "DONE successfully"
     exit 0
   }
 
+ [ -z "${_restart}" ] && {
+    echo "[!] FAILED"
+    exit 1
+ }
+
   echo "failed. running again ..."
   sleep 10
 done