From 5033fcd7dcaf400667bff7774fc392c8941b7498 Mon Sep 17 00:00:00 2001
From: Ivan Hernandez <hivanalejandro@google.com>
Date: Mon, 28 Apr 2025 20:13:26 +0000
Subject: [PATCH 1/3] chore(deps): remove deprecated slack package & install
 @slack/bolt

---
 functions/billing/package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/functions/billing/package.json b/functions/billing/package.json
index 0c59d6c3e9..019e501983 100644
--- a/functions/billing/package.json
+++ b/functions/billing/package.json
@@ -16,9 +16,9 @@
   "dependencies": {
     "@google-cloud/billing": "^4.0.0",
     "@google-cloud/compute": "^4.0.0",
+    "@slack/bolt": "^4.2.1",
     "google-auth-library": "^9.0.0",
-    "googleapis": "^143.0.0",
-    "slack": "^11.0.1"
+    "googleapis": "^143.0.0"
   },
   "devDependencies": {
     "@google-cloud/functions-framework": "^3.0.0",

From eeb6164413470ab6d288a462c6a0e6381c3f46f4 Mon Sep 17 00:00:00 2001
From: Ivan Hernandez <hivanalejandro@google.com>
Date: Mon, 28 Apr 2025 20:31:57 +0000
Subject: [PATCH 2/3] refactor(slack): migrate notifySlack function to use
 @slack/bolt

---
 functions/billing/index.js | 27 +++++++++++++++++++--------
 1 file changed, 19 insertions(+), 8 deletions(-)

diff --git a/functions/billing/index.js b/functions/billing/index.js
index 38d3bdfe5a..c34c7121b2 100644
--- a/functions/billing/index.js
+++ b/functions/billing/index.js
@@ -23,13 +23,20 @@ const PROJECT_NAME = `projects/${PROJECT_ID}`;
 // [END functions_billing_limit]
 
 // [START functions_billing_slack]
-const slack = require('slack');
+const {App} = require('@slack/bolt');
 
 // TODO(developer) replace these with your own values
 const BOT_ACCESS_TOKEN =
   process.env.BOT_ACCESS_TOKEN || 'xxxx-111111111111-abcdefghidklmnopq';
+const SLACK_SIGNING_SECRET =
+  process.env.SLACK_SIGNING_SECRET || 'default-signing-secret';
 const CHANNEL = process.env.SLACK_CHANNEL || 'general';
 
+const app = new App({
+  token: BOT_ACCESS_TOKEN,
+  signingSecret: SLACK_SIGNING_SECRET,
+});
+
 exports.notifySlack = async pubsubEvent => {
   const pubsubAttrs = pubsubEvent.attributes;
   const pubsubData = Buffer.from(pubsubEvent.data, 'base64').toString();
@@ -37,13 +44,17 @@ exports.notifySlack = async pubsubEvent => {
     pubsubAttrs
   )}, ${pubsubData}`;
 
-  await slack.chat.postMessage({
-    token: BOT_ACCESS_TOKEN,
-    channel: CHANNEL,
-    text: budgetNotificationText,
-  });
-
-  return 'Slack notification sent successfully';
+  try {
+    await app.client.chat.postMessage({
+      token: BOT_ACCESS_TOKEN,
+      channel: CHANNEL,
+      text: budgetNotificationText,
+    });
+    return 'Slack notification sent successfully';
+  } catch (error) {
+    console.error('Error sending Slack message:', error);
+    throw error;
+  }
 };
 // [END functions_billing_slack]
 

From f8ffb61bb16d169a356b1c14274c1dbbafa47707 Mon Sep 17 00:00:00 2001
From: Ivan Hernandez <hivanalejandro@google.com>
Date: Mon, 28 Apr 2025 20:50:10 +0000
Subject: [PATCH 3/3] fix(slack): replace bolt with web-api to prevent server
 startup issues

---
 functions/billing/index.js     | 12 +++---------
 functions/billing/package.json |  2 +-
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/functions/billing/index.js b/functions/billing/index.js
index c34c7121b2..c99b222e25 100644
--- a/functions/billing/index.js
+++ b/functions/billing/index.js
@@ -23,19 +23,14 @@ const PROJECT_NAME = `projects/${PROJECT_ID}`;
 // [END functions_billing_limit]
 
 // [START functions_billing_slack]
-const {App} = require('@slack/bolt');
+const {WebClient} = require('@slack/web-api');
 
 // TODO(developer) replace these with your own values
 const BOT_ACCESS_TOKEN =
   process.env.BOT_ACCESS_TOKEN || 'xxxx-111111111111-abcdefghidklmnopq';
-const SLACK_SIGNING_SECRET =
-  process.env.SLACK_SIGNING_SECRET || 'default-signing-secret';
 const CHANNEL = process.env.SLACK_CHANNEL || 'general';
 
-const app = new App({
-  token: BOT_ACCESS_TOKEN,
-  signingSecret: SLACK_SIGNING_SECRET,
-});
+const slackClient = new WebClient(BOT_ACCESS_TOKEN);
 
 exports.notifySlack = async pubsubEvent => {
   const pubsubAttrs = pubsubEvent.attributes;
@@ -45,8 +40,7 @@ exports.notifySlack = async pubsubEvent => {
   )}, ${pubsubData}`;
 
   try {
-    await app.client.chat.postMessage({
-      token: BOT_ACCESS_TOKEN,
+    await slackClient.chat.postMessage({
       channel: CHANNEL,
       text: budgetNotificationText,
     });
diff --git a/functions/billing/package.json b/functions/billing/package.json
index 019e501983..7417efc7bc 100644
--- a/functions/billing/package.json
+++ b/functions/billing/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "@google-cloud/billing": "^4.0.0",
     "@google-cloud/compute": "^4.0.0",
-    "@slack/bolt": "^4.2.1",
+    "@slack/web-api": "^7.9.1",
     "google-auth-library": "^9.0.0",
     "googleapis": "^143.0.0"
   },