Merge branch 'new-master'

README.md

@@ -15,6 +15,7 @@ To support the different chapters and steps of the tutorial; we use branches to
 - [Add a List All the Notes API](../../tree/add-a-list-all-the-notes-api)
 - [Add an Update Note API](../../tree/add-an-update-note-api)
 - [Add a Delete Note API](../../tree/add-a-delete-note-api)
+- [Unit Tests in Serverless](../../tree/unit-tests-in-serverless)
 
 #### Usage
 
@@ -59,6 +60,6 @@ $ serverless deploy
 
 #### Maintainers
 
-Serverless Stack is authored and maintained by Frank Wang ([@fanjiewang](https://twitter.com/fanjiewang)) & Jay V ([@jayair](https://twitter.com/jayair)). [**Subscribe to our newsletter**](http://eepurl.com/cEaBlf) for updates on Serverless Stack. Send us an [email][Email] if you have any questions.
+Serverless Stack is authored and maintained by Frank Wang ([@fanjiewang](https://twitter.com/fanjiewang)) & Jay V ([@jayair](https://twitter.com/jayair)). [**Subscribe to our newsletter**](https://emailoctopus.com/lists/1c11b9a8-1500-11e8-a3c9-06b79b628af2/forms/subscribe) for updates on Serverless Stack. Send us an [email][Email] if you have any questions.
 
 [Email]: mailto:contact@anoma.ly

billing.js

@@ -0,0 +1,24 @@
+import stripePackage from "stripe";
+import { calculateCost } from "./libs/billing-lib";
+import { success, failure } from "./libs/response-lib";
+
+export async function main(event, context, callback) {
+  const { storage, source } = JSON.parse(event.body);
+  const amount = calculateCost(storage);
+  const description = "Scratch charge";
+
+  // Load our secret key from the  environment variables
+  const stripe = stripePackage(process.env.stripeSecretKey);
+
+  try {
+    await stripe.charges.create({
+      source,
+      amount,
+      description,
+      currency: "usd"
+    });
+    callback(null, success({ status: true }));
+  } catch (e) {
+    callback(null, failure({ message: e.message }));
+  }
+}

create.js

@@ -5,7 +5,7 @@ import { success, failure } from "./libs/response-lib";
 export async function main(event, context, callback) {
   const data = JSON.parse(event.body);
   const params = {
-    TableName: "notes",
+    TableName: process.env.tableName,
     Item: {
       userId: event.requestContext.identity.cognitoIdentityId,
       noteId: uuid.v1(),

delete.js

@@ -3,7 +3,7 @@ import { success, failure } from "./libs/response-lib";
 
 export async function main(event, context, callback) {
   const params = {
-    TableName: "notes",
+    TableName: process.env.tableName,
     // 'Key' defines the partition key and sort key of the item to be removed
     // - 'userId': Identity Pool identity id of the authenticated user
     // - 'noteId': path parameter

get.js

@@ -3,7 +3,7 @@ import { success, failure } from "./libs/response-lib";
 
 export async function main(event, context, callback) {
   const params = {
-    TableName: "notes",
+    TableName: process.env.tableName,
     // 'Key' defines the partition key and sort key of the item to be retrieved
     // - 'userId': Identity Pool identity id of the authenticated user
     // - 'noteId': path parameter

libs/billing-lib.js

@@ -0,0 +1,9 @@
+export function calculateCost(storage) {
+  const rate = storage <= 10
+    ? 4
+    : storage <= 100
+      ? 2
+      : 1;
+
+  return rate * storage * 100;
+}

list.js

@@ -3,7 +3,7 @@ import { success, failure } from "./libs/response-lib";
 
 export async function main(event, context, callback) {
   const params = {
-    TableName: "notes",
+    TableName: process.env.tableName,
     // 'KeyConditionExpression' defines the condition for the query
     // - 'userId = :userId': only return items with matching 'userId'
     //   partition key

mocks/billing-event.json

@@ -0,0 +1,8 @@
+{
+  "body": "{\"source\":\"tok_visa\",\"storage\":21}",
+  "requestContext": {
+    "identity": {
+      "cognitoIdentityId": "USER-SUB-1234"
+    }
+  }
+}