├── src
    └── put_item_function.js
└── README.md


/src/put_item_function.js:
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 1 | var AWS = require('aws-sdk');
 2 | const dynamodb = new AWS.DynamoDB.DocumentClient();
 3 | 
 4 | exports.handler = async (event) => {
 5 |     
 6 |     let responseBody = ""
 7 |     let statusCode = 0
 8 |     
 9 |     let {id, price} = JSON.parse(event.body);
10 |     
11 |     const params = {
12 |       TableName : 'Items',
13 |       /* Item properties will depend on your application concerns */
14 |       Item: {
15 |          id: id,
16 |          price: price
17 |       }
18 |     }
19 |     
20 |     try {
21 |         
22 |         await dynamodb.put(params).promise();
23 |         statusCode = 200;
24 |         responseBody = JSON.stringify('Item inserido com sucesso!');
25 |         
26 |     } catch (err) {
27 |           
28 |         statusCode = 200;
29 |         responseBody = JSON.stringify(err);
30 |         
31 |     }
32 |       
33 |     const response = {
34 |         statusCode: statusCode,
35 |         body: responseBody,
36 |     };
37 |     
38 |     return response;
39 | };
40 | 


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/README.md:
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 1 | # Roteiro para o desenvolvimento da atividade prática do DIO Live Coding do dia 17/11/2021
 2 | 
 3 | ## Serviços AWS utilizados
 4 | 
 5 | - Amazon Cognito
 6 | - Amazon DynamoDB
 7 | - Amazon API Gateway
 8 | - AWS Lambda
 9 | 
10 | ## Etapas do desenvolvimento
11 | 
12 | ### Criando uma API REST no Amazon API Gateway
13 | 
14 | - API Gateway Dashboard -> Create API -> REST API -> Build
15 | - Protocol - REST -> Create new API -> API name [dio_live_api] -> Endpoint Type - Regional -> Create API
16 | - Resources -> Actions -> Create Resource -> Resource Name [Items] -> Create Resource
17 | 
18 | ### No Amazon DynamoDB
19 | 
20 | - DynamoDB Dashboard -> Tables -> Create table -> Table name [Items] -> Partition key [id] -> Create table
21 | 
22 | ### No AWS Lambda
23 | 
24 | #### Função para inserir item
25 | 
26 | - Lambda Dashboard -> Create function -> Name [put_item_function] -> Create function
27 | - Inserir código da função ```put_item_function.js``` disponível na pasta ```/src``` -> Deploy
28 | - Configuration -> Execution role -> Abrir a Role no console do IAM
29 | - IAM -> Roles -> Role criada no passo anterior -> Permissions -> Add inline policy
30 | - Service - DynamoDB -> Manual actions -> add actions -> putItem
31 | - Resources -> Add arn -> Selecionar o arn da tabela criada no DynamoDB -> Add
32 | - Review policy -> Name [lambda_dynamodb_putItem_policy] -> Create policy
33 | 
34 | ### Integrando o API Gateway com o Lambda backend
35 | 
36 | - API Gateway Dashboard -> Selecionar a API criada -> Resources -> Selecionar o resource criado -> Action -> Create method - POST
37 | - Integration type -> Lambda function -> Use Lambda Proxy Integration -> Lambda function -> Selecionar a função Lambda criada -> Save
38 | - Actions -> Deploy API -> Deployment Stage -> New Stage [dev] -> Deploy
39 | 
40 | ### No POSTMAN
41 | 
42 | - Add Request -> Method POST -> Copiar o endpoint gerado no API Gateway
43 | - Body -> Raw -> JSON -> Adicionar o seguinte body
44 | ```
45 | {
46 |   "id": "003",
47 |   "price": 600
48 | }
49 | ```
50 | - Send
51 | 
52 | ### No Amazon Cognito
53 | 
54 | - Cognito Dashboard -> Manage User Pools -> Create a User Pool -> Pool name [TestPool]
55 | - How do you want your end users to sign in? - Email address or phone number -> Next Step
56 | - What password strength do you want to require?
57 | - Do you want to enable Multi-Factor Authentication (MFA)? Off -> Next Step
58 | - Do you want to customize your email verification messages? -> Verification type - Link -> Next Step
59 | - Which app clients will have access to this user pool? -> App client name [TestClient] -> Create App Client -> Next Step
60 | - Create Pool
61 | 
62 | - App integration -> App client settings -> Enabled Identity Providers - Cognito User Pool
63 | - Callback URL(s) [https://example.com/logout]
64 | - OAuth 2.0 -> Allowed OAuth Flows - Authorization code grant -Implicit grant
65 | - Allowed OAuth Scopes	- email	- openid
66 | - Save Changes
67 | 
68 | - Domain name -> Domain prefix [diolive] -> Save
69 | 
70 | ### Criando um autorizador do Amazon Cognito para uma API REST no Amazon API Gateway
71 | 
72 | - API Gateway Dashboard -> Selecionar a API criada -> Authorizers -> Create New Authorizer
73 | - Name [CognitoAuth] -> Type - Cognito -> Cognito User Pool [pool criada anteriormente] -> Token Source [Authorization]
74 | 
75 | - Resources -> selecionar o resource criado -> selecionar o método criado -> Method Request -> Authorization - Selecionar o autorizador criado
76 | 
77 | ### No POSTMAN
78 | 
79 | - Add request -> Authorization
80 | - Type - OAuth 2.0
81 | - Callback URL [https://example.com/logout]
82 | - Auth URL [https://diolive.auth.sa-east-1.amazoncognito.com/login]
83 | - Client ID - obter o Client ID do Cognito em App clients
84 | - Scope [email - openid]
85 | - Client Authentication [Send client credentials in body]
86 | - Get New Acces Token
87 | - Copiar o token gerado
88 | 
89 | - Selecionar a request para inserir item criada -> Authorization -> Type - Bearer Token -> Inserir o token copiado
90 | - Send
91 | 


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