Java Reactive Application using Spring Webflux - DynamoDB - AWS CLI - Reactor among other stacks

O projeto é requisito para conclusão do Bootcamp TQI na Digital Innovation One

Stack

• Java8
• Spring webflux
• Spring data
• Dynamodb
• Junit
• sl4j
• Reactor

API Documentation

https://app.swaggerhub.com/apis-docs/edabruzzo/default-title/0.1

http://localhost:8080/webjars/swagger-ui/index.html?configUrl=/v3/api-docs/swagger-config

HEROES REACTIVE WEBFLUX API

Reactive API using WebFlux, DynamoDB, AWS CLI, REACTOR, Spring Framework

GET -> Get Hero By ID

curl --location --request GET 'localhost:8080/heroes/4'

POST -> Create new HERO on DynamoDB

curl --location --request POST 'localhost:8080/heroes/' \
--header 'Content-Type: application/json' \
--data-raw '{
"id":"2",
"name":"Genoveva",
"universe":"Encantado",
"countFilmes":10
}'

GET ALL Heroes

curl --location --request GET 'localhost:8080/heroes'

DELETE RESOURCE BY ID

curl --location --request DELETE 'localhost:8080/heroes/2'

PUT -> UPDATE HERO BY ID

curl --location --request PUT 'localhost:8080/heroes/4' \   
--header 'Content-Type: application/json' \
--data-raw '{
"id": "4",
"name":"Amélia",
"universe":"All",
"countFilms":4  
}'

Reading - Reactive Manifesto

• https://www.reactivemanifesto.org/

Commands

DynamoDB

docker pull amazon/dynamodb-local
docker run -p 8000:8000 amazon/dynamodb-local

Docker Compose

On project root dir run:

emmanuel@computer:~/NetBeansProjects/DigitalOne_2/SPRING_WEBFLUX_API_HEROES_EMM/WebFluxReactiveAPI$ sudo docker-compose up -d dynamodb-local
[sudo] password for emmanuel:
WARNING: The Docker Engine you're using is running in swarm mode.

Compose does not use swarm mode to deploy services to multiple nodes in a swarm. All containers will be scheduled on the current node.

To deploy your application across the swarm, use `docker stack deploy`.

Creating network "webfluxreactiveapi_default" with the default driver
Creating dynamodb-local ... done

Connect to DynamoDB Local programmatically

AWS-CLI

After getting your local DyanamoDB instance successfully set up, now you should be able to see it running on http://localhost:8000 . We can pass this address to AWS-CLI or AWS-SDK as our preferred DynamoDB endpoint URL and start accessing it.

$ aws dynamodb <command> --endpoint-url http://localhost:8000

JAVA

DynamoDbClient client = DynamoDbClient.builder()
                        .region(Region.US_WEST_2)
                        .endpointOverride(
                        URI.create("http://localhost:8000"))
                        .build();

Python3

Python (Boto3)
import boto3# Get the service client
db = boto3.client('dynamodb',endpoint_url='http://localhost:8000')# Get the service resource
db = boto3.resource('dynamodb',endpoint_url='http://localhost:8000')

NPM NODE

$ npm install -g dynamodb-admin

// For Windows
set DYNAMO_ENDPOINT=http://localhost:8000

dynamodb-admin// For Mac/Linux
export DYNAMO_ENDPOINT=http://localhost:8000 

$ dynamodb-admin

Now visit http://localhost:8001 on your web browser to access the dynamodb-admin GUI.

Reference links:

Project tutorial by Kamilah Santos

• https://speakerdeck.com/kamilahsantos/live-coding-dio-api-de-herois-com-spring-webflux

  Baeldung

• https://www.baeldung.com/spring-data-dynamodb

• https://github.com/eugenp/tutorials/blob/master/spring-5-reactive-security/src/main/java/com/baeldung/webflux/EmployeeWebClient.java

• https://www.baeldung.com/spring-webflux

• https://github.com/eugenp/tutorials/blob/master/spring-5-reactive-security/src/main/java/com/baeldung/webflux/EmployeeWebClient.java

• https://spring.io/guides/gs/reactive-rest-service/

  AWS CLI

• https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html

  DynamoDB

• https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html

  Swagger

  Documentacao gerada pela aplicação: swagger: 
  

• http://localhost:8080/swagger-ui-heroes-reactive-api.html

  Docker Compose

• https://medium.com/platform-engineer/running-aws-dynamodb-local-with-docker-compose-6f75850aba1e

  Discussons about Reactive Non Blocked Applications

• https://medium.com/@nithinmallya4/processing-streaming-data-with-spring-webflux-ed0fc68a14de

  Testing Webflux Reactive Applications

• https://stackoverflow.com/questions/60611730/properly-ways-to-testing-webflux-rest-api

• https://howtodoinjava.com/spring-webflux/webfluxtest-with-webtestclient/