vazlucas / challenge-3-compass

Challenge 3 - Compass

TOOLS USED

1. Spring Cloud Gateway
2. Eureka Server
3. RabbitMQ
4. Docker
5. OpenFeign

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HTTP REQUESTS

Use the links below to go to the URLs

Microservice	Name	Http method	Link	Body / Query
user-controller	postNewUser	POST	http://localhost:8080/users	{ "cpf": "valid cpf", "name": "your name"} as json body
user-controller	getUsers	GET	http://localhost:8080/users/{id}	userId (String cpf) as path variable
poll-controller	getPollVoted	GET	http://localhost:8080/polls/voted	-
poll-controller	deletPollById	DELETE	http://localhost:8080/polls/{pollId}	pollId (integer) as path variable
poll-controller	updatePollAsActive	PUT	http://localhost:8080/polls/{pollId}	pollId (integer) as path variable}
poll-controller	postNewPoll	POST	http://localhost:8080/polls	{ "name": "improvement namme", "minutesActive": } as Json body
poll-controller	getPollById	GET	http://localhost:8080/polls/{id}	pollId (integer) as path variable}
poll-controller	getAllPolls	GET	http://localhost:8080/polls/all	-
vote-controller	getVoteByPoll	GET	http://localhost:8080/votes/listByPoll?pollId=	{"pollId" : "pollId"} as query params}
vote-controller	postNewVote	POST	http://localhost:8080/votes?cpf=&pollId=	{ "cpf": "cpf", "pollId": "pollId"} as query params

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MICROSERVICES

Api-gateway

• Establishes routes to each microservices

MS-Eureka-Server

• Registers microservices to be found and used by other microservices

MS-Poll

• Registers a new poll of improvements into the database
• Sets a registered poll as active to receive votes
• Sets a registered and active poll as voted when it finishes
• Returns all polls registered
• Returns all registered polls voted
• Deletes a poll

MS-User

• Registers a new user into the database
• Checks if user information (CPF) is valid
• Returns a registered user

MS-Voting

• Registers new votes into the database
• Uses OpenFeign to request data to Ms-user and Ms-poll

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Usage of dockerfiles and docker-compose.yaml

What is docker

Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure, so you can deliver software quickly. Source

Commands to use after cloning the repository into your machine

• Log into RabbitMQ using 'guest' as username and password
• Then create to regular queues as 'result-publisher-string' and 'result-publisher'
  • Ms-voting uses both as publisher
  • Ms-user uses 'result-publisher-string' as consumer to show what are the results for each poll
  • Ms-poll uses 'result-publisher' as consumer to update poll's result value
• Finally use docker commands

docker compose build

• To download and update the containers

docker compose up

• To run the containers

Dockerfile

Each project has its own Dockerfile containing instructions to build the images

docker-compose.yml

This file sets how each container should act while running with docker

While in development, we decided to use a specific designed by user netowrk to manage communication between the containers, setting fixed IPs to each microservice

Containers

Individual Microservice container

stateDiagram
    HARDWARE --> OS

    state OS {
        DOCKER --> msvoting
        DOCKER --> msuser
        DOCKER --> eureka
        DOCKER --> mspoll
        DOCKER --> gateway


        }
        state mspoll {
            [*] --> javaCoretoAmazonA
            [*] --> alpinelinuxA

        }

        state msuser {
            [*] --> javaCoretoAmazonB
            [*] --> alpinelinuxB

        }
        state msvoting {
            [*] --> javaCoretoAmazonC
            [*] --> alpinelinuxC

        }

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