Currency transaction

Currency transaction is a simple project intend to convert an amount of money of some chosen currency to USD. It relies on Open Exchange Rates to get current rate of the chosen currency.

Features

Stack:

• Flask
• SQLAlchemy
• Alembic
• Redis
• Elasticsearch (APM)
• React JS

API's:

This project exposes two API's:

• POST /api/currency-transact
• GET /api/currency-transactions/last?limit=1&currency=USD&page=1
  • Query parameters are optional

For saving and retrieving data respectively.

Installation

On project root execute the following command:

docker-compose up -d

Note: The backend takes almost a minute to boot up in order to guarantee that MySQL is up and running.

This project uses the following ports:

• 5601, 8200, 9200, 5601, 6379, 8080 and 3000.

Those ports must available in order to run the project.

Usage

Curl

Save a transaction:

curl --location --request POST 'http://0.0.0.0:8080/api/currency-transaction' \
--header 'Content-Type: application/json' \
--data-raw '{
    "amount": 0.25567801,
    "currency": "BTC"
}'

Retrieve Nth transaction:

curl --location --request GET 'http://0.0.0.0:8080/api/currency-transactions/last?currency=USD&limit=1&page=1' 

Frontend:

Access http://localhost:3000

Using kibana

In order to see APM error logs it's necessary to configure elastic index, follow the steps bellow:

1. Open kibana (localhost:5601)
2. Click in discovery on left-side menu
3. Kibana will redirect you to index creation.
4. Type in "index pattern" "apm*" and click "next step"
5. Select @timestaamp as date filter, click "create index". Now you're ready to go to discovery.