b1nnar / wallet

Setup

Apache Kafka

Download and unzip Apache Kafka 2.7.0 (kafka_2.13-2.7.0.tgz) from https://kafka.apache.org/downloads. Go to Kafka directory and run:

bin/zookeeper-server-start.sh config/zookeeper.properties

then, in another terminal window

bin/kafka-server-start.sh config/server.properties

PostgreSQL

Download and install PostgreSQL 13 from https://www.postgresql.org/download/. Start postgresql and make sure is running on localhost:5434. Make sure password for user postgres is postgres. Create table wallet on database postgres, schema public:

CREATE TABLE wallet
(
id character varying(64)   NOT NULL,
balance      numeric(16,8) NOT NULL,
CONSTRAINT   wallet_pkey   PRIMARY KEY (id)
);

Run Apps

java -jar bin/iron-sheep-wallet-s1-1.0.0-SNAPSHOT-shaded.jar

then, in another terminal window

java -jar bin/iron-sheep-wallet-s2-1.0.0-SNAPSHOT-shaded.jar

HTTP service WADL should be available at http://localhost:8080/application.wadl

Use POSTMAN or something similar to make requests:

GET  http://localhost:8080/wallet/{id}
POST http://localhost:8080/wallet/credit with body {"id": "1", "amount": 99}
POST http://localhost:8080/wallet/debit  with body {"id": "1", "amount": 10}