GraphQL Spring Server

Simple 'hello world' server application that reads from a RabbitMQ queue and processes the request (ReactJS action) as a GraphQL query, returning the response on a response queue.

Running

• Run the class: com.strengthtailor.StrengthTailorServerApplication (setting the classpath appropariately)

NB: Probably easiest at the moment to just run it through the IntelliJ IDE since it is not current packaged as a jar.

Dependencies

Install and run the RabbitMQ docker image (if not already running) by running the docker script:

#!/bin/bash -e

NAME='rabbitmq'
DATA_ROOT='/opt/docker-containers'
RABBITMQ_DATA="${DATA_ROOT}/${NAME}"

HOST_NAME=rabbitmq
NETWORK_NAME=dev_nw
MSG_PORT=5672
ALT_MSG_PORT=5671
CLUSTER_PORT_1=4369
CLUSTER_PORT_2=25672

mkdir -p "$RABBITMQ_DATA"

docker stop "${NAME}" 2>/dev/null && sleep 1
docker rm "${NAME}" 2>/dev/null && sleep 1
docker run --detach=true --name "${NAME}" --hostname "${HOST_NAME}" \
--volume "${RABBITMQ_DATA}:/var/lib/rabbitmq" \
--network=${NETWORK_NAME} \
-p $MSG_PORT:5672 \
-p $ALT_MSG_PORT:5671 \
-p $CLUSTER_PORT_1:4369 \
-p $CLUSTER_PORT_2:25672 \
rabbitmq:3.6.6

Install and run the PostgreSQL database by running:

#!/bin/bash -e

NAME='postgres'
DATA_ROOT='/opt/docker-containers'
POSTGRES_DATA="${DATA_ROOT}/${NAME}"

HOST_NAME=postgres
NETWORK_NAME=dev_nw
DB_PORT=5432

mkdir -p "$POSTGRES_DATA"

docker stop "${NAME}" 2>/dev/null && sleep 1
docker rm "${NAME}" 2>/dev/null && sleep 1
docker run --detach=true --name "${NAME}" --hostname "${HOST_NAME}" \
--volume "${POSTGRES_DATA}:/var/lib/postgresql/data" \
--network=${NETWORK_NAME} \
-p $DB_PORT:5432 \
postgres:9.6.1

Set the PostGreSQL username/password in the Spring Boot 'application.properties' file and create the same credentials in PostGreSQL.

NB: The Postgres code can also be removed since it is not needed for the purpose of demonstrating or working with GraphQL.

See also: GraphQL ReactJS Client.