neilghosh / spring-microservice-gcp-starter

Starter micro service with code talking to GCP services.

Getting Started

Setup

• Create a GCP Project
• Setup Firestore in the Datastore Mode.
• Create a JSON key for local testing

Build

mvn clean package 

docker build . -t profile-service

Run

java -jar 
brew services start redis
java -jar target/profile-service-0.0.1-SNAPSHOT.jar

Note for running in docker create a service account key with datastore read/write permission and add following lines in the Dockerfile

COPY key.json /key.json
ENV GOOGLE_APPLICATION_CREDENTIALS=/key.json

docker run -p 8080:8080 profile-service

Deploy

gcloud app deploy

API

GET http://localhost:8080/profiles
GET http://localhost:8080/profiles/Ghosh


curl -v -X POST \
-d '{"name":"Ghosh", "country":"India", "birthYear":1991}' \
-H "Content-Type: application/json" \
http://localhost:8080/profiles

Generate Load

ab -p data.txt -T application/json -H  \
"Content-Type: application/json" -c 100 -n 20000 \
https://cloud-on-air-2019.appspot.com/profiles

Clean Up

curl -v -X DELETE  \
http://localhost:8080/profiles

curl -v -X DELETE  \
https://cloud-on-air-2019.appspot.com/profiles

Measure

Add the following to the end of curl command to measure execution time

-w  "\nExecution Time - %{time_starttransfer}\n"

Reference Documentation

For further reference, please consider the following sections:

• Official Apache Maven documentation
• Spring Boot Maven Plugin Reference Guide
• GCP Support

Guides

The following guides illustrate how to use some features concretely:

• GCP Samples

Note

This skeleton of the project was originally generated using the following

curl https://start.spring.io/starter.tgz \
  -d packaging=war \
  -d dependencies=cloud-gcp \
  -d baseDir=profile-service \
  -d bootVersion=2.1.1.RELEASE | tar -xzvf -