Spring boot serverless student application with Azure Functions and Event Hub

What are we doing here ?

• Create Azure Components via Terraform (Resource Group, Storage, Azure Functions, Stream Analytics)
• Spring Cloud Stream (Azure Event Hub)
• Register student/application via Stream Analytics upon application approval

What we are not doing here.

• Covering dual writes problem
• Cold start optimization
• Persistent DB Storage (H2 in-memory database)

Prerequisite

• Azure CLI 2.56.0
• Terraform 1.5.7
• Java 17
• Spring Boot 3.2.2
• Maven 3.9.5

Create Azure Resources

# Login to Azure
az login

# Create azure resources
terraform apply

# Deploy Azure Functions
mvn clean install
mvn azure-functions:deploy -pl application
mvn azure-functions:deploy -pl student

# Start streaming jobs
az stream-analytics job start \
  --resource-group student-application-demo \
  --name events-to-table-storage
az stream-analytics job start \
  --resource-group student-application-demo \
  --name register-student-upon-application-approval

Test

curl -X POST https://application-function.azurewebsites.net/api/applications -d '{"firstname": "dan", "surname": "skora", "courseId": 1}'
curl -X GET https://application-function.azurewebsites.net/api/applications/1
curl -X PATCH https://application-function.azurewebsites.net/api/applications/1/status -d '{"status": "approved"}'
curl -X GET https://student-function.azurewebsites.net/api/students/1