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Deploy Spring Microservices using Azure Spring starters for Cosmos DB, Redis, Key Vault

Azure Spring Cloud enables you to easily run a Spring Boot based microservices application on Azure.

This quickstart shows you how to deploy an existing Java Spring Cloud application to Azure. When you're finished, you can continue to manage the application via the Azure CLI or switch to using the Azure portal.

What will you experience

You will:

  • Build existing Spring microservices applications
  • Provision azure resources required for the application
  • Run the application locally with Cosmos DB backend, Azure Redis Cache and using Key Vault for storing secrets
  • Open the application

What you will need

Clone and build the repo

Clone the sample app repository

git clone https://github.com/Azure-Samples/azure-spring-boot-samples

Change directory and build the project

cd azure-spring-boot-samples/spring-petclinic-microservices
mvn clean package -DskipTests

This will take a few minutes.

Provision Azure Resources Required to Run This Sample

Authenticate Using the Azure CLI

Terraform must authenticate to Azure to create infrastructure.

In your terminal, use the Azure CLI tool to setup your account permissions locally.

az login

Your browser window will open and you will be prompted to enter your Azure login credentials. After successful authentication, your terminal will display your subscription information. You do not need to save this output as it is saved in your system for Terraform to use.

You have logged in. Now let us find all the subscriptions to which you have access...

[
  {
    "cloudName": "AzureCloud",
    "homeTenantId": "home-Tenant-Id",
    "id": "subscription-id",
    "isDefault": true,
    "managedByTenants": [],
    "name": "Subscription-Name",
    "state": "Enabled",
    "tenantId": "0envbwi39-TenantId",
    "user": {
      "name": "[email protected]",
      "type": "user"
    }
  }
]

If you have more than one subscription, specify the subscription-id you want to use with command below:

az account set --subscription <your-subscription-id>

Provision the Resources

After login Azure CLI with your account, now you can use the terraform script to create Azure Resources.

Run with Bash

# In the root directory of the sample
# Initialize your Terraform configuration
terraform -chdir=./terraform init

# Apply your Terraform Configuration
terraform -chdir=./terraform apply -auto-approve

Run with Powershell

# In the root directory of the sample
# Initialize your Terraform configuration
terraform -chdir=terraform init

# Apply your Terraform Configuration
terraform -chdir=terraform apply -auto-approve

It may take a few minutes to run the script. After successful running, you will see prompt information like below:

azurerm_resource_group.main: Creating...
azurerm_key_vault.kv_account: Creating...
azurerm_redis_cache.redis: Creating...
azurerm_cosmosdb_account.application: Creating...
azurerm_redis_cache.redis: Still creating... 
azurerm_key_vault.kv_account: Still creating... 
azurerm_cosmosdb_account.application: Still creating... 
...
azurerm_cosmosdb_account.application: Still creating...
azurerm_redis_cache.redis: Still creating...
azurerm_key_vault.kv_account: Still creating...
azurerm_key_vault.kv_account: Still creating...
azurerm_redis_cache.redis: Still creating... 
...

Apply complete! Resources: 8 added, 0 changed, 0 destroyed.

Outputs:
...

You can go to Azure portal in your web browser to check the resources you created.

Export Output to Your Local Environment

Run with Bash

Running the command below to export environment values:

source ./terraform/setup_env.sh

Run with Powershell

Running the command below to export environment values:

terraform\setup_env.ps1

make sure keyvault.env file is created at the root of the repo.

Starting services locally with docker-compose

In order to start entire infrastructure using Docker, you have to build images by executing command below from a project root:

mvn clean install -P buildDocker -DskipTests

Once images are ready, you can start them with a single command.

docker-compose up

Containers startup order is coordinated with dockerize script. After starting services it takes a while for API Gateway to be in sync with service registry, so don't be scared of initial Spring Cloud Gateway timeouts.
You can track services availability using Eureka dashboard available by default at http://localhost:8761.

Clean Up Resources

After running the sample, if you don't want to run the sample, remember to destroy the Azure resources you created to avoid unnecessary billing.

The terraform destroy command terminates resources managed by your Terraform project.
To destroy the resources you created.

Run with Bash

az group delete --name $(terraform -chdir=./terraform output -raw resource_group_name) --yes

Run with Powershell

az group delete --name $(terraform -chdir=terraform output -raw resource_group_name) --yes

Understanding the Spring Petclinic application

See the presentation of the Spring Petclinic Framework version

A blog bost introducing the Spring Petclinic Microsevices ( french language)

You can then access petclinic here: http://localhost:8080/

Spring Petclinic Microservices screenshot

Architecture diagram of the Spring Petclinic Microservices with Cosmos DB

Spring Petclinic Microservices architecture

Navigate to the application

The application could be reached at http://localhost:8080

Enabling Spring boot starter for Microsoft Entra ID (Optional)

To secure the Java applications in this sample please follow the Spring Security Microsoft Entra ID tutorial . After setting your Active directory you can enable security on Customers service by uncommenting the relevant Microsoft Entra ID sample code.

Next Steps

In this quickstart, you've deployed an existing Spring microservices app using Azure CLI. To learn more about Spring on Azure, go to:

Credits

This Spring microservices sample is forked from spring-petclinic/spring-petclinic-microservices

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.

When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.