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Feature Management Sample shared library for Java

This sample describes how to use spring-cloud-feature-management to manage features and how to get configurations from App Configuration Service to Spring Environment.

Key concepts

Getting started

azure-spring-cloud-feature-management doesn't require use of the App Configuration service, but can be integrated with it. The next section shows how to use the library without the App Configuration service, the section after shows how to update the example to use it with the App Configuration service.

How to run without App Configuration Service

Start the application and check the resulting console output to check the returned value.

  1. Load features from application.yml
mvn spring-boot:run
  1. Check the returned value. The feature Beta has one filter Random which defines the Beta feature will be activated randomly with some chance value. You should see the following information displayed: RUNNING : application or RUNNING : beta.

How to run with Azure Configuration Service

Prepare data

  1. Create a Configuration Store if not exist.
az appconfig create --resource-group <your-resource-group> --name <name-of-your-new-store> --sku Standard
  1. Import the data file src/main/resources/data/sample-data.json into the Configuration Store created above. Under For language select Other. Under File type select Yaml or using the azure cli:
az appconfig kv import -n <name-of-your-new-store> -s file --path <location-of-your-properties-file> --format properties --prefix /application/

It will have you confirm the feature flag before loading it.

Updating the application

  1. Add the azure-spring-cloud-appconfiguration-config dependency,
<dependency>
    <groupId>com.azure.spring</groupId>
    <artifactId>azure-spring-cloud-appconfiguration-config</artifactId>
    <version>2.3.0</version>
</dependency>
  1. Create a file named bootstrap.properties in the resources folder and add the connection string to it.
spring.cloud.azure.appconfiguration.stores[0].connection-string= <your-connection-string>

Note: You can get your connection string from the portal from Access Keys or using the cli:

az appconfig credential list --resource-group <your-resource-group> --name <name-of-your-new-store>
  1. Delete application.yml.

Run the application

  1. Load features from application.yml
mvn spring-boot:run
  1. Check the returned value. The feature Beta has one filter Random which defines the Beta feature will be activated randomly with some chance value. You should see the following information displayed: RUNNING : application or RUNNING : beta.

More details

Please refer to this README about more usage details.

Examples

Troubleshooting

Next steps

Contributing