The Spring datasource url parameter is not written in System properties (works only locally)

[regrog]

Type: Bug

Component: Parameter Store
io.awspring.cloud:spring-cloud-aws-starter-parameter-store version 3.2.1

Describe the bug
I'm importing my params from the store:

(DeferredLog.java:251) - Bean of type AwsClientConfigurerParameterStore is not registered: io.awspring.cloud.autoconfigure.config.parameterstore.AwsParameterStoreClientCustomizer has not been registered
(DeferredLog.java:252) - Loading property from AWS Parameter Store with name: /config/my-app_stag/, optional: false
(DeferredLog.java:251) - Populating property retrieved from AWS Parameter Store: spring.datasource.password
(DeferredLog.java:251) - Populating property retrieved from AWS Parameter Store: spring.datasource.url
(DeferredLog.java:251) - Populating property retrieved from AWS Parameter Store: spring.datasource.username

Params:

/config/my-app_stag/spring/datasource/url
/config/my-app_stag/spring/datasource/password
/config/my-app_stag/spring/datasource/username

My problem is that testing locally the System property values are correctly evaluated from the parameter store. example:

spring.datasource.url=jdbc:mysql://my_db

But when I deploy my app to ECS, reading url (and others) value from System.property result in empty string:

spring.datasource.url=

The result is that the hikari DataSource class initialization fails because there is no DB url.
This is the way I create the datasource:

	@Primary
	@ConfigurationProperties("spring.datasource")
	public DataSourceProperties dataSourceProperties() {
		return new DataSourceProperties();
	}

	@Bean(name = "hikariDataSource")
	@ConfigurationProperties(prefix = "spring.datasource.hikari") // set hikari specific properties
	public HikariDataSource hikariDataSource(final DataSourceProperties properties) {
		return properties.initializeDataSourceBuilder().type(HikariDataSource.class).build();
	}

	@Bean(name = "dataSource")
	@Primary
	public DataSource dataSource(final HikariDataSource hikariDataSource) {
		return hikariDataSource;
	}

***************************
APPLICATION FAILED TO START
***************************
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine suitable jdbc url

Is it something related to order initialization?
Or something related?
I can't figure out what to do with this problem.

Thanks

[regrog]

After days of debug I found the problem.
It's related to spring profile and the various application.yaml.

I'm working with 2 profiles:

• local for local execution
• stag for test and deploy in AWS

mail application.yml:

spring:
  datasource:
    url: url_to_db
    username: foo
    password: bar

application-local.yml:
does not contains any spring parameters, it's everything in the main file

application-stag.yml:

spring:
  datasource:
    url:
    username:
    password:

As you can see in application-stag.yml I have empty properties, they are just a placeholder.

So when I run the app locally, the datasource url is retrieved and replaced from the param store.
BUT when I run the app in AWS the application file for the stag profile overrides the freshly read parameter from the store.
Deleting the placeholders in application-stag.yml did the trick, but I think this isn't good.

Could be related to this issue: #1110