Define Datasource validation in Thorntail - database

Question

In WildFly standalone configuration we can define a validation query in the datasource. In case the DB connection is lost, after the background validation milliseconds defined, the connection can be recovered. Without this validation if the connection is lost, it will not be recovered until the application is restarted.
<datasource jndi-name="java:jboss/datasources/MyDS" pool-name="MyDS" enabled="true" use-java-context="true">
<connection-url>jdbc:postgresql://localhost:5432/myDB</connection-url>
<driver>postgresql</driver>
<security>
<user-name>dbuser</user-name>
<password>password</password>
</security>
<validation>
<check-valid-connection-sql>select 1</check-valid-connection-sql>
<validate-on-match>false</validate-on-match>
<background-validation>true</background-validation>
<background-validation-millis>30000</background-validation-millis>
</validation>
</datasource>
How can I achieve the same in Thorntail project.yml file?
thorntail:
datasources:
data-sources:
MyDS:
driver-name: postgresql
connection-url: jdbc:postgresql://localhost:5432/myDB
user-name: dbuser
password: password
I tried adding a validation node, but it didn't work
validation:
check-valid-connection-sql: select 1
validate-on-match: false
background-validation: true
background-validation-millis: 30000

Answer 1

Here's an example PostgreSQL datasource taken from this documentation: https://docs.thorntail.io/2.7.0.Final/#_example_datasource_definitions It includes connection validation, too.
thorntail:
datasources:
data-sources:
MyDS:
driver-name: postgresql
connection-url: jdbc:postgresql://localhost:5432/postgresdb
user-name: admin
password: admin
valid-connection-checker-class-name: org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLValidConnectionChecker
validate-on-match: true
background-validation: false
exception-sorter-class-name: org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLExceptionSorter
Other connection validation options, including those that you use, are described in the same documentation.