springboot quartz init schema only on first startup - spring-boot

Question

This is my config:
#Bean
#QuartzDataSource
#ConfigurationProperties(prefix = "spring.datasource")
public DataSource quartzDataSource() {
return DataSourceBuilder.create().build();
}
and this is my app.yml:
datasource:
url: my-url
jdbcUrl: ${spring.datasource.url}
username: 'root'
password: 'root'
...
quartz:
job-store-type: jdbc
jdbc:
initialize-schema: always
wait-for-jobs-to-complete-on-shutdown: true
properties:
org:
quartz:
dataSource:
quartz-data-source:
provider: hikaricp
driver: com.mysql.cj.jdbc.Driver
URL: ${spring.datasource.url}
user: ${spring.datasource.username}
password: ${spring.datasource.password}
maximumPoolSize: 5
connectionTestQuery: SELECT 1
validationTimeout: 5000
idleTimeout: 1
scheduler:
instanceId: AUTO
instanceName: my-project-scheduler
jobStore:
class: org.quartz.impl.jdbcjobstore.JobStoreTX
driverDelegateClass: org.quartz.impl.jdbcjobstore.StdJDBCDelegate
useProperties: false
misfireThreshold: 60000
clusterCheckinInterval: 30000
isClustered: true
dataSource: quartz-data-source
threadPool:
class: org.quartz.simpl.SimpleThreadPool
threadCount: 1
threadPriority: 5
threadsInheritContextClassLoaderOfInitializingThread: true
My question:
If I set initialize-schema: always then the qrtz tables are created on each application startup.
On the other side, if I set initialize-schema: never then I get an error on the first startup that the qrt tables are missing.
Is there a way to configure it to initialize the qrtz tables only if they do not exist?

Answer 1

You are gonna need a migration tool to handle the database creation.
Spring Boot provides two options: Flyway and LiquidBase.
Choose one, create migration scripts and you are up and running.
I personally like the Flyway approach.
You just add implementation 'org.flywaydb:flyway-core' to your build.gradle file (or the maven alternative).
Then add this to your application.yml
spring:
flyway:
enabled: true
baseline-on-migrate: true
Then create db/migration folder in resources folder and put in your migration scripts eg. V1_0_0__db_init.sql (flyway has its own naming convention).
To get the create SQL scripts I recommend that you export them from running database.
Also do not forget to change the spring.jpa.hibernate.ddl-auto to validate.