SimpleBatchConfig not picking up my DefaultBatchConfigurer - spring-batch

Question

I wrote a simple demo to overwrite default jobrepo. Instead of map based I wanted a H2 db to hold persistent metadata.
Therefore I wrote a CustomBatchConfigurer like this:
#Configuration
public class CustomBatchConfigurer extends DefaultBatchConfigurer {
#Autowired
#Qualifier("repo-db")
DataSource dataSource;
#Override
public void setDataSource(DataSource dataSource) {
super.setDataSource(dataSource);
}
#Bean(name = "repo-db")
public DataSource getJobRepoDataSource() {
return DataSourceBuilder
.create()
.url("jdbc:h2:tcp://localhost/~/src/spring-batch/batch_repo")
.driverClassName("org.h2.Driver")
.username("sa")
.password("test")
.type(HikariDataSource.class)
.build();
}
}
But Spring-Batch is not picking it up:
o.s.b.c.c.a.DefaultBatchConfigurer: No datasource was provided...using a Map based JobRepository
What am I doing wrong? I thought I had followed the instructions on spring doc ref.
Thanks and regards,
Jörg

Answer 1

You configuration should look more like this:
#Configuration
public class CustomBatchConfiguration {
#Bean
public BatchConfigurer batchConfigurer(#Qualifier("repo-db") DataSource dataSource) {
return new DefaultBatchConfigurer(dataSource);
}
#Bean(name = "repo-db")
public DataSource jobRepoDataSource() {
return DataSourceBuilder
.create()
.url("jdbc:h2:tcp://localhost/~/src/spring-batch/batch_repo")
.driverClassName("org.h2.Driver")
.username("sa")
.password("test")
.type(HikariDataSource.class)
.build();
}
}
If your bean methods are proxied (which is the default), you can also simplify the first bean method to
#Bean
public BatchConfigurer batchConfigurer() {
return new DefaultBatchConfigurer(jobRepoDataSource());
}
Please also have a second look at the official documentation: https://docs.spring.io/spring-batch/docs/4.3.x/reference/html/job.html#javaConfig