Generate test application with pgvector and spring-ai if pgvector is selected

[eddumelendez]

pgvector/pgvector image is based on postgres image but doesn't provide latest tag.

[eddumelendez]

Depends on spring-io/initializr#1512 and testcontainers/testcontainers-java#8401

[mhalbritter]

spring-io/initializr#1512 is merged :)

[eddumelendez]

looks like it depends on initializr release to compile. I wonder if once it compiles this can be available, it will be safe because the testcontainers support is under a condition and compose will just work. Both PRs mentioned here were merged. Otherwise, those are the steps to make this available:

• Release initializr and bump the dependency in start.spring.io
• Release Testcontainers 1.19.7
• Bump Testcontainers dependency in Spring Boot
• Release Spring Boot 3.2.4
• Merge this PR

[mhalbritter]

We don't need to release initialzr, as start.spring.io uses the snapshot dependency of it.

So, this PR adds code which starts a PGvector testcontainer / docker compose service. But there's nothing in Spring AI which reacts to those services, right? So while this is nice for users, they still need to provide some application properties to get this running out of the box.

@markpollack What do you think of adding service connection support to Spring AI for such cases?

[eddumelendez]

@mhalbritter PGVector support in spring-ai depends on JdbcTemplateAutoconfiguration. So, I think it should be already covered with this PR.

We are discussing support for other vector databases in spring-projects/spring-ai#151

[mhalbritter]

Ah, i missed that. You're using the label to specify the container to be a postgres container, that's why it works.

[eddumelendez]

Testcontainers 1.19.7 has been released and now pgvector can be used as simple as PostgreSQLContainer("pgvector/pgvector:pg16")

[eddumelendez]

Hi @mhalbritter, tasks listed in this comment are done. Looking forward to see this merged :)

[mhalbritter]

Thanks a lot Eddú!