Upgrade to SpringData MongoDB 3.0 and MongoDB Java Driver 4.0

[christophstrobl]

SpringData MongoDB intends to upgrade to the MongoDB Java Driver 4.0 (sync/reactive) with the Neumann (M1) release. This will be a major upgrade due to breaking changes in the public API of SpringData (see upgrading from 2.x to 3.x for details).

Both, the MongoDB 4.0 drivers as well as SpringData MongoDB 3.0 are currently only available as SNAPSHOT dependencies.

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SpringData MongoDB - 3.0
https://github.com/spring-projects/spring-data-mongodb/tree/3.x

Spring Boot - Mongo Drivers 4.0 (incl. Spring Data MongoDB 3.0)
https://github.com/christophstrobl/spring-boot/tree/mongo-driver-4_0

Spring Session Data MongoDB
https://github.com/spring-projects/spring-session-data-mongodb/tree/mongo-driver-4_0

[wilkinsona]

Thanks, @christophstrobl. This will require some coordination across a few projects to get this into Boot 2.3 (due in April 2020) as it will pull a few projects into that schedule.

I think at least the following projects will be affected:

• Spring Batch (@benas @mminella)
• Spring Integration (@artembilan @garyrussell)
• Spring Session (@vpavic @rwinch)

There may be others that are affected directly or indirectly. Can you and @mp911de please coordinate with the other projects and make sure that everyone has the bandwidth to absorb the breaking changes coming in Neumann and, if necessary, to ship new minors (at least) that are compatible?

[vpavic]

/cc @gregturn Spring Session MongoDB will be affected by this.

[christophstrobl]

@vpavic @gregturn there's already a branch with the required changes (spring-session-data-mongodb/mongo-driver-4_0) for Spring Session MongoDB.

[artembilan]

See spring-projects/spring-integration#3121.

This is going to be one more argument to release Spring Integration 5.3 in time for Spring Boot 2.3.

Thanks for heads up!

[christophstrobl]

Mongo 4.0 (beta1) driver changes are on SD-MongoDB master (3.0) now. I'll update https://github.com/christophstrobl/spring-boot/tree/mongo-driver-4_0 and open a PR.

[snicoll]

Closing in favour of PR #19960

Thanks Christoph!