💡 [Feature Request] Migrate from Jackson 2 to Jackson 3

[yvasyliev]

Note

This issue was originally created to migrate to Jackson 3 AND Spring Boot 4. Now it's only about Jackson 3 migration. Due to complexity of migration, Spring Boot 4 will be covered in a separate issue.

Is your feature request related to a problem? Please describe.

Jackson 3 has recently released brining some breaking changes. It has severe collisions with existing Jackson 2. Moving forward we need to follow the Jackson 3 Migration Guide to keep up with the latest updates.

Describe the solution you'd like

I would expect the TelegramBots to upgrade the Jackson 2 dependencies to Jackson 3. The dependencies introduce breaking changes, so code adjustments are needed too.

Describe alternatives you've considered

While Jackson 2 is still maintained, it's a matter of time when it reaches EOL. It's better to start putting some effort to migrate to Jackson 3.

Additional context

Migration to Jackson 3 will allow us to streamline the migration to Spring boot 4 which will be covered in a separate issue. I plan to see if I can contribute to this change. Just updating import names won't be enough since new versions bring new configurations. Thus, complete regression will be required.

[yvasyliev]

It seems that telegrambots-meta relies on Lombok's @Jacksonized which is not ready for Jackson 3 yet - projectlombok/lombok#3950

[yvasyliev]

Just a heads up - I started working on Jackson 2 to Jackson 3 migration via #1571. Lombok team has released an edge-SNAPSHOT artifact with Jackson 3 support.

Javalin project relies on Jackson 2 out-of-the-box and doesn't offer Jackson 3 adaptation, so we'll have to adapt it by ourselves. Impacts telegrambots-webhook module.

[yvasyliev]

I will reformat this feature request to be about migration to Jackson 3 only. Spring Boot 4 migration will be covered in a separate issue.

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Regarding Javalin issue I mentioned above - I suggest waiting till Javalin introduces Jackson 3 native support. Hope it will be released soon - javalin/javalin#2526

[yvasyliev]

A few updates:

• Lombok team has added support for Jackson 3 in v1.18.44
• Javalin project will add support for Jackson 3 in the next release: 💡 Feature Request: introduce Jackson 3-compatible io.javalin.json.JavalinJackson implementation javalin/javalin#2526
• 💡 [Feature Request] Migrate from Javalin 6 and Javalin 7 #1574 must be closed before this issue