docs(server-webflux): updating gateway actuator documentation as per …

[03hjain]

…issue raised

Fixes gh-3246

Link : #3246

Signed-off-by: Himanshu Jain <03hjain@gmail.com>

[ryanjbaxter]

There are a lot of changed here that make it hard to pick out which ones are related to the issue this is trying to solve. Can you comment on the specific changes that address the issue so we know where to focus our attention. In addition some changes seem unnecessary (like spaces) can you remove those?

[03hjain]

Hi @ryanjbaxter, thanks for the review..Here's where the key changes are:

1. GET /routes example — the original showed internal Java Lambda class strings that users never actually see. Updated it to show the real verbose output (the default), and fixed the table to match.
2. GET /routes/{id} — added the missing intro sentence and a note explaining that the response format is different from what you need to send in a POST — this was a core part of the confusion in the issue. Also fixed the table which incorrectly listed predicates as an Array when it's actually a single predicate string.
3. "Creating and Deleting" section — this is the main fix for the issue:

• Added a warning that trying to delete a config-defined route silently returns 200 OK without actually doing anything
• Added a working POST body example — the original just pointed to the GET response format which doesn't work for POST at all
• Added a warning about a bug where POSTing to an existing route ID duplicates it and causes a 500 on the next GET /routes
• Added the delete then recreate steps as the correct way to update a route

4. Recap table — updated the POST and DELETE descriptions to reflect the above.

NOTE: I am cleaning up and fixing the commit to avoid any other changes which is not listed above. Will be pushing now. Thanks

[ryanjbaxter]

The right property is spring.cloud.gateway.server.webflux.actuator.verbose.enabled

[03hjain]

Oh. Looks like I referred wrong page link https://docs.spring.io/spring-cloud-gateway/reference/spring-cloud-gateway-server-webflux/actuator-api.html , Let me double check and fix.