License route /licenseState not working in Ignition 8.3

Module Development
1

Hi everyone,

In previous versions of Ignition, I used to read the license state from this URL:

http://localhost:8088/main/data/my-module/licenseState

with the following code in my module:

@Override
public void mountRouteHandlers(RouteGroup routes) {
    routes.newRoute("/licenseState")
          .type("application/json")
          .handler(this::fetchLicenseState)
          .mount();
}

After upgrading to Ignition 8.3, this URL no longer works (returns 404).

  • Has anyone else encountered this change in the route paths for custom modules in 8.3?
  • Is there a new recommended way to expose module license state via HTTP in 8.3?

Any guidance would be greatly appreciated!

Thanks!

2

The problem is likely the implicit main/ - that redirect was deprecated since 8.0, and finally removed in 8.3.

Try just localhost:8088/data/my-module/licenseState.

3

Thanks for the tip! I tried accessing http://localhost:8088/data/my-module/licenseState, but I still get a 404 Not Found error.

4

Based on the code you posted it would be http://localhost:8088/data/my-module/component/licenseState

1 Like
5

I had mistakenly put /component in the path and I've fixed it now. Thanks for pointing it out!

6

Could this be an unresolved bug in Ignition 8.3

7

Probably not, practically every Ignition module that has a route uses the same API.

Does your module hook override getMountPathAlias to return "my-module", or if not, are you sure you're using the module id where "my-module" would go? Have you added logging to verify your mountRouteHandlers is running?

8

Ahh, add either:

.accessControl(AccessControlStrategy.OPEN_ROUTE)

or

.requirePermission(PermissionType.READ)

while building the route.

1 Like
9

Thanks a lot! Adding .accessControl(AccessControlStrategy.OPEN_ROUTE) fixed the issue. Really appreciate your help!