Add custom prefix/suffix when bulk importing OOTP apps

[sabbyanandan]

As a user, I'd like to import both RMQ and Kafka apps; while the imports work, but the registration corrupts the pallette when it loads because of the duplicate names/nodes.

See below:

Possible solutions:

• Either we don't allow bulk import of both RMQ and Kafka
• Add an option when importing to prefix/suffix with something extra to the app names
• Highlight the apps with its unique name to avoid conflicts

[oodamien]

The REST endpoint for Bulk Import uses a URL as parameter.
The URL points to a file that contains a list of apps.
We can not, on the UI side, transform the apps list (add a prefix/suffix).

[jvalkeal]

You really can't even register rabbit/kafka apps with same name as it throws

java.lang.IllegalArgumentException:
Existing default application [maven://org.springframework.cloud.stream.app:file-sink-rabbit:3.0.1]
can only differ by a version but is [maven://org.springframework.cloud.stream.app:file-sink-kafka:3.0.1]

Bulk import silently drops apps which doesn't import.

[jvalkeal]

@oodamien that "duplicate element" is logged here

spring-cloud-dataflow-ui/ui/src/app/flo/stream/metamodel.service.ts

Line 91 in c507a20

LoggerService.error(`Group '${item.type}' has duplicate element '${item.name}'`);

if you have sink/source with same name.