David Handermann created NIFI-12266:
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Summary: Add Standard Shared NAR for Common Dependencies
Key: NIFI-12266
URL: https://issues.apache.org/jira/browse/NIFI-12266
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions
Reporter: David Handermann
Assignee: David Handermann
Fix For: 2.latest
Numerous extension components share a small number of similar libraries. With
selective version management in the root Maven configuration, these common
dependencies have the same version when bundled into various NAR files. The
current packaging structure has most extension NAR files depending on
{{{}nifi-standard-services-api-nar{}}}, which is scoped to common service API
modules that do not have additional dependencies.
Introducing a new intermediate NAR to package common versions of several shared
dependencies would provide a notable size reduction for binary builds. A new
standard shared NAR should contain a limited set a dependencies that are
broadly applicable to extension components, which will allow these components
to set shared dependencies with the {{provided}} scope, avoiding direct
inclusion in the extension NAR.
The standard shared NAR should depend on
{{{}nifi-standard-services-api-nar{}}}, allowing components to opt out of the
standard shared dependency version if absolutely necessary.
The following libraries are good candidates for inclusion in a standard shared
NAR based on the number of references and the sizes of the dependencies:
* Apache Commons libraries such as commons-lang3 and commons-io
* Jackson JSON
* Bouncy Castle
* Netty 4
* OkHttp with Kotlin
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