org.slf4j:slf4j-nop SLF4J binding imposed in mil.nga.geopackage:geopackage

[phanecak-maptiler]

Version Information:

• GeoPackage Java Version: 6.6.5
• GeoPackage Java Source: Mvn Central
• IDE Name & Version: Java 21
• Maven Version: 3.9.1
• Java Version: openjdk version "21.0.2" 2024-01-16
• Platform & OS: Linux
• Other Relevant Libraries: log4j-slf4j2-impl 2.23.1 used in Planetiler project (https://github.com/onthegomap/planetiler)

Expected Results:

log4j-slf4j2-impl to be used as SLF4J binding without warnings

Observed Results:

Warning being printed by Planetiler, see "Output" bellow.

Output:

SLF4J(W): Class path contains multiple SLF4J providers.
SLF4J(W): Found provider [org.apache.logging.slf4j.SLF4JServiceProvider@49097b5d]
SLF4J(W): Found provider [org.slf4j.nop.NOPServiceProvider@6e2c634b]
SLF4J(W): See https://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J(I): Actual provider is of type [org.apache.logging.slf4j.SLF4JServiceProvider@49097b5d]

Steps to Reproduce:

1. Compile current Planetiler/main branch
2. Run it

Relevant Code:

import mil.nga.geopackage.GeoPackage;
...
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
...
private static final Logger LOGGER = LoggerFactory.getLogger(Generate.class);

See for example https://github.com/onthegomap/planetiler/blob/main/planetiler-core/src/main/java/com/onthegomap/planetiler/reader/GeoPackageReader.java

Test Files:

no

Additional Information:

SLF4J suggests:

Embedded components such as libraries or frameworks should not declare a dependency on any SLF4J binding but only depend on slf4j-api. When a library declares a compile-time dependency on a SLF4J binding, it imposes that binding on the end-user, thus negating SLF4J's purpose. When you come across an embedded component declaring a compile-time dependency on any SLF4J binding, please take the time to contact the authors of said component/library and kindly ask them to mend their ways.