[slf4j-dev] OSGi support in slf4j

[Heiko Seeberger]

Folks,

My first shot at OSGi work for slf4j-api can be taken from here (not yet
ready for pulling into the main repo):
http://github.com/weiglewilczek/slf4j/tree/osgi

Now the Felix Bundle plugin creates the manifest. It looks like below (not
the plain manifest, but the output of analyzing with BND). As you can see
all the issues I recently brought up are addressed, e.g. naming convention
for Bundle-Symbolicname, execution environment bumped up to 1.4, etc.

As all the logging backends are fragments I excluded org.slf4j.impl package
from imported packages. This means you can install the slf4j-api bundle in
an OSGi container successfully without a backend. Not sure whether this is
what we want.

Very important: The whole build still succeeds.

What do you think? Can we proceed this way?

Heiko


slf4j$ bnd print slf4j-api/target/slf4j-api-1.6.2-SNAPSHOT.jar
+++ Starting BND +++
[MANIFEST slf4j-api-1.6.2-SNAPSHOT.jar]
Bnd-LastModified                        1284623539661

Build-Jdk                               1.6.0_20

Built-By                                hseeberger

Bundle-Description                      The slf4j API

Bundle-DocURL                           http://www.qos.ch

Bundle-License
http://www.opensource.org/licenses/mit-license.php
Bundle-ManifestVersion                  2

Bundle-Name                             SLF4J API Module

Bundle-RequiredExecutionEnvironment     J2SE-1.4

Bundle-SymbolicName                     org.slf4j.api

Bundle-Vendor                           QOS.ch

Bundle-Version                          1.6.2.SNAPSHOT

Created-By                              Apache Maven Bundle Plugin

Export-Package
 org.slf4j.spi;uses:="org.slf4j";version="1.6.2.SNAPSHOT",org.slf4j.helpers;uses:="org.slf4j.spi,org.slf4j";version="1.6.2.SNAPSHOT",org.slf4j;uses:="org.slf4j.helpers,org.slf4j.spi";version="1.6.2.SNAPSHOT"
Ignore-Package                          org.slf4j.impl

Implementation-Title                    slf4j-api

Import-Package
 org.slf4j;version="[1.6.2.SNAPSHOT,1.7)",org.slf4j.helpers;version="[1.6.2.SNAPSHOT,1.7)",org.slf4j.spi;version="[1.6.2.SNAPSHOT,1.7)"
Manifest-Version                        1.0

Tool                                    Bnd-0.0.357


[IMPEXP]
Export-Package
  org.slf4j                             {version=1.6.2.SNAPSHOT}
  org.slf4j.helpers                     {version=1.6.2.SNAPSHOT}
  org.slf4j.spi                         {version=1.6.2.SNAPSHOT}

[USES]
org.slf4j                               org.slf4j.helpers
                                        org.slf4j.impl
                                        org.slf4j.spi
org.slf4j.helpers                       org.slf4j
                                        org.slf4j.spi
org.slf4j.spi                           org.slf4j
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