[
https://issues.apache.org/jira/browse/LOG4J2-346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13748346#comment-13748346
]
Roland Weiglhofer commented on LOG4J2-346:
------------------------------------------
Index: slf4j-impl/pom.xml
===================================================================
--- slf4j-impl/pom.xml (revision 1516372)
+++ slf4j-impl/pom.xml (working copy)
@@ -24,7 +24,7 @@
<relativePath>../</relativePath>
</parent>
<artifactId>log4j-slf4j-impl</artifactId>
- <packaging>jar</packaging>
+ <packaging>bundle</packaging>
<name>Apache Log4j SLF4J Binding</name>
<description>SLF4J API binding to Log4j 2 Core</description>
<properties>
@@ -66,6 +66,22 @@
<build>
<plugins>
<plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <extensions>true</extensions>
+ <inherited>true</inherited>
+ <configuration>
+ <instructions>
+ <Bundle-SymbolicName>${osgi.symbolicName}</Bundle-SymbolicName>
+ <Export-Package>${osgi.export.slf4jbinding}</Export-Package>
+ <Private-Package>${osgi.private}</Private-Package>
+ <Import-Package>${osgi.import}</Import-Package>
+
<DynamicImport-Package>${osgi.dynamicImport}</DynamicImport-Package>
+ <Bundle-DocURL>${project.url}</Bundle-DocURL>
+ </instructions>
+ </configuration>
+ </plugin>
+ <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
Index: pom.xml
===================================================================
--- pom.xml (revision 1516096)
+++ pom.xml (working copy)
@@ -142,6 +142,8 @@
<!-- Configuration properties for the OSGi maven-bundle-plugin -->
<osgi.symbolicName>org.apache.logging.${project.artifactId}</osgi.symbolicName>
<osgi.export>org.apache.logging.log4j.*;version=${project.version};-noimport:=true</osgi.export>
+
<osgi.export.slf4jbinding>org.slf4j.impl;version=1.7.5,org.slf4j.helpers;version=1.7.5,org.apache.logging.slf4j;version=${project.version}</osgi.export.slf4jbinding>
+
<osgi.export.log4j1.2>org.apache.log4j;version=1.2,org.apache.log4j.helpers;version=1.2,org.apache.log4j.config;version=1.2,org.apache.log4j.spi;version=1.2,org.apache.log4j.xml;version=1.2</osgi.export.log4j1.2>
<osgi.import>*</osgi.import>
<osgi.dynamicImport />
<osgi.private />
> Cyclic dependency in OSGi-context. Apache Log4j SLF4J Binding <-> slf4j-api
> ---------------------------------------------------------------------------
>
> Key: LOG4J2-346
> URL: https://issues.apache.org/jira/browse/LOG4J2-346
> Project: Log4j 2
> Issue Type: Bug
> Components: Core, SLF4J Bridge
> Affects Versions: 2.0-beta4, 2.0-beta8, 2.0-beta9
> Environment: OSGi R5 / Apache Felix 4.x
> Reporter: Roland Weiglhofer
> Labels: Bundle, CyclicDependency, OSGi, SLF4J
> Fix For: 2.0-beta9, 2.0
>
> Attachments: log4j2-slf4j-impl.patch
>
>
> The bundle "Apache Log4j SLF4J Binding" (2.0.0.beta8) has an unresolved
> dependency to the package org.slf4j which is exported by the slf4j-api
> bundle. The Slf4j-api bundle has also an unresolved dependency to the package
> org.slf4j.impl which is exported by the bundle "Apache Log4j SLF4J Binding".
> This is a cyclic dependency in OSGi-context. Without the slf4j-api everything
> works. But the Slf4j-api bundle is needed because of given dependencies of
> third-party-bundles. The "Apache Log4j SLF4J Binding" bundle should also
> export the package org.slf4j.
> ----------------------------------------------------------------
> ID|State |Level|Name
> 0|Active | 0|System Bundle (4.2.1)
> 4|Active | 2|Apache Felix Bundle Repository (1.6.6)
> 5|Active | 2|Apache Felix Configuration Admin Service (1.6.0)
> 6|Active | 2|Apache Felix Gogo Command (0.12.0)
> 7|Active | 2|Apache Felix Gogo Runtime (0.10.0)
> 8|Active | 2|Apache Felix Gogo Shell (0.10.0)
> 9|Resolved | 2|Apache Felix Security Provider (2.2.0)
> 10|Active | 2|Apache Felix Shell Service (1.4.3)
> 11|Installed | 2|Apache Log4j 1.x Compatibility API (2.0.0.beta8)
> 12|Active | 2|Apache Log4j API (2.0.0.beta8)
> 13|Installed | 2|Apache Log4j Commons Logging Bridge (2.0.0.beta8)
> 14|Installed | 2|Apache Log4j Core (2.0.0.beta8)
> 15|Installed | 2|Apache Log4j SLF4J Binding (2.0.0.beta8)
> 16|Active | 2|cal10n-api (0.7.4)
> 17|Active | 2|Commons IO (2.4.0)
> 18|Active | 2|Commons Lang (2.6.0)
> 19|Active | 2|Data mapper for Jackson JSON processor (1.9.13)
> 20|Active | 2|Jackson JSON processor (1.9.13)
> 21|Active | 2|JSON.simple (1.1.1)
> 22|Installed | 2|slf4j-api (1.5.11)
> 23|Installed | 2|slf4j-ext (1.5.11)
> Unresolved constraint in bundle org.apache.logging.log4j-slf4j-impl [15]:
> Unable to resolve 15.0: missing requirement [15.0] osgi.wiring.package;
> (osgi.wiring.package=org.slf4j) [caused by: Unable to resolve 22.0: missing
> requirement [22.0] osgi.wiring.package;
> (&(osgi.wiring.package=org.slf4j.impl)(version>=1.5.5))]
> Unresolved constraint in bundle slf4j.api [22]: Unable to resolve 22.0:
> missing requirement [22.0] osgi.wiring.package;
> (&(osgi.wiring.package=org.slf4j.impl)(version>=1.5.5))
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