Details
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Bug
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Resolution: Fixed
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Low
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8.0.0
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Severity 3 - Minor
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Description
Issue Summary
If a plugin class constructs a breadcrumb object which extends AbstractActionBreadcrumb in Confluence 7.x, the compiled plugin will fail to load on Confluence 8.x due to incompatible bytecode.
Steps to Reproduce
- Add a code snippet similar to the following to your plugin's XWork Action class
public Breadcrumb getBreadcrumb() { return new UserProfileActionBreadcrumb(this); }
- Compile plugin against Confluence 7.x
- Load plugin on Confluence 8.x
Expected Results
Plugin loads and functions as expected with no errors in logs
Actual Results
If wildcard package resolution is enabled you will receive an OSGi error similar to the following:
Caused by: org.osgi.framework.BundleException: Unable to resolve com.atlassian.confluence.plugins.confluence-notifications-spi-plugin [305](R 305.0): missing requirement [com.atlassian.confluence.plugins.confluence-notifications-spi-plugin [305](R 305.0)] osgi.wiring.package; (osgi.wiring.package=com.opensymphony.xwork) Unresolved requirements: [[com.atlassian.confluence.plugins.confluence-notifications-spi-plugin [305](R 305.0)] osgi.wiring.package; (osgi.wiring.package=com.opensymphony.xwork)]
Otherwise you will receive the following class load error:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.atlassian.confluence.notifications.impl.ConfluenceUserSettingsAction': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [com.atlassian.confluence.notifications.impl.ConfluenceUserSettingsAction] from ClassLoader [com.atlassian.confluence.plugins.confluence-notifications-spi-plugin [78]] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:289) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1302) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1219) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:378) at jdk.internal.reflect.GeneratedMethodAccessor229.invoke(Unknown Source) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at com.atlassian.confluence.plugin.LegacySpringContainerAccessor.createBean(LegacySpringContainerAccessor.java:76) at com.atlassian.confluence.impl.struts.PluginAwareActionFactory.buildAction(PluginAwareActionFactory.java:38) at com.atlassian.confluence.impl.struts.PluginAwareActionFactory.buildAction(PluginAwareActionFactory.java:26) at com.opensymphony.xwork2.ObjectFactory.buildAction(ObjectFactory.java:142) at com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:301) ... 329 more Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.atlassian.confluence.notifications.impl.ConfluenceUserSettingsAction] from ClassLoader [com.atlassian.confluence.plugins.confluence-notifications-spi-plugin [78]] at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:485) at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:321) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:267) ... 342 more Caused by: java.lang.NoClassDefFoundError: com/opensymphony/xwork/Action at java.base/java.lang.Class.getDeclaredMethods0(Native Method) at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3166) at java.base/java.lang.Class.getDeclaredMethods(Class.java:2309) at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:467) ... 344 more Caused by: java.lang.ClassNotFoundException: com.opensymphony.xwork.Action not found by com.atlassian.confluence.plugins.confluence-notifications-spi-plugin [78] at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1585) at org.apache.felix.framework.BundleWiringImpl.access$300(BundleWiringImpl.java:79) at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1970) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) ... 348 more
Workaround
TBA