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Type:
Bug
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Resolution: Unresolved
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Priority:
Minor
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Component/s: github-branch-source-plugin
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None
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Environment:Jenkins: 2.528.1
OS: Linux - 6.1.153-175.280.amzn2023.x86_64
Java: 21.0.8 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
github-branch-source:1917.v9ee8a_39b_3d0d
The following error occurs when we set a repository access strategy on a github app credential:
hudson.remoting.ProxyException: java.lang.ClassCastException: class java.lang.String cannot be cast to class java.lang.Enum (java.lang.String and java.lang.Enum are in module java.base of loader 'bootstrap') at PluginClassLoader for github-api//org.kohsuke.github.GHAppCreateTokenBuilder.permissions(GHAppCreateTokenBuilder.java:94) at PluginClassLoader for github-branch-source//org.jenkinsci.plugins.github_branch_source.GitHubAppCredentials.generateAppInstallationToken(GitHubAppCredentials.java:331) at PluginClassLoader for github-branch-source//org.jenkinsci.plugins.github_branch_source.GitHubAppCredentials$DelegatingGitHubAppCredentials$GetToken.call(GitHubAppCredentials.java:768) at PluginClassLoader for github-branch-source//org.jenkinsci.plugins.github_branch_source.GitHubAppCredentials$DelegatingGitHubAppCredentials$GetToken.call(GitHubAppCredentials.java:753) at hudson.remoting.UserRequest.perform(UserRequest.java:225) at hudson.remoting.UserRequest.perform(UserRequest.java:50) at hudson.remoting.Request$2.run(Request.java:391) at hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:81) at org.jenkinsci.remoting.CallableDecorator.call(CallableDecorator.java:18) at hudson.remoting.CallableDecoratorList.lambda$applyDecorator$0(CallableDecoratorList.java:21) at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46) at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:80) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
It seems this is a bug in https://github.com/jenkinsci/github-branch-source-plugin/blob/9ee8a39b3d0d7f201187b0013d8d5daf3a37a047/src/main/java/org/jenkinsci/plugins/github_branch_source/GitHubAppCredentials.java#L775 where an improper cast is done from JSONObject to Map<String, GHPermissionType>. At best it's probably safe to say Map<String, String>, but the map value has to be deserialized back to the GHPermissionType enum.
