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https://issues.apache.org/jira/browse/NIFI-6874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Peter Radden updated NIFI-6874:
-------------------------------
Priority: Major (was: Minor)
> nifi-nar-maven-plugin "Could not generate extensions' documentation" with
> native libraries
> ------------------------------------------------------------------------------------------
>
> Key: NIFI-6874
> URL: https://issues.apache.org/jira/browse/NIFI-6874
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions, Tools and Build
> Affects Versions: nifi-nar-maven-plugin-1.3.1
> Reporter: Peter Radden
> Priority: Major
>
> {code:java}
> org.apache.maven.plugin.MojoExecutionException: Failed to create Extension
> Documentation
> at org.apache.nifi.NarMojo.generateDocumentation (NarMojo.java:596)
> at org.apache.nifi.NarMojo.execute (NarMojo.java:499)
> ...
> Caused by: java.lang.UnsatisfiedLinkError: no [Library] in java.library.path
> at java.lang.ClassLoader.loadLibrary (ClassLoader.java:1867)
> at java.lang.Runtime.loadLibrary0 (Runtime.java:870)
> at java.lang.System.loadLibrary (System.java:1122)
> ...
> at org.apache.nifi.processor.AbstractSessionFactoryProcessor.initialize
> (AbstractSessionFactoryProcessor.java:63)
> at org.apache.nifi.documentation.AbstractDocumentationWriter.initialize
> (AbstractDocumentationWriter.java:86){code}
> Custom processors that require native libraries for the implementation fail
> to generate documentation during nar build due to the need to initialize the
> processor.
> While this could be resolved by a command line update to the
> java.library.path, I think that it would be better to extend the
> ExtensionClassLoader to attempt to find the libraries (similar to as done by
> the NarClassLoader.
> My current temporary solution which uses a customized nifi-nar-maven-plugin
> is to add the following function to the ExtensionClassLoader:
> {code:java}
> protected String findLibrary(final String libname)
> {
> final File nativeDir = new File(projectOutputDirectory/*from
> MavenProject*/, "META-INF/bundled-dependencies/native");
> final File libsoFile = new File(nativeDir, "lib" + libname + ".so");
> final File dllFile = new File(nativeDir, libname + ".dll");
> final File soFile = new File(nativeDir, libname + ".so");
> if (libsoFile.exists())
> return libsoFile.getAbsolutePath();
> else if (dllFile.exists())
> return dllFile.getAbsolutePath();
> else if (soFile.exists())
> return soFile.getAbsolutePath();
> return null;
> }
> {code}
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