C0urante commented on code in PR #13971:
URL: https://github.com/apache/kafka/pull/13971#discussion_r1267236920
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connect/runtime/src/main/java/org/apache/kafka/connect/runtime/isolation/PluginScanner.java:
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@@ -118,35 +120,80 @@ private void loadJdbcDrivers(final ClassLoader loader) {
}
@SuppressWarnings({"rawtypes", "unchecked"})
- protected <T> PluginDesc<T> pluginDesc(Class<? extends T> plugin, String
version, ClassLoader loader) {
- return new PluginDesc(plugin, version, loader);
+ protected <T> PluginDesc<T> pluginDesc(Class<? extends T> plugin, String
version, PluginSource source) {
+ return new PluginDesc(plugin, version, source.loader());
}
@SuppressWarnings("unchecked")
- protected <T> SortedSet<PluginDesc<T>> getServiceLoaderPluginDesc(Class<T>
klass, ClassLoader loader) {
+ protected <T> SortedSet<PluginDesc<T>> getServiceLoaderPluginDesc(Class<T>
klass, PluginSource source) {
SortedSet<PluginDesc<T>> result = new TreeSet<>();
- ServiceLoader<T> serviceLoader = ServiceLoader.load(klass, loader);
- for (Iterator<T> iterator = serviceLoader.iterator();
iterator.hasNext(); ) {
- try (LoaderSwap loaderSwap = withClassLoader(loader)) {
+ ServiceLoader<T> serviceLoader = handleLinkageError(klass, source, ()
-> ServiceLoader.load(klass, source.loader()));
Review Comment:
I think that given the low likelihood of ever hitting this error when
invoking `ServiceLoader::load` or `ServiceLoader::iterator` (neither is
annotated with any kind of `throws` declaration, the iterator is specifically
called out as being lazy-loading, and I'm not aware of any JDK bug reports that
would lead to this kind of behavior), it's better to throw errors to the caller.
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