bkietz commented on code in PR #39067:
URL: https://github.com/apache/arrow/pull/39067#discussion_r1506308735
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cpp/src/arrow/filesystem/filesystem.h:
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@@ -519,6 +574,82 @@ Result<std::shared_ptr<FileSystem>>
FileSystemFromUriOrPath(
/// @}
+/// \defgroup filesystem-factory-registration Helpers for FileSystem
registration
+///
+/// @{
+
+/// \brief Register a Filesystem factory
+///
+/// Support for custom Uri schemes can be added by registering a factory
+/// for the corresponding FileSystem.
+///
+/// \param[in] scheme a Uri scheme which the factory will handle.
+/// If a factory has already been registered for a scheme,
+/// the new factory will be ignored.
+/// \param[in] factory a function which can produce a FileSystem for Uris
which match
+/// scheme.
+/// \param[in] finalizer a function which must be called to finalize the
factory before
+/// the process exits, or nullptr if no finalization is necessary.
+ARROW_EXPORT void RegisterFileSystemFactory(std::string scheme,
+ FileSystem::Factory factory,
+ void finalizer() = NULLPTR);
+
+/// \brief Register Filesystem factories from a shared library
+///
+/// In addition to dynamically loading the indicated library, registries are
merged if
+/// necessary (static linkage can produce isolated registries).
+ARROW_EXPORT Status LoadFileSystemFactories(const char* libpath);
Review Comment:
Alright, I'll copy some of the description of what's expected in a library
to this docstring
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