12 lines
918 B
Markdown
12 lines
918 B
Markdown
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<!-- snippet:skip reason="Elixir Rustler NIFs cannot host async Send + Sync + 'static Rust trait objects via callbacks; the BEAM actor-model boundary requires plugin work to live in the Rust core. The alef-generated Elixir trait_call macro additionally has a backslash/encoding bug (separate alef-codegen ticket). Custom plugins must be implemented in Rust." -->
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Custom PDF metadata extractor implementation is not available in the Elixir binding. Document extractors must be implemented in Rust using the `DocumentExtractor` trait.
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To implement a custom PDF metadata extractor in Rust:
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1. Implement the `Plugin` and `DocumentExtractor` traits
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2. Add support for PDF MIME types: `application/pdf`
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3. Use a PDF library (e.g., pdfium-render, pdf crate) to extract metadata
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4. Register the extractor in the Rust core
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See the Rust plugin documentation for implementing custom `DocumentExtractor` plugins for PDF files.
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