46 lines
1.6 KiB
Markdown
46 lines
1.6 KiB
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 validator implementation is not available in the Elixir binding. Validators must be implemented in Rust using the `Validator` trait.
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To implement a minimum length validator in Rust:
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```rust
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use kreuzberg::plugins::{Plugin, Validator};
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use kreuzberg::{Result, ExtractionResult, ExtractionConfig, KreuzbergError};
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use async_trait::async_trait;
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struct MinLengthValidator {
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min_length: usize,
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}
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impl Plugin for MinLengthValidator {
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fn name(&self) -> &str { "min-length-validator" }
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fn version(&self) -> String { "1.0.0".to_string() }
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fn initialize(&self) -> Result<()> { Ok(()) }
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fn shutdown(&self) -> Result<()> { Ok(()) }
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}
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#[async_trait]
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impl Validator for MinLengthValidator {
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async fn validate(
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&self,
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result: &ExtractionResult,
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_config: &ExtractionConfig,
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) -> Result<()> {
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if result.content.len() < self.min_length {
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return Err(KreuzbergError::validation(format!(
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"Content too short: {} < {} characters",
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result.content.len(),
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self.min_length
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)));
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}
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Ok(())
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}
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fn priority(&self) -> i32 {
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100
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}
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}
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```
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Register this in your Rust initialization and Elixir will be able to use it.
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