entrenar/ecosystem/realizar/
exporter.rs

1//! GGUF exporter implementation.
2
3use super::error::GgufExportError;
4use super::metadata::{GeneralMetadata, GgufMetadata};
5use super::provenance::ExperimentProvenance;
6use super::quantization::QuantizationType;
7use std::path::Path;
8
9/// GGUF exporter for model conversion.
10#[derive(Debug, Clone)]
11pub struct GgufExporter {
12    /// Quantization type to apply
13    quantization: QuantizationType,
14    /// Metadata to embed
15    metadata: GgufMetadata,
16    /// Whether to validate model structure
17    validate: bool,
18    /// Number of threads for quantization
19    threads: usize,
20}
21
22impl Default for GgufExporter {
23    fn default() -> Self {
24        Self::new(QuantizationType::Q4KM)
25    }
26}
27
28impl GgufExporter {
29    /// Create a new exporter with specified quantization.
30    pub fn new(quantization: QuantizationType) -> Self {
31        Self {
32            quantization,
33            metadata: GgufMetadata::default(),
34            validate: true,
35            threads: num_cpus(),
36        }
37    }
38
39    /// Set metadata.
40    pub fn with_metadata(mut self, metadata: GgufMetadata) -> Self {
41        self.metadata = metadata;
42        self
43    }
44
45    /// Set general metadata.
46    pub fn with_general(mut self, general: GeneralMetadata) -> Self {
47        self.metadata.general = general;
48        self
49    }
50
51    /// Set experiment provenance.
52    pub fn with_provenance(mut self, provenance: ExperimentProvenance) -> Self {
53        self.metadata.provenance = Some(provenance);
54        self
55    }
56
57    /// Disable validation.
58    pub fn without_validation(mut self) -> Self {
59        self.validate = false;
60        self
61    }
62
63    /// Set thread count.
64    pub fn with_threads(mut self, threads: usize) -> Self {
65        self.threads = threads.max(1);
66        self
67    }
68
69    /// Get the quantization type.
70    pub fn quantization(&self) -> QuantizationType {
71        self.quantization
72    }
73
74    /// Get the metadata.
75    pub fn metadata(&self) -> &GgufMetadata {
76        &self.metadata
77    }
78
79    /// Export model to GGUF format.
80    ///
81    /// This is a placeholder that prepares export configuration.
82    /// Actual export requires Realizar crate integration.
83    pub fn export(
84        &self,
85        _input_path: impl AsRef<Path>,
86        output_path: impl AsRef<Path>,
87    ) -> Result<GgufExportResult, GgufExportError> {
88        let output = output_path.as_ref();
89
90        // Validate output path
91        if let Some(parent) = output.parent() {
92            if !parent.exists() {
93                return Err(GgufExportError::IoError(format!(
94                    "Output directory does not exist: {}",
95                    parent.display()
96                )));
97            }
98        }
99
100        // In a real implementation, this would:
101        // 1. Load model from input_path using Realizar
102        // 2. Apply quantization
103        // 3. Embed metadata
104        // 4. Write to output_path
105
106        // Return export result with metadata
107        Ok(GgufExportResult {
108            output_path: output.to_path_buf(),
109            quantization: self.quantization,
110            metadata_keys: self
111                .metadata
112                .provenance
113                .as_ref()
114                .map_or(0, |p| p.to_metadata_pairs().len())
115                + self.metadata.custom.len(),
116            estimated_size_bytes: 0, // Would be calculated from actual model
117        })
118    }
119
120    /// Collect all metadata as key-value pairs.
121    pub fn collect_metadata(&self) -> Vec<(String, String)> {
122        let mut pairs = Vec::new();
123
124        // General metadata
125        pairs
126            .push(("general.architecture".to_string(), self.metadata.general.architecture.clone()));
127        pairs.push(("general.name".to_string(), self.metadata.general.name.clone()));
128
129        if let Some(ref author) = self.metadata.general.author {
130            pairs.push(("general.author".to_string(), author.clone()));
131        }
132        if let Some(ref desc) = self.metadata.general.description {
133            pairs.push(("general.description".to_string(), desc.clone()));
134        }
135        if let Some(ref license) = self.metadata.general.license {
136            pairs.push(("general.license".to_string(), license.clone()));
137        }
138        if let Some(ref url) = self.metadata.general.url {
139            pairs.push(("general.url".to_string(), url.clone()));
140        }
141
142        pairs.push(("general.file_type".to_string(), self.quantization.as_str().to_string()));
143
144        // Provenance metadata
145        if let Some(ref prov) = self.metadata.provenance {
146            pairs.extend(prov.to_metadata_pairs());
147        }
148
149        // Custom metadata
150        for (key, value) in &self.metadata.custom {
151            pairs.push((format!("custom.{key}"), value.clone()));
152        }
153
154        pairs
155    }
156}
157
158/// Result of a GGUF export operation.
159#[derive(Debug, Clone)]
160pub struct GgufExportResult {
161    /// Path to exported file
162    pub output_path: std::path::PathBuf,
163    /// Quantization type used
164    pub quantization: QuantizationType,
165    /// Number of metadata keys embedded
166    pub metadata_keys: usize,
167    /// Estimated file size in bytes
168    pub estimated_size_bytes: u64,
169}
170
171/// Get number of CPUs (simplified).
172fn num_cpus() -> usize {
173    std::thread::available_parallelism().map(std::num::NonZero::get).unwrap_or(4)
174}
entrenar/ecosystem/realizar/exporter.rs

entrenar/ecosystem/realizar/
exporter.rs
