llm_stack_ollama/
factory.rs

1//! Factory for building Ollama providers from configuration.
2
3use llm_stack::registry::{ProviderConfig, ProviderFactory};
4use llm_stack::{DynProvider, LlmError};
5
6use crate::{OllamaConfig, OllamaProvider};
7
8/// Factory for creating [`OllamaProvider`] instances from configuration.
9///
10/// Register this factory with the global registry to enable config-driven
11/// provider instantiation:
12///
13/// ```rust,no_run
14/// use llm_stack::ProviderRegistry;
15/// use llm_stack_ollama::OllamaFactory;
16///
17/// ProviderRegistry::global().register(Box::new(OllamaFactory));
18/// ```
19///
20/// # Configuration
21///
22/// | Field | Required | Description |
23/// |-------|----------|-------------|
24/// | `provider` | Yes | Must be `"ollama"` |
25/// | `api_key` | No | Not used (Ollama doesn't require auth) |
26/// | `model` | Yes | Model identifier (e.g., `"llama3.2"`) |
27/// | `base_url` | No | Custom API endpoint (default: `http://localhost:11434`) |
28/// | `timeout` | No | Request timeout |
29#[derive(Debug, Clone, Copy, Default)]
30pub struct OllamaFactory;
31
32impl ProviderFactory for OllamaFactory {
33    fn name(&self) -> &'static str {
34        "ollama"
35    }
36
37    fn build(&self, config: &ProviderConfig) -> Result<Box<dyn DynProvider>, LlmError> {
38        if config.model.is_empty() {
39            return Err(LlmError::InvalidRequest(
40                "ollama provider requires model".into(),
41            ));
42        }
43
44        let mut ollama_config = OllamaConfig {
45            model: config.model.clone(),
46            ..Default::default()
47        };
48
49        if let Some(base_url) = &config.base_url {
50            ollama_config.base_url.clone_from(base_url);
51        }
52
53        if let Some(timeout) = config.timeout {
54            ollama_config.timeout = Some(timeout);
55        }
56
57        Ok(Box::new(OllamaProvider::new(ollama_config)))
58    }
59}
60
61/// Registers the Ollama factory with the global registry.
62///
63/// Call this once at application startup to enable config-driven
64/// Ollama provider creation.
65pub fn register_global() {
66    llm_stack::ProviderRegistry::global().register(Box::new(OllamaFactory));
67}
68
69#[cfg(test)]
70mod tests {
71    use super::*;
72    use std::time::Duration;
73
74    #[test]
75    fn test_factory_name() {
76        let factory = OllamaFactory;
77        assert_eq!(factory.name(), "ollama");
78    }
79
80    #[test]
81    fn test_factory_build_success() {
82        let factory = OllamaFactory;
83        let config = ProviderConfig::new("ollama", "llama3.2")
84            .base_url("http://remote:11434")
85            .timeout(Duration::from_secs(60));
86
87        let provider = factory.build(&config).unwrap();
88        assert_eq!(provider.metadata().name, "ollama");
89        assert_eq!(provider.metadata().model, "llama3.2");
90    }
91
92    #[test]
93    fn test_factory_no_api_key_required() {
94        let factory = OllamaFactory;
95        // Ollama doesn't require an API key
96        let config = ProviderConfig::new("ollama", "mistral");
97
98        let provider = factory.build(&config).unwrap();
99        assert_eq!(provider.metadata().model, "mistral");
100    }
101
102    #[test]
103    fn test_factory_empty_model() {
104        let factory = OllamaFactory;
105        let config = ProviderConfig::new("ollama", "");
106
107        let err = factory.build(&config).err().unwrap();
108        assert!(matches!(err, LlmError::InvalidRequest(_)));
109    }
110}
llm_stack_ollama/factory.rs

llm_stack_ollama/
factory.rs
