Struct RagConfig 

pub struct RagConfig {

    pub db_backend: DbBackend,
    pub database_url: String,
    pub embed_provider: EmbedProvider,
    pub embed_model: String,
    pub embed_dim: usize,
    pub ollama_base_url: String,
    pub gemini_api_key: Option<String>,
    pub gemini_model: String,
    pub embed_onnx_path: String,
    pub embed_tokenizer_path: String,
    pub openrouter_api_key: Option<String>,
    pub openrouter_base_url: String,
    pub llm_model: String,
    pub ocr_lang: OcrLang,
    pub chunker: ChunkerKind,
    pub chunk_size: usize,
    pub chunk_overlap: f32,
    pub chunk_unit: ChunkUnit,
    pub chunk_tokenizer: Option<String>,
    pub retrieval_mode: RetrievalMode,
    pub top_k: usize,
    pub rrf_k: f32,
    pub multiquery_n: usize,
    pub source: SourceKind,
    pub source_path: String,
    pub source_url: Option<String>,
    pub source_user: Option<String>,
    pub source_password: Option<String>,
    pub documents_output: Option<String>,
    pub queue: QueueKind,
    pub rabbitmq_url: Option<String>,
    pub redis_url: Option<String>,
    pub http_addr: String,
    pub api_keys: Vec<String>,
}

The fully-resolved configuration for a RAG session.

Fields

db_backend: DbBackend

database_url: String

embed_provider: EmbedProvider

embed_model: String

embed_dim: usize

ollama_base_url: String

gemini_api_key: Option<String>

gemini_model: String

embed_onnx_path: String

embed_tokenizer_path: String

openrouter_api_key: Option<String>

openrouter_base_url: String

llm_model: String

ocr_lang: OcrLang

OCR recognition language (RAG_OCR_LANG): en (default — English PP-OCRv3, docling-pdf’s own default) or ch (the multilingual conformance-validated model; weak Latin word spacing). Maps onto docling-pdf’s DOCLING_RS_OCR_LANG — explicit DOCLING_OCR_* env overrides always win.

chunker: ChunkerKind

chunk_size: usize

chunk_overlap: f32

chunk_unit: ChunkUnit

chunk_tokenizer: Option<String>

Path to a HuggingFace tokenizer.json for the hybrid chunker’s token counts (RAG_CHUNK_TOKENIZER). Required when chunker = hybrid.

retrieval_mode: RetrievalMode

top_k: usize

rrf_k: f32

multiquery_n: usize

source: SourceKind

source_path: String

source_url: Option<String>

source_user: Option<String>

source_password: Option<String>

documents_output: Option<String>

Optional folder to dump each ingested document’s converted Markdown into (for debugging / re-ingestion). None disables the dump.

queue: QueueKind

rabbitmq_url: Option<String>

redis_url: Option<String>

http_addr: String

Bind address for serve (default 127.0.0.1:8080).

api_keys: Vec<String>

Accepted API keys (comma-separated in RAG_API_KEYS). The server refuses to start with an empty list — auth is fail-closed.

Implementations

impl RagConfig

pub fn from_env() -> Result<Self>

Load a .env file (if present) then resolve config from the environment.

Missing keys fall back to the Default values, so this never fails on an empty environment; it only errors on an invalid value (bad number, unknown backend name).

pub fn validate(&self) -> Result<()>

Sanity-check numeric ranges. Returns the first violation.

Trait Implementations

impl Clone for RagConfig

fn clone(&self) -> RagConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RagConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RagConfig

fn default() -> Self

Returns the “default value” for a type.