Module context 

Dynamic context provider for per-request context overrides.

This module provides the DynamicContextProvider trait that enables per-request context injection (e.g., dynamic authentication headers).

Usage

Implement the trait and pass to namespace builders:

use lance_namespace_impls::{RestNamespaceBuilder, DynamicContextProvider, OperationInfo};
use std::collections::HashMap;
use std::sync::Arc;

#[derive(Debug)]
struct MyProvider;

impl DynamicContextProvider for MyProvider {
    fn provide_context(&self, info: &OperationInfo) -> HashMap<String, String> {
        let mut context = HashMap::new();
        context.insert("headers.Authorization".to_string(), format!("Bearer {}", get_current_token()));
        context.insert("headers.X-Request-Id".to_string(), generate_request_id());
        context
    }
}

let namespace = RestNamespaceBuilder::new("https://api.example.com")
    .context_provider(Arc::new(MyProvider))
    .build();

For RestNamespace, context keys that start with headers. are converted to HTTP headers by stripping the prefix. For example, {"headers.Authorization": "Bearer abc123"} becomes the Authorization: Bearer abc123 header. Keys without the headers. prefix are ignored for HTTP headers but may be used for other purposes.

Structs

OperationInfo

Information about the namespace operation being executed.

Traits

DynamicContextProvider

Trait for providing dynamic request context.