Struct ElementCache 

pub struct ElementCache { /* private fields */ }

Element cache for storing collapsed discussion elements (code blocks, details sections, truncated comments, overflow).

Lives entirely in Rust memory. Pure Rust — Python bindings exist in the sibling mcp-methods-py crate as a thin PyElementCache newtype wrapping this struct.

Implementations

impl ElementCache

pub fn new() -> Self

pub fn get(&self, repo: &str, number: u64, element_id: &str) -> Option<String>

Get a cached element as a JSON string. Returns None if not found.

pub fn store_elements(&mut self, repo: &str, number: u64, elements_json: &str)

Store elements for a repo/number, replacing any existing ones.

pub fn update_elements(&mut self, repo: &str, number: u64, elements_json: &str)

Add elements to an existing cache entry (merge).

pub fn available(&self, repo: &str, number: u64) -> Vec<String>

List available element IDs for a repo/number.

pub fn retrieve( &self, repo: &str, number: u64, element_id: &str, lines: Option<&str>, grep: Option<&str>, context: usize, ) -> String

Retrieve a cached element with optional line slicing or grep.

This is the main drill-down method. Returns a JSON string.

pub fn fetch_issue( &mut self, repo: &str, number: u64, element_id: Option<&str>, lines: Option<&str>, grep: Option<&str>, context: usize, refresh: bool, ) -> String

Fetch a GitHub issue/PR, compact it, and store cache entries.

Releases the GIL during all HTTP and computation (when the python feature is on). This is the primary entry point for fetching discussions with caching, callable from both Python and pure Rust.

Every code path returns a status string — invalid-repo, fetch- failure, cached-summary, overflow-preview, and full-text are all returned as String; the return is never a real error envelope. Pyo3 wraps the return as a Python str when the python feature is enabled.

Trait Implementations

impl Default for ElementCache

fn default() -> Self

Returns the “default value” for a type.