Struct LogoFetcher 

pub struct LogoFetcher { /* private fields */ }

Fetches company logos using logo.dev API with caching and a circuit breaker.

This fetcher uses logo.dev’s API (https://logo.dev) which provides company logos by ticker symbol. It constructs URLs like: https://img.logo.dev/ticker/AAPL?token=...&format=png&fallback=404&size=50&theme=dark

The fetcher includes:

1. In-memory caching with TTL
2. Circuit breaker pattern to protect against service failures
3. Configurable timeouts

Implementations

impl LogoFetcher

pub fn new(fetch_client: Arc<FetchClient>) -> Self

Create a new logo fetcher using the provided fetch client.

Environment variables:

• DISABLE_LOGO_FETCHING: when “true”, skip all logo requests.
• LOGO_TIMEOUT_SECONDS: per-request timeout (default 2s).
• LOGO_CIRCUIT_BREAKER_THRESHOLD: failures before opening (default 5).
• LOGO_CIRCUIT_BREAKER_TIMEOUT: cooldown in seconds (default 300s).

pub fn is_enabled(&self) -> bool

Returns whether logo fetching is enabled.

pub async fn fetch_logo( &self, symbol: &str, _website: Option<&str>, ) -> Option<String>

Fetch a logo for the given ticker symbol using logo.dev API.

This uses the ticker symbol directly to fetch the logo from logo.dev. The website parameter is ignored but kept for backward compatibility.

Trait Implementations

impl Clone for LogoFetcher

fn clone(&self) -> LogoFetcher

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogoFetcher

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

Formats the value using the given formatter.