Struct MarketRegistry 

pub struct MarketRegistry { /* private fields */ }

Registry mapping market_index to InstrumentId and back.

Indexed for O(1) lookup by all three keys the adapter switches between: the venue’s numeric market_index (used in transaction encoding and WebSocket subscriptions), the Nautilus [InstrumentId] (used by the engine), and the raw venue symbol scoped by product type (used when parsing REST list responses). Designed to be shared across the HTTP and WebSocket clients via Arc.

The registry is intended for write-once bootstrap followed by read-only consumption: each individual lookup is lock-free, but a single insert is not transactional across the three indexes. Rare write events such as relists must be coordinated by the caller (e.g. quiesce consumers before reinserting) to avoid concurrent readers observing partial state.

Implementations

impl MarketRegistry

pub fn new() -> Self

Returns a new empty registry.

pub fn insert( &self, market_index: i16, venue_symbol: &str, product_type: LighterProductType, ) -> InstrumentId

Registers a market and returns the resulting [InstrumentId].

Re-inserting the same market_index overwrites the previous mapping; callers may use this to handle venue rename or relisting events. Stale entries in the inverse indexes are evicted before the new mapping is installed so all three lookups stay consistent.

pub fn instrument_id(&self, market_index: i16) -> Option<InstrumentId>

Returns the [InstrumentId] for a given market_index.

pub fn all_market_indices(&self) -> Vec<i16>

Returns every registered market_index.

Callers iterating across all venue markets (e.g. the mass-status reconciliation path) use this to bound the per-market REST fan-out.

pub fn market_index(&self, instrument_id: &InstrumentId) -> Option<i16>

Returns the venue market_index for a given [InstrumentId].

pub fn instrument_id_by_symbol( &self, venue_symbol: &str, product_type: LighterProductType, ) -> Option<InstrumentId>

Returns the [InstrumentId] for a raw venue symbol scoped by product.

The raw symbol on its own is ambiguous when the venue lists the same asset on both perpetual and spot; the product discriminant resolves it.

pub fn clear(&self)

Removes all registered markets.

pub fn len(&self) -> usize

Returns the number of registered markets.

pub fn is_empty(&self) -> bool

Returns whether the registry has no entries.

Trait Implementations

impl Debug for MarketRegistry

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

Formats the value using the given formatter.

impl Default for MarketRegistry

fn default() -> MarketRegistry

Returns the “default value” for a type.