107 lines
3.3 KiB
Python
107 lines
3.3 KiB
Python
# # ⚠ Warning
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
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# LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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# NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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# [🥭 Mango Markets](https://mango.markets/) support is available at:
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# [Docs](https://docs.mango.markets/)
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# [Discord](https://discord.gg/67jySBhxrg)
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# [Twitter](https://twitter.com/mangomarkets)
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# [Github](https://github.com/blockworks-foundation)
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# [Email](mailto:hello@blockworks.foundation)
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import abc
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import logging
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import typing
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from solana.publickey import PublicKey
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from .markets import Market
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# # 🥭 MarketLookup class
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#
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# This base class allows specialised ways of looking up markets by symbol or by address.
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#
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class MarketLookup(metaclass=abc.ABCMeta):
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def __init__(self) -> None:
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self._logger: logging.Logger = logging.getLogger(self.__class__.__name__)
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@abc.abstractmethod
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def find_by_symbol(self, symbol: str) -> typing.Optional[Market]:
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raise NotImplementedError(
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"MarketLookup.find_by_symbol() is not implemented on the base type."
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)
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@abc.abstractmethod
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def find_by_address(self, address: PublicKey) -> typing.Optional[Market]:
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raise NotImplementedError(
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"MarketLookup.find_by_address() is not implemented on the base type."
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)
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@abc.abstractmethod
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def all_markets(self) -> typing.Sequence[Market]:
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raise NotImplementedError(
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"MarketLookup.all_markets() is not implemented on the base type."
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)
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# # 🥭 NullMarketLookup class
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#
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# This class is a simple stub `MarketLookup` that never returns a `Market`.
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#
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class NullMarketLookup(MarketLookup):
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def __init__(self) -> None:
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super().__init__()
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def find_by_symbol(self, symbol: str) -> typing.Optional[Market]:
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return None
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def find_by_address(self, address: PublicKey) -> typing.Optional[Market]:
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return None
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def all_markets(self) -> typing.Sequence[Market]:
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return []
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# # 🥭 CompoundMarketLookup class
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#
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# This class allows multiple `MarketLookup` objects to be combined, returning the first valid lookup result
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# found.
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#
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class CompoundMarketLookup(MarketLookup):
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def __init__(self, lookups: typing.Sequence[MarketLookup]) -> None:
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super().__init__()
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self.lookups: typing.Sequence[MarketLookup] = lookups
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def find_by_symbol(self, symbol: str) -> typing.Optional[Market]:
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for lookup in self.lookups:
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result = lookup.find_by_symbol(symbol)
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if result is not None:
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return result
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return None
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def find_by_address(self, address: PublicKey) -> typing.Optional[Market]:
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for lookup in self.lookups:
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result = lookup.find_by_address(address)
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if result is not None:
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return result
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return None
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def all_markets(self) -> typing.Sequence[Market]:
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return [
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market
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for sublist in map(lambda lookup: lookup.all_markets(), self.lookups)
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for market in sublist
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]
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