88 lines
3.2 KiB
Python
88 lines
3.2 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 json
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import logging
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import os.path
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import typing
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from decimal import Decimal
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from solana.publickey import PublicKey
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from .constants import DATA_PATH
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from .token import Token
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from .tokenlookup import TokenLookup
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# # 🥭 SplTokenLookup class
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#
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# This class allows us to look up token data specifically from Solana static data.
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#
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# The Solana static data is the [Solana token list](https://raw.githubusercontent.com/solana-labs/token-list/main/src/tokens/solana.tokenlist.json) provided by Serum.
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#
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# You can load an `SplTokenLookup` class by something like:
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# ```
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# with open("solana.tokenlist.json") as json_file:
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# token_data = json.load(json_file)
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# token_lookup = TokenLookup(token_data)
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# ```
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#
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class SplTokenLookup(TokenLookup):
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DefaultDataFilepath = os.path.join(DATA_PATH, "solana.tokenlist.json")
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def __init__(self, filename: str, token_data: typing.Dict) -> None:
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self.logger: logging.Logger = logging.getLogger(self.__class__.__name__)
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self.filename: str = filename
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self.token_data = token_data
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def find_by_symbol(self, symbol: str) -> typing.Optional[Token]:
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for token in self.token_data["tokens"]:
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if token["symbol"] == symbol:
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return Token(token["symbol"], token["name"], PublicKey(token["address"]), Decimal(token["decimals"]))
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return None
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def find_by_mint(self, mint: PublicKey) -> typing.Optional[Token]:
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mint_string: str = str(mint)
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for token in self.token_data["tokens"]:
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if token["address"] == mint_string:
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return Token(token["symbol"], token["name"], PublicKey(token["address"]), Decimal(token["decimals"]))
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return None
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def find_by_symbol_or_raise(self, symbol: str) -> Token:
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token = self.find_by_symbol(symbol)
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if token is None:
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raise Exception(f"Could not find token with symbol '{symbol}'.")
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return token
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def find_by_mint_or_raise(self, mint: PublicKey) -> Token:
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token = self.find_by_mint(mint)
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if token is None:
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raise Exception(f"Could not find token with mint {mint}.")
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return token
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@staticmethod
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def load(filename: str) -> "TokenLookup":
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with open(filename, encoding="utf-8") as json_file:
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token_data = json.load(json_file)
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return SplTokenLookup(filename, token_data)
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def __str__(self) -> str:
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return f"« 𝚂𝚙𝚕𝚃𝚘𝚔𝚎𝚗𝙻𝚘𝚘𝚔𝚞𝚙 [{self.filename}] »"
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