[EXP-26-226] add CL price feeds for fantom (yearn#226)

* fix: correct YFI price on fantom by reading from the CL price feed directly until there's a deployed registry on fantom. * fix: adding some CL price feed mappings for fantom from: https://data.chain.link/fantom/mainnet * fix: clean comments for fantom chainlink feeds * fix: xcredit price block identifier Co-authored-by: banteg <[email protected]>
keccak384 · Feb 3, 2022 · 64a2aee · 64a2aee
1 parent dbb07b2
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diff --git a/yearn/prices/chainlink.py b/yearn/prices/chainlink.py
@@ -1,13 +1,11 @@
 import logging
-from functools import cached_property
-
-from brownie import chain, ZERO_ADDRESS
-from cachetools.func import lru_cache, ttl_cache
 
+from brownie import ZERO_ADDRESS, chain
+from cachetools.func import ttl_cache
 from yearn.events import decode_logs, get_logs_asap
-from yearn.utils import Singleton, contract
-from yearn.networks import Network
 from yearn.exceptions import UnsupportedNetwork
+from yearn.networks import Network
+from yearn.utils import Singleton, contract
 
 logger = logging.getLogger(__name__)
 
@@ -17,17 +15,40 @@
     'USD': '0x0000000000000000000000000000000000000348',
 }
 ADDITIONAL_FEEDS = {
-    "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599": "0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c",  # wbtc -> btc
-    "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2": "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",  # weth -> eth
-    "0x0100546F2cD4C9D97f798fFC9755E47865FF7Ee6": "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",  # aleth -> eth
-    "0xdB25f211AB05b1c97D595516F45794528a807ad8": "0xb49f677943BC038e9857d61E7d053CaA2C1734C1",  # eurs -> eur
-    "0xC581b735A1688071A1746c968e0798D642EDE491": "0xb49f677943BC038e9857d61E7d053CaA2C1734C1",  # eurt -> eur
-    "0xD71eCFF9342A5Ced620049e616c5035F1dB98620": "0xb49f677943BC038e9857d61E7d053CaA2C1734C1",  # seur -> eur
-    "0x81d66D255D47662b6B16f3C5bbfBb15283B05BC2": "0x438F81D95761d7036cd2617295827D9d01Cf593f",  # ibzar -> zar
+    # map similar tokens to existing feeds
+    Network.Mainnet: {
+        "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599": "0xF4030086522a5bEEa4988F8cA5B36dbC97BeE88c",  # wbtc -> btc
+        "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2": "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",  # weth -> eth
+        "0x0100546F2cD4C9D97f798fFC9755E47865FF7Ee6": "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",  # aleth -> eth
+        "0xdB25f211AB05b1c97D595516F45794528a807ad8": "0xb49f677943BC038e9857d61E7d053CaA2C1734C1",  # eurs -> eur
+        "0xC581b735A1688071A1746c968e0798D642EDE491": "0xb49f677943BC038e9857d61E7d053CaA2C1734C1",  # eurt -> eur
+        "0xD71eCFF9342A5Ced620049e616c5035F1dB98620": "0xb49f677943BC038e9857d61E7d053CaA2C1734C1",  # seur -> eur
+        "0x81d66D255D47662b6B16f3C5bbfBb15283B05BC2": "0x438F81D95761d7036cd2617295827D9d01Cf593f",  # ibzar -> zar
+    },
+    # feeds are hardcoded since there is no feed registry on fantom yet
+    # https://data.chain.link/fantom/mainnet
+    Network.Fantom: {
+        "0x21be370D5312f44cB42ce377BC9b8a0cEF1A4C83": "0xf4766552D15AE4d256Ad41B6cf2933482B0680dc",  # wftm
+        "0x321162Cd933E2Be498Cd2267a90534A804051b11": "0x321162Cd933E2Be498Cd2267a90534A804051b11",  # wbtc
+        "0x74b23882a30290451A17c44f4F05243b6b58C76d": "0x11DdD3d147E5b83D01cee7070027092397d63658",  # weth
+        "0xd6070ae98b8069de6B494332d1A1a81B6179D960": "0x4F5Cc6a2291c964dEc4C7d6a50c0D89492d4D91B",  # bifi
+        "0x1E4F97b9f9F913c46F1632781732927B9019C68b": "0xa141D7E3B44594cc65142AE5F2C7844Abea66D2B",  # crv
+        "0x6a07A792ab2965C72a5B8088d3a069A7aC3a993B": "0xE6ecF7d2361B6459cBb3b4fb065E0eF4B175Fe74",  # aave
+        "0x657A1861c15A3deD9AF0B6799a195a249ebdCbc6": "0xD2fFcCfA0934caFdA647c5Ff8e7918A10103c01c",  # cream
+        "0xb3654dc3D10Ea7645f8319668E8F54d2574FBdC8": "0x221C773d8647BC3034e91a0c47062e26D20d97B4",  # link
+        "0x399fe752D39338d28C36F3370fbebd8292fb9E6e": "0xb26867105D25bD127862bEA9B952Fa2E89942837",  # ohmv2
+        "0x56ee926bD8c72B2d5fa1aF4d9E4Cbb515a1E3Adc": "0x2Eb00cC9dB7A7E0a013A49b3F6Ac66008d1456F7",  # snx
+        "0x468003B688943977e6130F4F68F23aad939a1040": "0x02E48946849e0BFDD7bEa5daa80AF77195C7E24c",  # spell
+        "0xae75A438b2E0cB8Bb01Ec1E1e376De11D44477CC": "0xCcc059a1a17577676c8673952Dc02070D29e5a66",  # sushi
+        "0x81740D647493a61329E1c574A11ee7577659fb14": "0x4be9c8fb4105380116c03fc2eeb9ea1e1a109d95",  # fchf
+        "0xe105621721D1293c27be7718e041a4Ce0EbB227E": "0x3E68e68ea2c3698400465e3104843597690ae0f7",  # feur
+        "0x29b0Da86e484E1C0029B56e817912d778aC0EC69": "0x9B25eC3d6acfF665DfbbFD68B3C1D896E067F0ae",  # yfi
+    },
 }
 registries = {
     # https://docs.chain.link/docs/feed-registry/#contract-addresses
     Network.Mainnet: '0x47Fb2585D2C56Fe188D0E6ec628a38b74fCeeeDf',
+    Network.Fantom: None,
 }
 
 
@@ -36,8 +57,11 @@ def __init__(self):
         if chain.id not in registries:
             raise UnsupportedNetwork('chainlink is not supported on this network')
 
-        self.registry = contract(registries[chain.id])
-        self.load_feeds()
+        if registries[chain.id]:
+            self.registry = contract(registries[chain.id])
+            self.load_feeds()
+        else:
+            self.feeds = ADDITIONAL_FEEDS[chain.id]
 
     def load_feeds(self):
         logs = decode_logs(
@@ -48,7 +72,7 @@ def load_feeds(self):
             for log in logs
             if log['denomination'] == DENOMINATIONS['USD']
         }
-        self.feeds.update(ADDITIONAL_FEEDS)
+        self.feeds.update(ADDITIONAL_FEEDS[chain.id])
         logger.info(f'loaded {len(self.feeds)} feeds')
 
     def get_feed(self, asset):

diff --git a/yearn/prices/constants.py b/yearn/prices/constants.py
@@ -48,9 +48,12 @@
     Network.Fantom: {
         "0x04068DA6C83AFCFA0e13ba15A6696662335D5B75": "usdc",
         "0x8D11eC38a3EB5E956B052f67Da8Bdc9bef8Abf3E": "dai",
+        "0x1B27A9dE6a775F98aaA5B90B62a4e2A0B84DbDd9": "usdt",
+        "0xC931f61B1534EB21D8c11B24f3f5Ab2471d4aB50": "busd",
         "0xe2D27f06F63d98b8e11b38b5b08A75D0c8dD62B9": "ust",
         "0x82f0B8B456c1A451378467398982d4834b6829c1": "mim",
-        "0x049d68029688eAbF473097a2fC38ef61633A3C7A": "fusdt"
+        "0x049d68029688eAbF473097a2fC38ef61633A3C7A": "fusdt",
+        "0xdc301622e621166BD8E82f2cA0A26c13Ad0BE355": "frax",
     },
     Network.Arbitrum: {
         '0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8': 'usdc',

diff --git a/yearn/prices/magic.py b/yearn/prices/magic.py
@@ -65,15 +65,18 @@ def find_price(token, block):
         price = yearn_lens.get_price(token, block=block)
         logger.debug("yearn -> %s", price)
 
-    # xcredit
-    elif chain.id == Network.Fantom and token == '0xd9e28749e80D867d5d14217416BFf0e668C10645':
-        logger.debug('xcredit -> unwrap')
-        wrapper = contract(token)
-        price = get_price(wrapper.token(), block=block) * wrapper.getShareValue() / 1e18
-    # no liquid market for yveCRV-DAO -> return CRV token price
-    elif chain.id == Network.Mainnet and token == '0xc5bDdf9843308380375a611c18B50Fb9341f502A' and block and block < 11786563:
-        if curve and curve.crv:
-            return get_price(curve.crv, block=block)
+    elif chain.id == Network.Fantom:
+        # xcredit
+        if token == '0xd9e28749e80D867d5d14217416BFf0e668C10645':
+            logger.debug('xcredit -> unwrap')
+            wrapper = contract(token)
+            price = get_price(wrapper.token(), block=block) * wrapper.getShareValue(block_identifier=block) / 1e18
+
+    elif chain.id == Network.Mainnet:
+        # no liquid market for yveCRV-DAO -> return CRV token price
+        if token == '0xc5bDdf9843308380375a611c18B50Fb9341f502A' and block and block < 11786563:
+            if curve and curve.crv:
+                return get_price(curve.crv, block=block)
 
     markets = [
         chainlink,