Add Canonic volume and fees adapters (MegaETH)

dexs/canonic/index.ts

@@ -0,0 +1,38 @@
+import { FetchOptions, SimpleAdapter } from "../../adapters/types";
+import { CHAIN } from "../../helpers/chains";
+
+const USDM = '0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7'
+
+const MAOBS = [
+  '0xaD7e5CBfB535ceC8d2E58Dca17b11d9bA76f555E', // BTC.b / USDm
+  '0x23469683e25b780DFDC11410a8e83c923caDF125', // WETH  / USDm
+  '0xDf1576c3C82C9f8B759C69f4cF256061C6Fe1f9e', // USDT0 / USDm
+]
+
+const EVENT_ABI = 'event RungFilled(address indexed taker, bool indexed isBuy, uint16 indexed rung, uint256 baseAmount, uint256 quoteAmount, uint256 priceE18)'
+
+const fetch = async (options: FetchOptions) => {
+  const dailyVolume = options.createBalances()
+
+  for (const maob of MAOBS) {
+    const logs = await options.getLogs({ target: maob, eventAbi: EVENT_ABI })
+    for (const log of logs) {
+      // quoteAmount is denominated in USDm (USD-pegged) for all markets
+      dailyVolume.add(USDM, log.quoteAmount)
+    }
+  }
+
+  return { dailyVolume }
+}
+
+const adapter: SimpleAdapter = {
+  version: 2,
+  adapter: {
+    [CHAIN.MEGAETH]: {
+      fetch,
+      start: '2026-02-09', // TODO: update to actual first trade date
+    },
+  },
+}
+
+export default adapter

fees/canonic/index.ts

@@ -0,0 +1,74 @@
+import { FetchOptions, SimpleAdapter } from "../../adapters/types";
+import { CHAIN } from "../../helpers/chains";
+
+const USDM  = '0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7'
+const BTC_B = '0xB0F70C0bD6FD87dbEb7C10dC692a2a6106817072'
+const WETH  = '0x4200000000000000000000000000000000000006'
+const USDT0 = '0xB8CE59FC3717ada4C02eaDF9682A9e934F625ebb'
+
+const FEE_DENOM = 1_000_000n
+
+const MAOBS = [
+  { address: '0xaD7e5CBfB535ceC8d2E58Dca17b11d9bA76f555E', base: BTC_B, quote: USDM },  // BTC.b / USDm
+  { address: '0x23469683e25b780DFDC11410a8e83c923caDF125', base: WETH,  quote: USDM },  // WETH  / USDm
+  { address: '0xDf1576c3C82C9f8B759C69f4cF256061C6Fe1f9e', base: USDT0, quote: USDM },  // USDT0 / USDm
+]
+
+const EVENT_ABI = 'event RungFilled(address indexed taker, bool indexed isBuy, uint16 indexed rung, uint256 baseAmount, uint256 quoteAmount, uint256 priceE18)'
+
+const fetch = async (options: FetchOptions) => {
+  const dailyFees = options.createBalances()
+  const dailyVolume = options.createBalances()
+
+  for (const maob of MAOBS) {
+    const takerFee = await options.api.call({ target: maob.address, abi: 'uint32:takerFee' })
+    const logs = await options.getLogs({ target: maob.address, eventAbi: EVENT_ABI })
+
+    for (const log of logs) {
+      dailyVolume.add(maob.quote, log.quoteAmount)
+
+      // Buy: fee charged on base output; Sell: fee charged on quote output
+      // Use ceiling division to match on-chain Math.Rounding.Ceil
+      const takerFeeBig = BigInt(takerFee)
+      if (log.isBuy) {
+        const amount = BigInt(log.baseAmount)
+        const fee = (amount * takerFeeBig + FEE_DENOM - 1n) / FEE_DENOM
+        dailyFees.add(maob.base, fee)
+      } else {
+        const amount = BigInt(log.quoteAmount)
+        const fee = (amount * takerFeeBig + FEE_DENOM - 1n) / FEE_DENOM
+        dailyFees.add(maob.quote, fee)
+      }
+    }
+  }
+
+  return {
+    dailyVolume,
+    dailyFees,
+    dailyUserFees: dailyFees,
+    dailyRevenue: dailyFees,            // 100% of fees go to protocol
+    dailyProtocolRevenue: dailyFees,    // collected by feeCollector
+    dailySupplySideRevenue: 0,          // LPs earn from spread, not from fees
+  }
+}
+
+const adapter: SimpleAdapter = {
+  version: 2,
+  adapter: {
+    [CHAIN.MEGAETH]: {
+      fetch,
+      start: '2026-02-09', // TODO: update to actual first trade date
+      meta: {
+        methodology: {
+          Fees: 'Taker fees charged on every trade. Buy orders pay fees in the base token, sell orders pay in the quote token.',
+          UserFees: 'Same as Fees — all fees are paid by takers.',
+          Revenue: '100% of taker fees are sent to the protocol fee collector.',
+          ProtocolRevenue: 'All collected fees go to the protocol treasury.',
+          SupplySideRevenue: 'CLP vault LPs earn from market-making spread, not from protocol fees.',
+        },
+      },
+    },
+  },
+}
+
+export default adapter