[indexer]: index yield vaults to track LP yields

sdk/packages/indexer/scripts/generate-chain-yamls.ts

@@ -160,6 +160,14 @@ const generateEvmYaml = async (chain: string, config: Configuration) => {
 		config,
 		endpoints,
 		blockNumber,
+		// Flattened (vault, underlyingToken) pairs so the template can emit one Deposit/Withdraw
+		// datasource per vault. The handler resolves underlyingToken from YIELD_VAULT_ADDRESSES.
+		yieldVaults:
+			config.type === "evm" && config.contracts?.yieldVaults
+				? Object.entries(config.contracts.yieldVaults).flatMap(([token, entry]) =>
+						entry.vaults.map((vault) => ({ vault, underlyingToken: token })),
+					)
+				: [],
 		handlerKind: "ethereum/LogHandler",
 		handlers: [
 			{ handler: "handleStateMachineUpdatedEvent", topics: ["StateMachineUpdated(string,uint256)"] },

sdk/packages/indexer/scripts/templates/evm-chain.yaml.hbs

@@ -11,6 +11,10 @@ dataSources:
         file: ./abis/EthereumHost.abi.json
       chainLinkAggregatorV3:
         file: ./abis/ChainLinkAggregatorV3.abi.json
+      # Listed so the Erc4626Abi interface is always generated for the yield-vault handlers, even on
+      # chains with no configured vaults (e.g. testnet); the vault datasources reference it for decoding.
+      erc4626:
+        file: ./abis/Erc4626.abi.json
     mapping:
       file: ./dist/index.js
       handlers:
@@ -79,6 +83,40 @@ dataSources:
             topics:
               - 'DustSwept(address,uint256,address)'
   {{/if}}
+  {{#each yieldVaults}}
+  - kind: ethereum/Runtime
+    startBlock: {{../blockNumber}}
+    options:
+      abi: erc4626
+      address: '{{this.vault}}'
+    assets:
+      erc4626:
+        file: ./abis/Erc4626.abi.json
+    mapping:
+      file: ./dist/index.js
+      handlers:
+        - kind: ethereum/LogHandler
+          handler: handleVaultDepositEvent
+          filter:
+            topics:
+              - 'Deposit(address,address,uint256,uint256)'
+        - kind: ethereum/LogHandler
+          handler: handleVaultWithdrawEvent
+          filter:
+            topics:
+              - 'Withdraw(address,address,address,uint256,uint256)'
+  {{/each}}
+  {{#if yieldVaults.length}}
+  - kind: ethereum/Runtime
+    startBlock: {{blockNumber}}
+    mapping:
+      file: ./dist/index.js
+      handlers:
+        - handler: handleVaultSnapshotIndexing
+          kind: ethereum/BlockHandler
+          filter:
+            modulo: 50 # Daily LP yield snapshot; the handler dedupes per UTC day, so re-attempts bail cheaply.
+  {{/if}}
   - kind: ethereum/Runtime
     startBlock: {{blockNumber}}
     mapping:

sdk/packages/indexer/src/configs/abis/Erc4626.abi.json

@@ -0,0 +1,160 @@
+[
+	{
+		"type": "event",
+		"name": "Deposit",
+		"inputs": [
+			{
+				"name": "sender",
+				"type": "address",
+				"indexed": true,
+				"internalType": "address"
+			},
+			{
+				"name": "owner",
+				"type": "address",
+				"indexed": true,
+				"internalType": "address"
+			},
+			{
+				"name": "assets",
+				"type": "uint256",
+				"indexed": false,
+				"internalType": "uint256"
+			},
+			{
+				"name": "shares",
+				"type": "uint256",
+				"indexed": false,
+				"internalType": "uint256"
+			}
+		],
+		"anonymous": false
+	},
+	{
+		"type": "event",
+		"name": "Withdraw",
+		"inputs": [
+			{
+				"name": "sender",
+				"type": "address",
+				"indexed": true,
+				"internalType": "address"
+			},
+			{
+				"name": "receiver",
+				"type": "address",
+				"indexed": true,
+				"internalType": "address"
+			},
+			{
+				"name": "owner",
+				"type": "address",
+				"indexed": true,
+				"internalType": "address"
+			},
+			{
+				"name": "assets",
+				"type": "uint256",
+				"indexed": false,
+				"internalType": "uint256"
+			},
+			{
+				"name": "shares",
+				"type": "uint256",
+				"indexed": false,
+				"internalType": "uint256"
+			}
+		],
+		"anonymous": false
+	},
+	{
+		"type": "function",
+		"name": "asset",
+		"inputs": [],
+		"outputs": [
+			{
+				"name": "",
+				"type": "address",
+				"internalType": "address"
+			}
+		],
+		"stateMutability": "view"
+	},
+	{
+		"type": "function",
+		"name": "decimals",
+		"inputs": [],
+		"outputs": [
+			{
+				"name": "",
+				"type": "uint8",
+				"internalType": "uint8"
+			}
+		],
+		"stateMutability": "view"
+	},
+	{
+		"type": "function",
+		"name": "balanceOf",
+		"inputs": [
+			{
+				"name": "account",
+				"type": "address",
+				"internalType": "address"
+			}
+		],
+		"outputs": [
+			{
+				"name": "",
+				"type": "uint256",
+				"internalType": "uint256"
+			}
+		],
+		"stateMutability": "view"
+	},
+	{
+		"type": "function",
+		"name": "totalSupply",
+		"inputs": [],
+		"outputs": [
+			{
+				"name": "",
+				"type": "uint256",
+				"internalType": "uint256"
+			}
+		],
+		"stateMutability": "view"
+	},
+	{
+		"type": "function",
+		"name": "totalAssets",
+		"inputs": [],
+		"outputs": [
+			{
+				"name": "",
+				"type": "uint256",
+				"internalType": "uint256"
+			}
+		],
+		"stateMutability": "view"
+	},
+	{
+		"type": "function",
+		"name": "convertToAssets",
+		"inputs": [
+			{
+				"name": "shares",
+				"type": "uint256",
+				"internalType": "uint256"
+			}
+		],
+		"outputs": [
+			{
+				"name": "",
+				"type": "uint256",
+				"internalType": "uint256"
+			}
+		],
+		"stateMutability": "view"
+	}
+]