Fix: polling fallback on failed websocket connection

tee-apps/sealed-bid-auction/.env.template

@@ -7,6 +7,9 @@ SOLVER_PRICE_TTL_SECONDS=600
 NEXT_NONCE_URL=
 IS_MAINNET=false
 
+#PagerDuty (optional - for alerting on WS failures)
+PD_INTEGRATION_KEY=
+
 # optional from blocks for historical event logging
 # these are useful if we miss events and want to rewind
 INTENT_OBSERVER_FROM_BLOCK_BASE=

tee-apps/sealed-bid-auction/script/server.ts

@@ -39,6 +39,7 @@ const fromBlockArbitrum = fromBlockEnvArbitrum ? BigInt(fromBlockEnvArbitrum) :
 const fromBlockEnvBase = process.env.INTENT_OBSERVER_FROM_BLOCK_BASE;
 const fromBlockBase = fromBlockEnvBase ? BigInt(fromBlockEnvBase) : null;
 const auctionPollingInterval = 500;
+const pagerDutyIntegrationKey = process.env.PD_INTEGRATION_KEY || null;
 
 const arbitrumSepoliaIntentObserver = new ViemIntentObserver(
     arbitrumClient,
@@ -48,7 +49,8 @@ const arbitrumSepoliaIntentObserver = new ViemIntentObserver(
     baseClient.publicClient.chain.id,
     BASE_T1_ERC_7683_CONTRACT_ADDRESS,
     auctionPollingInterval,
-    fromBlockArbitrum
+    fromBlockArbitrum,
+    pagerDutyIntegrationKey
 );
 const baseSepoliaIntentObserver = new ViemIntentObserver(
     baseClient,
@@ -58,7 +60,8 @@ const baseSepoliaIntentObserver = new ViemIntentObserver(
     arbitrumClient.publicClient.chain.id,
     ARBITRUM_T1_ERC_7683_CONTRACT_ADDRESS,
     auctionPollingInterval,
-    fromBlockBase
+    fromBlockBase,
+    pagerDutyIntegrationKey
 );
 
 async function main() {