From efca18bf579310dbc3c5af2337fa5ef587172a47 Mon Sep 17 00:00:00 2001
From: Sadeequ <70214653+Sadeequ@users.noreply.github.com>
Date: Sat, 27 Jun 2026 08:20:14 +0000
Subject: [PATCH] Fixed concentration risk alert and validator implementation
 [skip ci]

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 validator_implmt.md | 20 ++++++++++++++++++++
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+I implemented depositor concentration risk alerts and a withdrawal queue with fair ordering as requested.
+
+For depositor concentration alerts:
+
+Created RiskService in src/analytics/risk.service.ts that calculates depositor concentration hourly using SQL aggregation
+Added depositorConcentrationThreshold column to Vault entity (default 0.5 for 50% threshold)
+Extended NotificationType enum with DEPOSITOR_CONCENTRATION type
+Integrated RiskService into AnalyticsModule and exposed via GET /vaults/:id/risk-metrics endpoint
+Service sends notifications to vault owners when any depositor exceeds the threshold
+For withdrawal queue with fair ordering:
+
+Added QUEUED status to WithdrawalStatus enum
+Created WithdrawalQueueService to manage FIFO processing of withdrawals when liquidity is insufficient
+Modified VaultsService.withdrawFromVault to:
+Process withdrawals immediately when sufficient liquidity exists
+Queue withdrawals (set status QUEUED) when insufficient liquidity
+Process queue after successful deposits
+Added controller endpoints for queue position and estimated wait time
+Updated VaultsModule to include WithdrawalQueueService
+The validation pipe was already properly configured in main.ts with ValidationPipe({ whitelist: true, forbidNonWhitelisted: true, transform: true, transformOptions: { enableImplicitConversion: true } }), so no changes were needed there.
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