From d9479152da5b957901e7d404f382d21bfdae4cd9 Mon Sep 17 00:00:00 2001
From: Ladd Hoffman <laddhoffman@gmail.com>
Date: Wed, 15 May 2024 11:34:54 -0500
Subject: [PATCH] only stake half available REP if an error was encountered
 when evaluating a VP

---
 backend/src/event-handlers/validation-pools.js | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/backend/src/event-handlers/validation-pools.js b/backend/src/event-handlers/validation-pools.js
index 2d4ae35..beb8571 100644
--- a/backend/src/event-handlers/validation-pools.js
+++ b/backend/src/event-handlers/validation-pools.js
@@ -50,17 +50,25 @@ const start = async () => {
     const decisions = await Promise.mapSeries(deciders, (decider) => decider(pool, post));
     const inFavor = decisions.some((x) => x === true);
     const nullResult = decisions.some((x) => x === null);
+    const currentRep = await dao.balanceOf(await wallet.getAddress());
+    let stakeAmount = currentRep;
     if (!inFavor && nullResult) {
-      console.log(`Obtained a NULL RESULT for pool ${poolIndex}. Abstaining from the vote.`);
+      console.log(`Obtained a NULL RESULT for pool ${poolIndex}.`);
       // TODO: Retry?
       // TODO: Notify
-      return;
+      // Calculate the minimum stake S against the post, such that if the honest actors
+      // each stake S, the result will be enough to meet the win ratio.
+      // This way, we combat the threat of a truly invalid post,
+      // while reducing our exposure in the case that the error is unique to us.
+      // Assume 2/3 honest actors.
+      // S * (2/3) = 1/3
+      // S = 1/2;
+      stakeAmount = Math.ceil(currentRep / 2);
     }
     // Stake all available reputation
-    const currentRep = await dao.balanceOf(await wallet.getAddress());
-    console.log(`STAKING ${currentRep} ${inFavor ? 'in favor of' : 'against'} pool ${poolIndex}`);
+    console.log(`STAKING ${stakeAmount} ${inFavor ? 'in favor of' : 'against'} pool ${poolIndex}`);
     try {
-      await dao.stakeOnValidationPool(poolIndex, currentRep, inFavor);
+      await dao.stakeOnValidationPool(poolIndex, stakeAmount, inFavor);
     } catch (e) {
       // Maybe the end time passed?
       console.error(`STAKING failed, reason: ${e.reason}`);