From ba11c539f69c85baa918d117ed9d1242b0ade849 Mon Sep 17 00:00:00 2001
From: Filip Dunder <fdundjer@outlook.com>
Date: Sat, 27 Apr 2024 17:18:46 +0200
Subject: [PATCH] feat: filter cache

---
 filters/burn.filter.ts      | 14 +++++++++++++-
 filters/mutable.filter.ts   | 13 ++++++++++++-
 filters/renounced.filter.ts | 16 +++++++++++++++-
 3 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/filters/burn.filter.ts b/filters/burn.filter.ts
index 226699f..6ec5dd0 100644
--- a/filters/burn.filter.ts
+++ b/filters/burn.filter.ts
@@ -4,13 +4,25 @@ import { LiquidityPoolKeysV4 } from '@raydium-io/raydium-sdk';
 import { logger } from '../helpers';
 
 export class BurnFilter implements Filter {
+  private cachedResult: FilterResult | undefined = undefined;
+
   constructor(private readonly connection: Connection) {}
 
   async execute(poolKeys: LiquidityPoolKeysV4): Promise<FilterResult> {
+    if (this.cachedResult) {
+      return this.cachedResult;
+    }
+
     try {
       const amount = await this.connection.getTokenSupply(poolKeys.lpMint, this.connection.commitment);
       const burned = amount.value.uiAmount === 0;
-      return { ok: burned, message: burned ? undefined : "Burned -> Creator didn't burn LP" };
+      const result = { ok: burned, message: burned ? undefined : "Burned -> Creator didn't burn LP" };
+
+      if (result.ok) {
+        this.cachedResult = result;
+      }
+
+      return result;
     } catch (e: any) {
       if (e.code == -32602) {
         return { ok: true };
diff --git a/filters/mutable.filter.ts b/filters/mutable.filter.ts
index 24aad5a..2debbfa 100644
--- a/filters/mutable.filter.ts
+++ b/filters/mutable.filter.ts
@@ -8,6 +8,7 @@ import { logger } from '../helpers';
 
 export class MutableFilter implements Filter {
   private readonly errorMessage: string[] = [];
+  private cachedResult: FilterResult | undefined = undefined;
 
   constructor(
     private readonly connection: Connection,
@@ -25,6 +26,10 @@ export class MutableFilter implements Filter {
   }
 
   async execute(poolKeys: LiquidityPoolKeysV4): Promise<FilterResult> {
+    if (this.cachedResult) {
+      return this.cachedResult;
+    }
+
     try {
       const metadataPDA = getPdaMetadataKey(poolKeys.baseMint);
       const metadataAccount = await this.connection.getAccountInfo(metadataPDA.publicKey, this.connection.commitment);
@@ -47,7 +52,13 @@ export class MutableFilter implements Filter {
         message.push('has no socials');
       }
 
-      return { ok: ok, message: ok ? undefined : `MutableSocials -> Token ${message.join(' and ')}` };
+      const result = { ok: ok, message: ok ? undefined : `MutableSocials -> Token ${message.join(' and ')}` };
+
+      if (!mutable) {
+        this.cachedResult = result;
+      }
+
+      return result;
     } catch (e) {
       logger.error({ mint: poolKeys.baseMint }, `MutableSocials -> Failed to check ${this.errorMessage.join(' and ')}`);
     }
diff --git a/filters/renounced.filter.ts b/filters/renounced.filter.ts
index 1894094..d9edf1a 100644
--- a/filters/renounced.filter.ts
+++ b/filters/renounced.filter.ts
@@ -6,6 +6,7 @@ import { logger } from '../helpers';
 
 export class RenouncedFreezeFilter implements Filter {
   private readonly errorMessage: string[] = [];
+  private cachedResult: FilterResult | undefined = undefined;
 
   constructor(
     private readonly connection: Connection,
@@ -22,6 +23,10 @@ export class RenouncedFreezeFilter implements Filter {
   }
 
   async execute(poolKeys: LiquidityPoolKeysV4): Promise<FilterResult> {
+    if (this.cachedResult) {
+      return this.cachedResult;
+    }
+
     try {
       const accountInfo = await this.connection.getAccountInfo(poolKeys.baseMint, this.connection.commitment);
       if (!accountInfo?.data) {
@@ -42,7 +47,16 @@ export class RenouncedFreezeFilter implements Filter {
         message.push('freeze');
       }
 
-      return { ok: ok, message: ok ? undefined : `RenouncedFreeze -> Creator can ${message.join(' and ')} tokens` };
+      const result = {
+        ok: ok,
+        message: ok ? undefined : `RenouncedFreeze -> Creator can ${message.join(' and ')} tokens`,
+      };
+
+      if (result.ok) {
+        this.cachedResult = result;
+      }
+
+      return result;
     } catch (e) {
       logger.error(
         { mint: poolKeys.baseMint },