Nick: chrome cdp main | simple autoscaler

.github/workflows/autoscale.yml

@@ -0,0 +1,36 @@
+name: Simple Autoscaler
+on:
+  schedule:
+    - cron: '*/0.5 * * * *'
+
+env:
+  BULL_AUTH_KEY: ${{ secrets.BULL_AUTH_KEY }}
+  FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
+    
+jobs:
+  scale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: superfly/flyctl-actions/setup-flyctl@master
+      - name: Send GET request to check queues
+        run: |
+          response=$(curl --silent --max-time 180 https://api.firecrawl.dev/admin/${{ secrets.BULL_AUTH_KEY }}/autoscaler)
+          http_code=$(echo "$response" | jq -r '.status_code')
+          
+          mode=$(echo "$response" | jq -r '.mode')
+          count=$(echo "$response" | jq -r '.count')
+
+          echo "Mode: $mode"
+          echo "Count: $count"
+          
+          if [ "$mode" = "scale-descale" ]; then
+            flyctl scale count $count -c fly.staging.toml --process-group=worker --yes
+            echo "Scaled to $count machines."
+          else
+            echo "No scaling needed. Mode: $mode"
+          fi
+        env:
+          FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
+          BULL_AUTH_KEY: ${{ secrets.BULL_AUTH_KEY }}
+        working-directory: apps/api

apps/api/src/controllers/admin/queue.ts

@@ -4,6 +4,7 @@ import { Job } from "bullmq";
 import { Logger } from "../../lib/logger";
 import { getScrapeQueue } from "../../services/queue-service";
 import { checkAlerts } from "../../services/alerts";
+import { exec } from "node:child_process";
 
 export async function cleanBefore24hCompleteJobsController(
   req: Request,
@@ -54,7 +55,6 @@ export async function cleanBefore24hCompleteJobsController(
   }
 }
 
-
 export async function checkQueuesController(req: Request, res: Response) {
   try {
     await checkAlerts();
@@ -63,9 +63,9 @@ export async function checkQueuesController(req: Request, res: Response) {
     Logger.debug(`Failed to initialize alerts: ${error}`);
     return res.status(500).send("Failed to initialize alerts");
   }
-  }
+}
 
-  // Use this as a "health check" that way we dont destroy the server
+// Use this as a "health check" that way we dont destroy the server
 export async function queuesController(req: Request, res: Response) {
   try {
     const scrapeQueue = getScrapeQueue();
@@ -84,4 +84,71 @@ export async function queuesController(req: Request, res: Response) {
     Logger.error(error);
     return res.status(500).json({ error: error.message });
   }
+}
+
+export async function autoscalerController(req: Request, res: Response) {
+  try {
+    const maxNumberOfMachines = 100;
+    const minNumberOfMachines = 20;
+
+    const scrapeQueue = getScrapeQueue();
+
+    const [webScraperActive, webScraperWaiting, webScraperPriority] = await Promise.all([
+      scrapeQueue.getActiveCount(),
+      scrapeQueue.getWaitingCount(),
+      scrapeQueue.getPrioritizedCount(),
+    ]);
+
+    let waitingAndPriorityCount = webScraperWaiting + webScraperPriority;
+
+    // get number of machines active
+    const request = await fetch('https://api.machines.dev/v1/apps/firecrawl-scraper-js/machines',
+      {
+        headers: {
+          'Authorization': `Bearer ${process.env.FLY_API_TOKEN}`
         }
+      }
+    )
+    const machines = await request.json();
+    const activeMachines = machines.filter(machine => machine.state === 'started' || machine.state === "starting").length;
+
+    let targetMachineCount = activeMachines;
+
+    const baseScaleUp = 10;
+    const baseScaleDown = 5;
+
+    // Scale up logic
+    if (webScraperActive > 9000 || waitingAndPriorityCount > 2000) {
+      targetMachineCount = Math.min(maxNumberOfMachines, activeMachines + (baseScaleUp * 3));
+    } else if (webScraperActive > 5000 || waitingAndPriorityCount > 1000) {
+      targetMachineCount = Math.min(maxNumberOfMachines, activeMachines + (baseScaleUp * 2));
+    } else if (webScraperActive > 1000 || waitingAndPriorityCount > 500) {
+      targetMachineCount = Math.min(maxNumberOfMachines, activeMachines + baseScaleUp);
+    }
+
+    // Scale down logic
+    if (webScraperActive < 100 && waitingAndPriorityCount < 50) {
+      targetMachineCount = Math.max(minNumberOfMachines, activeMachines - (baseScaleDown * 3));
+    } else if (webScraperActive < 500 && waitingAndPriorityCount < 200) {
+      targetMachineCount = Math.max(minNumberOfMachines, activeMachines - (baseScaleDown * 2));
+    } else if (webScraperActive < 1000 && waitingAndPriorityCount < 500) {
+      targetMachineCount = Math.max(minNumberOfMachines, activeMachines - baseScaleDown);
+    }
+
+    if (targetMachineCount !== activeMachines) {
+      Logger.info(`🐂 Scaling from ${activeMachines} to ${targetMachineCount} - ${webScraperActive} active, ${webScraperWaiting} waiting`);
+      return res.status(200).json({
+        mode: "scale-descale",
+        count: targetMachineCount,
+      });
+    }
+
+    return res.status(200).json({
+      mode: "normal",
+      count: activeMachines,
+    });
+  } catch (error) {
+    Logger.error(error);
+    return res.status(500).send("Failed to initialize autoscaler");
+  }
+}

apps/api/src/routes/admin.ts

@@ -1,6 +1,7 @@
 import express from "express";
 import { redisHealthController } from "../controllers/admin/redis-health";
 import {
+  autoscalerController,
   checkQueuesController,
   cleanBefore24hCompleteJobsController,
   queuesController,
@@ -27,3 +28,8 @@ adminRouter.get(
   `/admin/${process.env.BULL_AUTH_KEY}/queues`,
   queuesController
 );
+
+adminRouter.get(
+  `/admin/${process.env.BULL_AUTH_KEY}/autoscaler`,
+  autoscalerController
+);

apps/api/src/scraper/WebScraper/single_url.ts

@@ -24,8 +24,8 @@ import { clientSideError } from "../../strings";
 dotenv.config();
 
 export const baseScrapers = [
-  "fire-engine",
   "fire-engine;chrome-cdp",
+  "fire-engine",
   "scrapingBee",
   process.env.USE_DB_AUTHENTICATION ? undefined : "playwright",
   "scrapingBeeLoad",
@@ -85,8 +85,8 @@ function getScrapingFallbackOrder(
   });
 
   let defaultOrder = [
-    !process.env.USE_DB_AUTHENTICATION ? undefined : "fire-engine",
     !process.env.USE_DB_AUTHENTICATION ? undefined : "fire-engine;chrome-cdp",
+    !process.env.USE_DB_AUTHENTICATION ? undefined : "fire-engine",
     "scrapingBee",
     process.env.USE_DB_AUTHENTICATION ? undefined : "playwright",
     "scrapingBeeLoad",