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apps/data-service/src/examples/batch-processing-examples.ts

@@ -2,21 +2,30 @@
  * Example usage of the new functional batch processing approach
  */
 
-import { processItems, processSymbols, processProxies, processBatchJob } from '../utils/batch-helpers';
+import { processItems, processBatchJob } from '../utils/batch-helpers';
 import { queueManager } from '../services/queue.service';
 
 // Example 1: Process a list of symbols for live data
 export async function exampleSymbolProcessing() {
   const symbols = ['AAPL', 'GOOGL', 'MSFT', 'TSLA', 'AMZN'];
   
-  const result = await processSymbols(symbols, queueManager, {
-    operation: 'live-data',
-    service: 'market-data', 
-    provider: 'yahoo',
-    totalDelayMs: 60000, // 1 minute total
-    useBatching: false,  // Process directly
-    priority: 1
-  });
+  const result = await processItems(
+    symbols,
+    (symbol, index) => ({ 
+      symbol, 
+      index,
+      source: 'batch-processing' 
+    }),
+    queueManager,
+    {
+      totalDelayMs: 60000, // 1 minute total
+      useBatching: false,  // Process directly
+      priority: 1,
+      service: 'market-data',
+      provider: 'yahoo',
+      operation: 'live-data'
+    }
+  );
   
   console.log('Symbol processing result:', result);
   // Output: { jobsCreated: 5, mode: 'direct', totalItems: 5, duration: 1234 }
@@ -30,12 +39,24 @@ export async function exampleProxyProcessing() {
     // ... more proxies
   ];
   
-  const result = await processProxies(proxies, queueManager, {
-    totalDelayMs: 3600000, // 1 hour total
-    useBatching: true,     // Use batch mode
-    batchSize: 100,        // 100 proxies per batch
-    priority: 2
-  });
+  const result = await processItems(
+    proxies,
+    (proxy, index) => ({ 
+      proxy, 
+      index,
+      source: 'batch-processing' 
+    }),
+    queueManager,
+    {
+      totalDelayMs: 3600000, // 1 hour total
+      useBatching: true,     // Use batch mode
+      batchSize: 100,        // 100 proxies per batch
+      priority: 2,
+      service: 'proxy',
+      provider: 'proxy-service',
+      operation: 'check-proxy'
+    }
+  );
   
   console.log('Proxy processing result:', result);
   // Output: { jobsCreated: 10, mode: 'batch', totalItems: 1000, batchesCreated: 10, duration: 2345 }
@@ -81,15 +102,15 @@ export async function exampleBatchJobProcessor(jobData: any) {
   return result;
 }
 
-// Example: Simple functional approach
+// Example: Simple functional approach using generic processItems
 /*
-await processSymbols(symbols, queueManager, {
-  operation: 'live-data',
-  service: 'data-service',
-  provider: 'yahoo', 
+await processItems(symbols, (symbol, index) => ({ symbol, index }), queueManager, {
   totalDelayMs: 3600000,
   useBatching: true,
   batchSize: 200,
-  priority: 2
+  priority: 2,
+  service: 'data-service',
+  provider: 'yahoo',
+  operation: 'live-data'
 });
 */

apps/data-service/src/providers/proxy.provider.ts

@@ -14,27 +14,38 @@ const getEvery24HourCron = (): string => {
 };
 
 export const proxyProvider: ProviderConfig = {
-  name: 'proxy-service',
-  service: 'proxy',
-  operations: {      'fetch-and-check': async (payload: { sources?: string[] }) => {
+  name: 'proxy-provider',
+  service: 'data-service',
+  operations: {    'fetch-and-check': async (payload: { sources?: string[] }) => {
       const { proxyService } = await import('./proxy.tasks');
       const { queueManager } = await import('../services/queue.service');
-      const { processProxies } = await import('../utils/batch-helpers');
+      const { processItems } = await import('../utils/batch-helpers');
 
       const proxies = await proxyService.fetchProxiesFromSources();
       
       if (proxies.length === 0) {
         return { proxiesFetched: 0, jobsCreated: 0 };
-      }      // Use simplified functional approach
-      const result = await processProxies(proxies, queueManager, {
-        totalDelayMs: parseInt(process.env.PROXY_VALIDATION_HOURS || '4') * 60 * 60 * 1000,
-        batchSize: parseInt(process.env.PROXY_BATCH_SIZE || '200'),
-        useBatching: process.env.PROXY_DIRECT_MODE !== 'true',
-        priority: 2,
-        service: 'proxy',
-        provider: 'proxy-service',
-        operation: 'check-proxy'
-      });return {
+      }
+
+      // Use generic function with routing parameters
+      const result = await processItems(
+        proxies,
+        (proxy, index) => ({ 
+          proxy, 
+          index,
+          source: 'batch-processing' 
+        }),
+        queueManager,
+        {
+          totalDelayMs: parseInt(process.env.PROXY_VALIDATION_HOURS || '4') * 60 * 60 * 1000,
+          batchSize: parseInt(process.env.PROXY_BATCH_SIZE || '200'),
+          useBatching: process.env.PROXY_DIRECT_MODE !== 'true',
+          priority: 2,
+          service: 'data-service',
+          provider: 'proxy-provider',
+          operation: 'check-proxy'
+        }
+      );return {
         proxiesFetched: result.totalItems,
         jobsCreated: result.jobsCreated,
         mode: result.mode,

apps/data-service/src/utils/batch-helpers.ts

@@ -30,6 +30,8 @@ export interface BatchResult {
 
 // Cache instance for payload storage
 let cacheProvider: CacheProvider | null = null;
+let cacheInitialized = false;
+let cacheInitPromise: Promise<void> | null = null;
 
 function getCache(): CacheProvider {
   if (!cacheProvider) {
@@ -42,6 +44,29 @@ function getCache(): CacheProvider {
   return cacheProvider;
 }
 
+async function ensureCacheReady(): Promise<void> {
+  if (cacheInitialized) {
+    return;
+  }
+  
+  if (cacheInitPromise) {
+    return cacheInitPromise;
+  }
+  
+  cacheInitPromise = (async () => {
+    const cache = getCache();
+    try {
+      await cache.waitForReady(10000);
+      cacheInitialized = true;
+    } catch (error) {
+      logger.warn('Cache initialization timeout, proceeding anyway', { error });
+      // Don't throw - let operations continue with potential fallback
+    }
+  })();
+  
+  return cacheInitPromise;
+}
+
 /**
  * Main function - processes items either directly or in batches
  */
@@ -163,9 +188,9 @@ async function processBatched<T>(
         name: 'process-batch',
         data: {
           type: 'process-batch',
-          service: 'batch-processor',
-          provider: 'batch',
-          operation: 'process-batch-items',
+          service: options.service || 'generic',
+          provider: options.provider || 'generic',
+          operation: options.operation || 'generic',
           payload: {
             payloadKey,
             batchIndex,
@@ -222,9 +247,9 @@ export async function processBatchJob(jobData: any, queue: QueueService): Promis
       name: 'process-item',
       data: {
         type: 'process-item',
-        service: options.service || 'data-service',
+        service: options.service || 'generic',
         provider: options.provider || 'generic',
-        operation: options.operation || 'process-item',
+        operation: options.operation || 'generic',
         payload: processor(item, index),
         priority: options.priority || 1
       },
@@ -267,11 +292,10 @@ async function storePayload<T>(
   processor: (item: T, index: number) => any,
   options: ProcessOptions
 ): Promise<string> {
+  // Ensure cache is ready using shared initialization
+  await ensureCacheReady();
+  
   const cache = getCache();
-  
-  // Wait for cache to be ready before storing
-  await cache.waitForReady(5000);
-  
   const key = `payload_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
   
   const payload = {
@@ -282,9 +306,9 @@ async function storePayload<T>(
       priority: options.priority || 1,
       retries: options.retries || 3,
       // Store routing information for later use
-      service: options.service || 'data-service',
+      service: options.service || 'generic',
       provider: options.provider || 'generic',
-      operation: options.operation || 'process-item'
+      operation: options.operation || 'generic'
     },
     createdAt: Date.now()
   };
@@ -306,10 +330,10 @@ async function storePayload<T>(
 }
 
 async function loadPayload(key: string): Promise<any> {
-  const cache = getCache();
+  // Ensure cache is ready using shared initialization
+  await ensureCacheReady();
   
-  // Wait for cache to be ready before loading
-  await cache.waitForReady(5000);
+  const cache = getCache();
   
   logger.debug('Loading batch payload', { 
     key, 
@@ -365,70 +389,4 @@ async function addJobsInChunks(queue: QueueService, jobs: any[], chunkSize = 100
   return allCreatedJobs;
 }
 
-// Convenience functions for common use cases
 
-export async function processSymbols(
-  symbols: string[],
-  queue: QueueService,
-  options: {
-    operation: string;
-    service: string;
-    provider: string;
-    totalDelayMs: number;
-    useBatching?: boolean;
-    batchSize?: number;
-    priority?: number;
-  }
-): Promise<BatchResult> {
-  return processItems(
-    symbols,
-    (symbol, index) => ({ 
-      symbol, 
-      index,
-      source: 'batch-processing' 
-    }),
-    queue,
-    {
-      totalDelayMs: options.totalDelayMs,
-      batchSize: options.batchSize || 100,
-      priority: options.priority || 1,
-      useBatching: options.useBatching || false,
-      service: options.service,
-      provider: options.provider,
-      operation: options.operation
-    }
-  );
-}
-
-export async function processProxies(
-  proxies: any[],
-  queue: QueueService,
-  options: {
-    totalDelayMs: number;
-    useBatching?: boolean;
-    batchSize?: number;
-    priority?: number;
-    service?: string;
-    provider?: string;
-    operation?: string;
-  }
-): Promise<BatchResult> {
-  return processItems(
-    proxies,
-    (proxy, index) => ({ 
-      proxy, 
-      index,
-      source: 'batch-processing' 
-    }),
-    queue,
-    {
-      totalDelayMs: options.totalDelayMs,
-      batchSize: options.batchSize || 200,
-      priority: options.priority || 2,
-      useBatching: options.useBatching || true,
-      service: options.service || 'data-service',
-      provider: options.provider || 'proxy-service',
-      operation: options.operation || 'check-proxy'
-    }
-  );
-}

docs/batch-processing-migration.md

@@ -50,24 +50,14 @@ const result = await processSymbols(['AAPL', 'GOOGL'], queueManager, {
   provider: 'yahoo',
   totalDelayMs: 300000,
   useBatching: false,
-  priority: 1
+  priority: 1,
+  service: 'market-data',
+  provider: 'yahoo',
+  operation: 'live-data'
 });
 ```
 
-### 3. `processProxies()` - Proxy validation
-
-```typescript
-import { processProxies } from '../utils/batch-helpers';
-
-const result = await processProxies(proxies, queueManager, {
-  totalDelayMs: 3600000,
-  useBatching: true,
-  batchSize: 200,
-  priority: 2
-});
-```
-
-### 4. `processBatchJob()` - Worker batch handler
+### 3. `processBatchJob()` - Worker batch handler
 
 ```typescript
 import { processBatchJob } from '../utils/batch-helpers';