added update_rule for incremental change

data_updating_rule.md

@@ -0,0 +1,25 @@
+# Abort-Safe Incremental JSONL Persistence Rule
+
+**Rule:** Persist state using an *append-only, fsync-backed JSONL log with atomic checkpoints*.
+
+**Requirements**
+- Write updates as **single-line JSON objects** (one logical mutation per line).
+- **Append only** (`O_APPEND`), never modify existing lines.
+- After each write batch, call **`fsync`** (or `File::sync_data`) before reporting success.
+- Treat a **line as committed only if it ends with `\n`**; ignore trailing partial lines on recovery.
+- Periodically create a **checkpoint**:
+  - Write full state to `state.tmp`
+  - `fsync`
+  - **Atomic rename** to `state.jsonl`
+- On startup:
+  - Load last checkpoint
+  - Replay log lines after it in order
+- On abort/panic/crash:
+  - No truncation
+  - Replay guarantees no data loss beyond last fsynced line
+
+**Outcome**
+- Crash/abort-safe
+- O(1) writes
+- Deterministic recovery
+- Minimal overhead

src/config.rs

@@ -21,21 +21,12 @@ pub struct Config {
     /// If set to "true", enables automatic VPN rotation between sessions
     #[serde(default)]
     pub enable_vpn_rotation: bool,
-
-    /// Number of tasks per session before rotating VPN
-    /// If set to 0, rotates VPN between economic and corporate phases
-    #[serde(default = "default_tasks_per_session")]
-    pub tasks_per_vpn_session: usize,
 }
 
 fn default_max_parallel_instances() -> usize {
     10
 }
 
-fn default_tasks_per_session() -> usize {
-    0 // 0 = rotate between economic/corporate
-}
-
 impl Default for Config {
     fn default() -> Self {
         Self {
@@ -45,7 +36,6 @@ impl Default for Config {
             max_parallel_instances: default_max_parallel_instances(),
             max_tasks_per_instance: 0,
             enable_vpn_rotation: false,
-            tasks_per_vpn_session: default_tasks_per_session(),
         }
     }
 }
@@ -93,11 +83,6 @@ impl Config {
             .parse::<bool>()
             .context("Failed to parse ENABLE_VPN_ROTATION as bool")?;
 
-        let tasks_per_vpn_session: usize = dotenvy::var("TASKS_PER_VPN_SESSION")
-            .unwrap_or_else(|_| "0".to_string())
-            .parse()
-            .context("Failed to parse TASKS_PER_VPN_SESSION as usize")?;
-
         Ok(Self {
             economic_start_date,
             corporate_start_date,
@@ -105,7 +90,6 @@ impl Config {
             max_parallel_instances,
             max_tasks_per_instance,
             enable_vpn_rotation,
-            tasks_per_vpn_session,
         })
     }
 

src/corporate/types.rs

@@ -79,10 +79,19 @@ pub struct CompanyInfo{
     pub securities: HashMap<String, Vec<FigiInfo>>, // ISIN -> Vec<FigiInfo>
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct YahooCompanyDetails {
+    pub ticker: String,
+    pub sector: Option<String>,
+    pub exchange: Option<String>,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct CompanyCrossPlatformInfo {
     pub name: String,
     pub isin_tickers_map: HashMap<String, Vec<String>>, // ISIN -> Tickers
+    pub sector: Option<String>,
+    pub exchange: Option<String>,
 }
 
 /// Warrant Info

src/corporate/update.rs

@@ -1,4 +1,4 @@
-// src/corporate/update.rs - COMPLETE STREAMING VERSION
+// src/corporate/update.rs - ABORT-SAFE VERSION WITH JSONL LOG
 
 use super::{scraper::*, storage::*, helpers::*, types::*, openfigi::*, yahoo::*};
 use crate::config::Config;
@@ -9,14 +9,17 @@ use crate::scraper::webdriver::ChromeDriverPool;
 use chrono::Local;
 use std::collections::HashMap;
 use std::sync::Arc;
+use std::sync::atomic::{AtomicBool, Ordering};
 
-/// Main update function - fully streaming, minimal memory usage
+pub async fn run_full_update(
-pub async fn run_full_update(_config: &Config, pool: &Arc<ChromeDriverPool>) -> anyhow::Result<()> {
+    _config: &Config, 
+    pool: &Arc<ChromeDriverPool>,
+    shutdown_flag: &Arc<AtomicBool>,
+) -> anyhow::Result<()> {
     logger::log_info("=== Corporate Update (STREAMING MODE) ===").await;
 
     let paths = DataPaths::new(".")?;
 
-    // Step 1: Download GLEIF CSV (don't load into memory)
     logger::log_info("Step 1: Downloading GLEIF CSV...").await;
     let gleif_csv_path = match download_isin_lei_csv().await? {
         Some(p) => {
@@ -29,14 +32,19 @@ pub async fn run_full_update(_config: &Config, pool: &Arc<ChromeDriverPool>) ->
         }
     };
 
-    // Step 2: Load OpenFIGI type lists (small, cached)
+    if shutdown_flag.load(Ordering::SeqCst) {
+        return Ok(());
+    }
+
     logger::log_info("Step 2: Loading OpenFIGI metadata...").await;
     load_figi_type_lists().await.ok();
     logger::log_info("  ✓ OpenFIGI metadata loaded").await;
 
-    // Step 3: Check mapping status and process only unmapped LEIs
+    if shutdown_flag.load(Ordering::SeqCst) {
+        return Ok(());
+    }
+
     logger::log_info("Step 3: Checking LEI-FIGI mapping status...").await;
-    
     let all_mapped = ensure_all_leis_mapped(&gleif_csv_path, None).await?;
     
     if !all_mapped {
@@ -45,7 +53,10 @@ pub async fn run_full_update(_config: &Config, pool: &Arc<ChromeDriverPool>) ->
         logger::log_info("  ✓ All LEIs successfully mapped").await;
     }
 
-    // Step 4: Build securities from FIGI data (streaming)
+    if shutdown_flag.load(Ordering::SeqCst) {
+        return Ok(());
+    }
+
     logger::log_info("Step 4: Building securities map (streaming)...").await;
     let date_dir = find_most_recent_figi_date_dir(&paths).await?;
     
@@ -57,22 +68,37 @@ pub async fn run_full_update(_config: &Config, pool: &Arc<ChromeDriverPool>) ->
         logger::log_warn("  ✗ No FIGI data directory found").await;
     }
 
-    // Step 5: Build companies JSONL (streaming from securities)
+    if shutdown_flag.load(Ordering::SeqCst) {
-    logger::log_info("Step 5: Building companies.jsonl (streaming)...").await;
+        return Ok(());
-    let count = build_companies_jsonl_streaming(&paths, pool).await?;
+    }
+
+    logger::log_info("Step 5: Building companies.jsonl (streaming with abort-safe persistence)...").await;
+    let count = build_companies_jsonl_streaming(&paths, pool, shutdown_flag).await?;
     logger::log_info(&format!("  ✓ Saved {} companies", count)).await;
 
-    // Step 6: Process events (using index, not full load)
+    if !shutdown_flag.load(Ordering::SeqCst) {
-    logger::log_info("Step 6: Processing events (using index)...").await;
+        logger::log_info("Step 6: Processing events (using index)...").await;
-    let _event_index = build_event_index(&paths).await?;
+        let _event_index = build_event_index(&paths).await?;
-    logger::log_info("  ✓ Event index built").await;
+        logger::log_info("  ✓ Event index built").await;
+    }
 
     logger::log_info("✓ Corporate update complete").await;
     Ok(())
 }
 
-/// Stream companies.jsonl creation from securities cache - INCREMENTAL MODE
+/// Abort-safe incremental JSONL persistence with atomic checkpoints
-async fn build_companies_jsonl_streaming(paths: &DataPaths, pool: &Arc<ChromeDriverPool>) -> anyhow::Result<usize> {
+/// 
+/// Implements the data_updating_rule.md specification:
+/// - Append-only JSONL log for all updates
+/// - fsync after each write batch
+/// - Atomic checkpoints via temp file + rename
+/// - Crash recovery by loading checkpoint + replaying log
+/// - Partial lines ignored during recovery
+async fn build_companies_jsonl_streaming(
+    paths: &DataPaths, 
+    pool: &Arc<ChromeDriverPool>,
+    shutdown_flag: &Arc<AtomicBool>,
+) -> anyhow::Result<usize> {
     let path = DataPaths::new(".")?;
     let corporate_path = path.data_dir().join("corporate").join("by_name");
     let securities_path = corporate_path.join("common_stocks.json");
@@ -82,59 +108,116 @@ async fn build_companies_jsonl_streaming(paths: &DataPaths, pool: &Arc<ChromeDri
         return Ok(0);
     }
     
-    // Load securities
     let content = tokio::fs::read_to_string(securities_path).await?;
     let securities: HashMap<String, CompanyInfo> = serde_json::from_str(&content)?;
     
     let companies_path = paths.data_dir().join("companies.jsonl");
+    let log_path = paths.data_dir().join("companies_updates.log");
     
     if let Some(parent) = companies_path.parent() {
         tokio::fs::create_dir_all(parent).await?;
     }
     
-    // Load existing companies into a map
+    // === RECOVERY PHASE 1: Load last checkpoint ===
     let mut existing_companies: HashMap<String, CompanyCrossPlatformInfo> = HashMap::new();
+    let mut processed_names: std::collections::HashSet<String> = std::collections::HashSet::new();
     
     if companies_path.exists() {
-        logger::log_info("Loading existing companies.jsonl...").await;
+        logger::log_info("Loading checkpoint from companies.jsonl...").await;
         let existing_content = tokio::fs::read_to_string(&companies_path).await?;
         for line in existing_content.lines() {
             if line.trim().is_empty() {
                 continue;
             }
+            // Only process complete lines (ending with proper JSON closing brace)
+            // This ensures we don't process partial writes from crashed processes
+            if !line.ends_with('}') {
+                logger::log_warn(&format!("Skipping incomplete checkpoint line: {}", &line[..line.len().min(50)])).await;
+                continue;
+            }
             match serde_json::from_str::<CompanyCrossPlatformInfo>(line) {
                 Ok(company) => {
+                    processed_names.insert(company.name.clone());
                     existing_companies.insert(company.name.clone(), company);
                 }
                 Err(e) => {
-                    logger::log_warn(&format!("Failed to parse existing company line: {}", e)).await;
+                    logger::log_warn(&format!("Failed to parse checkpoint line: {}", e)).await;
                 }
             }
         }
-        logger::log_info(&format!("Loaded {} existing companies", existing_companies.len())).await;
+        logger::log_info(&format!("Loaded checkpoint with {} companies", existing_companies.len())).await;
     }
     
-    // Create temporary file for atomic write
+    // === RECOVERY PHASE 2: Replay log after checkpoint ===
-    let temp_path = companies_path.with_extension("jsonl.tmp");
+    if log_path.exists() {
-    let mut file = tokio::fs::File::create(&temp_path).await?;
+        logger::log_info("Replaying update log...").await;
-    let mut count = 0;
+        let log_content = tokio::fs::read_to_string(&log_path).await?;
+        let mut replayed = 0;
+        for line in log_content.lines() {
+            if line.trim().is_empty() {
+                continue;
+            }
+            // Only replay complete lines (crash-safe: incomplete lines are ignored)
+            // A line is considered complete only if it ends with '\n' and valid JSON
+            if !line.ends_with('}') {
+                logger::log_warn(&format!("Skipping incomplete log line: {}", &line[..line.len().min(50)])).await;
+                continue;
+            }
+            match serde_json::from_str::<CompanyCrossPlatformInfo>(line) {
+                Ok(company) => {
+                    processed_names.insert(company.name.clone());
+                    existing_companies.insert(company.name.clone(), company);
+                    replayed += 1;
+                }
+                Err(e) => {
+                    logger::log_warn(&format!("Failed to parse log line: {}", e)).await;
+                }
+            }
+        }
+        if replayed > 0 {
+            logger::log_info(&format!("Replayed {} updates from log", replayed)).await;
+        }
+    }
+    
+    // === APPEND-ONLY LOG: Open in append mode with O_APPEND semantics ===
+    use tokio::fs::OpenOptions;
+    let mut log_file = OpenOptions::new()
+        .create(true)
+        .append(true)  // O_APPEND - atomic append operations
+        .open(&log_path)
+        .await?;
+    
+    let mut count = existing_companies.len();
     let mut updated_count = 0;
     let mut new_count = 0;
+    let checkpoint_interval = 50; // Create atomic checkpoint every 50 updates
+    let mut updates_since_checkpoint = 0;
     
     use tokio::io::AsyncWriteExt;
     
     for (name, company_info) in securities.iter() {
-        // Check if we already have this company
+        if shutdown_flag.load(Ordering::SeqCst) {
-        let existing_entry = existing_companies.remove(name);
+            logger::log_info("Shutdown requested - stopping company processing").await;
+            break;
+        }
+
+        // Skip if already processed (from checkpoint or log replay)
+        if processed_names.contains(name) {
+            continue;
+        }
+
+        let existing_entry = existing_companies.get(name).cloned();
         let is_update = existing_entry.is_some();
         
-        // Start with existing ISIN-ticker map or create new one
         let mut isin_tickers_map: HashMap<String, Vec<String>> = 
             existing_entry
-                .map(|e| e.isin_tickers_map)
+                .as_ref()
+                .map(|e| e.isin_tickers_map.clone())
                 .unwrap_or_default();
         
-        // Step 1: Extract unique ISIN-ticker pairs from FigiInfo
+        let mut sector = existing_entry.as_ref().and_then(|e| e.sector.clone());
+        let mut exchange = existing_entry.as_ref().and_then(|e| e.exchange.clone());
+        
         let mut unique_isin_ticker_pairs: HashMap<String, Vec<String>> = HashMap::new();
         
         for figi_infos in company_info.securities.values() {
@@ -144,7 +227,6 @@ async fn build_companies_jsonl_streaming(paths: &DataPaths, pool: &Arc<ChromeDri
                         .entry(figi_info.isin.clone())
                         .or_insert_with(Vec::new);
                     
-                    // Add FIGI ticker if present and not duplicate
                     if !figi_info.ticker.is_empty() && !tickers.contains(&figi_info.ticker) {
                         tickers.push(figi_info.ticker.clone());
                     }
@@ -152,79 +234,129 @@ async fn build_companies_jsonl_streaming(paths: &DataPaths, pool: &Arc<ChromeDri
             }
         }
         
-        // Step 2: Merge FIGI tickers into main map
         for (isin, figi_tickers) in unique_isin_ticker_pairs {
+            if shutdown_flag.load(Ordering::SeqCst) {
+                break;
+            }
+
             let tickers = isin_tickers_map
                 .entry(isin.clone())
                 .or_insert_with(Vec::new);
             
-            // Add FIGI tickers that aren't already present
             for figi_ticker in figi_tickers {
                 if !tickers.contains(&figi_ticker) {
                     tickers.push(figi_ticker);
                 }
             }
             
-            // Step 3: Check if we need to fetch Yahoo ticker for this ISIN
             let has_yahoo_ticker = tickers.iter().any(|t| t.starts_with("YAHOO:"));
             
-            if !has_yahoo_ticker {
+            if !has_yahoo_ticker && !shutdown_flag.load(Ordering::SeqCst) {
-                logger::log_info(&format!("Fetching Yahoo ticker for {} (ISIN: {})", name, isin)).await;
+                logger::log_info(&format!("Fetching Yahoo details for {} (ISIN: {})", name, isin)).await;
-                let yahoo_result = scrape_ticker_by_isin(pool, &isin).await;
                 
-                match yahoo_result {
+                match scrape_company_details_by_isin(pool, &isin).await {
-                    Ok(result) => {
+                    Ok(Some(details)) => {
-                        let log_msg = match &result {
+                        logger::log_info(&format!("✓ Found Yahoo ticker {} for ISIN {}", details.ticker, isin)).await;
-                            YahooTickerResult::Found(ticker) => 
-                                format!("✓ Found Yahoo ticker {} for ISIN {}", ticker, isin),
-                            YahooTickerResult::NoResults => 
-                                format!("○ No search results for ISIN {}", isin),
-                            YahooTickerResult::NotFound => 
-                                format!("○ Empty ticker result for ISIN {}", isin),
-                            YahooTickerResult::AmbiguousResults => 
-                                format!("⚠ Ambiguous results for ISIN {}", isin),
-                        };
                         
-                        if result.is_found() {
+                        tickers.push(format!("YAHOO:{}", details.ticker));
-                            logger::log_info(&log_msg).await;
+                        
-                        } else {
+                        if sector.is_none() && details.sector.is_some() {
-                            logger::log_warn(&log_msg).await;
+                            sector = details.sector.clone();
+                            logger::log_info(&format!("  Sector: {}", details.sector.as_ref().unwrap())).await;
                         }
                         
-                        tickers.push(result.to_tagged_string());
+                        if exchange.is_none() && details.exchange.is_some() {
+                            exchange = details.exchange.clone();
+                            logger::log_info(&format!("  Exchange: {}", details.exchange.as_ref().unwrap())).await;
+                        }
+                    },
+                    Ok(None) => {
+                        logger::log_warn(&format!("◯ No search results for ISIN {}", isin)).await;
+                        tickers.push("YAHOO:NO_RESULTS".to_string());
                     },
                     Err(e) => {
+                        if shutdown_flag.load(Ordering::SeqCst) {
+                            break;
+                        }
                         logger::log_warn(&format!("✗ Yahoo lookup error for ISIN {}: {}", isin, e)).await;
-                        tickers.push("YAHOO:ERROR".to_string());
                     }
                 }
-            } else {
-                logger::log_warn(&format!("Skipping Yahoo lookup for {} ISIN {} - already has Yahoo data", name, isin)).await;
             }
         }
         
-        // Only write if we have ticker data
+        if shutdown_flag.load(Ordering::SeqCst) {
+            break;
+        }
+
         if !isin_tickers_map.is_empty() {
             let company_entry = CompanyCrossPlatformInfo {
                 name: name.clone(),
                 isin_tickers_map,
+                sector,
+                exchange,
             };
             
+            // === APPEND-ONLY: Write single-line JSON with fsync ===
+            // This guarantees the line is either fully written or not at all
             let line = serde_json::to_string(&company_entry)?;
+            log_file.write_all(line.as_bytes()).await?;
+            log_file.write_all(b"\n").await?;
+            log_file.flush().await?;
             
-            file.write_all(line.as_bytes()).await?;
+            // Critical: fsync to ensure durability before considering write successful
-            file.write_all(b"\n").await?;
+            // This prevents data loss on power failure or kernel panic
+            log_file.sync_data().await?;
             
-            // Flush after each write for crash safety
+            // Update in-memory state ONLY after successful fsync
-            file.flush().await?;
+            processed_names.insert(name.clone());
+            existing_companies.insert(name.clone(), company_entry);
             
             count += 1;
+            updates_since_checkpoint += 1;
+            
             if is_update {
                 updated_count += 1;
             } else {
                 new_count += 1;
             }
             
+            // === ATOMIC CHECKPOINT: Periodically create checkpoint ===
+            // This reduces recovery time by snapshotting current state
+            if updates_since_checkpoint >= checkpoint_interval {
+                logger::log_info(&format!("Creating checkpoint at {} companies...", count)).await;
+                
+                let checkpoint_tmp = companies_path.with_extension("jsonl.tmp");
+                let mut checkpoint_file = tokio::fs::File::create(&checkpoint_tmp).await?;
+                
+                // Write all current state to temporary checkpoint file
+                for company in existing_companies.values() {
+                    let line = serde_json::to_string(company)?;
+                    checkpoint_file.write_all(line.as_bytes()).await?;
+                    checkpoint_file.write_all(b"\n").await?;
+                }
+                
+                checkpoint_file.flush().await?;
+                checkpoint_file.sync_all().await?;
+                drop(checkpoint_file);
+                
+                // Atomic rename - this is the commit point
+                // After this succeeds, the checkpoint is visible
+                tokio::fs::rename(&checkpoint_tmp, &companies_path).await?;
+                
+                // Clear log after successful checkpoint
+                // Any entries before this point are now captured in the checkpoint
+                drop(log_file);
+                tokio::fs::remove_file(&log_path).await.ok();
+                log_file = OpenOptions::new()
+                    .create(true)
+                    .append(true)
+                    .open(&log_path)
+                    .await?;
+                
+                updates_since_checkpoint = 0;
+                logger::log_info("✓ Checkpoint created and log cleared").await;
+            }
+            
             if count % 10 == 0 {
                 logger::log_info(&format!("Progress: {} companies ({} new, {} updated)", count, new_count, updated_count)).await;
                 tokio::task::yield_now().await;
@@ -232,29 +364,39 @@ async fn build_companies_jsonl_streaming(paths: &DataPaths, pool: &Arc<ChromeDri
         }
     }
     
-    // Write any remaining existing companies that weren't in securities
+    // === FINAL CHECKPOINT: Write complete final state ===
-    for (_name, company) in existing_companies {
+    // This ensures we don't need to replay the log on next startup
-        let line = serde_json::to_string(&company)?;
+    if !shutdown_flag.load(Ordering::SeqCst) && updates_since_checkpoint > 0 {
-        file.write_all(line.as_bytes()).await?;
+        logger::log_info("Creating final checkpoint...").await;
-        file.write_all(b"\n").await?;
+        
-        file.flush().await?;
+        let checkpoint_tmp = companies_path.with_extension("jsonl.tmp");
-        count += 1;
+        let mut checkpoint_file = tokio::fs::File::create(&checkpoint_tmp).await?;
-        logger::log_warn(&format!("Preserved existing company: {}", _name)).await;
+        
+        for company in existing_companies.values() {
+            let line = serde_json::to_string(company)?;
+            checkpoint_file.write_all(line.as_bytes()).await?;
+            checkpoint_file.write_all(b"\n").await?;
+        }
+        
+        checkpoint_file.flush().await?;
+        checkpoint_file.sync_all().await?;
+        drop(checkpoint_file);
+        
+        // Atomic rename makes final checkpoint visible
+        tokio::fs::rename(&checkpoint_tmp, &companies_path).await?;
+        
+        // Clean up log
+        drop(log_file);
+        tokio::fs::remove_file(&log_path).await.ok();
+        
+        logger::log_info("✓ Final checkpoint created").await;
     }
     
-    // Ensure all data is written
+    logger::log_info(&format!("Completed: {} total companies ({} new, {} updated)", count, new_count, updated_count)).await;
-    file.sync_all().await?;
-    drop(file);
-    
-    // Atomic rename: replace old file with new one
-    tokio::fs::rename(&temp_path, &companies_path).await?;
-    
-    logger::log_info(&format!("✓ Completed: {} total companies ({} new, {} updated)", count, new_count, updated_count)).await;
     
     Ok(count)
 }
 
-/// Find most recent FIGI date directory
 async fn find_most_recent_figi_date_dir(paths: &DataPaths) -> anyhow::Result<Option<std::path::PathBuf>> {
     let map_cache_dir = paths.cache_gleif_openfigi_map_dir();
     
@@ -284,8 +426,6 @@ async fn find_most_recent_figi_date_dir(paths: &DataPaths) -> anyhow::Result<Opt
     Ok(Some(dates[0].1.clone()))
 }
 
-
-
 pub struct ProcessResult {
     pub changes: Vec<CompanyEventChange>,
 }

src/corporate/yahoo.rs

@@ -8,6 +8,7 @@ use tokio::{time::{Duration as TokioDuration, sleep}};
 use std::{sync::Arc};
 use anyhow::{anyhow, Result};
 
+const YAHOO_COMPANY_EXTRACTION_JS: &str = include_str!("yahoo_company_extraction.js");
 /// Mapping existing 
 
 /// getting historical stock price data daily (xxxx - 2025) and hourly (last 30 days)
@@ -20,6 +21,16 @@ pub enum YahooTickerResult {
     AmbiguousResults,
 }
 
+#[derive(Debug, Deserialize)]
+pub struct ExtractionResult {
+    status: String,
+    ticker: Option<String>,
+    sector: Option<String>,
+    exchange: Option<String>,
+    #[serde(default)]
+    error_message: Option<String>,
+}
+
 impl YahooTickerResult {
     pub fn to_tagged_string(&self) -> String {
         match self {
@@ -42,69 +53,52 @@ impl YahooTickerResult {
     }
 }
 
-pub async fn scrape_ticker_by_isin(
+pub async fn scrape_company_details_by_isin(
     pool: &Arc<ChromeDriverPool>,
     isin: &str,
-) -> anyhow::Result<YahooTickerResult> {
+) -> anyhow::Result<Option<YahooCompanyDetails>> {
     let isin = isin.to_string();
-    pool.execute(format!("https://finance.yahoo.com/lookup?s={}", isin), move |client| {
+    pool.execute(format!("https://finance.yahoo.com/lookup/?s={}", isin), move |client| {
         let isin = isin.clone();
         Box::pin(async move {
             sleep(TokioDuration::from_millis(1000)).await;
             reject_yahoo_cookies(&client).await?;
             sleep(TokioDuration::from_millis(1000)).await;
-            extract_ticker_by_isin(&client, &isin).await
+            extract_company_details(&client, &isin).await
         })
     }).await
 }
 
-pub async fn extract_ticker_by_isin(
+pub async fn extract_company_details(
     client: &Client,
     _isin: &str,
-) -> Result<YahooTickerResult> {
+) -> Result<Option<YahooCompanyDetails>> {
-    //let search_url = format!("https://finance.yahoo.com/lookup?s={}", isin);
+    // Execute the JavaScript extraction script
-
+    let result = client.execute(YAHOO_COMPANY_EXTRACTION_JS, vec![]).await?;
-    // Check for "No results found" message
-    if client.find(Locator::Css(".noData")).await.is_ok() {
-        return Ok(YahooTickerResult::NoResults);
-    }
-
-    // Wait for results table
-    let table = match client
-        .wait()
-        .for_element(Locator::Css("table[data-test='lookup-table']"))
-        .await
-    {
-        Ok(t) => t,
-        Err(_) => return Ok(YahooTickerResult::NoResults),
-    };
     
-    // Find first row
+    // Parse the JSON result
-    let first_row = match table
+    let extraction: ExtractionResult = serde_json::from_value(result)
-        .find(Locator::Css("tbody tr"))
+        .map_err(|e| anyhow!("Failed to parse extraction result: {}", e))?;
-        .await
-    {
-        Ok(row) => row,
-        Err(_) => return Ok(YahooTickerResult::NoResults),
-    };
     
-    // Extract ticker from first cell
+    match extraction.status.as_str() {
-    let ticker_cell = first_row
+        "found" => {
-        .find(Locator::Css("td:nth-child(1)"))
+            if let Some(ticker) = extraction.ticker {
-        .await
+                Ok(Some(YahooCompanyDetails {
-        .map_err(|e| anyhow!("Failed to find ticker cell: {}", e))?;
+                    ticker,
-    
+                    sector: extraction.sector,
-    let ticker = ticker_cell
+                    exchange: extraction.exchange,
-        .text()
+                }))
-        .await
+            } else {
-        .map_err(|e| anyhow!("Failed to get ticker text: {}", e))?
+                Ok(None)
-        .trim()
+            }
-        .to_string();
+        },
-    
+        "no_results" => Ok(None),
-    if ticker.is_empty() {
+        "not_found" => Ok(None),
-        Ok(YahooTickerResult::NotFound)
+        "error" => {
-    } else {
+            let error_msg = extraction.error_message.unwrap_or_else(|| "Unknown error".to_string());
-        Ok(YahooTickerResult::Found(ticker))
+            Err(anyhow!("JavaScript extraction error: {}", error_msg))
+        },
+        _ => Ok(None),
     }
 }
 
@@ -276,9 +270,9 @@ pub async fn extract_earnings_events(client: &Client, ticker: &str) -> Result<Ve
     }
 
     if events.is_empty() {
-        eprintln!("Warning: No earnings events extracted for ticker {}", ticker);
+        logger::log_warn(&format!("Warning: No earnings events extracted for ticker {}", ticker)).await;
     } else {
-        println!("Extracted {} earnings events for {}", events.len(), ticker);
+        logger::log_info(&format!("Extracted {} earnings events for {}", events.len(), ticker)).await;
     }
 
     Ok(events)

src/corporate/yahoo_company_extraction.js

@@ -0,0 +1,67 @@
+// yahoo_company_extraction.js
+// JavaScript extraction script for Yahoo Finance company details
+// Used to extract ticker, sector, and exchange from Yahoo Finance search results
+
+(function() {
+    try {
+        // Check for "No results found" message
+        const noDataElement = document.querySelector('.noData');
+        if (noDataElement) {
+            return { status: 'no_results', ticker: null, sector: null, exchange: null };
+        }
+
+        // Find the results table
+        const table = document.querySelector('table.markets-table');
+        if (!table) {
+            return { status: 'no_results', ticker: null, sector: null, exchange: null };
+        }
+
+        // Find the first row in tbody
+        const firstRow = table.querySelector('tbody tr');
+        if (!firstRow) {
+            return { status: 'no_results', ticker: null, sector: null, exchange: null };
+        }
+
+        // Extract ticker from first column (td:nth-child(1))
+        const tickerCell = firstRow.querySelector('td:nth-child(1)');
+        const ticker = tickerCell ? tickerCell.textContent.trim() : '';
+
+        if (!ticker) {
+            return { status: 'not_found', ticker: null, sector: null, exchange: null };
+        }
+
+        // Extract sector from column 4 (td:nth-child(4) > span > div > a)
+        const sectorCell = firstRow.querySelector('td:nth-child(4) span div a');
+        let sector = sectorCell ? sectorCell.textContent.trim() : '';
+        
+        // Normalize empty/invalid values to null
+        if (!sector || sector === '-' || sector === 'N/A') {
+            sector = null;
+        }
+
+        // Extract exchange from column 6 (td:nth-child(6) > span)
+        const exchangeCell = firstRow.querySelector('td:nth-child(6) span');
+        let exchange = exchangeCell ? exchangeCell.textContent.trim() : '';
+        
+        // Normalize empty/invalid values to null
+        if (!exchange || exchange === '-' || exchange === 'N/A') {
+            exchange = null;
+        }
+
+        return {
+            status: 'found',
+            ticker: ticker,
+            sector: sector,
+            exchange: exchange
+        };
+
+    } catch (error) {
+        return {
+            status: 'error',
+            error_message: error.toString(),
+            ticker: null,
+            sector: null,
+            exchange: null
+        };
+    }
+})();

src/economic/scraper.rs

@@ -1,5 +1,6 @@
 // src/economic/scraper.rs
 use super::types::{EconomicEvent};
+use event_backtest_engine::logger;
 use fantoccini::Client;
 use tokio::time::{sleep, Duration};
 
@@ -49,6 +50,6 @@ pub async fn extract_events(client: &Client) -> anyhow::Result<Vec<EconomicEvent
             });
         }
     }
-    println!("Extracted {} high-impact events", events.len());
+    logger::log_info(&format!("Extracted {} high-impact events", events.len())).await;
     Ok(events)
 }

src/main.rs

@@ -13,18 +13,17 @@ use scraper::webdriver::ChromeDriverPool;
 use util::directories::DataPaths;
 use util::{logger, opnv};
 use std::sync::Arc;
+use std::sync::atomic::{AtomicBool, Ordering};
 
 #[tokio::main]
 async fn main() -> Result<()> {
     cleanup_all_proxy_containers().await.ok();
 
-    // Load configuration from .env
     let config = Config::load().map_err(|err| {
         eprintln!("Failed to load config: {}", err);
         err
     })?;
 
-    // Initialize paths and logger
     let paths = DataPaths::new(".")?;
     logger::init_debug_logger(paths.logs_dir()).await.ok();
     logger::log_info("=== Event Backtest Engine Started ===").await;
@@ -35,61 +34,36 @@ async fn main() -> Result<()> {
         config.enable_vpn_rotation
     )).await;
 
-    // === Step 1: Fetch fresh VPNBook credentials and .ovpn files (if rotation enabled) ===
+    // Simple shutdown flag
+    let shutdown_flag = Arc::new(AtomicBool::new(false));
+
+    // === Step 1: Fetch VPNBook configs ===
     let proxy_pool: Option<Arc<DockerVpnProxyPool>> = if config.enable_vpn_rotation {
-        logger::log_info("VPN Rotation Enabled — Fetching latest VPNBook configs").await;
+        logger::log_info("VPN Rotation Enabled – Fetching latest VPNBook configs").await;
-
+        let temp_pool = Arc::new(ChromeDriverPool::new_with_proxy_and_task_limit(config.max_parallel_instances, None, config.max_tasks_per_instance).await?);
-        // We only need 1 Chrome instance to scrape vpnbook.com (no proxy yet)
-        let temp_pool = Arc::new(ChromeDriverPool::new(1).await?);
         let (username, password, _files) = opnv::fetch_vpnbook_configs(&temp_pool, paths.cache_dir()).await?;
-
         logger::log_info(&format!("VPNBook credentials → User: {}", username)).await;
 
-        // Count how many distinct servers (subfolders) we have in cache/openvpn/
         let server_count = std::fs::read_dir(paths.cache_openvpn_dir())?
             .filter(|e| e.as_ref().unwrap().path().is_dir())
             .count();
 
         if server_count == 0 {
-            logger::log_warn("No VPN servers found — continuing without VPN").await;
+            logger::log_warn("No VPN servers found – continuing without VPN").await;
             None
         } else {
-            logger::log_info(&format!("Found {} VPN servers — starting Docker proxy containers", server_count)).await;
+            logger::log_info(&format!("Found {} VPN servers – starting Docker proxy containers", server_count)).await;
-
+            let pp = Arc::new(DockerVpnProxyPool::new(paths.cache_openvpn_dir(), username, password).await?);
-            let pp = Arc::new(
-                DockerVpnProxyPool::new(paths.cache_openvpn_dir(), username, password).await?
-            );
-
-            // Verify all proxies are working before proceeding
-            logger::log_info("Verifying all proxy connections...").await;
-            let mut all_working = true;
-            for i in 0..pp.num_proxies() {
-                match pp.test_proxy_connection(i).await {
-                    Ok(ip) => {
-                        logger::log_info(&format!("  Proxy {}: working with IP: {}", i + 1, ip)).await;
-                    }
-                    Err(e) => {
-                        logger::log_error(&format!("  Proxy {}: FAILED - {}", i + 1, e)).await;
-                        all_working = false;
-                    }
-                }
-            }
-
-            if !all_working {
-                logger::log_warn("Some proxies failed, but continuing with working ones...").await;
-            } else {
-                logger::log_info("All proxies verified and ready!").await;
-            }
 
             logger::log_info(&format!("All {} Docker proxy containers started and ready", pp.num_proxies())).await;
             Some(pp)
         }
     } else {
-        logger::log_info("VPN rotation disabled — using direct connection").await;
+        logger::log_info("VPN rotation disabled – using direct connection").await;
         None
     };
 
-    // === Step 2: Initialize the main ChromeDriver pool (with proxy if enabled) ===
+    // === Step 2: Initialize ChromeDriver pool ===
     let pool_size = config.max_parallel_instances;
     let task_limit = config.max_tasks_per_instance;
 
@@ -105,17 +79,23 @@ async fn main() -> Result<()> {
 
     logger::log_info(&format!("ChromeDriver pool ready with {} instances", pool_size)).await;
 
-    // === Step 3: Graceful Ctrl+C handler ===
+    // === Step 3: Ctrl+C handler ===
     {
+        let shutdown_flag_clone = Arc::clone(&shutdown_flag);
         let pool_clone = Arc::clone(&pool);
         let proxy_clone = proxy_pool.clone();
 
         tokio::spawn(async move {
             tokio::signal::ctrl_c().await.ok();
+            logger::log_info("Ctrl+C received – shutting down gracefully...").await;
+            
+            // Set flag first
+            shutdown_flag_clone.store(true, Ordering::SeqCst);
+            
+            // Wait a bit for tasks to notice
+            tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;
 
-            logger::log_info("Ctrl+C received — shutting down gracefully...").await;
+            // Cleanup
-
-            // Now works: &*pool_clone derefs Arc → &ChromeDriverPool
             if let Err(e) = (&*pool_clone).shutdown().await {
                 logger::log_error(&format!("Error during pool shutdown: {}", e)).await;
             }
@@ -129,31 +109,34 @@ async fn main() -> Result<()> {
             }
 
             let _ = cleanup_all_proxy_containers().await;
-
             std::process::exit(0);
         });
     }
     
-    // === Step 4: Run the actual scraping jobs ===
+    // === Step 4: Run scraping jobs ===
     logger::log_info("--- Starting ECONOMIC data update ---").await;
     economic::run_full_update(&config, &pool).await?;
     logger::log_info("Economic update completed").await;
 
-    logger::log_info("--- Starting CORPORATE data update ---").await;
+    if !shutdown_flag.load(Ordering::SeqCst) {
-    corporate::run_full_update(&config, &pool).await?;
+        logger::log_info("--- Starting CORPORATE data update ---").await;
-    logger::log_info("Corporate update completed").await;
+        corporate::run_full_update(&config, &pool, &shutdown_flag).await?;
-
+        logger::log_info("Corporate update completed").await;
-    // === Step 5: Final cleanup ===
-    logger::log_info("Shutting down ChromeDriver pool...").await;
-    pool.shutdown().await?;
-
-    if let Some(pp) = proxy_pool {
-        logger::log_info("Stopping Docker VPN proxy containers...").await;
-        pp.shutdown().await?;
-        // CLEANUP ANY LEFTOVER CONTAINERS FROM PREVIOUS RUNS
-        cleanup_all_proxy_containers().await.ok();
     }
 
-    logger::log_info("=== Application finished successfully ===").await;
+    // === Step 5: Final cleanup ===
+    if !shutdown_flag.load(Ordering::SeqCst) {
+        logger::log_info("Shutting down ChromeDriver pool...").await;
+        pool.shutdown().await?;
+
+        if let Some(pp) = proxy_pool {
+            logger::log_info("Stopping Docker VPN proxy containers...").await;
+            pp.shutdown().await?;
+            cleanup_all_proxy_containers().await.ok();
+        }
+
+        logger::log_info("=== Application finished successfully ===").await;
+    }
+    
     Ok(())
 }

src/scraper/docker_vpn_proxy.rs

@@ -106,10 +106,18 @@ impl DockerVpnProxyPool {
                     working_ports.push(port);
                 }
                 Ok(None) => {
-                    crate::util::logger::log_warn(&format!("✓ Container {} on port {} ready but IP detection failed", 
+                    let logs = Command::new("docker")
-                        container_name, port)).await;
+                        .args(["logs", "--tail", "20", &container_name])
-                    working_containers.push(container_name);
+                        .output()
-                    working_ports.push(port);
+                        .await
+                        .ok()
+                        .and_then(|output| String::from_utf8_lossy(&output.stdout).to_string().into());
+                    
+                    crate::util::logger::log_error(&format!("✗ Container {} on port {} ready but IP detection failed. Logs: {:?}", 
+                        container_name, port, logs)).await;
+                    failed_count += 1;
+                    // Clean up failed container
+                    let _ = Self::cleanup_container(&container_name).await;
                 }
                 Err(e) => {
                     // Get container logs to debug
@@ -309,25 +317,6 @@ impl DockerVpnProxyPool {
         true
     }
 
-    /// Test if a specific proxy is working
-    pub async fn test_proxy_connection(&self, index: usize) -> Result<String> {
-        let port = self.proxy_ports[index];
-        let proxy_url = format!("socks5://localhost:{}", port);
-        
-        let client = reqwest::Client::builder()
-            .proxy(reqwest::Proxy::all(&proxy_url)?)
-            .timeout(Duration::from_secs(10))
-            .build()?;
-        
-        let response = client.get("http://checkip.amazonaws.com")
-            .send()
-            .await?
-            .text()
-            .await?;
-        
-        Ok(response.trim().to_string())
-    }
-
     pub fn get_proxy_url(&self, index: usize) -> String {
         let port = self.proxy_ports[index % self.proxy_ports.len()];
         format!("socks5://localhost:{}", port)

src/scraper/webdriver.rs

@@ -19,11 +19,15 @@ pub struct ChromeDriverPool {
     semaphore: Arc<Semaphore>,
     /// Optional Docker-based proxy pool (one proxy per Chrome instance)
     proxy_pool: Option<Arc<DockerVpnProxyPool>>,
+    /// Whether rotation is enabled (uses half of instances at a time)
+    rotation_enabled: bool,
+    /// Index for round-robin instance selection (when rotation is enabled)
+    next_instance: Arc<Mutex<usize>>,
 }
 
 impl ChromeDriverPool {
 /// Creates a new pool without any proxy (direct connection).
-    pub async fn new(pool_size: usize) -> Result<Self> {
+    pub async fn _new(pool_size: usize) -> Result<Self> {
         Self::new_with_proxy_and_task_limit(pool_size, None, 0).await
     }
 
@@ -40,22 +44,53 @@ impl ChromeDriverPool {
         Self::new_with_proxy_and_task_limit(pool_size, proxy_pool, 0).await
     }
 
-    /// Full constructor: supports proxy + task limiting.
+    /// Full constructor: supports proxy + task limiting + rotation.
+    /// 
+    /// When rotation is enabled, only half of the instances are used at once,
+    /// rotating to the other half when task limits are reached.
+    /// 
+    /// The actual pool_size is constrained by:
+    /// - max_parallel_instances from config (pool_size_limit parameter)
+    /// - Available proxies from proxy_pool (if provided)
+    /// 
+    /// Uses the minimum of these constraints to determine actual pool size.
     pub async fn new_with_proxy_and_task_limit(
-        pool_size: usize,
+        pool_size_limit: usize,
         proxy_pool: Option<Arc<DockerVpnProxyPool>>,
         max_tasks_per_instance: usize,
     ) -> Result<Self> {
-        let mut instances = Vec::with_capacity(pool_size);
+        // Determine actual pool size based on available resources
+        let actual_pool_size = if let Some(ref pp) = proxy_pool {
+            let available_proxies = pp.num_proxies();
+            pool_size_limit.min(available_proxies)
+        } else {
+            pool_size_limit
+        };
+
+        if actual_pool_size == 0 {
+            return Err(anyhow!("Pool size must be at least 1"));
+        }
+
+        // Rotation is enabled when task limiting is active
+        let rotation_enabled = max_tasks_per_instance > 0;
+
+        let mut instances = Vec::with_capacity(actual_pool_size);
 
         crate::util::logger::log_info(&format!(
-            "Initializing ChromeDriver pool with {} instances{}...",
+            "Initializing ChromeDriver pool with {} instances{}{}...",
-            pool_size,
+            actual_pool_size,
-            if proxy_pool.is_some() { " (each using a unique Docker SOCKS5 proxy)" } else { "" }
+            if proxy_pool.is_some() { " (each using a unique Docker SOCKS5 proxy)" } else { "" },
+            if rotation_enabled { " with rotation enabled" } else { "" }
         ))
         .await;
 
-        for i in 0..pool_size {
+        if rotation_enabled && actual_pool_size < 2 {
+            crate::util::logger::log_warn(
+                "Rotation enabled but pool has < 2 instances - rotation will be limited"
+            ).await;
+        }
+
+        for i in 0..actual_pool_size {
             let proxy_url = proxy_pool
                 .as_ref()
                 .map(|pp| pp.get_proxy_url(i));
@@ -68,12 +103,22 @@ impl ChromeDriverPool {
 
         Ok(Self {
             instances,
-            semaphore: Arc::new(Semaphore::new(pool_size)),
+            semaphore: Arc::new(Semaphore::new(actual_pool_size)),
             proxy_pool,
+            rotation_enabled,
+            next_instance: Arc::new(Mutex::new(0)),
         })
     }
 
     /// Execute a scraping task using an available instance from the pool.
+    /// 
+    /// When rotation is enabled:
+    /// - Uses only half of the instances at a time
+    /// - Rotates to the other half when an instance reaches its task limit
+    /// - Cycles through instances in round-robin fashion within the active half
+    /// 
+    /// When rotation is disabled:
+    /// - Uses all instances with random selection
     pub async fn execute<T, F, Fut>(&self, url: String, parse: F) -> Result<T>
     where
         T: Send + 'static,
@@ -82,8 +127,81 @@ impl ChromeDriverPool {
     {
         let _permit = self.semaphore.acquire().await.map_err(|_| anyhow!("Pool closed"))?;
 
-        // Round-robin selection
+        let index = if self.rotation_enabled {
-        let index = rand::random_range(..self.instances.len());
+            // Rotation mode: use only half of instances at a time
+            let total_instances = self.instances.len();
+            let half_size = (total_instances + 1) / 2; // Round up for odd numbers
+            
+            let mut next_idx = self.next_instance.lock().await;
+            let base_idx = *next_idx;
+            let mut selected_idx = base_idx;
+            let mut found_in_current_half = false;
+            
+            // Try to find an available instance in the current half
+            for offset in 0..half_size {
+                let candidate_idx = (base_idx + offset) % half_size;
+                
+                // Check if this instance has reached its task limit
+                let instance = &self.instances[candidate_idx];
+                let guard = instance.lock().await;
+                
+                if guard.max_tasks_per_instance == 0 || 
+                   guard.task_count < guard.max_tasks_per_instance {
+                    // This instance is available
+                    *next_idx = (candidate_idx + 1) % half_size;
+                    selected_idx = candidate_idx;
+                    found_in_current_half = true;
+                    drop(guard);
+                    break;
+                } else {
+                    drop(guard);
+                }
+            }
+            
+            if !found_in_current_half {
+                // All instances in current half are at limit, switch to other half
+                crate::util::logger::log_info(
+                    "Current half saturated, rotating to other half of instances"
+                ).await;
+                
+                let other_half_start = half_size;
+                let other_half_size = total_instances - half_size;
+                
+                // Find available instance in other half
+                let mut found_in_other_half = false;
+                for offset in 0..other_half_size {
+                    let candidate_idx = other_half_start + offset;
+                    
+                    let instance = &self.instances[candidate_idx];
+                    let guard = instance.lock().await;
+                    
+                    if guard.max_tasks_per_instance == 0 || 
+                       guard.task_count < guard.max_tasks_per_instance {
+                        // Switch to this half for future requests
+                        *next_idx = offset;
+                        selected_idx = candidate_idx;
+                        found_in_other_half = true;
+                        drop(guard);
+                        break;
+                    } else {
+                        drop(guard);
+                    }
+                }
+                
+                if !found_in_other_half {
+                    // All instances saturated - use round-robin anyway
+                    selected_idx = *next_idx % total_instances;
+                    *next_idx = (*next_idx + 1) % total_instances;
+                }
+            }
+            
+            drop(next_idx);
+            selected_idx
+        } else {
+            // Non-rotation mode: random selection as before
+            rand::random_range(..self.instances.len())
+        };
+
         let instance = self.instances[index].clone();
         let mut guard = instance.lock().await;
 
@@ -91,7 +209,8 @@ impl ChromeDriverPool {
 
         if guard.max_tasks_per_instance > 0 {
             crate::util::logger::log_info(&format!(
-                "Instance task count: {}/{}",
+                "Instance {} task count: {}/{}",
+                index,
                 guard.get_task_count(),
                 guard.max_tasks_per_instance
             ))
@@ -130,6 +249,20 @@ impl ChromeDriverPool {
     pub fn get_number_of_instances(&self) -> usize {
         self.instances.len()
     }
+
+    /// Returns whether rotation is enabled
+    pub fn is_rotation_enabled(&self) -> bool {
+        self.rotation_enabled
+    }
+
+    /// Returns the size of each half when rotation is enabled
+    pub fn get_rotation_half_size(&self) -> usize {
+        if self.rotation_enabled {
+            (self.instances.len() + 1) / 2
+        } else {
+            self.instances.len()
+        }
+    }
 }
 
 /// Represents a single instance of chromedriver process, optionally bound to a VPN.