Automated Risk Assessment Log Parsing Pipeline

Create a complex Bash script that can parse massive financial risk assessment log files from trading platforms, extracting critical anomaly indicators and performance metrics. The script must handle log files over 50GB, support multiple log formats from different trading systems, and generate real-time JSON summaries with statistical risk calculations. Include robust error handling, performance logging, and the ability to trigger alerts via email or Slack when specific risk thresholds are exceeded.