Log.cls is a standardized log formatter for putting data into salesforce debug logs in a clean and efficient manner. The idea, is to make the debug data easy to find in the 1+ mb of text that each apex execution context can produce.

Log.cls

/**
 * Created by kpoorman on 3/25/17.
 * Log provides standardized methods for logging data to
 *    debug logs in a structured, easy to find way.
 * All methods are static by design. This should be 0 setup
 *    or at least 0 in code setup.
 *
 * Future versions may pull configuration from
 *    custom metadata #safeHarbor
 */

Public Class Log {
  
  Private Static String logHeader   = '';
  Private Static String logFooter   = '';

  /**
   * Stores the count of times the log method has been invoked
   *    in *this* apex execution context.
   */
  Private Static Integer logExecutionCount = 0;

  Public Static Void debug(Object toLog){
    logHeader = 'START DEBUG LOG - ' + Log.logExecutionCount;
    logFooter = 'END DEBUG LOG - ' + + Log.logExecutionCount;
    log(toLog, '#');
  }

  Public Static Void error(Object toLog){
    logHeader = 'START ERROR LOG - ' + Log.logExecutionCount;
    logFooter = 'END ERROR LOG - ' + + Log.logExecutionCount;
    log(toLog, '%');
  }

  /**
   *
   */
  Private Static Void log(Object toLog, String borderChar){
    List<object> toLogList = new List<object>();
    try {
      toLogList = (list<object>) toLog;
    } catch (Exception e){
      system.debug(e);
    }
    if(toLogList.size() > 0) {
      String stringVersion = '';
      for (Integer i = 0; i < toLogList.size(); i++) {
        stringVersion += '[' + String.valueOf(i).leftPad(4) + ']' + toLogList[i] + '\n';
      }
      system.debug('\n\n' + logHeader.center(80, borderChar) + '\n\n' + stringVersion + '\n\n' + logFooter.center(80, borderChar) + '\n\n');
    } else{
      system.debug('\n\n' + logHeader.center(80, borderChar) + '\n\n' + toLog + '\n\n' + logFooter.center(80, borderChar) + '\n\n');
    }
    Log.logExecutionCount++;
  }
}