content: package com.ctrip.framework.apollo.tracer.spi;
  
  /**
   * @author Jason Song(song_s@ctrip.com)
   */
  public interface MessageProducer {
    /**
     * Log an error.
     *
     * @param cause root cause exception
     */
    public void logError(Throwable cause);
  
    /**
     * Log an error.
     *
     * @param cause root cause exception
     */
    public void logError(String message, Throwable cause);
  
    /**
     * Log an event in one shot with SUCCESS status.
     *
     * @param type event type
     * @param name event name
     */
    public void logEvent(String type, String name);
  
    /**
     * Log an event in one shot.
     *
     * @param type           event type
     * @param name           event name
     * @param status         "0" means success, otherwise means error code
     * @param nameValuePairs name value pairs in the format of "a=1&b=2&..."
     */
    public void logEvent(String type, String name, String status, String nameValuePairs);
  
    /**
     * Create a new transaction with given type and name.
     *
     * @param type transaction type
     * @param name transaction name
     */
    public Transaction newTransaction(String type, String name);
  }
  