DropWizard Custom Reporter

Question

我正在嘗試爲DropWizard指標創建一個自定義記者，但無法找到任何資源或示例來展示如何通過擴展ScheduledReporter來創建一個。我可以通過跟蹤現有的記者（CSV，SLF4J等）來擴展這個類，但是我在哪裏註冊？

這裏是習俗記者的摘錄，我嘗試註冊：

public class DbReporter extends ScheduledReporter { 
    private final Connection connection; 
    private final Clock clock; 

    public static DbReporter.Builder forRegistry(MetricRegistry registry) { 
     return new DbReporter.Builder(registry); 
    } 

    private DbReporter(MetricRegistry registry, Connection connection, Clock clock, MetricFilter filter, TimeUnit rateUnit, TimeUnit durationUnit) { 
     super(registry, "db-reporter", filter, rateUnit, durationUnit); 
     this.connection = connection; 
     this.clock = clock; 
    } 

    //... 

    public static class Builder { 
     private final MetricRegistry registry; 
     private Connection connection; 
     private TimeUnit rateUnit; 
     private TimeUnit durationUnit; 
     private MetricFilter filter; 
     private Clock clock; 

     private Builder(MetricRegistry registry) { 
      this.registry = registry; 
      this.connection = null; 
      this.rateUnit = TimeUnit.SECONDS; 
      this.durationUnit = TimeUnit.MILLISECONDS; 
      this.filter = MetricFilter.ALL; 
      this.clock = Clock.defaultClock(); 
     } 

     public DbReporter.Builder outputTo(Connection connection) { 
      this.connection = connection; 
      return this; 
     } 

     public DbReporter.Builder convertRatesTo(TimeUnit rateUnit) { 
      this.rateUnit = rateUnit; 
      return this; 
     } 

     public DbReporter.Builder convertDurationsTo(TimeUnit durationUnit) { 
      this.durationUnit = durationUnit; 
      return this; 
     } 

     public DbReporter.Builder filter(MetricFilter filter) { 
      this.filter = filter; 
      return this; 
     } 

     public DbReporter build() { 
      return new DbReporter(this.registry, this.connection, this.clock, this.filter, this.rateUnit, this.durationUnit); 
     } 
    } 
} 

而且，這是正確的方式來創建一個自定義的記者或者是有任何其他方式？

在此先感謝.-

Answer 1

是的，你可以用同樣的方法實現它們。至於註冊，通常在DW的實例化Metrics之後，通常在主應用程序中完成。

例如，在您的run方法：

@Override 
    public void run(final Configuration configuration, 
        final Environment environment) { 
     log.info(String.format("Starting %s server with version: %s", getName(), configuration.getVersion())); 

     CsvReporter.forRegistry(environment.metrics()).build(new File("path/to/csv")); 
    } 

希望幫助，

阿圖爾