[英]Siddhi how to use statistics
Recently I want my siddhi program to show some statistic result. 最近,我希望我的siddhi程序显示一些统计结果。 However it did not work out really well.
但是,效果不是很好。
Basically I followed this user guide to create an example app. 基本上,我遵循此用户指南来创建示例应用程序。 Then I went to Siddhi Query Guide page to add the statistics part.
然后我去了Siddhi Query Guide页面,添加了统计部分。 The main class looks like this:
主类如下所示:
String siddhiApp =
"@App:name('TestApp') " +
"@App:statistics(interval = '1') " +
"define stream StockEventStream (symbol string, price float, volume long); " +
" " +
"@info(name = 'query1') " +
"from StockEventStream#window.length(5) " +
"select symbol, sum(price) as price, sum(volume) as volume " +
"group by symbol " +
"insert into AggregateStockStream ;";
SiddhiManager siddhiManager = new SiddhiManager();
SiddhiAppRuntime siddhiAppRuntime = siddhiManager.createSiddhiAppRuntime(siddhiApp);
siddhiAppRuntime.addCallback("AggregateStockStream", new StreamCallback() {
@Override
public void receive(Event[] events) {
EventPrinter.print(events);
}
});
InputHandler inputHandler = siddhiAppRuntime.getInputHandler("StockEventStream");
//Start SiddhiApp runtime
siddhiAppRuntime.start();
//Sending events to Siddhi
inputHandler.send(new Object[]{"IBM", 100f, 100L});
Thread.sleep(1000);
inputHandler.send(new Object[]{"IBM", 200f, 300L});
inputHandler.send(new Object[]{"WSO2", 60f, 200L} );
Thread.sleep(1000);
inputHandler.send(new Object[]{"WSO2", 70f, 400L});
inputHandler.send(new Object[]{"GOOG", 50f, 30L});
Thread.sleep(1000);
inputHandler.send(new Object[]{"IBM", 200f, 400L});
Thread.sleep(2000);
inputHandler.send(new Object[]{"WSO2", 70f, 50L});
Thread.sleep(2000);
inputHandler.send(new Object[]{"WSO2", 80f, 400L});
inputHandler.send(new Object[]{"GOOG", 60f, 30L});
//Shutdown SiddhiApp runtime
siddhiAppRuntime.shutdown();
//Shutdown Siddhi
siddhiManager.shutdown();
However the output did not show the count and flow rate of the stream instead the output was only 但是,输出未显示流的数量和流率,而仅显示了
[Event{timestamp=1523613242078, data=[IBM, 100.0, 100], isExpired=false}]
[Event{timestamp=1523613243107, data=[IBM, 300.0, 400], isExpired=false}]
[Event{timestamp=1523613243107, data=[WSO2, 60.0, 200], isExpired=false}]
[Event{timestamp=1523613244107, data=[WSO2, 130.0, 600], isExpired=false}]
[Event{timestamp=1523613244107, data=[GOOG, 50.0, 30], isExpired=false}]
2018/4/13 下午5:54:05
============================================================
-- Gauges ----------------------------------------------------------------------
org.wso2.siddhi.SiddhiApps.TestApp.Siddhi.Queries.query1.memory
[Event{timestamp=1523613245120, data=[IBM, 400.0, 700], isExpired=false}]
[Event{timestamp=1523613247136, data=[WSO2, 200.0, 650], isExpired=false}]
[Event{timestamp=1523613249137, data=[WSO2, 220.0, 850], isExpired=false}]
[Event{timestamp=1523613249137, data=[GOOG, 110.0, 60], isExpired=false}]
There is only a Gauge without showing anything. 只有一个量规而不显示任何东西。 Did I miss any extension package?
我错过任何扩展包了吗? Or am I using Statistics command in wrong way?
还是我以错误的方式使用了统计命令? Thank you for asking!
谢谢你的慰问!
I just want to close this question as I figured it out myself. 我只是想自己解决这个问题。 This problem happened as I used Java 10 as JDK.
当我将Java 10用作JDK时,发生了此问题。 The solution is to use java 1.8
解决方法是使用Java 1.8
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.