Light learning using tsung on elasticsearch

Today, we will learn another software tool, Tsung. As this is just a introduction course, we will not go into details like interpret the statistics if it make sense. This is course plan to introduce how you quickly install, setup, test and show results using tsung. We want quickly acquaint distributed load testing using tsung. Let's first understand what tsung is.

Tsung is an open-source multi-protocol distributed load testing tool. It can be used to stress HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP and Jabber/XMPP servers. Tsung is a free software released under the GPLv2 license. That we like sir!

Okay, http is very common and let's pick elasticsearch 1.6.0 for this test. You can download elasticsearch from elastic.co , extract the content and just launch from command line. See below.

 user@localhost:~/Desktop/elasticsearch-1.6.0/bin$ ./elasticsearch  
 [2015-07-04 09:46:10,756][INFO ][node           ] [Futurist] version[1.6.0], pid[16404], build[cdd3ac4/2015-06-09T13:36:34Z]  
 [2015-07-04 09:46:10,757][INFO ][node           ] [Futurist] initializing ...  
 [2015-07-04 09:46:10,762][INFO ][plugins         ] [Futurist] loaded [], sites []  
 [2015-07-04 09:46:10,863][INFO ][env           ] [Futurist] using [1] data paths, mounts [[/ (/dev/sda5)]], net usable_space [15.4gb], net total_space [215.2gb], types [ext3]  
 [2015-07-04 09:46:13,833][INFO ][node           ] [Futurist] initialized  
 [2015-07-04 09:46:13,834][INFO ][node           ] [Futurist] starting ...  
 [2015-07-04 09:46:13,960][INFO ][transport        ] [Futurist] bound_address {inet[/0:0:0:0:0:0:0:0:9300]}, publish_address {inet[/192.168.1.2:9300]}  
 [2015-07-04 09:46:13,978][INFO ][discovery        ] [Futurist] elasticsearch/eSG-tzQuQdCz5QKIomYm5Q  
 [2015-07-04 09:46:17,774][INFO ][cluster.service     ] [Futurist] new_master [Futurist][eSG-tzQuQdCz5QKIomYm5Q][VerticalHorizon][inet[/192.168.1.2:9300]], reason: zen-disco-join (elected_as_master)  
 [2015-07-04 09:46:17,809][INFO ][http           ] [Futurist] bound_address {inet[/0:0:0:0:0:0:0:0:9200]}, publish_address {inet[/192.168.1.2:9200]}  
 [2015-07-04 09:46:17,810][INFO ][node           ] [Futurist] started  
 [2015-07-04 09:46:17,934][INFO ][gateway         ] [Futurist] recovered [0] indices into cluster_state  

A single node elasticsearch with no index nor mapping. We just wanna quickly use elasticsearch as software under test.

Next, let's install tsung. If you are using debian, that's a good news! See below.

 $ sudo apt-get install tsung  

easy peasy. Okay, now let's create a directory tsung in user home directory. Then create two files. See below.

 user@localhost:~$ mkdir tsung  
 user@localhost:~$ cd tsung  
 user@localhost:~/tsung$ cat query.json   
 {"size":10,"query":{"filtered":{"query":{"match_all":{}}}}}  
 $ cat tsung.xml  
 <?xml version="1.0" encoding="utf-8"?>  
 <!DOCTYPE tsung SYSTEM "/usr/share/tsung/tsung-1.0.dtd" []>  
 <tsung loglevel="info">  
   
  <clients>  
   <client host="localhost" use_controller_vm="true" cpu="1" maxusers="30000000"/>  
  </clients>  
   
  <servers>  
   <server host="localhost" port="9200" type="tcp"/>  
  </servers>  
   
  <load>  
   <arrivalphase phase="1" duration="1" unit="minute">  
    <users arrivalrate="5" unit="second"/>  
   </arrivalphase>  
  </load>  
   
  <sessions>  
   <session name="es_load" weight="1" type="ts_http">  
    <request>  
    <http url="/myindex/_search"  
        method="GET"  
        contents_from_file="/home/user/tsung/query.json" />  
    </request>  
   </session>  
  </sessions>  
 </tsung>  

Now we are ready to do the load test, you can start tsung with the configuration descriptor. See below.

 user@localhost:~/tsung$ tsung -f /home/user/tsung/tsung.xml start  
 Starting Tsung  
 "Log directory is: /home/user/.tsung/log/20150704-1104"  
 user@localhost:~/tsung$  

Give a few minute for it to run and you should be able to check the log output. Once it is done, then let's generate the graph.

 user@localhost:~/tsung$ ls  
 total 8.0K  
 -rw-r--r-- 1 user user 60 Jul 4 09:33 query.json  
 -rw-r--r-- 1 user user 724 Jul 4 11:04 tsung.xml  
 user@localhost:~/tsung$ mkdir show_me_da_graph  
 user@localhost:~/tsung$ cd show_me_da_graph/  
 user@localhost:~/tsung/show_me_da_graph$ /usr/lib/tsung/bin/tsung_stats.pl --stats /home/user/.tsung/log/20150704-1104/tsung.log   
 creating subdirectory data   
 creating subdirectory gnuplot_scripts   
 creating subdirectory images   
 warn, last interval (5) not equal to the first, use the first one (10)  
 No data for Bosh  
 No data for Match  
 No data for Event  
 No data for Async  
 No data for Errors  
 user@localhost:~/tsung/show_me_da_graph$ ls  
 total 32K  
 drwxr-xr-x 2 user user 4.0K Jul 4 11:07 data  
 drwxr-xr-x 2 user user 4.0K Jul 4 11:07 gnuplot_scripts  
 drwxr-xr-x 2 user user 4.0K Jul 4 11:07 images  
 -rw-r--r-- 1 user user 3.7K Jul 4 11:07 gnuplot.log  
 -rw-r--r-- 1 user user 7.9K Jul 4 11:07 report.html  
 -rw-r--r-- 1 user user 7.1K Jul 4 11:07 graph.html  
 user@localhost:~/tsung/show_me_da_graph$ chromium graph.html  
 [18334:18334:0704/110724:ERROR:nss_util.cc(819)] After loading Root Certs, loaded==false: NSS error code: -8018  
 Created new window in existing browser session.  

Now look at the beautiful output! If you don't have chromium browser, copy this link and paste into your browser url. file:///home/user/tsung/show_me_da_graph/graph.html . Change the link where appropriately in your workstation. See screenshow below.



If tsung is what you like, consider going into details of tsung. Tsung provide a comprehensive documentation! That's it for this article, I hope you learn something.

Learning java selenium webdriver

Today, we are going to something different, we explore software test technology. As end user, we are mostly dealing with point and click, and with this article, we are going to learn how to test user interface.

There are many testing software out there, just google and you find plenty. In this article, we are going to use Java Selenium webdriver. To quickly start, you will have to complete these bullet points. For complete information of selenium, read here.

• download latest stable selenium java driver


• setup your IDE to reference this jar.

or additional optional download at http://docs.seleniumhq.org/download/



Let's see continue this article with two example.

import java.util.List;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class GoogleSuggest {

    public static void main(String[] args) throws Exception {
        // The Firefox driver supports javascript
        WebDriver driver = new FirefoxDriver();

        // Go to the Google Suggest home page
        driver.get("http://www.google.com/webhp?complete=1&hl=en");

        // Enter the query string "Cheese"
        WebElement query = driver.findElement(By.name("q"));
        query.sendKeys("Cheese");

        // Sleep until the div we want is visible or 5 seconds is over
        long end = System.currentTimeMillis() + 5000;
        while (System.currentTimeMillis() < end) {
            WebElement resultsDiv = driver.findElement(By.className("gssb_e"));

            // If results have been returned, the results are displayed in a drop down.
            if (resultsDiv.isDisplayed()) {
              break;
            }
        }

        // And now list the suggestions
        List<WebElement> allSuggestions = driver.findElements(By.xpath("//td[@class='gssb_a gbqfsf']"));

        for (WebElement suggestion : allSuggestions) {
            System.out.println("suggestion => " + suggestion.getText());
        }

        driver.quit();
    }

}

import org.junit.Before;
import org.junit.Test;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

import com.thoughtworks.selenium.SeleneseTestBase;
import com.thoughtworks.selenium.webdriven.WebDriverBackedSelenium;

public class BaseSeleniumTest extends SeleneseTestBase {

    @Before
    public void setUp() throws Exception {
            WebDriver driver1 = new FirefoxDriver();
            String baseUrl = "http://google.com/";
            selenium = new WebDriverBackedSelenium(driver1, baseUrl);
    }

    @Test
    public void testGoogle() throws Exception {
    	selenium.open("http://google.com/");
    	System.out.println(selenium.getTitle());
    	assertEquals("Google", selenium.getTitle());
    	selenium.close();
    }
}

The first example construct a FireFox WebDriver. Load google url and mimic a typing by sending a keys of Cheese to the query. When Web Element resultsDiv is displayed, then all the suggestion get printed.

The second example is much easier to construct test. By extending SeleneseTestBase, you can use the object selenium and start to call the rich methods it provides for your sub test class. As seem here, similar to the first example, the test started with construction of FirefoxDriver. Then the very familiar junit test, open up google link, assert that the title is Google and then close the selenium object.

That's it for this article, I hope it help you get started. Remember to donate us if you would like to contribute back.