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From Paul Loy <ketera...@gmail.com>
Subject BeanShell PostProcessor and vars issue
Date Wed, 06 Oct 2010 11:09:52 GMT
Hi All,

I have the following in JMeter

|
|-- HTTP Request Sampler (search)
|   |
|   --- RegEx PostProcessors (x15)
|
|-- ForEach
|   |
|   --- HTTP Request Sampler (page)
|       |
|       |-- RegEx PostProcessor (extracts $_something)
|       |
|       --- BeanShell PostProcessor
|
|-- HTTP Request Sampler (using $_somelist)

The first HTTP request performs a search that gets a list of 10 items. I
then (for the sake of doing it simply) have 15 RegEx PostProcessors to
extract each link from the results. For each of those links I then extract
some other information via another HTTP Request. The idea is then to create
a list of some of these items that I use in the final HTTP Request. My
BeanShell PostProcessor should do this. Here is the code I have in there:

String thing = (String) vars.get("_something");
Object list_obj = vars.get("_somelist");
String list = null;

if (list_obj == null) {
    log.info("new list");
    list = thing;
}
else {
    log.info("concat list");
    java.util.Random random = new
java.util.Random(System.currentTimeMillis());

    int rand = random.nextInt(100);

    if (rand < 40) {
      list = (String) list_obj;
      list += "%2C" + thing;
    }
}

vars.put("_somelist", list);

When I run this, I get the following Logging:

2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement: *new list*
2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement: *concat list*

2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement: *new list*
2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement:* concat list*

2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement: *new list*
2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement: *concat list*

2010/10/06 11:46:58 INFO  - jmeter.util.BeanShellTestElement: *new list*
2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *concat list*

2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *new list*
2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *concat list*
2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *concat list*
2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *concat list*

2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *new list*
2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *concat list*

2010/10/06 11:46:59 INFO  - jmeter.util.BeanShellTestElement: *new list*

It does indeed loop through 15 times, but seemingly arbitrarily it thinks
that var _somelist is null and so starts a new list.

Any thoughts?

Thanks in advance,

Paul.

-- 
---------------------------------------------
Paul Loy
paul@keteracel.com
http://uk.linkedin.com/in/paulloy

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