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creating-templates.xml
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creating-templates.xml
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<?xml version="1.0"?>
<!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor
license agreements. See the NOTICE file distributed with this work for additional
information regarding copyright ownership. The ASF licenses this file to
You under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of
the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License. -->
<!DOCTYPE document[
<!ENTITY hellip "…" >
]>
<document id="$Id$">
<properties>
<title>User guide: Customizables templates</title>
</properties>
<body>
<section name="Customizable template">
<p>
This document describes how to create a customizable template.
</p>
<subsection name="1 Folder structure" anchor="folder_structure">
<p>
The template feature uses the bin/templates folder which contains :<br/>
<ul>
<li>templates.xml, the file where you declare the templates you want to be able to use</li>
<li>some .jmx and .jmx.fmkr files which are the templates</li>
</ul>
</p>
<p>Here is how it looks like:
<figure image="templates/template_folder.png">Figure 1 - template folder</figure>
</p>
</subsection>
<subsection name="2 Template declaration" anchor="template_creation">
<subsection name="2.1 Basic template declaration" anchor="basic_template_declaration">
<p>
First of all you must declare your template. To do that, look into the templates.xml file.<br/>
This file respect a DTD <br/>
Below is the already existing Recording template declaration inside the templates.xml :
<figure image="templates/templates_xml.png">Figure 2 - recording template declaration</figure>
A template declaration is made as follow :<br/>
<ul>
<li><code>template</code> element which contains the information described in the following tags</li>
<li><code>name</code> element which contains the template name the user will see</li>
<li><code>fileName</code> element which contains the relative path of the template.</li>
<li><code>description</code> element which uses html to describe the template</li>
<li><code>optional</code> parameters tag (will be discussed later)</li>
</ul>
</p>
</subsection>
<subsection name="2.2 Customizable template declaration" anchor="customizable_template_declaration">
<p>
Let's say we want the exact same Recording template as in the 2.1 section, but we want to choose the name
of the xml file where the recording of view result tree will be saved.<br/><br/>
To do so we will use the parameters tag to tell JMeter to ask the user about a name for the concerned file :
<figure image="templates/templates_xml_parameters.png">Figure 3 - recording template with parameters</figure>
<note>You can put as many parameter tags as you want in the parameters tag.</note>
Let's see what changed here.<br/>
Firstly, customs templates are <code>.jmx.fmkr</code> files and not only <code>.jmx</code>.<br/><br/>
Lastly, we added a <code>parameters</code> tag.<br/> As you can see in the image, a <code>parameters</code> tag contains <code>parameter</code> tags.<br/>
Parameter tags are empty and contains 2 attributes :
<ul>
<li><code>key</code> is the name of the parameter you will ask the user to fill.</li>
<li><code>defaultValue</code> is as its name says, the default value the user will see for the parameter.</li>
</ul>
</p>
</subsection>
</subsection>
<subsection name="3 Template file" anchor="template_file">
<subsection name="3.1 Basic template file" anchor="basic_template_file">
<p>
The template file is the one you used in the fileName tag when you declared your template.
A template file is just the saving of a JMeter test plan.
</p>
</subsection>
<subsection name="3.2 Customizable template file" anchor="customizable_template_file">
<p>
In the 2.2 section we saw that a custom template file is a .jmx.fmkr file.<br/>
The single difference between them is the .jmx.fmkr will be analyzed by JMeter to<br/>
detect customs tag. If a custom tag is found, JMeter will try to replace it by the corresponding
given value from the user.<br/><br/>
A custom tag is defined as follow :
<source><![CDATA[[=<key>]]]></source>
This is based on <a href="https://freemarker.apache.org/docs/dgui_misc_alternativesyntax.html#dgui_misc_alternativesyntax_interpolation">Freemarker alternative Interpolation syntax</a>.
Let's illustrate how it works with an example.<br/>
Consider the following part of the recording.jmx template file : <br/>
<figure image="templates/template_recording_filename.png">Figure 4 - recording.jmx save file</figure>
The surrounded area correspond to the name of the xml file where the View Results Tree output will be saved.
As it is, when you use the template you will always have the same saving filename : <code>recording.xml</code>.<br/><br/>
To make it customizable, change your recording template declaration in the templates.xml files by the<br/>
one shown in the 2.2 section. Then, rename the recording.jmx file to recording.jmx.fmkr.<br/><br/>
When it's done, Change the above selected line by this one :
<source><![CDATA[<stringProp name="filename">[=xmlFileName]</stringProp>]]></source>
<br/>
It's over ! With this configuration, if you chose to use the recording template, JMeter will ask you
a xmlFileName (correspond to the key value in the declaration).
<figure image="templates/template_parameters_window.png">Figure 5 - JMeter asks you the value you want to put for the key</figure>
Then, you will find the expected value in the created template where you placed the [=xmlFileName] tag :
<figure image="templates/template_recording_retrieved_value.png">Figure 6 - the value changed</figure>
</p>
</subsection>
</subsection>
</section>
</body>
</document>