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Foglight for Java EE Technologies 5.9.13 - Administration and Configuration Guide

Using the text editor

If you are familiar with the recording settings from previous version of Foglight for Java EE Technologies, and you are comfortable editing the settings in a plain text format, you can edit the Nexus recording settings manually.

1
On the navigation panel, under Dashboards, click Application Servers > Administration.
On the Agents tab, click the name of the Nexus that is using the configuration you want to edit. Click Text edit recording settings to edit the settings in a plain text file.
On the Recording Settings tab, click the name of the configuration you want to edit. Click Text edit to edit the settings in a plain text file.

The recording.config file opens in a text editor.

For information about the settings contained in this file, see the following topics:

Request sampling

Use the Request Sampling tab Nexus Recording editor for the Nexus to configure request separation rules, URL transformation rules, and filtering rules. Request separation is the first process that occurs when the agent collects request metrics. Next, any rule transformations are applied. Filtering occurs after request separation and URL transformation rules are applied. As a result, the filters can refer to parameter names and values from request separation, and must reference the transformed URL.

For more information, see:

Setting rules for separating requests

Request separation is the first process that takes place when collecting request metrics. On the Request Sampling tab, you can specify how to separate a request into multiple request types based on the request's parameters and cookies. Separation occurs if any of the parameters in a request match the request separation rules (SeparationRules) for that URL, meaning that a request may be separated based on more than one parameter. SeparationRules are configured in the recording.config property file.

The default setting is:

SeparationRules = {
};

Keys and values can be used to customize the SeparationRule parameter.

2
Click Edit beside SeparationRules.
3
In the Settings Editor, click Add to add each rule (one per row).
4
Click OK to close the Settings Editor.
1
Open the recording.config file. For details, see Using the text editor .
2
Edit the SeparationRules entry:
3
Save your changes.

Setting rules for transforming URLs

The Nexus recording settings define transformation of URLs. If separation parameters are defined for a URL that is to be transformed, the transformation is performed on the resulting separated URL, which includes the path and separation parameters. There may be more than one transformation defined. Each transformation may contain more than one replacement definition.

The URL transformation rules also control how requests are grouped for display on the Requests view of the Application Servers Monitor dashboard. A set of default transformations shorten the request URLs. Request types that have request separation configured are not transformed by the default rule. Static file requests (for example, images) are also not transformed.

3
Click Edit beside URLTransformationRules.
4
In the Settings Editor, click Add URL transformation.
5
In the Add Matching URL Regex box, type the regular expression that you want to use to match the URLs that need to be transformed.
6
Click OK to save the matching URL.
8
Click Add URL replacement. In the new row that appears, click in each box to type the required information.
9
In the Text in URL Regex box, type the regular expression used to match the text that needs to be replaced in the URL.
10
In the Replacement Text box, type the literal string of the replacement text; this can be an empty string, or it can contain markers used to substitute sub-expressions from the Text in URL Regex, which are sequences of characters surrounded by parentheses. Valid markers for substitution are:
1
Open the recording.config file. For details, see Using the text editor .
2
Edit the URLTransformationRules entry:

where:

<url-regex> is a regular expression used to match the URLs that need to be transformed. The ‘/’ and ‘?’ characters must be escaped with a ‘\’ character.

<text-in-url-regex> is a regular expression used to match the text that needs to be replaced in the URL. The ‘/’ and ‘?’ characters must be escaped with a ‘\’ character.

<replacement-literal> is a string literal of the replacement text, as described in Step 10 in the previous procedure. Backslashes must be doubled (“\\”) .

3
Save your changes.
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