Bug: Buildmaster 6.2.13 (Build 2). Parsing templated configuration files.

antony.booth_1029

Attempting to deploy a Template based configuration file for NLog, Buildmaster fails with exception: -
Unhandled exception: System.FormatException: "$" is an invalid variable name.

This is because NLog is an XML document that contains 'renderers', such as ${shortdate} that use a dollar and braces to denote a replaceable tag. See example below.

According to Buildmaster documentation, to escape a dollar, it is supposed to be preceded with another dollar. The parser can handle something like $$Alpha, but not $${Alpha} as the variable name becomes '$'

I have a hacky workaround of instead of escaping dollars with another dollar, instead create a variable called $Dollar containing '$' and replacing something like ${shortdate} with $Dollar{shortdate} instead of $${shortdate}

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd" autoReload="true" throwExceptions="false" internalLogLevel="Off" internalLogFile="C:\logs\relay\nlog-internal.log">

  <extensions>
    <add assembly="NLog.Web.AspNetCore"/>
  </extensions>

  <variable name="logRoot" value="C:\logs\relay" />
  <variable name="fileNamePrefix" value="$${var:logRoot}/$${shortdate}" />  

</nlog>

atripp

Hello; thank you pointing this out, this is a documentation bug, and that page wasn't updated. But I just fixed it now.

Configuration files now use the OtterScript/ExecutionEngine to handle replacements, so please use the grave apostrophe (`) to escape, so in the case, it's \$myvar `

  <variable name="fileNamePrefix" value="`${var:logRoot}/`${shortdate}" />

Cheers!

antony.booth_1029

@atripp Thanks. That resolved the issue. On a related, minor note; deploying a config file no longer shows a preview.

rhessinger

Hi @antony-booth_1029 ,

Looks like we had an issue in how the javascript resource is loading for this modal. I have fixed this and it will be released in the next version of BuildMaster 6.2.14 which is due out at the end of this week.

Thanks,
Rich