Coldfusion Log JSON Format

Even if ColdFusion had the facility to do that, why would you bother at all? Just let ColdFusion do its thing. You do yours. 🙂

Converting a ColdFusion log file to JSON format is straightforward. Take the gateway log file, for example:

<cfset logFileAsIs=fileread("C:\ColdFusion2021\cfusion\logs\eventgateway.log")>

<cfset logFileAsArray=[]>

<!--- Using line-break as delimiter, convert each line of log
into an element in an array --->
<cfloop list="#logFileAsIs#" delimiters="#chr(10)&chr(13)#" index="line">
	<cfset arrayAppend(logFileAsArray, "{#line#}")>
</cfloop>

<cfset logFileAsJSON=serializeJSON(logFileAsArray)>

<!---<cfdump var="#logFileAsArray#" label="logFileAsArray">--->
<!---<cfdump var="#logFileAsJSON#" label="logFileAsJSON">--->

To be clear, there's no cf feature to enable that. You should be able to find generic 3rd party tools offering to convert a text log file to json.

You may even be able to find some tomcat-specific feature or add-on providing for this.

Either way (and to your last point), do note that there are 2 kinds of cf logs: those that are single-line (most of them), having a date/time at the start of each line. Then there are a few that are multi-line (having lines without a datetime), including the coldfusion-out.log, coldfusion-error.log, and exception.log, though SOMETIMES they are single-line, depending on the circumstance.

If the latter may be what you refer to, I suspect you'll have a heck of a time converting those to single-line, though I suppose with some tools it may be possible.

Let us know if you find anything, or perhaps someone else will have an idea for you.