[FIXED] Groovy Jenkins: Evaluate BUILD_LOG_REGEX and check if empty before sending email

Issue

I have a finally clause in my JenkinsFile which is like

finally{
 def script_regex = '${BUILD_LOG_REGEX, regex="^The module", maxMatches=5, showTruncatedLines=false, escapeHtml=true}'
 if (script_regex){
        emailext to: "[email protected]",
                 subject: "some subj",
                 body: script_regex
    }
}

I tried using echo(script_regex) but it gives

'${BUILD_LOG_REGEX, regex="^The module", maxMatches=5, showTruncatedLines=false, escapeHtml=true}' 

as a string instead of evaluating the regex. Although, it works fine inside exailext. Is there a way to check if this regex returns an empty string? and only send email when the regex returns a matching string. Thanks in advance!

Solution

So after a bit of research, I found that the BUILD_LOG_REGEX variable is defined by the emailext plugin. Hence, we cannot use outside it.

Instead we can use something like manager.logContains('<regex>') and this will check your build log and return a boolean value indicating whether the required string is present or not.

Answered By - Yashvardhan Nanavati