[SOLVED] Reading file from Workspace in Jenkins with Groovy script

Reading file from Workspace in Jenkins with Groovy script

I want to add a Build step with the Groovy plugin to read a file and trigger a build fail depending on the content of the file.

How can I inject the workspace file path in the groovy plugin ?

myFileDirectory = // Get workspace filepath here ???
myFileName = "output.log"
myFile = new File(myFileDirectory + myFileName)

lastLine = myFile.readLines().get(myFile.readLines().size().toInteger() - 1)
if (lastLine ==~ /.Fatal Error.*/ ){
    println "Fatal error found"
    System.exit(1)
} else{
   println "nothing to see here"
}

Solution

Based on your comments, you would be better off with Text-finder plugin.

It allows to search file(s), as well as console, for a regular expression and then set the build either unstable or failed if found.

As for the Groovy, you can use the following to access ${WORKSPACE} environment variable:
def workspace = manager.build.getEnvVars()["WORKSPACE"]

Note that in "Execute system Groovy script" step you can use build.getEnvVars() directly (also in sandboxed script). For example:

def workspace = build.getEnvVars()["WORKSPACE"]
def myFilePath = "my-logs/script-output.log"
def myFile = new File("${workspace}/${myFilePath}")
def newContent = "<h2>Script log</h2> <pre>${myFile.text}</pre>"
def existingDescription = build.getDescription() ?: ""
build.setDescription(existingDescription + newContent)

The build variable should be available without any imports in a system Groovy script.