Reading file from Workspace in Jenkins with Groovy script

Question

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

User · Answer

Although this question is only related to finding directory path ($WORKSPACE) however I had a requirement to read the file from workspace and parse it into JSON object to read sonar issues ( ignore minor/notes issues )

Might help someone, this is how I did it- from readFile

jsonParse(readFile('xyz.json'))

and jsonParse method-

@NonCPS
def jsonParse(text) {
        return new groovy.json.JsonSlurperClassic().parseText(text);
}

This will also require script approval in ManageJenkins-> In-process script approval

User · Answer

If you already have the Groovy  Postbuild  plugin installed  I think it s a valid desire to get this done with  generic  Groovy instead of installing a  specialized  plugin   That said  you can get the workspace using manager build workspace getRemote    Don t forget to add File separator between path and file name

User · Answer

I realize this question was about creating a plugin  but since the new Jenkins 2 Pipeline builds use Groovy  I found myself here while trying to figure out how to read a file from a workspace in a Pipeline build  So maybe I can help someone like me out in the future   Turns out it s very easy  there is a readfile step  and I should have rtfm   env WORKSPACE   pwd   def version   readFile    env WORKSPACE  version txt

User · Answer

If you are trying to read a file from the workspace during a pipeline build step  there s a method for that   readFile  name-of-file groovy     For reference  see https   jenkins io doc pipeline steps workflow-basic-steps  readfile-read-file-from-workspace

User · Answer

May this help to someone if they have the same requirement  This will read a file that contains the Jenkins Job name and run them iteratively from one single job  Please change below code accordingly in your Jenkins   x000D   x000D  pipeline      agent any     stages         stage  Hello              steps                script              git branch   Your Branch name   credentialsId   Your crendiatails   url    Your BitBucket Repo URL      To read file from workspace which will contain the Jenkins Job Name                      def filePath   readFile    WORKSPACE   Your File Location                        To read file line by line            def lines   filePath readLines             To iterate and run Jenkins Jobs one by one                           for  line in lines                                                                      build job    line branchName                           parameters                           string name   vertical   value     params vert                             string name   environment   value     params env                             string name   branch   value     params branch                             string name   project   value     params project                                                                                                                                                                                 x000D   x000D   x000D

User · Answer

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

User · Answer

As mentioned in a different post Read  txt file from workspace groovy script in Jenkins I was struggling to make it work for the pom modules for a file in the workspace  in the  Extended Choice Parameter  Here is my solution with the printlns   import groovy util XmlSlurper import java util Map import jenkins   import jenkins model   import hudson   import hudson model        try    get Jenkins instance     def jenkins   Jenkins instance   get job Item     def item   jenkins getItemByFullName  The JOB NAME       println item    get workspacePath for the job Item     def workspacePath   jenkins getWorkspaceFor  item      println workspacePath      def file   new File workspacePath toString      pom xml       def pomFile   new XmlSlurper   parse file      def pomModules   pomFile modules children   join          return pomModules   catch  Exception ex       println ex message

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

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