A trigger script for the jenkins (hudson) email_ext plugin which informs users in case their commits introduce new violations or warnings. In contrast to the limit options of various other plugins for code analysis reporting this does not fail the build.A simple but insecure way to share this script between different jobs is to execute the follo…

violations_trigger.groovy

import jenkins.model.Jenkins
build = Jenkins.instance.items[0].builds[0]
println build

println("Available actions on the build: " + build.actions)
  
def analysisCoreActions = []

// All static analysis actions based on static analysis core can be handled uniformly
analysisCoreActions.addAll(build.actions.findAll{it.class.name =~ "hudson.plugins.checkstyle.CheckStyle.*ResultAction"})
analysisCoreActions.addAll(build.actions.findAll{it.class.name =~ "hudson.plugins.findbugs.FindBugs.*ResultAction"})
analysisCoreActions.addAll(build.actions.findAll{it.class.name =~ "hudson.plugins.pmd.Pmd.*ResultAction"})
analysisCoreActions.addAll(build.actions.findAll{it.class.name =~ "hudson.plugins.dry.Dry.*ResultAction"})
analysisCoreActions.addAll(build.actions.findAll{it.class.name =~ "hudson.plugins.warnings.*ResultAction"})
analysisCoreActions.removeAll([null])

println "Found analysis core actions: " + analysisCoreActions

def newViolations = analysisCoreActions.sum{it.result.numberOfNewWarnings}

println "Found " + newViolations + " new violations in analysis core plugins"

// Specifically handle new tasks as we probably want to send something different in this case

def tasksAction = build.actions.find{it.class.name =~ "hudson.plugins.tasks.*ResultAction"}
def newTasks = 0
if (tasksAction != null) {
    newTasks = tasksAction.result.numberOfNewWarnings
    println "Found " + newTasks + " new tasks"
}

// now there are some special rules for plugins that do not use analysis core

// violations plugin
def violationsStatus(build) {
    def violationsAction = build.actions.find{it.class.name =~ "hudson.plugins.violations.ViolationsBuildAction"}
    if (violationsAction == null) {
        return false
    }
    def previousBuild = build.previousBuild
    if (previousBuild == null) {
        return false
    }
    def previousViolationsAction = previousBuild.actions.find{it.class.name =~ "hudson.plugins.violations.ViolationsBuildAction"}
    if (previousViolationsAction == null) {
        return false
    }
    for (currentViolationState in violationsAction.report.violations) {
        println currentViolationState.key + ": " + currentViolationState.value
        def previousState = previousViolationsAction.report.violations[currentViolationState.key]
        if (previousState == null) {
            continue
        }
        println "Previous: " + previousState
        if (currentViolationState.value > previousState && previousState >= 0) {
            return true
        }
    }
    return false
}
def violationsAdded = violationsStatus(build)
println "Added violations: " + violationsAdded

// cppcheck
def cppcheckStatus(build) {

    def cppcheckAction = build.actions.find{it.class.name =~ "org.jenkinsci.plugins.cppcheck.CppcheckBuildAction"}
    if (cppcheckAction == null) {
        return false
    }
    def previousBuild = build.previousBuild
    println "Previous cppcheck build: " + previousBuild
    if (previousBuild == null) {
        return false
    }
    def previousCppcheckAction = previousBuild.actions.find{it.class.name =~ "org.jenkinsci.plugins.cppcheck.CppcheckBuildAction"}
    println "Previous cppcheck action: " + previousCppcheckAction
    if (previousCppcheckAction == null) {
        return false
    }

    return cppcheckAction.result.report.allErrors.size() > previousCppcheckAction.result.report.allErrors.size()
}

def cppcheckAdded = cppcheckStatus(build)
println "Added cppcheck errors: " + cppcheckAdded

// send email if we have new warnings

newViolations > 0 || newTasks > 0 || violationsAdded || cppcheckAdded

Thank you for you code, but the documentation could be improved.
I copied your script to the "Pre-send Script" element of the Email-ext plugin, but no e-mail is send if a new findbugs warning is added.
Any idea what I'm doing wrong?
I also don't find your script output (println) in the build log.

@res1st, sorry, never saw your post. I have updated the description accordingly. There is a dedicated trigger to add under the advanced section. You need to use that.

Do you know if there is any way to source a groovy script in that section of Jenkins (by giving it the file path) instead of copy and pasting the script in there?

Hi, I cant get the script to run in Jenkins correctly.
created the Editable Email Notification --> Advance Setting paste the above code into Pre-Send Script and save. ran Jenkins with warning and not calling the script is there something i doing wrong

Helpful code!
Using it in Post-build actions .. Editable Email Notification .. Advanced Settings .. Add Trigger .. Script .. Advanced .. Trigger Script.

One minor improvement to it is use

build = this.binding.build

instead of

build = Jenkins.instance.items[0].builds[0]

Works even if we create new jobs copying current settings.