Quickly testing Jelly templates in email-ext of Jenkins - jenkins

The Email-ext of Jenkins allows you to write a Jelly email template. How do you write and test one without triggering a build every time? Basically, I'm looking for a 1 second iteration where I can modify a Jelly script, hit refresh on a browser, and it will automatically render the template based upon a hard-code project and build result.

Open Jenkins script console at _http://server/script/ (Stackoverflow is having issues saving an edit when this is an actual URL).
Enter the following code and replace your-project-name with the name of your project and me#me.com with your email address:
import hudson.model.StreamBuildListener
import hudson.plugins.emailext.ExtendedEmailPublisher
import java.io.ByteArrayOutputStream
def projectName = "your-project-name"
def project = Jenkins.instance.getItem(projectName)
try
{
def testing = Jenkins.instance.copy(project, "$projectName-Testing")
def build = project.lastUnsuccessfulBuild
// see the javadoc for the Job class for other ways to get builds
def baos = new ByteArrayOutputStream()
def listener = new StreamBuildListener(baos)
testing.publishersList.each() { p ->
println(p)
if(p instanceof ExtendedEmailPublisher) {
// modify the properties as necessary here
p.recipientList = 'me#me.com' // set the recipient list while testing
// run the publisher
p.perform((AbstractBuild<?,?>)build, null, listener)
// print out the build log from ExtendedEmailPublisher
println(new String( baos.toByteArray(), "UTF-8" ))
}
}
}
finally
{
if (testing != null)
{
testing.delete()
}
}
SOURCE: https://earl-of-code.com/2013/02/prototyping-and-testing-groovy-email-templates/
There is also an issue that tracks making this easier:
JENKINS-9594 - Should be able to send test e-mail based on previous build

There is now an option to test templates against builds in the more recent versions of the plugin. When you are on a job's screen, there should be a link on the left side that says Email Template Testing. It will let you select a build to test again and it will render the template right there.

Related

Groovy Missing Property Exception

I have a jenkins build that needs to get the filenames for all files checked in within a changeset.
I have installed groovy on the slave computer and configured Jenkins to use it. I am running the below script that should return the names (or so I assume as this may be wrong as well) and print to the console screen however I am getting this error:
groovy.lang.MissingPropertyException: No such property: paths for class: hudson.plugins.tfs.model.ChangeSet
Here is the Groovy System Script:
import hudson.plugins.tfs.model.ChangeSet
// work with current build
def build = Thread.currentThread()?.executable
// get ChangesSets with all changed items
def changeSet= build.getChangeSet()
def items = changeSet.getItems()
def affectedFiles = items.collect { it.paths }
// get file names
def fileNames = affectedFiles.flatten().findResults
fileNames.each {
println "Item: $it" // `it` is an implicit parameter corresponding to the current element
}
I am very new to Groovy and Jenkins so if its syntax issue or if I'm missing a step please let me know.
I don't know the version of jenkins you are using but according to the sourcecode of ChangeSet that you can find here I suggest you to replace line 9 with:
def affectedFiles = items.collect { it.getAffectedPaths() }
// or with the equivalent more groovy-idiomatic version
def affectedFiles = items.collect { it.affectedPaths }
Feel free to comment the answer if there will be more issues.

how to get the trigger information in Jenkins programmatically

I need to add the next build time scheduled in a build email notification after a build in Jenkins.
The trigger can be "Build periodically" or "Poll SCM", or anything with schedule time.
I know the trigger info is in the config.xml file e.g.
<triggers>
<hudson.triggers.SCMTrigger>
<spec>8 */2 * * 1-5</spec>
<ignorePostCommitHooks>false</ignorePostCommitHooks>
</hudson.triggers.SCMTrigger>
</triggers>
and I also know how to get the trigger type and spec with custom scripting from the config.xml file, and calculate the next build time.
I wonder if Jenkins has the API to expose this information out-of-the-box. I have done the search, but not found anything.
I realise you probably no longer need help with this, but I just had to solve the same problem, so here is a script you can use in the Jenkins console to output all trigger configurations:
#!groovy
Jenkins.instance.getAllItems().each { it ->
if (!(it instanceof jenkins.triggers.SCMTriggerItem)) {
return
}
def itTrigger = (jenkins.triggers.SCMTriggerItem)it
def triggers = itTrigger.getSCMTrigger()
println("Job ${it.name}:")
triggers.each { t->
println("\t${t.getSpec()}")
println("\t${t.isIgnorePostCommitHooks()}")
}
}
This will output all your jobs that use SCM configuration, along with their specification (cron-like expression regarding when to run) and whether post-commit hooks are set to be ignored.
You can modify this script to get the data as JSON like this:
#!groovy
import groovy.json.*
def result = [:]
Jenkins.instance.getAllItems().each { it ->
if (!(it instanceof jenkins.triggers.SCMTriggerItem)) {
return
}
def itTrigger = (jenkins.triggers.SCMTriggerItem)it
def triggers = itTrigger.getSCMTrigger()
triggers.each { t->
def builder = new JsonBuilder()
result[it.name] = builder {
spec "${t.getSpec()}"
ignorePostCommitHooks "${t.isIgnorePostCommitHooks()}"
}
}
}
return new JsonBuilder(result).toPrettyString()
And then you can use the Jenkins Script Console web API to get this from an HTTP client.
For example, in curl, you can do this by saving your script as a text file and then running:
curl --data-urlencode "script=$(<./script.groovy)" <YOUR SERVER>/scriptText
If Jenkins is using basic authentication, you can supply that with the -u <USERNAME>:<PASSWORD> argument.
Ultimately, the request will result in something like this:
{
"Build Project 1": {
"spec": "H/30 * * * *",
"ignorePostCommitHooks": "false"
},
"Test Something": {
"spec": "#hourly",
"ignorePostCommitHooks": "false"
},
"Deploy ABC": {
"spec": "H/20 * * * *",
"ignorePostCommitHooks": "false"
}
}
You should be able to tailor these examples to fit your specific use case. It seems you won't need to access this remotely but just from a job, but I also included the remoting part as it might come in handy for someone else.

Display HTML page content into Jenkins email

I'm trying to display HTML page content into the body of the Jenkins email, i added the following code to the default content section in Editable Email plugin:
${FILE,path="/target/surefire-reports/html/index.html"}
also i tried to add the following code to Pre-send Script in the Email plugin:
def reportPath = build.getWorkspace().child("HealthTestResults.html")
msg.setContent(reportPath.readToString(), "text/html");
both of the two way didn't work and i'm still receiving empty mails.
What about have a try with DSL, if you don't bother have one more Jenkins job
You can:
Add a new build step "Process Job DSLs" (You will need Job DSL Plugin)
Add this Groovy script to "Use the provided DSL script" field
Groovy script
job(jobname_to_your_email_job) {
publishers {
extendedEmail {
recipientList(your_email_list)
defaultSubject(your_subject)
defaultContent(your_default_content)
contentType('text/html')
triggers {
always {
subject(your_subject)
//read your html file and put it in the content field
content(readFileFromWorkspace(path_to_your_html_file))
sendTo {
recipientList()
}
}
}
}
}
}
//This will put your email job to the build queue so your email job will run automatically
queue("Email Report")
And of course, you can customize this part according to the Docs
Tried ${FILE,path="target/surefire-reports/html/index.html"}? ie without the /

Custom changelog in Jenkins Pipelines

I was wondering if it is possible to have a custom changelog appear for Jenkins Pipelines. Ideally, I'd like to propagate the downstream changelogs, but failing that I've tried to create a custom changelog derived from the downstream builds. However, it doesn't appear to work (with no option for viewing the pipeline's workspace either).
I was wondering if this is something that I'm just getting wrong or whether it's actually supported or not.
This is the sample code I'm testing with
node('master')
{
stage('Source')
{
build 'SourceBuild'
def rootDir = currentBuild.rawBuild.getRootDir().toString()
echo rootDir
def changelog = new File(rootDir, "changelog.xml")
PrintWriter writer = new PrintWriter(new FileWriter(changelog));
writer.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
writer.println("<changelog>");
writer.println(String.format("\t\t<user>%s</user>", 'User'));
writer.println(String.format("\t\t<comment>Change</comment>", 'Comment'));
writer.println("\t</changeset>");
writer.println("</changelog>");
writer.close();
}
}
Many thanks
In Jenkins pipeline, I noticed that there is a global variable named currentBuild. It has a readable property called changeSets. I would rather take this approach with pipeline instead of playing around with changelog.xml
stage('some name') {
def gitChangeSetList = currentBuild.changeSets
formatGitChangeLog(gitChangeSetList)
}
def formatGitChangeLog(GitChangeSetList changeSetList) {
def formatStr = ""
for (setItem in changeSetList) {
for (change in setItem.getLogs()) {
formatStr += "${change.getAuthor().getDisplayName()}: ${change.getMsg()}\n"
}
}
return formatStr
}
currentBuild.changeSets is of type GitChangeSetList. From the javadoc, we can derive various methods involved in GitChangeSet.

Can a Job DSL script be tested

Ideally I'd like to be able to invoke the script with some kind of unit test before I have it execute on a Jenkins.
Is there any way to test a Job DSL script other than having jenkins run it?
Besides the examples in job-dsl-gradle-example, you can also go a step further and write tests for individual files or jobs. For example let's assume you have a job configuration file located in jobs/deployJob.groovy
import javaposse.jobdsl.dsl.DslScriptLoader
import javaposse.jobdsl.dsl.MemoryJobManagement
import javaposse.jobdsl.dsl.ScriptRequest
import spock.lang.Specification
class TestDeployJobs extends Specification {
def 'test basic job configuration'() {
given:
URL scriptURL = new File('jobs').toURI().toURL()
ScriptRequest scriptRequest = new ScriptRequest('deployJob.groovy', null, scriptURL)
MemoryJobManagement jobManagement = new MemoryJobManagement()
when:
DslScriptLoader.runDslEngine(scriptRequest, jobManagement)
then:
jobManagement.savedConfigs.each { String name, String xml ->
with(new XmlParser().parse(new StringReader(xml))) {
// Make sure jobs only run manually
triggers.'hudson.triggers.TimerTrigger'.spec.text().isEmpty()
// only deploy every environment once at a time
concurrentBuild.text().equals('false')
// do a workspace cleanup
buildWrappers.'hudson.plugins.ws__cleanup.PreBuildCleanup'
// make sure masked passwords are active
!buildWrappers.'com.michelin.cio.hudson.plugins.maskpasswords.MaskPasswordsBuildWrapper'.isEmpty()
}
}
}
}
This way you are able to go through every XML node you want to make sure to have all the right values set.
Have a look at the job-dsl-gradle-example. The repo contains a test for DSL scripts.
Doing it in the same way as crasp but using Jenkins test harness as explained in Jenkins Unit Test page, which is slower but would work with auto-generated DSL giving syntax errors as explained here.
After setting the code as explained here, you can just do a test like this one:
#Unroll
void 'check descriptions #file.name'(File file) {
given:
JobManagement jobManagement = new JenkinsJobManagement(System.out, [:], new File('.'))
Jenkins jenkins = jenkinsRule.jenkins
when:
GeneratedItems items = new DslScriptLoader(jobManagement).runScript(file.text)
then:
if (!items.jobs.isEmpty()) {
items.jobs.each { GeneratedJob generatedJob ->
String text = getItemXml(generatedJob, jenkins)
with(new XmlParser().parse(new StringReader(text))) {
// Has some description
!description.text().isEmpty()
}
}
}
where:
file << TestUtil.getJobFiles()
}

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