I have a groovy script (a Jenkins pipeline) and a simple variable comparison is not working like I expect. I have a class defined to hold some constants, like this:
class email_when {
static final int ON_FAILURE = 0
static final int ALWAYS = 1
}
At a certain point in the script I set an environment variable to one of these states, like this:
env.EMAIL_WHEN = email_when.ALWAYS
Then later, I check the value. This check is always failing and I don't understand why.
echo ("email when = "+env.EMAIL_WHEN+ " always = "+email_when.ALWAYS);
if (env.EMAIL_WHEN == email_when.ALWAYS)
{
echo ("Send email.")
}
else
{
echo ("NO EMAIL")
}
So this always prints
email when = 1 always = 1
NO EMAIL
I don't understand why?
I thought maybe it was some sort of object/value comparison thing? Although I am directly setting env.EMAIL_WHEN to email_when.ALWAYS.
I tried this and it still did the same thing:
if (env.EMAIL_WHEN.equals(email_when.ALWAYS))
Can anyone explain what I am missing?
Thanks!
Everything in env map automatically converted to String
so 1 != '1'
Related
I am injecting Active Choices parameter value(s) in the Jenkins scripted pipeline.
PFB sample values passed to active choice parameter block:
return['ABC','DEF','GHI',JKL']
PFB my sample script:
node(){
selectModName()
}
def selectModName(){
stage 'Multi selection'
String[] mods = "${modName}".split(',')
modsz = mods.size()
echo ''+modsz+''
for(mod in mods){
if (modsz == null || modsz == 0){
echo 'There is nothing to be printed'
} else {
echo ''+mod+' is name of the module \n'
}
}
}
The else block is executed when I pass greater than or equal to 1 value(s) (working as intended). But if block is not executing its logic when I don't pass any parameter and press build now.
Funny thing is- size() is returning 1 instead of 0 (echo ''+modsz+'') when values aren't passed.
How to make if block execute its logic when no values are passed?
Your code always jumps to the "else" block, because
"".split(',')
produces an array with a single empty string.
assert "".split(',').size() == 1
assert "".splti(',') == [""] as String[]
When you use active choice parameter with multiple values selection and you don't select anything, your variable name stores an empty string. You should check first if the modName parameter is not an empty string and only otherwise split and display values.
node(){
selectModName()
}
def selectModName(){
stage 'Multi selection'
if (modName) {
String[] mods = modName?.split(',')
for (mod in mods) {
echo " ${mod} is name of the module"
}
} else {
echo 'There is nothing to be printed'
}
}
I have a Jenkinsfile where I would like to compare two variables in expression. Say my target should have v1 and v2 the identical value, the step should be skipped, but both variables don't have the identical value, jenkins should cancel the job.
My stage for it looks like this at the moment. Unfortunately, jenkins overrides this step even if both variable ones have different values.
stage('Compare') {
when {
expression { myVar = myVar2}
}
steps {
exit
}
}
You made a mistake in your when condition. The expression myVar = myVar2 is an assignment expression (you assign value of myVar2 to variable myVar). If you want to test if two variables are equal, you need to use == operator.
stage('Compare') {
when {
expression { myVar == myVar2 }
}
steps {
exit
}
}
I have a variable in groovy like below:
project.Map
{
time.'1 1 * ?' = ['T1']
time.'2 1 * ?' = ['T2']
templates.'T1' = ['Z','X','Y']
templates.'T2' = ['Q']
}
Sorry but I am new to groovy ,when i try to access the individual
variable values in project.map how do i access them
i tried something like below
log.info(grailsApplication.config.project.Map.time[1])
log.info(grailsApplication.config.project.Map.get('time.'2 1 * ?'' ))
log.info(grailsApplication.config.project.Map.get('time[0]' ))
log.info(grailsApplication.config.project.Map.time.get('1 1 * ?'))
but they all print null value or object references.how do i access values for
time and templates both within a for loop and without it.
please see http://grails.org/doc/latest/guide/conf.html#config for the ways the config is allowed to nest. your outer syntax is especially mentioned to not be allowed:
However, you can't nest after using the dot notation. In other words, this won't work:
// Won't work!
foo.bar {
hello = "world"
good = "bye"
}
You have to write it as
project { Map { ... } }
The inner dotted parts (with the assignment) are ok (according to the doc)
I've been programming in Java for a while and I decided to try and learn Groovy. I'm going through the project euler problems and one the first problem I've already noticed something strange.
class Problem1
{
public static void main(String[] args)
{
def multiple = 1;
for(i in 1..1001)
{
//if it is divisible by three then multiply is
if(i%3 ==0)
{
multiple = multiple * i;
}
if(i%5 ==0)
{
multiple = multiple * i;
}
holder = multiple
}
println(multiple)
}
}
my value to multiple is being set incorrectly. Everything works as expected inside of the loop but when I try to print my value I get 0. It doesn't even print the 1 that I set the variable to initially. I wouldn't expect this to happen in Java. Why does it happen in Groovy? I thought that groovy was supposed to be like Java under the hood.
You're overflowing an integer (as you would in Java also)
Try using a BigInteger by changing
def multiple = 1;
To
def multiple = 1G
I use this function for debugging:
function d($v,$tofile=null) {
static $wasused;
ob_start();
var_dump($v);
$dump = ob_get_clean();
if (is_array($v)) $dump = preg_replace("#=>\n#",'=>',$dump);
if (strlen($dump)>1000 or $tofile) {
fileput('debug.txt',$dump,$wasused);
echo n.n."strlen=".strlen($dump)." >> debug.txt".n.n;
}
elseif (strlen($dump)<80) echo $dump;
else echo n.n.$dump.n.n;
$wasused=true;
}
the problem is it sometimes return content to console, particularly when this content is var_dump result on a big array,
anyone of you have seen this problem before ?
If this is in your php.ini:
implicit_flush = On
change it to this:
implicit_flush = Off
Before assuming that there is a problem with var_dump itself, one would need to verify that fileput() does exactly what the question implies.