如果其他语句在Jenkins管道脚本中无法正常工作(groovy) [英] If else statement not working properly in Jenkins pipeline script (groovy)
问题描述
我有管道脚本(groovy)，我试图在其中使用if和else条件，但其行为异常.似乎总是返回false.
I have the pipeline script (groovy) where i m trying to use if and else condition but its not behaving normally. Seems it always returns false.
这是我的管道脚本示例(片段):
Here is my sample (snip of) pipeline script:
def branch_exists_in_node = 1
def branch_exists_in_common = 0
def branch_exists_in_extra = 0
if(branch_exists_in_node == 1) {
NODE_BRANCH = env.BRANCH_NAME
}else {
NODE_BRANCH = "master";
}
if(branch_exists_in_common == 1) {
COMMON_BRANCH = env.BRANCH_NAME
}else {
COMMON_BRANCH = "master"
}
但是在这里，即使值是1，它总是求值为false.
But here it always evaluating to false even if the value is 1. Is there any issue with the syntax?
当我对上述变量进行回显时，它可以很好地打印.
when i do echo of above variables, it prints well..
echo "${branch_exists_in_angular}" //0
echo "${branch_exists_in_node}" //1
echo "${branch_exists_in_common}" //0
更新: 这是我最小的詹金斯管道脚本，请帮忙
UPDATE: Here is my minimal jenkins pipeline script, please help
def EXTRA_BRANCH
def ANGULAR_BRANCH
def NODE_BRANCH
def COMMON_BRANCH
def branch_exists_in_angular
def branch_exists_in_node
def branch_exists_in_common
def branch_exists_in_extra
pipeline {
agent {
label 'nimbus-cloud'
}
options {
gitLabConnection('gitlab')
timeout(time:1, unit: 'HOURS')
}
environment {
WORK_DIR = "${WORKSPACE}/${BUILD_NUMBER}"
EXTRA_REPO = "git@gitlab.example.com:tools/extra.git"
COMMON_REPO = "git@gitlab.example.com:tools/common.git"
ANGULAR_REPO = "git@gitlab.example.com:tools/angular.git"
NODE_REPO = "git@gitlab.example.com:tools/node.git"
EXTRA_BRANCH = "${env.BRANCH_NAME}"
}
stages {
stage('PREDEPLOYMENT: Cleanup and Setting up the VM. '){
steps {
running("${JOB_NAME}")
echo "Deleting previous images. "
sh 'docker rmi -f $(docker images -a -q) | echo "Not able to delete some images"'
dir("$WORKSPACE"){
sh 'rm -rf *'
}
// setting up
echo "BRANCH NAME IS ${env.BRANCH_NAME}"
script {
EXTRA_BRANCH = env.BRANCH_NAME // this will be different across all the repos
// Check if above branch is already there on every repo -- for angular
try {
sshagent(['my-git-ssh']){
branch_exists_in_angular = sh(script: 'git ls-remote --heads $ANGULAR_REPO $EXTRA_BRANCH | wc -l', returnStdout: true)
echo "${branch_exists_in_angular}"
branch_exists_in_node = sh(script: 'git ls-remote --heads $NODE_REPO $EXTRA_BRANCH | wc -l', returnStdout: true)
echo "${branch_exists_in_node}"
branch_exists_in_common = sh(script: 'git ls-remote --heads $COMMON_REPO $EXTRA_BRANCH | wc -l', returnStdout: true)
echo "${branch_exists_in_common}"
}
} catch(Exception e){
echo "WARN: something unexpected occured. "
echo "${e}"
}
// below lines prints as expected
echo "${branch_exists_in_angular}" // 0
echo "${branch_exists_in_node}" // 1
echo "${branch_exists_in_common}" //0
if(branch_exists_in_angular) {
ANGULAR_BRANCH = env.BRANCH_NAME
}else {
ANGULAR_BRANCH = "master";
}
if(branch_exists_in_node) {
NODE_BRANCH = env.BRANCH_NAME
}else {
NODE_BRANCH = "master";
}
if(branch_exists_in_common) {
COMMON_BRANCH = env.BRANCH_NAME
}else {
COMMON_BRANCH = "master"
}
}
echo ANGULAR_BRANCH // prints master = expected
echo NODE_BRANCH // prints master but expected is checkout branch name feature-test
echo COMMON_BRANCH // prints master expected
}
post {
success {
echo "Success: VM Cleaned up for testing. "
}
failure {
echo "Error: Some error occured while cleaning up the system. "
failure("${JOB_NAME}")
}
}
}
}
}
推荐答案
请记住，sh(returnStdout: true, script: ...)返回String，因此像branch_exists_in_angular这样的变量是字符串而不是数字.在Groovy(包括Jenkins Groovy CPS环境)中，以下表达式始终求值为true:
Keep in mind that sh(returnStdout: true, script: ...) returns String so variables like branch_exists_in_angular are strings and not numbers. In Groovy (including Jenkins Groovy CPS environment) following expressions always evaluate to true:
if ('0') {
echo "0 is 0"
}
if ('1') {
echo "1 is 1"
}
使用(expr) as Integer将sh步骤的结果转换为整数:
Cast the result of sh step to an integer using (expr) as Integer:
branch_exists_in_angular = sh(script: 'git ls-remote --heads $ANGULAR_REPO $EXTRA_BRANCH | wc -l', returnStdout: true) as Integer
这将使您的变量成为Integer类型，然后if (0)评估为false，而if (1)评估为true.
It will make your variables to be a type of Integer and then if (0) will evaluate to false and if (1) will evaluate to true.
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