Pipeline post instruction

One . Introduce

post The steps are included throughout pipeline Or some additional steps after the phase is completed .post The steps are optional , So it is not included in the declarative pipeline In the simplest structure , But that doesn't mean it doesn't work very well .

Usually used for exception handling , If the last stage fails , Then do some operations . For example, cleaning up dependent packages in the previous stage , After judging that the cleanup failed , Send email to alarm and exit .

Two . Parameter description

Parameter position ： pipeline or steps part , According to the completion status , use sb.'s judgement .

Specific parameters ：

• always： No matter what the current completion status is , All implemented
• changed： Execute as long as the current completion state is different from the last one
• fixed： The last completion state was failed or unstable （unstable）, Execute when the current completion status is success
• regression： The last completion status is success , The current completion status is failed 、 Unstable or suspended （aborted） When the
• aborted： When the current execution result is aborted （ Generally, it is artificially suspended ） perform
• failure： Execute when the current completion status is failed
• success： Execute when the current completion status is success
• unstable： Execute when the current completion state is unstable
• cleanup： Clean up the condition block . No matter what the current completion status is , After all other condition blocks are executed .post A section can contain multiple conditional blocks at the same time . Here are post A complete example of the section

Be careful ：

1. post Step in phase , by steps Later description
2. post Every step of judgment , Will match , Instead of the first match , Others skip

3、 ... and . Using examples

Write a simple example ：

1. pipeline {
2.     agent any
3.     stages {
4.         stage('test'){
5.             steps {
6.                 echo 'test'
7. }
8.             post {
9.                 always {
10.                     echo "post condition executed: always ..."
11. }
12.                 changed {
13.                     echo "post condition executed: changed ..."
14. }
15.                 aborted {
16.                     echo "post condition executed: aborted ..."
17. }
18. }
19. }
20. }
21. }

When writing the article , Added regression Judgment of options , However, the following error is reported by the execution , Show the current pipeline The plug-in does not support this option , So in the above example, we have removed .

Re execution , You can see the display 2 Outputs ,always Each time, it will display , Because I failed last time , This time steps Of echo Successful implementation , It shows changed.