Declarative pipeline "when" tag is pushed

[Lynn Lin]

HI ,All,

 i followed with page https://wiki.jenkins.io/display/JENKINS/GitHub+Branch+Source+Plugin to enable tag will trigger a new build then the questions comes 

How can I use "when" in declarative pipeline to do something like deployment when a new tag is pushed to remote repository

stage('Example Deploy') {
            when {
                branch 'production' // here how we can use tag as condition 
            }
            steps {
                echo 'Deploying'
            }
        }

"

• When used with the Branch API Plugin, tags will show up as a new category. The default configuration of Branch API will not trigger builds for tags automatically. 
  
  This is by design, as one of the use-cases for tag discovery is to use the tag job to perform deployment. If tags were built automatically, given that the order in which the tag jobs actually execute is undefined, the automatic build could cause significant issues. Branch API does provide a mechanism to control what gets built automatically (known as the BranchBuildStrategy) but that cannot be configured until you have at least one extension plugin that provides a BranchBuildStrategy. 
  
  If you want tags to build automatically, you will need an extension plugin for Branch API that implements at least one BranchBuildStrategy, see AngryBytes/jenkins-build-everything-strategy-plugin for a prototype example of such an extension plugin.

“

Thanks

Lynn

[Steven Foster]

I think you can get that with this:

when {
    expression {
        env.TAG_NAME != null
    }
}

You get the env.TAG_NAME from the branch api when it's a tag build.
A shortcut would be helpful, I suggested it here https://issues.jenkins-ci.org/browse/JENKINS-48523

[Lynn Lin]

Steven Foster <steven...@gmail.com>于2017年12月21日 周四上午9:54写道：

I think you can get that with this:

when {
    expression {
        env.TAG_NAME != null
    }
}

Thanks,it works

You get the env.TAG_NAME from the branch api when it's a tag build.
A shortcut would be helpful, I suggested it here https://issues.jenkins-ci.org/browse/JENKINS-48523

This is even great 

On Wednesday, December 20, 2017 at 7:12:44 AM UTC, Lynn Lin wrote:

HI ,All,

 i followed with page https://wiki.jenkins.io/display/JENKINS/GitHub+Branch+Source+Plugin to enable tag will trigger a new build then the questions comes 

How can I use "when" in declarative pipeline to do something like deployment when a new tag is pushed to remote repository

stage('Example Deploy') {
            when {
                branch 'production' // here how we can use tag as condition 
            }
            steps {
                echo 'Deploying'
            }
        }

"

• When used with the Branch API Plugin, tags will show up as a new category. The default configuration of Branch API will not trigger builds for tags automatically. 
  
  This is by design, as one of the use-cases for tag discovery is to use the tag job to perform deployment. If tags were built automatically, given that the order in which the tag jobs actually execute is undefined, the automatic build could cause significant issues. Branch API does provide a mechanism to control what gets built automatically (known as the BranchBuildStrategy) but that cannot be configured until you have at least one extension plugin that provides a BranchBuildStrategy. 
  
  If you want tags to build automatically, you will need an extension plugin for Branch API that implements at least one BranchBuildStrategy, see AngryBytes/jenkins-build-everything-strategy-plugin for a prototype example of such an extension plugin.

“

Thanks

Lynn

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