Enable setting slaveConnectTimeout in podTemplate defined in pipeline

[kayano]

This PR enable to redefine default slaveConnectTimeout for podTemplate declared in pipeline, eg.

podTemplate(
    label: 'mypod', 
    containers: [
        containerTemplate(name: 'busybox', image: 'busybox', ttyEnabled: true, command: '/bin/cat'),
    ],
    slaveConnectTimeout: 200
) {
    node ('mypod') {
        stage('Run') {
            container('busybox') {
                sh 'echo "pwd is -$(pwd)-"'
            }
        }
    }
}

[carlossg]

thanks!

[piyush-garg]

@kayano @carlossg Thanks for this feature. What I am able to understand is that this is regarding if slave pod not able to connect to master then it will timeout after the mentioned time.

But I have some doubts regarding this if you can clear.

Is my understanding correct ?

The value provided is in seconds I think?

Right now if slave pod does not come up it throws message like, and fails

Still waiting to schedule task
Jenkins doesn’t have label mavenprojectname_2

After this variable does it throw some nice user understandable error or can we somehow achieve that to put nice error message?

Thanks in advance.

cc @hrishin

[piyush-garg]

@kayano @carlossg I tried this feature works fine. If it fails to connect in that much time period, it terminates that port and new pod come up but this thing happens infinite time. Can you help me with any method that we can make it try for a fixed number of times and then fail with some error and we can show a nice error message to the user.

I am not able to figure out that. If you can help me here, it will be great. Thanks a lot in advance.

cc @hrishin