Archive Issues in an Epic

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.archiving.ArchivedIssueService
import com.atlassian.greenhopper.manager.issuelink.EpicLinkManager

import com.onresolve.scriptrunner.runner.customisers.WithPlugin
import com.onresolve.scriptrunner.runner.customisers.JiraAgileBean

@WithPlugin("com.pyxis.greenhopper.jira")

@JiraAgileBean
EpicLinkManager epicLinkManager

def archivedIssueService = ComponentAccessor.getComponent(ArchivedIssueService)
def user = ComponentAccessor.jiraAuthenticationContext.loggedInUser

def epicIssue = event.issue // the epic issue
def epicType = epicIssue.issueType.name.toString()

if (epicType != 'Epic') {
    return
}

def issuesInEpic = epicLinkManager.getIssuesInEpic(epicIssue)

issuesInEpic.each {
    def validationArchive = archivedIssueService.validateArchiveIssue(user, it.key, false)

    if (validationArchive.valid) {
        archivedIssueService.archiveIssue(validationArchive)
    }
}