05-Component/s变更时经办人跟随新的Component Lead

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.IssueManager
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.event.type.EventDispatchOption;
import com.atlassian.jira.component.ComponentAccessor

def changeHistoryManager = ComponentAccessor.getChangeHistoryManager()
def issueManager = ComponentAccessor.getIssueManager();
 
//def currentIssue = Issues.getByKey("TEST2-2") as MutableIssue
def currentIssue = event.issue as MutableIssue
 
def components = currentIssue.getComponents()
//如果存在多个模块，这里只取第一个模块的lead
def componentLeader = components.getAt(0).componentLead

def changeHistories = changeHistoryManager.getChangeHistories(event.issue)
if (changeHistories) {
    //log
    changeHistories.last().getChangeItemBeans().each { it-> {
        log.warn("修改项： ${it.field}")
    } }

    def changeItem = changeHistories.last().getChangeItemBeans().find {
        // 检查Assignee是否修改了
        it.field == 'assignee' && it.fromString != it.toString
    }
    def changeItem2 = changeHistories.last().getChangeItemBeans().find {
        // 检查Assignee是否修改了
        it.field == 'Component' && it.fromString != it.toString
    }

    //如果修改了经办人就不按Component来，以用户修改的为准
    if (changeItem) {

    } else if(changeItem2) {
        //如果修改了模块就按模块Leader来
        currentIssue.setAssignee(componentLeader)
        issueManager.updateIssue(ComponentAccessor.getJiraAuthenticationContext().getLoggedInUser(), currentIssue, EventDispatchOption.ISSUE_UPDATED, true);
    }
    //修改其它字段不处理。
    
}