Summing Tempo Worklogs with an Attribute

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.worklog.Worklog
import com.onresolve.scriptrunner.runner.customisers.PluginModule
import com.onresolve.scriptrunner.runner.customisers.WithPlugin
import com.tempoplugin.core.workattribute.api.WorkAttributeService
import com.tempoplugin.core.workattribute.api.WorkAttributeValueService

@WithPlugin("is.origo.jira.tempo-plugin")

@PluginModule
WorkAttributeService workAttributeService

@PluginModule
WorkAttributeValueService workAttributeValueService

def worklogManager = ComponentAccessor.worklogManager

// Get the worklogs of the issue
def worklogs = worklogManager.getByIssue(issue)

// Filter the worklogs which are marked as "Overtime"
def overtimeLogs = worklogs.findAll { worklog ->
    def attribute = workAttributeService.getWorkAttributeByKey("_Overtime_").returnedValue
    workAttributeValueService.getWorkAttributeValueByWorklogAndWorkAttribute(worklog.id, attribute.id).returnedValue
}

// Sum the overtime in seconds. If there aren't any overtime worklogs, just return null
overtimeLogs.sum { Worklog worklog ->
    worklog.timeSpent
} as Long