"""
    These functions can be used for topology comparisons
"""
import time
import os
import json


def getAllDevices( main ):
    """
        Return a list containing the devices output from each ONOS node
    """
    devices = []
    threads = []
    for i in range( main.numCtrls ):
        t = main.Thread( target=main.CLIs[ i ].devices,
                         name="devices-" + str( i ),
                         args=[] )
        threads.append( t )
        t.start()

    for t in threads:
        t.join()
        devices.append( t.result )
    return devices


def getAllHosts( main ):
    """
        Return a list containing the hosts output from each ONOS node
    """
    hosts = []
    ipResult = main.TRUE
    threads = []
    for i in range( main.numCtrls ):
        t = main.Thread( target=main.CLIs[ i ].hosts,
                         name="hosts-" + str( i ),
                         args=[] )
        threads.append( t )
        t.start()

    for t in threads:
        t.join()
        hosts.append( t.result )
    return hosts


def getAllPorts( main ):
    """
        Return a list containing the ports output from each ONOS node
    """
    ports = []
    threads = []
    for i in range( main.numCtrls ):
        t = main.Thread( target=main.CLIs[ i ].ports,
                         name="ports-" + str( i ),
                         args=[] )
        threads.append( t )
        t.start()

    for t in threads:
        t.join()
        ports.append( t.result )
    return ports


def getAllLinks( main ):
    """
        Return a list containing the links output from each ONOS node
    """
    links = []
    threads = []
    for i in range( main.numCtrls ):
        t = main.Thread( target=main.CLIs[ i ].links,
                         name="links-" + str( i ),
                         args=[] )
        threads.append( t )
        t.start()

    for t in threads:
        t.join()
        links.append( t.result )
    return links


def getAllClusters( main ):
    """
        Return a list containing the clusters output from each ONOS node
    """
    clusters = []
    threads = []
    for i in range( main.numCtrls ):
        t = main.Thread( target=main.CLIs[ i ].clusters,
                         name="clusters-" + str( i ),
                         args=[] )
        threads.append( t )
        t.start()

    for t in threads:
        t.join()
        clusters.append( t.result )
    return clusters