| """ |
| These functions can be used for topology comparisons |
| """ |
| |
| import time |
| import os |
| import json |
| |
| def sendArpPackage( main, hostList ): |
| import json |
| import time |
| """ |
| send arping package from host |
| return the total hosts number from Onos |
| """ |
| main.log.info( "Sending Arping package..." ) |
| if isinstance(hostList, list): |
| for h in hostList: |
| main.Mininet1.arping( srcHost=h, dstHost="10.0.0.1", output=main.FALSE, noResult=True ) |
| time.sleep(0.5) |
| else: |
| main.Mininet1.arping( srcHost=hostList, dstHost="10.0.0.1", output=main.FALSE, noResult=True ) |
| try: |
| summaryStr = "" |
| summaryStr = json.loads( main.CLIs[0].summary().encode() ) |
| hostNum = summaryStr.get( 'hosts' ) |
| |
| except (TypeError, ValueError): |
| main.log.exception( " Object not as expected: {!r}".format( summaryStr) ) |
| return -1 |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| return -1 |
| |
| return hostNum |