| YPZhang | 801d46d | 2016-08-08 13:26:28 -0700 | [diff] [blame^] | 1 | import time |
| 2 | import json |
| 3 | ''' |
| 4 | Warp function for SCPFportLat test |
| 5 | ''' |
| 6 | |
| 7 | def capturePortStatusPack( main, deviceName, interface, portStatus, resultDict, warmup ): |
| 8 | ''' |
| 9 | Change device port status and use tshark to capture openflow port package |
| 10 | Args: |
| 11 | main: TestON class |
| 12 | deviceName: Device to change portStatus |
| 13 | interface: port number |
| 14 | portStatus: up or down |
| 15 | resultDict: put result to dictionary |
| 16 | warmup: if warmpu, ignore results |
| 17 | |
| 18 | ''' |
| 19 | main.log.info( "Clean up tshark" ) |
| 20 | with open( main.tsharkResultPath, "w" ) as tshark: |
| 21 | tshark.write("") |
| 22 | main.log.info( "Starting tshark capture" ) |
| 23 | main.ONOSbench.tsharkGrep( main.ofportStatus, main.tsharkResultPath ) |
| 24 | time.sleep( main.measurementSleep ) |
| 25 | main.log.info( "{} port {} {}".format( deviceName, interface, portStatus ) ) |
| 26 | main.Mininet1.changeInterfaceStatus( deviceName, interface, portStatus ) |
| 27 | time.sleep( main.measurementSleep ) |
| 28 | main.log.info( "Stopping all Tshark processes" ) |
| 29 | main.ONOSbench.tsharkStop() |
| 30 | |
| 31 | # Get tshark output |
| 32 | with open( main.tsharkResultPath, "r" ) as resultFile: |
| 33 | resultText = resultFile.readline() |
| 34 | main.log.info( "Capture result:" + resultText ) |
| 35 | resultText = resultText.split( " " ) |
| 36 | if len( resultText ) > 1: |
| 37 | tsharkResultTime = int( float( resultText[1] ) * 1000.0 ) |
| 38 | resultFile.close() |
| 39 | for i in range( 1, main.numCtrls + 1 ): |
| 40 | main.log.info( "================================================" ) |
| 41 | # get onos metrics timestamps |
| 42 | try: |
| 43 | response = json.loads( main.CLIs[i - 1].topologyEventsMetrics() ) |
| 44 | deviceTime = int( response.get( "topologyDeviceEventTimestamp" ).get( "value" ) ) |
| 45 | main.log.info( "ONOS{} device Event timestemp: {}".format( i, deviceTime ) ) |
| 46 | |
| 47 | linkTime = int( response.get( "topologyLinkEventTimestamp" ).get( "value" ) ) |
| 48 | main.log.info( "ONOS{} Link Event timestemp: {}".format( i, linkTime ) ) |
| 49 | |
| 50 | graphTime = int( response.get( "topologyGraphEventTimestamp" ).get( "value" ) ) |
| 51 | main.log.info( "ONOS{} Graph Event timestemp: {}".format( i, graphTime ) ) |
| 52 | except TypeError: |
| 53 | main.log.warn( "TypeError!" ) |
| 54 | break |
| 55 | except ValueError: |
| 56 | main.log.warn( "Unable to decode Json object!" ) |
| 57 | break |
| 58 | main.log.info( "================================================" ) |
| 59 | # calculate latency |
| 60 | EtoE = graphTime - tsharkResultTime |
| 61 | PtoD = deviceTime - tsharkResultTime |
| 62 | DtoL = linkTime - deviceTime |
| 63 | LtoG = graphTime - linkTime |
| 64 | main.log.info( "ONOS{} End to End time: {}".format( i, EtoE ) ) |
| 65 | main.log.info( "ONOS{} Package to Device time: {}".format( i, PtoD ) ) |
| 66 | main.log.info( "ONOS{} Device to Link time: {}".format( i, DtoL ) ) |
| 67 | main.log.info( "ONOS{} Link to Graph time: {}".format( i, LtoG ) ) |
| 68 | # if less than 0 waring |
| 69 | if EtoE < 0 or PtoD < 0 or DtoL < 0 or LtoG < 0: |
| 70 | main.log.warn( "Latency less than 0! Ingore this loop." ) |
| 71 | else: |
| 72 | # put result to dictionary |
| 73 | if not warmup: |
| 74 | resultDict[ portStatus ][ 'node' + str(i) ]['EtoE'].append( EtoE ) |
| 75 | resultDict[ portStatus ][ 'node' + str(i) ]['PtoD'].append( PtoD ) |
| 76 | resultDict[ portStatus ][ 'node' + str(i) ]['DtoL'].append( DtoL ) |
| 77 | resultDict[ portStatus ][ 'node' + str(i) ]['LtoG'].append( LtoG ) |
| 78 | else: |
| 79 | main.log.error( "Tshark output file for packet_in returned unexpected results" ) |