python自动生成OPNET场景

xuyaxiu

　　OPNET做仿真是比较牛的，但是opnet似乎没有特别好的方法来读场景，特别是无线仿真中如果节点坐标是别人给定好的，这个时候我觉得比较方便的方法是自己用python写个script来生成xml文件，然后在opnet中的topology来import这个xml文件。下面是我写的函数，很简单原始，也没用xml的工具库，就把xml当文本文件来处理了。
　　


'''
Created on Dec 22, 2010
@author: hankgong
'''
def writeHeader():
outstr= \
'''<?xml version="1.0"?>
<!DOCTYPE network SYSTEM "network.dtd">
<network locale="C" version="1.7" reference_time="13:28:25.000 Dec 18 2010" attribute_processing="explicit">
<subnet name="Campus Network">
'''
return outstr
def writeFeeter():
outstr= \
'''        <attr name="priority" value="0"/>
<attr name="user id" value="0"/>
<attr name="x position" value="0.0"/>
<attr name="y position" value="0.0"/>
<attr name="icon name" value="subnet"/>
<attr name="outline color" value="blue"/>
<attr name="doc file" value="nt_fixed_subnet"/>
<attr name="creation source" value="Object Palette"/>
<attr name="creation timestamp" value="13:21:18 Dec 18 2010"/>
<attr name="creation data" value=""/>
<characteristic name="units" value="Kilometers"/>
</subnet>
</network>
'''
return outstr
def writeRXGroup(x, y, commrange):
outstr=\
'''        <node name="RXGroup" model="MWSReceiverGroup" ignore_questions="true" min_match_score="strict matching">
<attr name="x position" value="'''+str(x)+'''"/>
<attr name="y position" value="'''+str(y)+'''"/>
<attr name="threshold" value="0.0"/>
<attr name="icon name" value="util_rxgroup"/>
<attr name="doc file" value="nt_fixed_node"/>
<attr name="tooltip" value="Receiver Group Configuration"/>
<attr name="creation source" value="Object copy"/>
<attr name="creation timestamp" value="13:24:05 Dec 18 2010"/>
<attr name="creation data" value=""/>
<attr name="label color" value="black"/>
<attr name="drgm.Use Connection File" value="enabled"/>
<attr name="Distance Threshold (meters)" value="'''+str(commrange)+'''" symbolic="true"/>
</node>
'''
return outstr
def writeSeverNode(x, y):
outstr=\
'''        <node name="Scheduler Sever" model="CentralSever" ignore_questions="true" min_match_score="strict matching">
<attr name="x position" value="'''+str(x)+'''"/>
<attr name="y position" value="'''+str(y)+'''"/>
<attr name="icon name" value="server"/>
<attr name="doc file" value=""/>
<attr name="tooltip" value=""/>
<attr name="creation source" value="Object Palette"/>
<attr name="creation timestamp" value="13:45:17 Dec 18 2010"/>
<attr name="creation data" value=""/>
</node>
'''
return outstr
def writeMNNode(x, y, node_ip, flow_dst_ip, startTime, stopTime, pktSize, intervalStr='constant (0.015)'):
outstr=\
'''        <node name="node_'''+str(node_ip)+'''" model="MWSCentralMN" ignore_questions="true" min_match_score="strict matching">
<attr name="x position" value="'''+str(x)+'''"/>
<attr name="y position" value="'''+str(y)+'''"/>
<attr name="threshold" value="0.0"/>
<attr name="icon name" value="armoured_jeep.chassis"/>
<attr name="doc file" value=""/>
<attr name="tooltip" value=""/>
<attr name="creation source" value="Object Palette"/>
<attr name="creation timestamp" value="13:42:43 Dec 18 2010"/>
<attr name="creation data" value=""/>
<attr name="label color" value="black"/>
<attr name="flow_dst_ip" value="'''+str(flow_dst_ip)+'''"/>
<attr name="node_ip" value="'''+str(node_ip)+'''"/>
<attr name="traffic_gen.Packet Interarrival Time" value="'''+intervalStr+'''"/>
<attr name="traffic_gen.Packet Size" value="constant ('''+str(pktSize)+''')"/>
<attr name="traffic_gen.Start Time" value="'''+str(startTime)+'''"/>
<attr name="traffic_gen.Stop Time" value="'''+str(stopTime)+'''"/>
</node>
'''
return outstr
#print writeHeader()
#print writeRXGroup(0,0,1000)
#print writeSeverNode(1,1)
#print writeMNNode(5.02, 6.03, 3, 0, 10.1, 20)
#print writeFeeter()