A Discrete-Event Network Simulator
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inet-topology-reader.cc
Go to the documentation of this file.
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/*
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* Copyright (c) 2010 Universita' di Firenze, Italy
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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* Author: Tommaso Pecorella (tommaso.pecorella@unifi.it)
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* Author: Valerio Sartini (Valesar@gmail.com)
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*/
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#include "
inet-topology-reader.h
"
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#include "ns3/log.h"
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#include "ns3/names.h"
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#include "ns3/node-container.h"
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#include <cstdlib>
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#include <fstream>
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#include <sstream>
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/**
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* @file
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* @ingroup topology
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* ns3::InetTopologyReader implementation.
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*/
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namespace
ns3
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{
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NS_LOG_COMPONENT_DEFINE
(
"InetTopologyReader"
);
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NS_OBJECT_ENSURE_REGISTERED
(
InetTopologyReader
);
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TypeId
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InetTopologyReader::GetTypeId
()
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{
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static
TypeId
tid =
TypeId
(
"ns3::InetTopologyReader"
)
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.
SetParent
<
TopologyReader
>()
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.SetGroupName(
"TopologyReader"
)
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.AddConstructor<
InetTopologyReader
>();
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return
tid;
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}
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InetTopologyReader::InetTopologyReader
()
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{
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NS_LOG_FUNCTION
(
this
);
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}
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InetTopologyReader::~InetTopologyReader
()
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{
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NS_LOG_FUNCTION
(
this
);
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}
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NodeContainer
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InetTopologyReader::Read
()
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{
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std::ifstream topgen;
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topgen.open(
GetFileName
());
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std::map<std::string, Ptr<Node>> nodeMap;
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NodeContainer
nodes
;
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if
(!topgen.is_open())
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{
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NS_LOG_WARN
(
"Inet topology file object is not open, check file name and permissions"
);
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return
nodes
;
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}
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std::string from;
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std::string to;
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std::string linkAttr;
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int
linksNumber = 0;
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int
nodesNumber = 0;
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int
totnode = 0;
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int
totlink = 0;
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std::istringstream lineBuffer;
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std::string line;
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getline(topgen, line);
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lineBuffer.str(line);
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lineBuffer >> totnode;
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lineBuffer >> totlink;
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NS_LOG_INFO
(
"Inet topology should have "
<< totnode <<
" nodes and "
<< totlink <<
" links"
);
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for
(
int
i = 0; i < totnode && !topgen.eof(); i++)
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{
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getline(topgen, line);
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}
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for
(
int
i = 0; i < totlink && !topgen.eof(); i++)
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{
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getline(topgen, line);
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lineBuffer.clear();
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lineBuffer.str(line);
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lineBuffer >> from;
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lineBuffer >> to;
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lineBuffer >> linkAttr;
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if
((!from.empty()) && (!to.empty()))
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{
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NS_LOG_INFO
(
"Link "
<< linksNumber <<
" from: "
<< from <<
" to: "
<< to);
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if
(!nodeMap[from])
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{
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NS_LOG_INFO
(
"Node "
<< nodesNumber <<
" name: "
<< from);
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Ptr<Node>
tmpNode =
CreateObject<Node>
();
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std::string nodeName =
"InetTopology/NodeName/"
+ from;
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Names::Add
(from, tmpNode);
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nodeMap[from] = tmpNode;
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nodes
.Add(tmpNode);
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nodesNumber++;
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}
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if
(!nodeMap[to])
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{
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NS_LOG_INFO
(
"Node "
<< nodesNumber <<
" name: "
<< to);
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Ptr<Node>
tmpNode =
CreateObject<Node>
();
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std::string nodename =
"InetTopology/NodeName/"
+ to;
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Names::Add
(nodename, tmpNode);
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nodeMap[to] = tmpNode;
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nodes
.Add(tmpNode);
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nodesNumber++;
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}
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Link
link(nodeMap[from], from, nodeMap[to], to);
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if
(!linkAttr.empty())
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{
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NS_LOG_INFO
(
"Link "
<< linksNumber <<
" weight: "
<< linkAttr);
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link.SetAttribute(
"Weight"
, linkAttr);
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}
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AddLink
(link);
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linksNumber++;
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}
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}
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NS_LOG_INFO
(
"Inet topology created with "
<< nodesNumber <<
" nodes and "
<< linksNumber
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<<
" links"
);
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topgen.close();
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return
nodes
;
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}
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}
/* namespace ns3 */
ns3::InetTopologyReader
Topology file reader (Inet-format type).
Definition
inet-topology-reader.h:41
ns3::InetTopologyReader::Read
NodeContainer Read() override
Main topology reading function.
Definition
inet-topology-reader.cc:53
ns3::InetTopologyReader::GetTypeId
static TypeId GetTypeId()
Get the type ID.
Definition
inet-topology-reader.cc:33
ns3::InetTopologyReader::InetTopologyReader
InetTopologyReader()
Definition
inet-topology-reader.cc:42
ns3::InetTopologyReader::~InetTopologyReader
~InetTopologyReader() override
Definition
inet-topology-reader.cc:47
ns3::Names::Add
static void Add(std::string name, Ptr< Object > object)
Add the association between the string "name" and the Ptr<Object> obj.
Definition
names.cc:764
ns3::NodeContainer
keep track of a set of node pointers.
Definition
node-container.h:29
ns3::Ptr
Smart pointer class similar to boost::intrusive_ptr.
Definition
ptr.h:66
ns3::TopologyReader::Link
Inner class holding the details about a link between two nodes.
Definition
topology-reader.h:50
ns3::TopologyReader::AddLink
void AddLink(Link link)
Adds a link to the topology.
Definition
topology-reader.cc:84
ns3::TopologyReader::GetFileName
std::string GetFileName() const
Returns the input file name.
Definition
topology-reader.cc:52
ns3::TopologyReader::TopologyReader
TopologyReader()
Definition
topology-reader.cc:35
ns3::TypeId
a unique identifier for an interface.
Definition
type-id.h:49
ns3::TypeId::SetParent
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition
type-id.cc:1001
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition
log.h:191
NS_LOG_FUNCTION
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
Definition
log-macros-enabled.h:229
NS_LOG_WARN
#define NS_LOG_WARN(msg)
Use NS_LOG to output a message of level LOG_WARN.
Definition
log.h:250
NS_LOG_INFO
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition
log.h:264
ns3::CreateObject
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition
object.h:619
NS_OBJECT_ENSURE_REGISTERED
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition
object-base.h:35
inet-topology-reader.h
ns3::InetTopologyReader declaration.
nodes
NodeContainer nodes
Definition
lr-wpan-bootstrap.cc:43
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
src
topology-read
model
inet-topology-reader.cc
Generated on Wed Jun 11 2025 13:15:38 for ns-3 by
1.13.2