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SystemTester.cs
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SystemTester.cs
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using System;
using System.IO;
using System.Collections;
using System.Xml;
using System.Xml.Serialization;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using Brunet;
using Brunet.DistributedServices;
namespace Test {
public class SystemTest {
static SortedList nodes = new SortedList();
static Hashtable dhts = new Hashtable();
static int network_size, base_time, add_remove_interval, dht_put_interval,
dht_get_interval, max_range, add_remove_delta;
static int base_port = 45111;
static int DEGREE = 3;
static Random rand = new Random();
static string brunet_namespace = "testing";
static Hashtable taken_ports = new Hashtable();
static ArrayList RemoteTA = new ArrayList();
public static void Main(string []args) {
if (args.Length < 6) {
Console.WriteLine("Input format %1 %2 %3 %4 %5 %6");
Console.WriteLine("\t%1 = [network size]");
Console.WriteLine("\t%2 = [base time]");
Console.WriteLine("\t%3 = [add/remove interval]");
Console.WriteLine("\t%4 = [add/remove delta]");
Console.WriteLine("\t%5 = [dht put interval]");
Console.WriteLine("\t%6 = [dht get interval]");
Console.WriteLine("Specifying 3, 4, 5, 6 disables the event.");
Environment.Exit(0);
}
int starting_network_size = Int32.Parse(args[0]);
max_range = starting_network_size;
base_time = Int32.Parse(args[1]);
add_remove_interval = Int32.Parse(args[2]);
add_remove_delta = Int32.Parse(args[3]);
dht_put_interval = Int32.Parse(args[4]);
dht_get_interval = Int32.Parse(args[5]);
Console.WriteLine("Initializing...");
for(int i = 0; i < max_range; i++) {
RemoteTA.Add(TransportAddressFactory.CreateInstance("brunet.tcp://127.0.0.1:" + (base_port + i)));
}
for(int i = 0; i < starting_network_size; i++) {
Console.WriteLine("Setting up node: " + i);
add_node();
}
Console.WriteLine("Done setting up...\n");
Thread system_thread = new Thread(system);
system_thread.IsBackground = true;
system_thread.Start();
string command = String.Empty;
while (command != "Q") {
Console.WriteLine("Enter command (M/C/P/G/Q)");
command = Console.ReadLine();
if(command.Equals("C")) {
check_ring();
}
else if(command.Equals("M")) {
Console.WriteLine("Memory Usage: " + GC.GetTotalMemory(true));
}
else if(command.Equals("P")) {
PrintConnections();
}
else if(command.Equals("G")) {
Node node = (Node) nodes.GetByIndex(rand.Next(0, network_size));
Dht dht = (Dht) dhts[node];
BlockingQueue returns = new BlockingQueue();
dht.AsyncGet(Encoding.UTF8.GetBytes("tester"), returns);
int count = 0;
try {
while(true) {
returns.Dequeue();
count++;
}
}
catch {}
Console.WriteLine("Count: " + count);
}
Console.WriteLine();
}
system_thread.Abort();
int lcount = 0;
foreach(DictionaryEntry de in nodes) {
Console.WriteLine(lcount++);
Node node = (Node)de.Value;
node.Disconnect();
}
}
public static void system() {
try {
int interval = 1;
while(true) {
Thread.Sleep(base_time * 1000);
if(add_remove_interval != 0 && interval % add_remove_interval == 0) {
Console.Error.WriteLine("System.Test::add / removing...");
for(int i = 0; i < add_remove_delta; i++) {
remove_node();
while(true) {
try {
add_node();
break;
}
catch (ThreadAbortException) { return; }
catch {}
}
}
}
if(dht_put_interval != 0 && interval % dht_put_interval == 0) {
Console.Error.WriteLine("System.Test::Dht put.");
dht_put();
}
if(dht_get_interval != 0 && interval % dht_get_interval == 0) {
Console.Error.WriteLine("System.Test::Dht get.");
dht_get();
}
interval++;
}
}
catch (ThreadAbortException){}
catch (Exception e){
Console.WriteLine(e);
}
}
private static void dht_put() {
foreach(DictionaryEntry de in nodes) {
Node node = (Node)de.Value;
Dht dht = (Dht) dhts[node];
Channel returns = new Channel();
dht.AsyncPut(Encoding.UTF8.GetBytes("tester"),
Encoding.UTF8.GetBytes(node.Address.ToString()),
2 * base_time * dht_put_interval, returns);
}
}
private static void dht_get() {
for(int i = 0; i < network_size / 25; i++) {
int index = rand.Next(0, network_size);
Node node = (Node) nodes.GetByIndex(index);
Dht dht = (Dht) dhts[node];
Channel returns = new Channel();
dht.AsyncGet(Encoding.UTF8.GetBytes("tester"), returns);
}
}
private static void remove_node() {
int local_port = 0;
while(!taken_ports.Contains(local_port = rand.Next(0, max_range) + base_port));
Node node = (Node) taken_ports[local_port];
node.Disconnect();
nodes.RemoveAt(nodes.IndexOfValue(node));
taken_ports.Remove(local_port);
dhts.Remove(node);
network_size--;
}
private static void add_node() {
int local_port = 0;
while(taken_ports.Contains(local_port = rand.Next(0, max_range) + base_port));
AHAddress address = new AHAddress(new RNGCryptoServiceProvider());
Node node = new StructuredNode(address, brunet_namespace);
ArrayList arr_tas = new ArrayList();
for(int j = 0; j < max_range / 10; j++) {
int remote_port = 0;
do {
remote_port = rand.Next(0, max_range) + base_port;
} while(remote_port == local_port);
PortTAAuthorizer port_auth = new PortTAAuthorizer(remote_port);
arr_tas.Add(port_auth);
}
arr_tas.Add(new ConstantAuthorizer(TAAuthorizer.Decision.Allow));
TAAuthorizer ta_auth = new SeriesTAAuthorizer(arr_tas);
node.AddEdgeListener(new TcpEdgeListener(local_port, null));//, ta_auth));
// node.AddEdgeListener(new Tunnel.TunnelEdgeListener(node));
node.RemoteTAs = RemoteTA;
(new Thread(node.Connect)).Start();
taken_ports[local_port] = node;
nodes.Add((Address) address, node);
new TableServer(node);
dhts.Add(node, new Dht(node, DEGREE));
network_size++;
}
private static bool check_ring() {
Console.WriteLine("Checking ring...");
Address start_addr = (Address) nodes.GetKeyList()[0];
Address curr_addr = start_addr;
for (int i = 0; i < network_size; i++) {
Node node = (Node) nodes[curr_addr];
ConnectionTable con_table = node.ConnectionTable;
Connection con = con_table.GetLeftStructuredNeighborOf((AHAddress) curr_addr);
if(con == null) {
Console.WriteLine("Found no connection.");
return false;
}
Console.WriteLine("Hop {2}\t Address {0}\n\t Connection to left {1}\n", curr_addr, con, i);
Address next_addr = con.Address;
if (next_addr == null) {
Console.WriteLine("Found no connection.");
return false;
}
Connection lc = ((Node)nodes[next_addr]).ConnectionTable.GetRightStructuredNeighborOf((AHAddress) next_addr);
if( (lc == null) || !curr_addr.Equals(lc.Address)) {
Address left_addr = lc.Address;
Console.WriteLine(curr_addr + " != " + left_addr);
Console.WriteLine("Right had edge, but left has no record of it!\n{0} != {1}", con, lc);
return false;
}
else if(next_addr.Equals(start_addr) && i != network_size -1) {
Console.WriteLine("Completed circle too early. Only {0} nodes in the ring.",
(i + 1));
return false;
}
curr_addr = next_addr;
}
if(start_addr.Equals(curr_addr)) {
Console.WriteLine("Ring properly formed!");
return true;
}
return false;
}
private static void PrintConnections() {
foreach(DictionaryEntry de in nodes) {
Node node = (Node)de.Value;
IEnumerable ie = node.ConnectionTable.GetConnections(ConnectionType.Structured);
Console.WriteLine("Connections for Node: " + node.Address);
foreach(Connection c in ie) {
Console.WriteLine(c);
}
Console.WriteLine("==============================================================");
}
}
}
}