public void HeartbeatService_Basic()
{
// Verify that heartbeat service works by modifying its configuration file
// to monitor two simulated services and then verify that the monitoring
// works.
HttpServer httpServer = null;
Process svcProcess = null;
ConfigRewriter rewriter;
Assembly assembly;
string iniPath;
assembly = typeof(LillTek.Datacenter.HeartbeatService.Program).Assembly;
iniPath = Config.GetConfigPath(assembly);
rewriter = new ConfigRewriter(iniPath);
try
{
// Initialize the local HTTP server that will simulate the monitored services.
httpServer = new HttpServer(new IPEndPoint[] { new IPEndPoint(IPAddress.Any, 666) }, new IHttpModule[] { this }, 10, 10, 8196);
httpServer.Start();
host2Health = new Dictionary <string, bool>(StringComparer.OrdinalIgnoreCase);
host2Health["testservice01.lilltek.com"] = true;
host2Health["testservice02.lilltek.com"] = true;
host2Health["testservice03.lilltek.com"] = true;
// Rewrite the config file to have it start in hub mode
// and then start the router service as a form application.
rewriter.Rewrite(new ConfigRewriteTag[0]);
// $hack(jeff.lill):
//
// Append test related settings to the configuration file. Since these settings
// appear after the defaults, the written settings will override.
using (var file = File.AppendText(iniPath))
{
const string prefix = "LillTek.Datacenter.HeartbeatService.";
file.WriteLine(prefix + "MonitorUri[0] = http://testservice01.lilltek.com:666/Heartbeat.aspx?global=0");
file.WriteLine(prefix + "MonitorUri[1] = http://testservice02.lilltek.com:666/Heartbeat.aspx?global=0");
file.WriteLine(prefix + "MonitorUri[2] = http://testservice03.lilltek.com:666/Heartbeat.aspx?global=0");
file.WriteLine(prefix + "BkInterval = 1s");
file.WriteLine(prefix + "PollInterval = 1s");
}
svcProcess = Helper.StartProcess(assembly, "-mode:form -start");
Thread.Sleep(10000); // Give the process a chance to spin up
// Give the service a chance to ping the test a few times and then
// make a request to the heartbeat handler to verify that it indicates
// that the server is healthy.
Thread.Sleep(3000);
Assert.IsTrue(GetHealth());
// Now indicate that the first target service is unhealthy, give the heartbeat
// handler a chance to ping the service, and verify that it determined
// the server is unhealthy.
host2Health["testservice01.lilltek.com"] = false;
Thread.Sleep(3000);
Assert.IsFalse(GetHealth());
// Now indicate that the first target service is healthy, give the heartbeat
// handler a chance to ping the service, and verify that it determined
// the server is healthy.
host2Health["testservice01.lilltek.com"] = true;
Thread.Sleep(3000);
Assert.IsTrue(GetHealth());
// Now indicate that the second and third target services are unhealthy, give the heartbeat
// handler a chance to ping the service, and verify that it determined
// the server is unhealthy.
host2Health["testservice02.lilltek.com"] = false;
host2Health["testservice03.lilltek.com"] = false;
Thread.Sleep(3000);
Assert.IsFalse(GetHealth());
// Now mark the second service as healthy and verify that the
// server is still unhealthy (due to the third service).
host2Health["testservice02.lilltek.com"] = true;
Thread.Sleep(3000);
Assert.IsFalse(GetHealth());
// Now mark all services as healthy and verify that
// the server is considered healthy.
host2Health["testservice03.lilltek.com"] = true;
Thread.Sleep(3000);
Assert.IsTrue(GetHealth());
// Stop the simulated target HTTP server and verify that the handler
// detects the failure.
httpServer.Stop();
httpServer = null;
Thread.Sleep(3000);
Assert.IsFalse(GetHealth());
}
finally
{
rewriter.Restore();
if (httpServer != null)
{
httpServer.Stop();
httpServer = null;
}
if (svcProcess != null)
{
svcProcess.Kill();
svcProcess.Close();
}
}
}
public void RouterService_RootMode()
{
// Verify that the router service actually deploys a root router
// by starting an instance of the application and a couple of
// hub routers and making sure that the service is routing messages
// between the two hubs.
Process svcProcess = null;
HubRouter hub1 = null;
HubRouter hub2 = null;
ConfigRewriter rewriter;
Assembly assembly;
string iniPath;
assembly = typeof(LillTek.Datacenter.RouterService.Program).Assembly;
iniPath = Config.GetConfigPath(assembly);
rewriter = new ConfigRewriter(iniPath);
try
{
// Rewrite the config file to have it start in root mode
// and then start the router service as a form application.
rewriter.Rewrite(new ConfigRewriteTag[] { new ConfigRewriteTag("Mode", "#undef HUBMODE\r\n#define ROOTMODE\r\n#define HUBNAME hub\r\n") });
svcProcess = Helper.StartProcess(assembly, "-mode:form -start");
Thread.Sleep(10000); // Give the process a chance to spin up
// Crank up a couple of hub routers and send a message from
// one to the other.
hub1 = CreateHub(Helper.MachineName + ":" + Const.DCRootPort.ToString(), "hub1", group1);
hub2 = CreateHub(Helper.MachineName + ":" + Const.DCRootPort.ToString(), "hub2", group2);
Thread.Sleep(2000);
recvMsg = null;
hub1.SendTo("logical://hub2", new PropertyMsg());
Thread.Sleep(1000);
Assert.IsNotNull(recvMsg);
}
finally
{
rewriter.Restore();
if (svcProcess != null)
{
svcProcess.Kill();
svcProcess.Close();
}
if (hub1 != null)
{
hub1.Stop();
}
if (hub2 != null)
{
hub2.Stop();
}
}
}
public void ConfigRewriter_Test()
{
string fname = Path.GetTempPath() + "ConfigRewriteTest.ini";
ConfigRewriter rewriter = new ConfigRewriter(fname);
StreamReader reader = null;
StreamWriter writer = null;
string orgText =
@"
// This is a test
foo=bar
// $replace(tag1)
-- $REPLACE(TAG2)
bar=foo
// $(
";
string newText =
@"
// This is a test
foo=bar
key1=10
key2=20
bar=foo
// $(
";
try
{
writer = new StreamWriter(fname);
writer.Write(orgText);
writer.Close();
writer = null;
rewriter.Restore(); // This shouldn't case a problem
rewriter.Rewrite(new ConfigRewriteTag[] { new ConfigRewriteTag("tag1", "key1=10"), new ConfigRewriteTag("tag2", "key2=20\r\n") });
reader = new StreamReader(fname);
Assert.AreEqual(newText, reader.ReadToEnd());
reader.Close();
reader = null;
rewriter.Restore();
reader = new StreamReader(fname);
Assert.AreEqual(orgText, reader.ReadToEnd());
reader.Close();
reader = null;
rewriter.Restore(); // This shouldn't case a problem
}
finally
{
if (reader != null)
{
reader.Close();
}
if (writer != null)
{
writer.Close();
}
if (File.Exists(fname))
{
File.Delete(fname);
}
}
}
public void RouterService_HubMode()
{
// Verify that the router service actually deploys a hub router
// by starting an instance of the application and a couple of
// non-P2P leaf routers and making sure that the service is
// routing messages between the two leaves.
Process svcProcess = null;
LeafRouter leaf1 = null;
LeafRouter leaf2 = null;
ConfigRewriter rewriter;
Assembly assembly;
string iniPath;
assembly = typeof(LillTek.Datacenter.RouterService.Program).Assembly;
iniPath = Config.GetConfigPath(assembly);
rewriter = new ConfigRewriter(iniPath);
try
{
// Rewrite the config file to have it start in hub mode
// and then start the router service as a form application.
rewriter.Rewrite(new ConfigRewriteTag[] { new ConfigRewriteTag("Mode", "#define HUBMODE\r\n#undef ROOTMODE\r\n#define HUBNAME hub\r\n") });
svcProcess = Helper.StartProcess(assembly, "-mode:form -start");
Thread.Sleep(10000); // Give the process a chance to spin up
// Crank up a couple of leaf routers and send a message from
// one to the other.
leaf1 = CreateLeaf("detached", Const.DCDefHubName, "leaf1", Const.DCCloudEP.ToString(), false);
leaf2 = CreateLeaf("detached", Const.DCDefHubName, "leaf2", Const.DCCloudEP.ToString(), false);
Thread.Sleep(2000);
recvMsg = null;
leaf1.SendTo("logical://leaf2", new PropertyMsg());
Thread.Sleep(1000);
Assert.IsNotNull(recvMsg);
}
finally
{
rewriter.Restore();
if (svcProcess != null)
{
svcProcess.Kill();
svcProcess.Close();
}
if (leaf1 != null)
{
leaf1.Stop();
}
if (leaf2 != null)
{
leaf2.Stop();
}
}
}