public virtual void Sampler()
{
long[] value = new long[1];
Instrumentation.Variable <long> var = new _Variable_238(value);
InstrumentationService.Sampler sampler = new InstrumentationService.Sampler();
sampler.Init(4, var);
NUnit.Framework.Assert.AreEqual(sampler.GetRate(), 0f, 0.0001);
sampler.Sample();
NUnit.Framework.Assert.AreEqual(sampler.GetRate(), 0f, 0.0001);
value[0] = 1;
sampler.Sample();
NUnit.Framework.Assert.AreEqual(sampler.GetRate(), (0d + 1) / 2, 0.0001);
value[0] = 2;
sampler.Sample();
NUnit.Framework.Assert.AreEqual(sampler.GetRate(), (0d + 1 + 2) / 3, 0.0001);
value[0] = 3;
sampler.Sample();
NUnit.Framework.Assert.AreEqual(sampler.GetRate(), (0d + 1 + 2 + 3) / 4, 0.0001);
value[0] = 4;
sampler.Sample();
NUnit.Framework.Assert.AreEqual(sampler.GetRate(), (4d + 1 + 2 + 3) / 4, 0.0001);
JSONObject json = (JSONObject) new JSONParser().Parse(sampler.ToJSONString());
NUnit.Framework.Assert.AreEqual(json.Count, 2);
NUnit.Framework.Assert.AreEqual(json["sampler"], sampler.GetRate());
NUnit.Framework.Assert.AreEqual(json["size"], 4L);
StringWriter writer = new StringWriter();
sampler.WriteJSONString(writer);
writer.Close();
json = (JSONObject) new JSONParser().Parse(writer.ToString());
NUnit.Framework.Assert.AreEqual(json.Count, 2);
NUnit.Framework.Assert.AreEqual(json["sampler"], sampler.GetRate());
NUnit.Framework.Assert.AreEqual(json["size"], 4L);
}
public virtual void Sampling()
{
string dir = TestDirHelper.GetTestDir().GetAbsolutePath();
string services = StringUtils.Join(",", Arrays.AsList(typeof(InstrumentationService
).FullName, typeof(SchedulerService).FullName));
Configuration conf = new Configuration(false);
conf.Set("server.services", services);
Org.Apache.Hadoop.Lib.Server.Server server = new Org.Apache.Hadoop.Lib.Server.Server
("server", dir, dir, dir, dir, conf);
server.Init();
Org.Apache.Hadoop.Lib.Service.Instrumentation instrumentation = server.Get <Org.Apache.Hadoop.Lib.Service.Instrumentation
>();
AtomicInteger count = new AtomicInteger();
Instrumentation.Variable <long> varToSample = new _Variable_389(count);
instrumentation.AddSampler("g", "s", 10, varToSample);
Sleep(2000);
int i = count.Get();
NUnit.Framework.Assert.IsTrue(i > 0);
IDictionary <string, IDictionary <string, object> > snapshot = instrumentation.GetSnapshot
();
IDictionary <string, IDictionary <string, object> > samplers = (IDictionary <string,
IDictionary <string, object> >)snapshot["samplers"];
InstrumentationService.Sampler sampler = (InstrumentationService.Sampler)samplers
["g"]["s"];
NUnit.Framework.Assert.IsTrue(sampler.GetRate() > 0);
server.Destroy();
}
public override void AddSampler(string group, string name, int samplingSize, Instrumentation.Variable
<long> variable)
{
InstrumentationService.Sampler sampler = GetToAdd <InstrumentationService.Sampler>
(group, name, samplerLock, samplers);
samplerLock.Lock();
try
{
sampler.Init(samplingSize, variable);
samplersList.AddItem(sampler);
}
finally
{
samplerLock.Unlock();
}
}
