internal static object Run(string zipkinUri)
{
// connect to the server
var connection = ConnectionMultiplexer.Connect("localhost:6379");
// Configure exporter to export traces to Zipkin
using var tracerFactory = TracerFactory.Create(builder => builder
.UseZipkin(o =>
{
o.ServiceName = "redis-test";
o.Endpoint = new Uri(zipkinUri);
})
.AddInstrumentation(t =>
{
var instrumentation = new StackExchangeRedisCallsInstrumentation(t);
connection.RegisterProfiler(instrumentation.GetProfilerSessionsFactory());
return(instrumentation);
}));
var tracer = tracerFactory.GetTracer("redis-test");
// select a database (by default, DB = 0)
var db = connection.GetDatabase();
// Create a scoped span. It will end automatically when using statement ends
using (tracer.StartActiveSpan("Main", out _))
{
Console.WriteLine("About to do a busy work");
for (var i = 0; i < 10; i++)
{
DoWork(db, tracer);
}
}
return(null);
}
public async Task ProfilerSessionsHandleMultipleSpans()
{
var connectionOptions = new ConfigurationOptions
{
AbortOnConnectFail = false,
};
connectionOptions.EndPoints.Add("localhost:6379");
var connection = ConnectionMultiplexer.Connect(connectionOptions);
using var instrumentation = new StackExchangeRedisCallsInstrumentation(connection, new StackExchangeRedisCallsInstrumentationOptions());
var profilerFactory = instrumentation.GetProfilerSessionsFactory();
// start a root level activity
using Activity rootActivity = new Activity("Parent")
.SetParentId(ActivityTraceId.CreateRandom(), ActivitySpanId.CreateRandom(), ActivityTraceFlags.Recorded)
.Start();
Assert.NotNull(rootActivity.Id);
// get an initial profiler from root activity
Activity.Current = rootActivity;
ProfilingSession profiler0 = profilerFactory();
// expect different result from synchronous child activity
ProfilingSession profiler1;
using (Activity.Current = new Activity("Child-Span-1").SetParentId(rootActivity.Id).Start())
{
profiler1 = profilerFactory();
Assert.NotSame(profiler0, profiler1);
}
Activity.Current = rootActivity;
// expect different result from asynchronous child activity
using (Activity.Current = new Activity("Child-Span-2").SetParentId(rootActivity.Id).Start())
{
// lose async context on purpose
await Task.Delay(100).ConfigureAwait(false);
ProfilingSession profiler2 = profilerFactory();
Assert.NotSame(profiler0, profiler2);
Assert.NotSame(profiler1, profiler2);
}
Activity.Current = rootActivity;
// ensure same result back in root activity
ProfilingSession profiles3 = profilerFactory();
Assert.Same(profiler0, profiles3);
}
public async void ProfilerSessionUsesTheSameDefault()
{
var connectionOptions = new ConfigurationOptions
{
AbortOnConnectFail = false,
};
connectionOptions.EndPoints.Add("localhost:6379");
var connection = ConnectionMultiplexer.Connect(connectionOptions);
using var instrumentation = new StackExchangeRedisCallsInstrumentation(connection, new StackExchangeRedisCallsInstrumentationOptions());
var profilerFactory = instrumentation.GetProfilerSessionsFactory();
var first = profilerFactory();
var second = profilerFactory();
ProfilingSession third = null;
await Task.Delay(1).ContinueWith((t) => { third = profilerFactory(); });
Assert.Equal(first, second);
Assert.Equal(second, third);
}
public void CheckCacheIsFlushedProperly()
{
var connectionOptions = new ConfigurationOptions
{
AbortOnConnectFail = false,
};
connectionOptions.EndPoints.Add("localhost:6379");
var connection = ConnectionMultiplexer.Connect(connectionOptions);
using var instrumentation = new StackExchangeRedisCallsInstrumentation(connection, new StackExchangeRedisCallsInstrumentationOptions());
var profilerFactory = instrumentation.GetProfilerSessionsFactory();
// start a root level activity
using Activity rootActivity = new Activity("Parent")
.SetParentId(ActivityTraceId.CreateRandom(), ActivitySpanId.CreateRandom(), ActivityTraceFlags.Recorded)
.Start();
Assert.NotNull(rootActivity.Id);
// get an initial profiler from root activity
Activity.Current = rootActivity;
ProfilingSession profiler0 = profilerFactory();
// expect different result from synchronous child activity
ProfilingSession profiler1;
using (Activity.Current = new Activity("Child-Span-1").SetParentId(rootActivity.Id).Start())
{
profiler1 = profilerFactory();
Assert.NotSame(profiler0, profiler1);
}
rootActivity.Stop();
rootActivity.Dispose();
instrumentation.Flush();
Assert.Empty(instrumentation.Cache);
}