public override object ExecuteScalar()
{
object result;
var commandId = Guid.NewGuid();
using (var trace = new LocalTrace(this.CommandText).AnnotateWith(PredefinedTag.SqlQuery, this.CommandText))
{
try
{
result = InnerCommand.ExecuteScalar();
}
catch (Exception exception)
{
trace.AnnotateWith(PredefinedTag.Error, exception.Message);
throw;
}
}
return(result);
}
static void Main(string[] args)
{
new Zipkin.ZipkinBootstrapper("api-sample", IPAddress.Loopback, 1234)
.ZipkinAt("localhost")
.WithSampleRate(1.0) // means log everything
.Start();
using (var roottrace = new StartClientTrace("client-op")) // Starts a root trace + span
{
var crossProcessBag = new Dictionary <string, object>();
TraceContextPropagation.PropagateTraceIdOnto(crossProcessBag);
Thread.Sleep(20);
roottrace.TimeAnnotateWith("custom");
using (new StartServerTrace("server-op", crossProcessBag).SetLocalComponentName("fake-server"))
{
using (new LocalTrace("op1").AnnotateWith(PredefinedTag.SqlQuery, "select * from ..."))
{
Thread.Sleep(70);
}
using (var trace = new LocalTrace("op2"))
{
Thread.Sleep(90);
trace.AnnotateWith(PredefinedTag.Error, "error message"); // mark it with an error
}
using (new LocalTrace("op3").TimeAnnotateWith(PredefinedTag.ServerSend))
{
Thread.Sleep(90);
}
}
}
Thread.Sleep(1000);
}
private static Task <bool> CompleteWithinSpawnedTask()
{
var local = new LocalTrace("childspan2");
var cur = TraceContextPropagation.CurrentSpan;
local.Span.Should().Be(cur);
return(Task.Run(new Func <bool>(() =>
{
// Thread.Sleep(20);
var cur2 = TraceContextPropagation.CurrentSpan;
cur2.Should().Be(local.Span);
local.Dispose();
cur2 = TraceContextPropagation.CurrentSpan;
// cur2.Should().Be(local.Span);
return true;
})));
}
public static string Generate(VersionTable <SiteHost> _versionTable, TimeSpan _warmUp, string _watchFolder, bool _isScanning, Exception _lastScanError)
{
var body = T.g("body");
var page = T.g("html")[
T.g("head")[
T.g("title")["Wrapper proxy test page"],
T.g("style")[".good {stroke: #0A0; } .bad {stroke: #A00; } path { stroke-width: 2.5px; fill: none; opacity: 0.5;}"]
],
body
];
body.Add(T.g("h1")["Status"]);
if (_warmUp.Ticks == 0)
{
body.Add(T.g("p")["The proxy is starting up. Versions will be listed below as they are ready."]);
}
else
{
body.Add(T.g("p")["Three flavours"]);
body.Add(T.g("p")["The proxy is active. Initial warm up took: " + _warmUp]);
}
body.Add(T.g("p")["Currently loaded: " + _versionTable.VersionsAvailable()]);
body.Add(T.g("p")["Watch folder: ", T.g("tt")[_watchFolder], " ", (_isScanning) ? ("Scan is in progress") : ("Scanner is idle")]);
// ReSharper disable once InconsistentlySynchronizedField
if (_lastScanError != null)
{
body.Add(T.g("p")["Last scan error: ", _lastScanError.ToString()]);
}
// run a health check against all versions and spit them out here...
body.Add(T.g("h1")["Health check"]);
var list = _versionTable.AllVersions().ToList();
foreach (var version in list)
{
var result = version.HostedSite.DirectCall(HealthRequest);
body.Add(T.g("h3")["Version " + version.VersionName]);
body.Add(T.g("p")[version.CallCount + " calls, " + (100 * version.SuccessRate).ToString("0.00") + "% successful"]);
body.Add(T.g("p")[result.StatusCode + " " + result.StatusMessage]);
if (result.Content != null)
{
body.Add(T.g("pre")[Encoding.UTF8.GetString(result.Content)]);
}
if (version.LastError != null)
{
body.Add(T.g("p")["Last proxy error: " + version.LastError]);
}
}
body.Add(T.g("h1")["Recent log entries"]);
// This double container lets us put the scroll-bar on the left. I just like it better that way :-)
body.Add(T.g("div", "style", "direction:rtl;overflow-y:scroll;height:40%;")[
T.g("pre", "style", "direction: ltr;")[LocalTrace.ReadAll()]
]);
// Some graphs
body.Add(T.g("h1")["Recent History"], T.g("p")["Logarithmic time scale. Left is last few seconds, right is last week."]);
foreach (var version in list)
{
body.Add(T.g("h3")["Version " + version.MajorVersion]);
body.Add(T.g("div")[RenderGraph(version.SuccessHistory, version.FailureHistory)]);
}
return(page.ToString());
}
