public StandbyManagerE2ETestBase()
{
_testRootPath = Path.Combine(Path.GetTempPath(), "StandbyManagerTests");
CleanupTestDirectory();
StandbyManager.ResetChangeToken();
}
public SpecializationE2ETests()
{
StandbyManager.ResetChangeToken();
var settings = new Dictionary <string, string>()
{
{ EnvironmentSettingNames.AzureWebsitePlaceholderMode, "1" },
{ EnvironmentSettingNames.AzureWebsiteContainerReady, null },
};
_environment = new TestEnvironment(settings);
_loggerProvider = new TestLoggerProvider();
_pauseBeforeHostBuild = new SemaphoreSlim(1, 1);
_pauseAfterStandbyHostBuild = new SemaphoreSlim(1, 1);
_buildCount = new SemaphoreSlim(2, 2);
}
public async Task InvocationsContainDifferentOperationIds()
{
// Verify that when a request specializes the host we don't capture the context
// of that request. Application Insights uses this context to correlate telemetry
// so it had a confusing effect. Previously all TimerTrigger traces would have the
// operation id of this request and all host logs would as well.
// Start a host in standby mode.
StandbyManager.ResetChangeToken();
string standbyPath = Path.Combine(Path.GetTempPath(), "functions", "standby", "wwwroot");
string specializedScriptRoot = @"TestScripts\CSharp";
string scriptRootConfigPath = ConfigurationPath.Combine(ConfigurationSectionNames.WebHost, nameof(ScriptApplicationHostOptions.ScriptPath));
var settings = new Dictionary <string, string>()
{
{ EnvironmentSettingNames.AzureWebsitePlaceholderMode, "1" },
{ EnvironmentSettingNames.AzureWebsiteContainerReady, null },
};
var environment = new TestEnvironment(settings);
var loggerProvider = new TestLoggerProvider();
var channel = new TestTelemetryChannel();
var builder = Program.CreateWebHostBuilder()
.ConfigureLogging(b =>
{
b.AddProvider(loggerProvider);
})
.ConfigureAppConfiguration(c =>
{
c.AddInMemoryCollection(new Dictionary <string, string>
{
{ scriptRootConfigPath, specializedScriptRoot }
});
})
.ConfigureServices((bc, s) =>
{
s.AddSingleton <IEnvironment>(environment);
// Ensure that we don't have a race between the timer and the
// request for triggering specialization.
s.AddSingleton <IStandbyManager, InfiniteTimerStandbyManager>();
})
.AddScriptHostBuilder(webJobsBuilder =>
{
webJobsBuilder.Services.AddSingleton <ITelemetryChannel>(_ => channel);
webJobsBuilder.Services.Configure <FunctionResultAggregatorOptions>(o =>
{
o.IsEnabled = false;
});
webJobsBuilder.Services.PostConfigure <ApplicationInsightsLoggerOptions>(o =>
{
o.SamplingSettings = null;
});
webJobsBuilder.Services.PostConfigure <ScriptJobHostOptions>(o =>
{
// Only load the function we care about, but not during standby
if (o.RootScriptPath != standbyPath)
{
o.Functions = new[]
{
"OneSecondTimer",
"FunctionExecutionContext"
};
}
});
})
.ConfigureScriptHostAppConfiguration(c =>
{
c.AddInMemoryCollection(new Dictionary <string, string>
{
[EnvironmentSettingNames.AppInsightsInstrumentationKey] = "some_key"
});
});
using (var testServer = new TestServer(builder))
{
var client = testServer.CreateClient();
HttpResponseMessage response = await client.GetAsync("api/warmup");
Assert.True(response.IsSuccessStatusCode, loggerProvider.GetLog());
// Now that standby mode is warmed up, set the specialization properties...
environment.SetEnvironmentVariable(EnvironmentSettingNames.AzureWebsiteContainerReady, "1");
environment.SetEnvironmentVariable(EnvironmentSettingNames.AzureWebsitePlaceholderMode, "0");
// ...and issue a request which will force specialization.
response = await client.GetAsync("api/functionexecutioncontext");
Assert.True(response.IsSuccessStatusCode, loggerProvider.GetLog());
// Wait until we have a few logs from the timer trigger.
IEnumerable <TraceTelemetry> timerLogs = null;
await TestHelpers.Await(() =>
{
timerLogs = channel.Telemetries
.OfType <TraceTelemetry>()
.Where(p => p.Message == "OneSecondTimer fired!");
return(timerLogs.Count() >= 3);
});
var startupRequest = channel.Telemetries
.OfType <RequestTelemetry>()
.Where(p => p.Name == "FunctionExecutionContext")
.Single();
// Make sure that auto-Http tracking worked with this request.
Assert.Equal("200", startupRequest.ResponseCode);
// The host logs should not be associated with this request.
var logsWithRequestId = channel.Telemetries
.OfType <TraceTelemetry>()
.Select(p => p.Context.Operation.Id)
.Where(p => p == startupRequest.Context.Operation.Id);
// Just expect the "Executing" and "Executed" logs from the actual request.
Assert.Equal(2, logsWithRequestId.Count());
// And each of the timer invocations should have a different operation id, and none
// should match the request id.
var distinctOpIds = timerLogs.Select(p => p.Context.Operation.Id).Distinct();
Assert.Equal(timerLogs.Count(), distinctOpIds.Count());
Assert.Empty(timerLogs.Where(p => p.Context.Operation.Id == startupRequest.Context.Operation.Id));
}
}
public async Task IsPlaceholderMode_ThroughoutInitialization_EvaluatesCorrectly()
{
StandbyManager.ResetChangeToken();
string standbyPath = Path.Combine(Path.GetTempPath(), "functions", "standby", "wwwroot");
string specializedScriptRoot = @"TestScripts\CSharp";
string scriptRootConfigPath = ConfigurationPath.Combine(ConfigurationSectionNames.WebHost, nameof(ScriptApplicationHostOptions.ScriptPath));
var settings = new Dictionary <string, string>()
{
{ EnvironmentSettingNames.AzureWebsitePlaceholderMode, "1" },
{ EnvironmentSettingNames.AzureWebsiteContainerReady, null },
};
var environment = new TestEnvironment(settings);
var loggerProvider = new TestLoggerProvider();
var builder = Program.CreateWebHostBuilder()
.ConfigureLogging(b =>
{
b.AddProvider(loggerProvider);
})
.ConfigureAppConfiguration(c =>
{
c.AddInMemoryCollection(new Dictionary <string, string>
{
{ scriptRootConfigPath, specializedScriptRoot }
});
})
.ConfigureServices((bc, s) =>
{
s.AddSingleton <IEnvironment>(environment);
// Simulate the environment becoming specialized after these options have been
// initialized with standby paths.
s.AddOptions <ScriptApplicationHostOptions>()
.PostConfigure <IEnvironment>((o, e) =>
{
Specialize(e);
});
})
.AddScriptHostBuilder(webJobsBuilder =>
{
webJobsBuilder.Services.PostConfigure <ScriptJobHostOptions>(o =>
{
// Only load the function we care about, but not during standby
if (o.RootScriptPath != standbyPath)
{
o.Functions = new[]
{
"HttpTrigger-Dynamic"
};
}
});
});
var server = new TestServer(builder);
var client = server.CreateClient();
// Force the specialization middleware to run
HttpResponseMessage response = await InvokeFunction(client);
response.EnsureSuccessStatusCode();
string log = loggerProvider.GetLog();
Assert.Contains("Creating StandbyMode placeholder function directory", log);
Assert.Contains("Starting host specialization", log);
// Make sure this was registered.
var hostedServices = server.Host.Services.GetServices <IHostedService>();
Assert.Contains(hostedServices, p => p is StandbyInitializationService);
}