public async Task It_logs_error_when_file_access_fails_during_runtime()
{
var errorCallbackInvoked = false;
var timer = new FakeTimer(ex =>
{
errorCallbackInvoked = true;
});
var fail = false;
var loader = new FakeLoader(() =>
{
if (fail)
{
throw new Exception("Simulated");
}
return(XDocument.Parse(@"<endpoints><endpoint name=""A""><instance/></endpoint></endpoints>"));
});
var monitor = new InstanceMappingFileMonitor(TimeSpan.Zero, timer, loader, new EndpointInstances());
await monitor.Start(null);
fail = true;
await timer.Trigger();
Assert.IsTrue(errorCallbackInvoked);
}
public async Task It_logs_error_when_file_access_fails_during_runtime()
{
var errorCallbackInvoked = false;
var timer = new FakeTimer(ex =>
{
errorCallbackInvoked = true;
});
var fail = false;
var fileAccess = new FakeFileAccess(() =>
{
// ReSharper disable once AccessToModifiedClosure
if (fail)
{
throw new Exception("Simulated");
}
return XDocument.Parse(@"<endpoints><endpoint name=""A""><instance/></endpoint></endpoints>");
});
var monitor = new InstanceMappingFileMonitor("unused", TimeSpan.Zero, timer, fileAccess, new EndpointInstances());
await monitor.PerformStartup(null);
fail = true;
await timer.Trigger();
Assert.IsTrue(errorCallbackInvoked);
}
public async Task It_logs_error_when_file_access_fails_during_runtime()
{
var errorCallbackInvoked = false;
var timer = new FakeTimer(ex =>
{
errorCallbackInvoked = true;
});
var fail = false;
var fileAccess = new FakeFileAccess(() =>
{
// ReSharper disable once AccessToModifiedClosure
if (fail)
{
throw new Exception("Simulated");
}
return(XDocument.Parse(@"<endpoints><endpoint name=""A""><instance/></endpoint></endpoints>"));
});
var monitor = new InstanceMappingFileMonitor("unused", TimeSpan.Zero, timer, fileAccess, new EndpointInstances());
await monitor.PerformStartup(null);
fail = true;
await timer.Trigger();
Assert.IsTrue(errorCallbackInvoked);
}
public void Should_log_added_endpoints()
{
var loader = new FakeLoader(() => XDocument.Parse(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""2"" /></endpoint></endpoints>"));
var monitor = new InstanceMappingFileMonitor(TimeSpan.Zero, new FakeTimer(), loader, new EndpointInstances());
monitor.ReloadData();
Assert.That(logOutput.ToString(), Does.Contain(@"Added endpoint 'A' with 2 instances"));
}
public void Should_log_added_endpoints()
{
var fileAccess = new FakeFileAccess(() => XDocument.Parse(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""2"" /></endpoint></endpoints>"));
var monitor = new InstanceMappingFileMonitor("filepath", TimeSpan.Zero, new FakeTimer(), fileAccess, new EndpointInstances());
monitor.ReloadData();
Assert.That(logOutput.ToString(), Does.Contain(@"Updating instance mapping table from 'filepath':
Added endpoint 'A' with 2 instances"));
}
public void Should_log_added_endpoints()
{
var fileAccess = new FakeFileAccess(() => XDocument.Parse(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""2"" /></endpoint></endpoints>"));
var monitor = new InstanceMappingFileMonitor("filepath", TimeSpan.Zero, new FakeTimer(), fileAccess, new EndpointInstances());
monitor.ReloadData();
Assert.That(logOutput.ToString(), Does.Contain(@"Updating instance mapping table from 'filepath':
Added endpoint 'A' with 2 instances"));
}
public void Reload_should_throw_when_file_does_not_exist()
{
var timer = new FakeTimer();
var fileAccessException = new Exception("Simulated");
var loader = new FakeLoader(() => throw fileAccessException);
var monitor = new InstanceMappingFileMonitor(TimeSpan.Zero, timer, loader, new EndpointInstances());
var exception = Assert.Throws <Exception>(() => monitor.ReloadData());
Assert.That(exception.Message, Does.Contain("An error occurred while reading the endpoint instance mapping (NServiceBus.Transport.Msmq.Tests.InstanceMappingFileMonitorTests+FakeLoader). See the inner exception for more details."));
Assert.That(exception.InnerException, Is.EqualTo(fileAccessException));
}
public void Should_log_removed_endpoints()
{
var fileData = new Queue <string>();
fileData.Enqueue(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""2"" /></endpoint></endpoints>");
fileData.Enqueue("<endpoints></endpoints>");
var loader = new FakeLoader(() => XDocument.Parse(fileData.Dequeue()));
var monitor = new InstanceMappingFileMonitor(TimeSpan.Zero, new FakeTimer(), loader, new EndpointInstances());
monitor.ReloadData();
logOutput.Clear();
monitor.ReloadData();
Assert.That(logOutput.ToString(), Does.Contain(@"Removed all instances of endpoint 'A'"));
}
public void Reload_should_throw_when_file_does_not_exist()
{
const string filePath = "some file path";
var timer = new FakeTimer();
var fileAccessException = new Exception("Simulated");
var fileAccess = new FakeFileAccess(() =>
{
throw fileAccessException;
});
var monitor = new InstanceMappingFileMonitor(filePath, TimeSpan.Zero, timer, fileAccess, new EndpointInstances());
var exception = Assert.Throws <Exception>(() => monitor.ReloadData());
Assert.That(exception.Message, Does.Contain($"An error occurred while reading the endpoint instance mapping file at {filePath}. See the inner exception for more details."));
Assert.That(exception.InnerException, Is.EqualTo(fileAccessException));
}
public void Should_log_changed_instances()
{
var fileData = new Queue <string>();
fileData.Enqueue(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""2"" /></endpoint></endpoints>");
fileData.Enqueue(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""3"" /><instance discriminator=""4"" /></endpoint></endpoints>");
var fileAccess = new FakeFileAccess(() => XDocument.Parse(fileData.Dequeue()));
var monitor = new InstanceMappingFileMonitor("filepath", TimeSpan.Zero, new FakeTimer(), fileAccess, new EndpointInstances());
monitor.ReloadData();
logOutput.Clear();
monitor.ReloadData();
Assert.That(logOutput.ToString(), Does.Contain(@"Updating instance mapping table from 'filepath':
Updated endpoint 'A': +2 instances, -1 instance"));
}
public void Reload_should_throw_when_file_does_not_exist()
{
const string filePath = "some file path";
var timer = new FakeTimer();
var fileAccessException = new Exception("Simulated");
var fileAccess = new FakeFileAccess(() =>
{
throw fileAccessException;
});
var monitor = new InstanceMappingFileMonitor(filePath, TimeSpan.Zero, timer, fileAccess, new EndpointInstances());
var exception = Assert.Throws<Exception>(() => monitor.ReloadData());
Assert.That(exception.Message, Does.Contain($"An error occurred while reading the endpoint instance mapping file at {filePath}. See the inner exception for more details."));
Assert.That(exception.InnerException, Is.EqualTo(fileAccessException));
}
protected internal override void Setup(FeatureConfigurationContext context)
{
var filePath = GetRootedPath(context.Settings.Get<string>(FilePathSettingsKey));
if (!File.Exists(filePath))
{
throw new Exception($"The specified instance mapping file '{filePath}' does not exist.");
}
var checkInterval = context.Settings.Get<TimeSpan>(CheckIntervalSettingsKey);
var endpointInstances = context.Settings.Get<EndpointInstances>();
var instanceMappingTable = new InstanceMappingFileMonitor(filePath, checkInterval, new AsyncTimer(), new InstanceMappingFileAccess(), endpointInstances);
instanceMappingTable.ReloadData();
context.RegisterStartupTask(instanceMappingTable);
}
protected internal override void Setup(FeatureConfigurationContext context)
{
var filePath = GetRootedPath(context.Settings.Get <string>(FilePathSettingsKey));
if (!File.Exists(filePath))
{
throw new Exception($"The specified instance mapping file '{filePath}' does not exist.");
}
var checkInterval = context.Settings.Get <TimeSpan>(CheckIntervalSettingsKey);
var endpointInstances = context.Settings.Get <EndpointInstances>();
var instanceMappingTable = new InstanceMappingFileMonitor(filePath, checkInterval, new AsyncTimer(), new InstanceMappingFileAccess(), endpointInstances);
instanceMappingTable.ReloadData();
context.RegisterStartupTask(instanceMappingTable);
}
public void Should_log_removed_endpoints()
{
var fileData = new Queue<string>();
fileData.Enqueue(@"<endpoints><endpoint name=""A""><instance discriminator=""1"" /><instance discriminator=""2"" /></endpoint></endpoints>");
fileData.Enqueue(@"<endpoints></endpoints>");
var fileAccess = new FakeFileAccess(() => XDocument.Parse(fileData.Dequeue()));
var monitor = new InstanceMappingFileMonitor("filepath", TimeSpan.Zero, new FakeTimer(), fileAccess, new EndpointInstances());
monitor.ReloadData();
logOutput.Clear();
monitor.ReloadData();
Assert.That(logOutput.ToString(), Does.Contain(@"Updating instance mapping table from 'filepath':
Removed all instances of endpoint 'A'"));
}
