|
using System;
using JetBrains.Annotations;
namespace Kaleida.ServiceMonitor.Model.Runtime
{
public class MonitorState
{
[CanBeNull] private ScriptCompilation scriptCompilation;
private bool isMonitoring;
private int operationErrorCount;
[CanBeNull]private OperationError firstOperationError;
[CanBeNull]
private OperationError latestOperationError;
private readonly IStatePresentation statePresentation;
public MonitorState()
{
statePresentation = new DefaultStatePresentation(this);
}
internal event EventHandler MonitorStarted;
internal event EventHandler MonitorStopped;
public IStatePresentation DefaultPresentation
{
get { return statePresentation; }
}
public int OperationErrorCount
{
get { return operationErrorCount; }
}
public bool IsMonitoring
{
get { return isMonitoring; }
}
public bool CanBeginMonitoring
{
get { return !isMonitoring && HasSuccessfullyCompiledScript; }
}
public bool HasScriptError
{
get { return scriptCompilation != null && !scriptCompilation.Succeeded; }
}
public bool HasSuccessfullyCompiledScript
{
get { return scriptCompilation != null && scriptCompilation.Succeeded; }
}
public bool HasOperationFailures
{
get { return operationErrorCount != 0; }
}
[CanBeNull]
public ScriptCompilation ScriptCompilation
{
get { return scriptCompilation; }
}
public OperationError FirstOperationError
{
get { return firstOperationError; }
}
public OperationError LatestOperationError
{
get { return latestOperationError; }
}
internal void FlagError(OperationError error)
{
if (firstOperationError == null)
firstOperationError = error;
latestOperationError = error;
operationErrorCount++;
}
public void ClearErrors()
{
operationErrorCount = 0;
firstOperationError = null;
latestOperationError = null;
}
public void ScriptCompiled(ScriptCompilation compilation)
{
isMonitoring = isMonitoring && compilation.Succeeded;
scriptCompilation = compilation;
}
public void StartMonitoring()
{
if(!CanBeginMonitoring)
throw new InvalidOperationException("Monitor is not in a suitable state to start");
isMonitoring = true;
if (MonitorStarted != null)
MonitorStarted(this, EventArgs.Empty);
}
public void StopMonitoring()
{
if (!IsMonitoring)
throw new InvalidOperationException("Monitor is already started");
isMonitoring = false;
if (MonitorStopped != null)
MonitorStopped(this, EventArgs.Empty);
}
}
}
|
By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.
If a file you wish to view isn't highlighted, and is a text file (not binary), please
let us know and we'll add colourisation support for it.
Stuart Wheelwright is the Principal Architect and Software Developer at
BlackJet Software Ltd.
He has over 16 years commercial experience producing robust, maintainable, web-based solutions and bespoke systems for Microsoft platforms.
His latest project is
Shopping UK, an elegantly simple shopping list for iPhone.