internal DefaultCircuitBreaker(CommandProperties properties, CommandMetrics metrics, IClock clock)
{
Contract.Requires(clock != null);
Contract.Requires(properties != null);
Contract.Requires(metrics != null);
_clock = clock;
_properties = properties;
_metrics = metrics;
}
internal static ICircuitBreaker GetOrCreateInstance(string name, CommandProperties properties, CommandMetrics metrics, IClock clock)
{
Contract.Assert(!String.IsNullOrEmpty(name));
Contract.Assert(properties != null);
Contract.Assert(metrics != null);
Contract.Assert(clock != null);
return _metrics.GetOrAdd(name, n => new DefaultCircuitBreaker(properties, metrics, clock));
}
private IMetricsPublisherCommand GetOrCreatePublisherForCommand(string commandName, CommandMetrics metrics, ICircuitBreaker circuitBreaker, CommandProperties properties)
{
// attempt to retrieve from cache first
IMetricsPublisherCommand publisher;
if (_commandPublishers.TryGetValue(commandName, out publisher))
{
return publisher;
}
// it doesn't exist so we need to create it
IMetricsPublisherCommandFactory factory;
if (!_commandPublisherFactories.TryGetValue(commandName, out factory))
return null;
// attempt to store it (race other threads)
return _commandPublishers.GetOrAdd(commandName, factory.Create(commandName, metrics, circuitBreaker, properties));
}
public static IMetricsPublisherCommand CreateOrRetrievePublisherForCommand(string commandName, CommandMetrics metrics, ICircuitBreaker circuitBreaker, CommandProperties properties)
{
return MetricsPublisherFactory.Instance.GetOrCreatePublisherForCommand(commandName, metrics, circuitBreaker, properties);
}
public CommandMetricsEntry(string name, CommandMetrics metrics)
{
CommandName = name;
Metrics = metrics;
}