static async Task Main(string[] args)
{
var sp = ConfigureServices();
CircuitBreakerLog.Init(sp.GetRequiredService <ILoggerFactory>());
var cb = sp.GetService <ICircuitBreaker>();
var input = new CircuitRequest
{
CircuitKey = "api-books",
RequestId = Guid.NewGuid().ToString(),
// Retry = 1,
// Timeout = TimeSpan.FromMilliseconds(50)
};
input.Context.SetAppName("web-bookworm");
input.Context.SetServiceName("api-search");
await Execute(cb, input);
var ts = Stopwatch.StartNew();
for (var i = 0; i < 500; i++)
{
await Execute(cb, input);
}
ts.Stop();
Console.WriteLine($"Total:{ts.ElapsedMilliseconds}ms");
Console.ReadLine();
}
protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
var key = GetPropertyValue <string>(request, PropertyNames.CircuitKey);
var requestId = GetPropertyValue <string>(request, PropertyNames.RequestId);
var appName = GetPropertyValue <string>(request, PropertyNames.AppName);
var serviceName = GetPropertyValue <string>(request, PropertyNames.ServiceName);
if (string.IsNullOrWhiteSpace(key))
{
key = request.RequestUri.Host;
}
var circuitRequest = new CircuitRequest
{
CircuitKey = key,
RequestId = requestId,
Retry = 0,
Timeout = TimeSpan.Zero
};
circuitRequest.Context.SetAppName(appName);
circuitRequest.Context.SetServiceName(serviceName);
var cr = await _circuitBreaker.ExecuteAsync <HttpResponseMessage>(circuitRequest, async (cx) =>
{
var response = await base.SendAsync(request, cancellationToken);
if (response.IsSuccessStatusCode)
{
return(response);
}
if (response.StatusCode == System.Net.HttpStatusCode.InternalServerError ||
response.StatusCode == System.Net.HttpStatusCode.GatewayTimeout ||
response.StatusCode == System.Net.HttpStatusCode.ServiceUnavailable ||
response.StatusCode == System.Net.HttpStatusCode.BadGateway)
{
response.Dispose();
throw new Exception($"Response failed with status code {response.StatusCode}");
}
if (response.StatusCode == System.Net.HttpStatusCode.RequestTimeout)
{
response.Dispose();
throw new TimeoutException("Raising timeout to break circuit");
}
return(response);
});
return(cr.Value);
//HttpRequestLog.Info($"HttpRequest starting | Url: {request.RequestUri} | Method: {request.Method}");
//var sw = Stopwatch.StartNew();
//var response = await base.SendAsync(request, cancellationToken);
//sw.Stop();
//HttpRequestLog.Info($"HttpRequest completed | StatusCode: {response.StatusCode} | Url : {request.RequestUri} | Method: {request.Method} | TimeTaken: {sw.ElapsedMilliseconds}ms");
//return response;
}
