public HttpNamedService(IHttpClientFactory httpClientFactory, ILogger <HttpNamedService> logger)
{
this.httpClientFactory = httpClientFactory;
this.logger = logger;
this.httpClient = httpClientFactory.CreateClient("transientpolicy");
policy1 = NamedHttpClientBasedPolicy.CreateCircuitBreakerPolicy(durationOfTheBreak: TimeSpan.FromSeconds(30));
policy2 = NamedHttpClientBasedPolicy.CreateCircuitBreakerPolicy(durationOfTheBreak: TimeSpan.FromSeconds(30));
}
public static IServiceCollection AddHttpNamedBasedDependencies(this IServiceCollection services)
{
services.AddSingleton <PollyExceptionHandler>();
services.AddSingleton <NamedHttpMessageHandler>();
services.AddSingleton <IHttpService, HttpNamedService>();
var retryableCode = new List <HttpStatusCode>()
{
HttpStatusCode.InternalServerError
};
//network failures, 5xx and 408 responses
services.AddHttpClient("transientpolicy")
.AddHttpMessageHandler <NamedHttpMessageHandler>()
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateTimeoutPolicy(TimeSpan.FromSeconds(5)))
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateWaitAndRetryPolicy())
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateTimeoutPolicy(TimeSpan.FromSeconds(1)))
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateCircuitBreakerPolicy(durationOfTheBreak: TimeSpan.FromSeconds(30)));
//network failures, 5xx and 408 responses
services.AddHttpClient(RetryableConstants.PollyBasedNamedHttpClient)
//.AddHttpMessageHandler<NamedHttpMessageHandler>()
.AddHttpMessageHandler <PollyExceptionHandler>()
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateTimeoutPolicy(TimeSpan.FromSeconds(10)))
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateWaitAndRetryPolicy(retryableCode, 3))
.AddPolicyHandler(NamedHttpClientBasedPolicy.CreateTimeoutPolicy(TimeSpan.FromSeconds(1)));
/*
* //AddPolicyHandler: you define what and how to handle
* services.AddHttpClient("conditionalpolicy")
* .AddHttpMessageHandler<TimingHandler>()
* .AddPolicyHandler(HttpPolicyUtils.PolicyWithExceptionAndRetry())
* .AddPolicyHandler(HttpPolicyUtils.GetCircuitBreakerPolicyFromExtension())
* .AddPolicyHandler(HttpPolicyUtils.TimeoutPolicy());
*
* services.AddHttpClient("selectPolicy")
* .AddHttpMessageHandler<TimingHandler>()
* .AddPolicyHandler(request => request.Method == HttpMethod.Get ? HttpPolicyUtils.PolicyWithExceptionAndRetry() : HttpPolicyUtils.NoOperationPolicy());
*/
return(services);
}
