public static void AddHystrixCommand <TService>(this IServiceCollection services, IHystrixCommandGroupKey groupKey, IConfiguration config)
where TService : class
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (groupKey == null)
{
throw new ArgumentNullException(nameof(groupKey));
}
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
var strategy = HystrixPlugins.OptionsStrategy;
var dynOpts = strategy.GetDynamicOptions(config);
var threadPoolKey = HystrixThreadPoolKeyDefault.AsKey(groupKey.Name);
var commandKey = HystrixCommandKeyDefault.AsKey(typeof(TService).Name);
IHystrixCommandOptions opts = new HystrixCommandOptions(commandKey, null, dynOpts)
{
GroupKey = groupKey,
ThreadPoolKey = threadPoolKey
};
opts.ThreadPoolOptions = new HystrixThreadPoolOptions(threadPoolKey, null, dynOpts);
services.AddTransient <TService>((p) => (TService)ActivatorUtilities.CreateInstance(p, typeof(TService), opts));
}
public static HystrixCommandMetrics GetInstance(IHystrixCommandKey key, IHystrixCommandGroupKey commandGroup, IHystrixThreadPoolKey threadPoolKey, IHystrixCommandOptions properties)
{
// attempt to retrieve from cache first
IHystrixThreadPoolKey nonNullThreadPoolKey;
if (threadPoolKey == null)
{
nonNullThreadPoolKey = HystrixThreadPoolKeyDefault.AsKey(commandGroup.Name);
}
else
{
nonNullThreadPoolKey = threadPoolKey;
}
return(Metrics.GetOrAddEx(key.Name, (k) => new HystrixCommandMetrics(key, commandGroup, nonNullThreadPoolKey, properties, HystrixPlugins.EventNotifier)));
}
