public void RegisterConcurrencyStrategy(IHystrixConcurrencyStrategy implementation)
{
if (!this.concurrencyStrategy.CompareAndSet(null, implementation))
{
throw new InvalidOperationException("Another strategy was alread registered.");
}
}
private static HystrixRequestCache GetInstance(RequestCacheKey rcKey, IHystrixConcurrencyStrategy concurrencyStrategy)
{
return(caches.GetOrAdd(rcKey, w =>
{
return new HystrixRequestCache(rcKey, concurrencyStrategy);
}));
}
public RequestCacheKey(IHystrixCollapserKey collapserKey, IHystrixConcurrencyStrategy concurrencyStrategy)
{
type = 2;
if (collapserKey == null)
{
this.key = null;
}
else
{
this.key = collapserKey.Name;
}
this.concurrencyStrategy = concurrencyStrategy;
}
public RequestCacheKey(HystrixCommandKey commandKey, IHystrixConcurrencyStrategy concurrencyStrategy)
{
type = 1;
if (commandKey == null)
{
this.key = null;
}
else
{
this.key = commandKey.Name;
}
this.concurrencyStrategy = concurrencyStrategy;
}
public RequestCacheKey(IHystrixCollapserKey collapserKey, IHystrixConcurrencyStrategy concurrencyStrategy)
{
type = 2;
if (collapserKey == null)
{
this.key = null;
}
else
{
this.key = collapserKey.Name;
}
this.concurrencyStrategy = concurrencyStrategy;
}
public RequestCacheKey(HystrixCommandKey commandKey, IHystrixConcurrencyStrategy concurrencyStrategy)
{
type = 1;
if (commandKey == null)
{
this.key = null;
}
else
{
this.key = commandKey.Name;
}
this.concurrencyStrategy = concurrencyStrategy;
}
public object Get(IHystrixConcurrencyStrategy concurrencyStrategy)
{
HystrixRequestVariableCacheKey key = new HystrixRequestVariableCacheKey(this, concurrencyStrategy);
IHystrixRequestVariable rvInstance = requestVariableInstance.GetOrAdd(key, w =>
{
if (requestVariableInstance.Count > 100)
{
logger.Warn("Over 100 instances of HystrixRequestVariable are being stored. This is likely the sign of a memory leak caused by using unique instances of HystrixConcurrencyStrategy instead of a single instance.");
}
return concurrencyStrategy.GetRequestVariable(lifeCycleMethods);
});
return rvInstance.Value;
}
public object Get(IHystrixConcurrencyStrategy concurrencyStrategy)
{
HystrixRequestVariableCacheKey key = new HystrixRequestVariableCacheKey(this, concurrencyStrategy);
IHystrixRequestVariable rvInstance = requestVariableInstance.GetOrAdd(key, w =>
{
if (requestVariableInstance.Count > 100)
{
logger.Warn("Over 100 instances of HystrixRequestVariable are being stored. This is likely the sign of a memory leak caused by using unique instances of HystrixConcurrencyStrategy instead of a single instance.");
}
return(concurrencyStrategy.GetRequestVariable(lifeCycleMethods));
});
return(rvInstance.Value);
}
public void RequestCache_Cache()
{
IHystrixConcurrencyStrategy strategy = HystrixConcurrencyStrategyDefault.Instance;
HystrixRequestContext context = HystrixRequestContext.InitializeContext();
try
{
HystrixRequestCache cache1 = HystrixRequestCache.GetInstance("command1", strategy);
cache1.PutIfAbsent("valueA", new TestFuture("a1"));
cache1.PutIfAbsent("valueA", new TestFuture("a2"));
cache1.PutIfAbsent("valueB", new TestFuture("b1"));
HystrixRequestCache cache2 = HystrixRequestCache.GetInstance("command2", strategy);
cache2.PutIfAbsent("valueA", new TestFuture("a3"));
Assert.AreEqual("a1", cache1.Get <string>("valueA").Get());
Assert.AreEqual("b1", cache1.Get <string>("valueB").Get());
Assert.AreEqual("a3", cache2.Get <string>("valueA").Get());
Assert.IsNull(cache2.Get <string>("valueB"));
}
catch (Exception e)
{
Assert.Fail("Exception: " + e.Message);
Console.WriteLine(e.ToString());
}
finally
{
context.Shutdown();
}
context = HystrixRequestContext.InitializeContext();
try
{
// with a new context the instance should have nothing in it
HystrixRequestCache cache = HystrixRequestCache.GetInstance("command1", strategy);
Assert.IsNull(cache.Get <string>("valueA"));
Assert.IsNull(cache.Get <string>("valueB"));
}
finally
{
context.Shutdown();
}
}
public void RequestCache_ClearCache()
{
IHystrixConcurrencyStrategy strategy = HystrixConcurrencyStrategyDefault.Instance;
HystrixRequestContext context = HystrixRequestContext.InitializeContext();
try
{
HystrixRequestCache cache1 = HystrixRequestCache.GetInstance("command1", strategy);
cache1.PutIfAbsent("valueA", new TestFuture("a1"));
Assert.AreEqual("a1", cache1.Get <string>("valueA").Get());
cache1.Clear("valueA");
Assert.IsNull(cache1.Get <string>("valueA"));
}
catch (Exception e)
{
Assert.Fail("Exception: " + e.Message);
Console.WriteLine(e.ToString());
}
finally
{
context.Shutdown();
}
}
public static HystrixRequestCache GetInstance(IHystrixCollapserKey key, IHystrixConcurrencyStrategy concurrencyStrategy)
{
return(GetInstance(new RequestCacheKey(key, concurrencyStrategy), concurrencyStrategy));
}
private HystrixRequestCache(RequestCacheKey rcKey, IHystrixConcurrencyStrategy concurrencyStrategy)
{
this.rcKey = rcKey;
this.concurrencyStrategy = concurrencyStrategy;
}
/**
* {@link HystrixRequestLog} for current request as defined by {@link HystrixRequestContext}.
*
* @return {@link HystrixRequestLog}
*/
public static HystrixRequestLog GetCurrentRequest(IHystrixConcurrencyStrategy concurrencyStrategy)
{
return currentRequestLog.Get(concurrencyStrategy);
}
/**
* {@link HystrixRequestLog} for current request as defined by {@link HystrixRequestContext}.
*
* @return {@link HystrixRequestLog}
*/
public static HystrixRequestLog GetCurrentRequest(IHystrixConcurrencyStrategy concurrencyStrategy)
{
return(currentRequestLog.Get(concurrencyStrategy));
}
public HystrixRequestVariableCacheKey(HystrixRequestVariableHolder rvHolder, IHystrixConcurrencyStrategy concurrencyStrategy)
{
this.rvHolder = rvHolder;
this.concurrencyStrategy = concurrencyStrategy;
}
public HystrixRequestVariableCacheKey(HystrixRequestVariableHolder rvHolder, IHystrixConcurrencyStrategy concurrencyStrategy)
{
this.rvHolder = rvHolder;
this.concurrencyStrategy = concurrencyStrategy;
}