public void CacheWithVersionChangeEvent()
{
Config config = ObjectTestHelper.GetConfigWithCaching();
ObjectMetadataStore metadata = new ObjectMetadataStore(config);
ObjectVersionStore versions = new ObjectVersionStore(config, metadata);
ObjectIndexerCache cache = new ObjectIndexerCache(metadata, versions);
string objectName = "TestObj";
string intVal1 = ObjectIndex.Create("IntIdx", 5).ToString();
string strVal1 = ObjectIndex.Create("StrIdx", "Val1").ToString();
string strVal2 = ObjectIndex.Create("StrIdx", "Val3").ToString();
object[] cacheParams = new object[] { objectName, intVal1, strVal1 };
object[] cacheParams2 = new object[] { objectName, intVal1, strVal2 };
int[] objectIds = new int[] { 1000, 2000 };
int[] objectIds2 = new int[] { 3000, 4000 };
try
{
// add a couple items to cache - they should not be returned
// once the object's version changes (they become "dirty")
cache.Set(objectIds, cacheParams);
cache.Set(objectIds2, cacheParams2);
Assert.AreEqual(2, cache.EnumerateCache().Count());
CacheTotals totals = cache.Totals;
Assert.AreEqual(2, totals.TotalQueries);
Assert.AreEqual(4, totals.TotalValues);
Assert.IsNotNull(cache.Get(cacheParams));
Assert.IsNotNull(cache.Get(cacheParams2));
versions.Update(objectName);
// NOTE: Dirty cache entries are not removed from cache as soon as
// they become dirty. They are removed lazily when Get/Set
// are called.
// CacheTotals and Enumerate will return Dirty objects and are
// only meant to be used by the Cache Cleaner and not directly
// by the Object Indexer.
Assert.AreEqual(2, cache.EnumerateCache().Count());
totals = cache.Totals;
Assert.AreEqual(2, totals.TotalQueries);
Assert.AreEqual(4, totals.TotalValues);
// Since the object is dirty, these should return null.
Assert.IsNull(cache.Get(cacheParams));
Assert.IsNull(cache.Get(cacheParams2));
// Reset the cache values and they should be returned again.
cache.Set(objectIds, cacheParams);
cache.Set(objectIds2, cacheParams2);
Assert.AreEqual(2, cache.EnumerateCache().Count());
totals = cache.Totals;
Assert.AreEqual(2, totals.TotalQueries);
Assert.AreEqual(4, totals.TotalValues);
Assert.IsNotNull(cache.Get(cacheParams));
Assert.IsNotNull(cache.Get(cacheParams2));
}
finally
{
cache.Dispose();
versions.Dispose();
metadata.Dispose();
}
}
public void CreateAndModifySameObjectMultithreaded()
{
Config config = ObjectTestHelper.GetConfigWithCaching();
ObjectMetadataStore metadata = new ObjectMetadataStore(config);
ObjectVersionStore versions = new ObjectVersionStore(config, metadata);
ObjectIndexerCache cache = new ObjectIndexerCache(metadata, versions);
string objectName = "TestObj";
string intVal1 = ObjectIndex.Create("IntIdx", 5).ToString();
string strVal1 = ObjectIndex.Create("StrIdx", "Val1").ToString();
object[] cacheParams = new object[] { objectName, intVal1, strVal1 };
int[] objectIds = new int[] { 1000, 2000 };
int nullGetCount = 0;
try
{
// Create a couple of threads that Get and Set a cache item.
// A third thread periodically expires the Object by changing its version.
List<Action> actions = new List<Action>();
for (int i = 0; i < 2; i++)
{
actions.Add(new Action(() =>
{
int localNullGetCount = 0;
for (int loops = 0; loops < 40; loops++)
{
for (int tryGet = 0; tryGet < 100; tryGet++)
{
int[] getObjectIds = cache.Get(cacheParams);
if (null == getObjectIds)
{
cache.Set(objectIds, cacheParams);
++localNullGetCount;
}
else
{
Assert.AreEqual(objectIds[0], getObjectIds[0]);
Assert.AreEqual(objectIds[1], getObjectIds[1]);
}
}
Thread.Sleep(100);
}
lock (objectIds)
{
nullGetCount += localNullGetCount;
}
}));
}
actions.Add(new Action(() =>
{
for (int loops = 0; loops < 40; loops++)
{
versions.Update(objectName);
Thread.Sleep(100);
}
}));
Parallel.Invoke(actions.ToArray());
Assert.IsTrue(nullGetCount > 2);
}
finally
{
cache.Dispose();
versions.Dispose();
metadata.Dispose();
}
}
public void CacheWithDependencyVersionChangeEvent()
{
Config config = ObjectTestHelper.GetConfigWithCaching();
string ns = ObjectTestHelper.NameSpace1;
string obj = ObjectTestHelper.ObjectName1;
string obj2 = ObjectTestHelper.ObjectName2;
string objectFullName = ObjectNaming.CreateFullObjectName(ns, obj);
string objectFullName2 = ObjectNaming.CreateFullObjectName(ns, obj2);
ObjectMetadata objectMetadata = new ObjectMetadata(ns, obj,
new ObjectIndexMetadata[]
{
new ObjectIndexMetadata("IntIndex1", ObjectIndexType.Integer),
new ObjectIndexMetadata("StrIndex1", ObjectIndexType.String, 15)
});
ObjectMetadata objectMetadata2 = new ObjectMetadata(ns, obj2, null,
new string[] { obj }); // Make Object1 a dependency of Object2.
// Now whenever Object2's version changes, Object1's change event will fire as well.
// NOTE: Do not supply Full Object Name as objects can only depend on other objects
// within their namespace.
// Temporarily use the ObjectService to provision the Object's Metadata.
using (var svc = new ObjectService(config))
{
svc.CreateNameSpace(new ObjectNameSpaceConfig(ns,
"ZeroG Test", "Unit Test", DateTime.Now));
svc.ProvisionObjectStore(objectMetadata);
svc.ProvisionObjectStore(objectMetadata2);
}
ObjectMetadataStore metadata = new ObjectMetadataStore(config);
ObjectVersionStore versions = new ObjectVersionStore(config, metadata);
ObjectIndexerCache cache = new ObjectIndexerCache(metadata, versions);
string intVal1 = ObjectIndex.Create("IntIdx", 5).ToString();
string strVal1 = ObjectIndex.Create("StrIdx", "Val1").ToString();
string strVal2 = ObjectIndex.Create("StrIdx", "Val3").ToString();
object[] cacheParams = new object[] { objectFullName, intVal1, strVal1 };
object[] cacheParams2 = new object[] { objectFullName, intVal1, strVal2 };
int[] objectIds = new int[] { 1000, 2000 };
int[] objectIds2 = new int[] { 3000, 4000 };
try
{
// add a couple items to cache - they should not be returned
// once the objects dependency object version changes
cache.Set(objectIds, cacheParams);
cache.Set(objectIds2, cacheParams2);
Assert.AreEqual(2, cache.EnumerateCache().Count());
CacheTotals totals = cache.Totals;
Assert.AreEqual(2, totals.TotalQueries);
Assert.AreEqual(4, totals.TotalValues);
Assert.IsNotNull(cache.Get(cacheParams));
Assert.IsNotNull(cache.Get(cacheParams2));
versions.Update(objectFullName2);
Assert.AreEqual(2, cache.EnumerateCache().Count());
totals = cache.Totals;
Assert.AreEqual(2, totals.TotalQueries);
Assert.AreEqual(4, totals.TotalValues);
Assert.IsNull(cache.Get(cacheParams));
Assert.IsNull(cache.Get(cacheParams2));
cache.Set(objectIds, cacheParams);
cache.Set(objectIds2, cacheParams2);
Assert.AreEqual(2, cache.EnumerateCache().Count());
totals = cache.Totals;
Assert.AreEqual(2, totals.TotalQueries);
Assert.AreEqual(4, totals.TotalValues);
Assert.IsNotNull(cache.Get(cacheParams));
Assert.IsNotNull(cache.Get(cacheParams2));
}
finally
{
cache.Dispose();
versions.Dispose();
metadata.Dispose();
}
}