public Task <OpResponse> GetResponse <M>(long id, int?freshnessSeconds = null) where M : class
{
var req = RequestOp.GetOp <M>(
id,
NowMs,
freshnessSeconds ?? Config.DefaultFreshnessSeconds
);
return(ProcessRequest(req));
}
public async Task ReadWithModelCachesMultitest()
{
var thingModelStore1 = new ModelClassCache <Parent, long>();
var cache1 = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), thingModelStore1 }
});
var thingModelStore2 = new ModelClassCache <Parent, long>();
var cache2 = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), thingModelStore2 }
});
// read from origin
var cascade = new CascadeDataLayer(origin, new ICascadeCache[] { cache1, cache2 }, new CascadeConfig()
{
DefaultFreshnessSeconds = 1
});
var thing1 = await cascade.Get <Parent>(5);
Assert.AreEqual(5, thing1 !.id);
Assert.AreEqual(cascade.NowMs, thing1.updatedAtMs);
// should also be in both caches
var store1ThingResponse = await thingModelStore1.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual((store1ThingResponse.Result as Parent) !.id, 5);
Assert.AreEqual(cascade.NowMs, (store1ThingResponse.Result as Parent) !.updatedAtMs);
var store2ThingResponse = await thingModelStore2.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual((store2ThingResponse.Result as Parent) !.id, 5);
Assert.AreEqual(cascade.NowMs, (store2ThingResponse.Result as Parent) !.updatedAtMs);
origin.IncNowMs();
// freshness=5 allows for cached version
var thing2 = (await cascade.Get <Parent>(5, freshnessSeconds: 5)) !;
Assert.AreEqual(thing1.updatedAtMs, thing2.updatedAtMs);
// freshness=0 doesn't allow for cached version
var thing3 = (await cascade.Get <Parent>(5, freshnessSeconds: 0)) !;
Assert.AreEqual(origin.NowMs, thing3.updatedAtMs);
// caches should also be updated
store1ThingResponse = await thingModelStore1.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual(origin.NowMs, (store1ThingResponse.Result as Parent) !.updatedAtMs);
store2ThingResponse = await thingModelStore2.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual(origin.NowMs, (store2ThingResponse.Result as Parent) !.updatedAtMs);
origin.IncNowMs(2000);
// freshness=2 should allow for cached version
var thing4 = (await cascade.Get <Parent>(5, freshnessSeconds: 2)) !;
Assert.AreEqual(thing3.updatedAtMs, thing4.updatedAtMs);
// freshness=1 should get fresh version
var thing5 = (await cascade.Get <Parent>(5, freshnessSeconds: 1)) !;
Assert.AreEqual(origin.NowMs, thing5.updatedAtMs);
origin.IncNowMs(1000);
// clear cache1, freshnessSeconds=1 should return value from cache2 and update cache1
await cache1.Clear();
var thing6 = (await cascade.Get <Parent>(thing4.id, freshnessSeconds: 1)) !; // should get cache2 version
Assert.AreEqual(thing6.updatedAtMs, thing5.updatedAtMs);
store1ThingResponse = await thingModelStore1.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual(thing6.updatedAtMs, (store1ThingResponse.Result as Parent) !.updatedAtMs);
}
public async Task TestMetadata()
{
var path = System.IO.Path.GetTempFileName();
var conn = new SQLite.SQLiteAsyncConnection(path);
var db = new TestDatabase(conn);
await db.Reset();
var sqliteThingCache = new SqliteClassCache <Parent, long>(db);
await sqliteThingCache.Setup();
var sqliteGadgetCache = new SqliteClassCache <Child, string>(db);
await sqliteGadgetCache.Setup();
var cache1 = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), sqliteThingCache },
{ typeof(Child), sqliteGadgetCache }
});
// read from origin
var cascade = new CascadeDataLayer(origin, new ICascadeCache[] { cache1 }, new CascadeConfig()
{
DefaultFreshnessSeconds = 1
});
var thing5 = new Parent()
{
id = 5,
colour = "red"
};
var thing5ArrivedAt = cascade.NowMs;
await sqliteThingCache.Store(thing5.id, thing5, thing5ArrivedAt);
origin.IncNowMs();
var gadget6 = new Child()
{
id = "abc",
weight = 2.5,
power = 9.2
};
var gadget6ArrivedAt = cascade.NowMs;
await sqliteGadgetCache.Store(gadget6.id, gadget6, gadget6ArrivedAt);
origin.IncNowMs();
var opResponse = await sqliteThingCache.Fetch(RequestOp.GetOp <Parent>(thing5.id, cascade.NowMs));
var loaded5 = (opResponse.Result as Parent) !;
Assert.AreEqual(thing5ArrivedAt, opResponse.ArrivedAtMs);
Assert.AreEqual(thing5.colour, loaded5.colour);
opResponse = await sqliteGadgetCache.Fetch(RequestOp.GetOp <Child>(gadget6.id, cascade.NowMs));
var loaded6 = (opResponse.Result as Child) !;
Assert.AreEqual(gadget6ArrivedAt, opResponse.ArrivedAtMs);
Assert.AreEqual(gadget6.weight, loaded6.weight);
await sqliteGadgetCache.Clear();
// thing unaffected
opResponse = await sqliteThingCache.Fetch(RequestOp.GetOp <Parent>(thing5.id, cascade.NowMs));
Assert.NotNull(opResponse.Result);
Assert.AreEqual(thing5ArrivedAt, opResponse.ArrivedAtMs);
// gadget cleared including metadata
opResponse = await sqliteGadgetCache.Fetch(RequestOp.GetOp <Child>(gadget6.id, cascade.NowMs));
Assert.IsNull(opResponse.Result);
Assert.IsNull(opResponse.ArrivedAtMs);
var meta6 = await db.Get <CascadeModelMeta>(CascadeModelMeta.GenerateId <Child>(6));
Assert.IsNull(meta6);
}
