public async Task When_PerformNeededSyncs_Fails_Should_Release_Lock(string lockToTake)
{
var devAddrcache = new LoRaDevAddrCache(this.cache, null, null);
await LockDevAddrHelper.PrepareLocksForTests(this.cache, lockToTake == null?null : new[] { lockToTake });
var managerInput = new List <DevAddrCacheInfo> {
new DevAddrCacheInfo()
{
DevEUI = TestEui.GenerateDevEui(), DevAddr = CreateDevAddr()
}
};
var registryManagerMock = InitRegistryManager(managerInput);
registryManagerMock.Setup(x => x.CreateQuery(It.IsAny <string>())).Throws(new RedisException(string.Empty));
await devAddrcache.PerformNeededSyncs(registryManagerMock.Object);
// When doing a full update, the FullUpdateKey lock should be reset to 1min, the GlobalDevAddrUpdateKey should be gone
// When doing a partial update, the GlobalDevAddrUpdateKey should be gone
switch (lockToTake)
{
case FullUpdateKey:
Assert.Null(await this.cache.GetObjectTTL(GlobalDevAddrUpdateKey));
break;
case null:
var nextFullUpdate = await this.cache.GetObjectTTL(FullUpdateKey);
Assert.True(nextFullUpdate <= TimeSpan.FromMinutes(1));
Assert.Null(await this.cache.GetObjectTTL(GlobalDevAddrUpdateKey));
break;
default: throw new InvalidOperationException("invalid test case");
}
}
public async Task When_PerformNeededSyncs_Fails_Should_Release_Lock(params string[] lockToTake)
{
var devAddrcache = new LoRaDevAddrCache(this.cache, null, null);
await LockDevAddrHelper.PrepareLocksForTests(this.cache, null, lockToTake);
List <DevAddrCacheInfo> managerInput = new List <DevAddrCacheInfo>();
for (int i = 0; i < 2; i++)
{
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = NewUniqueEUI64(),
DevAddr = NewUniqueEUI32()
});
}
var registryManagerMock = this.InitRegistryManager(managerInput);
registryManagerMock.Setup(x => x.CreateQuery(It.IsAny <string>())).Throws <Exception>();
await devAddrcache.PerformNeededSyncs(registryManagerMock.Object);
Assert.Null(this.cache.GetObject <DevAddrCacheInfo>(GlobalDevAddrUpdateKey));
var nextFullUpdate = await this.cache.GetObjectTTL(FullUpdateKey);
if (lockToTake[0] == DeltaUpdateKey)
{
Assert.True(nextFullUpdate < TimeSpan.FromMinutes(1));
}
}
private static void InitCache(ILoRaDeviceCacheStore cache, List <DevAddrCacheInfo> deviceIds)
{
var loradevaddrcache = new LoRaDevAddrCache(cache, null, null);
foreach (var device in deviceIds)
{
loradevaddrcache.StoreInfo(device);
}
}
// This test simulate a call received by multiple server. It ensures IoT Hub is only queried once.
public async Task Multi_Gateway_When_DevAddr_Is_Not_In_Cache_Query_Iot_Hub_Only_Once_And_Save_In_Cache()
{
var gateway1 = NewUniqueEUI64();
var gateway2 = NewUniqueEUI64();
var dateTime = DateTime.UtcNow;
var managerInput = new List <DevAddrCacheInfo>();
for (var i = 0; i < 2; i++)
{
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = TestEui.GenerateDevEui(),
DevAddr = CreateDevAddr()
});
}
var devAddrJoining = managerInput[0].DevAddr;
var registryManagerMock = InitRegistryManager(managerInput);
// In this test we want no updates running
// initialize locks for test to run correctly
var lockToTake = new string[2] {
FullUpdateKey, GlobalDevAddrUpdateKey
};
await LockDevAddrHelper.PrepareLocksForTests(this.cache, lockToTake);
var deviceGetter = new DeviceGetter(registryManagerMock.Object, this.cache);
// Simulate three queries
var tasks =
from gw in new[] { gateway1, gateway2 }
select Enumerable.Repeat(gw, 2) into gws // repeat each gateway twice
from gw in gws
select deviceGetter.GetDeviceList(null, gw, new DevNonce(0xABCD), devAddrJoining);
await Task.WhenAll(tasks);
// If a cache miss it should save it in the redisCache
var devAddrcache = new LoRaDevAddrCache(this.cache, null, null);
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, devAddrJoining));
Assert.Single(queryResult);
var resultObject = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(managerInput[0].DevAddr, resultObject.DevAddr);
Assert.Equal(managerInput[0].GatewayId ?? string.Empty, resultObject.GatewayId);
Assert.Equal(managerInput[0].DevEUI, resultObject.DevEUI);
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>(), It.IsAny <int>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Once);
}
// This test simulate a call received by multiple server. It ensures IoT Hub is only queried once.
public async Task Multi_Gateway_When_DevAddr_Is_Not_In_Cache_Query_Iot_Hub_Only_Once_And_Save_In_Cache()
{
string gatewayId = NewUniqueEUI64();
DateTime dateTime = DateTime.UtcNow;
List <DevAddrCacheInfo> managerInput = new List <DevAddrCacheInfo>();
for (int i = 0; i < 2; i++)
{
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = NewUniqueEUI64(),
DevAddr = NewUniqueEUI32()
});
}
var devAddrJoining = managerInput[0].DevAddr;
var registryManagerMock = this.InitRegistryManager(managerInput);
// In this test we want no updates running
// initialize locks for test to run correctly
var lockToTake = new string[2] {
FullUpdateKey, DeltaUpdateKey
};
await LockDevAddrHelper.PrepareLocksForTests(this.cache, null, lockToTake);
var deviceGetter = new DeviceGetter(registryManagerMock.Object, this.cache);
// Simulate three queries
var tasks = new Task[3]
{
deviceGetter.GetDeviceList(null, gatewayId, "ABCD", devAddrJoining),
deviceGetter.GetDeviceList(null, gatewayId, "ABCD", devAddrJoining),
deviceGetter.GetDeviceList(null, gatewayId, "ABCD", devAddrJoining),
};
await Task.WhenAll(tasks);
// If a cache miss it should save it in the redisCache
var devAddrcache = new LoRaDevAddrCache(this.cache, null, null);
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, devAddrJoining));
Assert.Single(queryResult);
var resultObject = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(managerInput[0].DevAddr, resultObject.DevAddr);
Assert.Equal(managerInput[0].GatewayId, resultObject.GatewayId);
Assert.Equal(managerInput[0].DevEUI, resultObject.DevEUI);
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>(), It.IsAny <int>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Once);
}
// This test perform a full update and we check the following
// primary key present in the cache is still here after a fullupdate
// Items with same Devaddr are correctly saved (one old from cache, one from iot hub)
// Old cache items sharing a devaddr not in the new update are correctly removed
// Items with a devAddr not in the update are correctly still in cache
// Gateway Id is correctly updated in old cache information.
// Primary Key are not kept as UpdateTime is not similar
public async Task Full_Update_Perform_Correctly_On_Non_Empty_Cache_And_Keep_Old_Values_Except_Primary_Keys()
{
var oldGatewayId = NewUniqueEUI64();
var newGatewayId = NewUniqueEUI64();
var dateTime = DateTime.UtcNow;
var updateDateTime = DateTime.UtcNow.AddMinutes(3);
var primaryKey = Convert.ToBase64String(Encoding.UTF8.GetBytes(PrimaryKey));
var newValues = new List <DevAddrCacheInfo>();
for (var i = 0; i < 5; i++)
{
newValues.Add(new DevAddrCacheInfo()
{
DevEUI = TestEui.GenerateDevEui(),
DevAddr = CreateDevAddr(),
GatewayId = newGatewayId,
LastUpdatedTwins = updateDateTime
});
}
// The cache start as empty
var registryManagerMock = InitRegistryManager(newValues, newValues.Count);
// Set up the cache with expectation.
var cacheInput = new List <DevAddrCacheInfo>();
for (var i = 0; i < 5; i++)
{
cacheInput.Add(new DevAddrCacheInfo()
{
DevEUI = newValues[i].DevEUI,
DevAddr = newValues[i].DevAddr,
GatewayId = oldGatewayId,
LastUpdatedTwins = dateTime,
PrimaryKey = primaryKey
});
}
InitCache(this.cache, cacheInput);
// initialize locks for test to run correctly
await LockDevAddrHelper.PrepareLocksForTests(this.cache);
var devAddrCache = new LoRaDevAddrCache(this.cache, null, newGatewayId);
await devAddrCache.PerformNeededSyncs(registryManagerMock.Object);
// we expect the devices are saved, the double device id should not be there anymore
for (var i = 0; i < newValues.Count; i++)
{
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, newValues[i].DevAddr));
Assert.Single(queryResult);
var result2Object = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(newGatewayId, result2Object.GatewayId);
Assert.Equal(newValues[i].DevEUI, result2Object.DevEUI);
Assert.Equal(string.Empty, result2Object.PrimaryKey);
}
// Iot hub should never have been called.
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
// We expect to query for the key once (the device with an active connection)
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Never);
}
// This test perform a delta update and we check the following
// primary key present in the cache is still here after a delta up
// Items with save Devaddr are correctly saved (one old from cache, one from iot hub)
// Gateway Id is correctly updated in old cache information.
// Primary Key are kept as UpdateTime is similar
public async Task Delta_Update_Perform_Correctly_On_Non_Empty_Cache_And_Keep_Old_Values()
{
var oldGatewayId = NewUniqueEUI64();
var newGatewayId = NewUniqueEUI64();
var dateTime = DateTime.UtcNow;
var primaryKey = Convert.ToBase64String(Encoding.UTF8.GetBytes(PrimaryKey));
var managerInput = new List <DevAddrCacheInfo>();
var adressForDuplicateDevAddr = CreateDevAddr();
for (var i = 0; i < 5; i++)
{
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = TestEui.GenerateDevEui(),
DevAddr = CreateDevAddr(),
GatewayId = newGatewayId,
LastUpdatedTwins = dateTime
});
}
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = TestEui.GenerateDevEui(),
DevAddr = adressForDuplicateDevAddr,
GatewayId = newGatewayId,
LastUpdatedTwins = dateTime
});
var devAddrJoining = managerInput[0].DevAddr;
// The cache start as empty
var registryManagerMock = InitRegistryManager(managerInput, managerInput.Count);
// Set up the cache with expectation.
var cacheInput = new List <DevAddrCacheInfo>();
for (var i = 0; i < 5; i++)
{
cacheInput.Add(new DevAddrCacheInfo()
{
DevEUI = managerInput[i].DevEUI,
DevAddr = managerInput[i].DevAddr,
GatewayId = oldGatewayId,
LastUpdatedTwins = dateTime
});
}
cacheInput[2].PrimaryKey = primaryKey;
cacheInput[3].PrimaryKey = primaryKey;
var devEui = TestEui.GenerateDevEui();
cacheInput.Add(new DevAddrCacheInfo()
{
DevEUI = devEui,
DevAddr = adressForDuplicateDevAddr,
GatewayId = oldGatewayId,
PrimaryKey = primaryKey,
LastUpdatedTwins = dateTime
});
InitCache(this.cache, cacheInput);
// initialize locks for test to run correctly
var locksToTake = new string[1] {
FullUpdateKey
};
await LockDevAddrHelper.PrepareLocksForTests(this.cache, locksToTake);
var devAddrCache = new LoRaDevAddrCache(this.cache, null, newGatewayId);
await devAddrCache.PerformNeededSyncs(registryManagerMock.Object);
// we expect the devices are saved
for (var i = 0; i < managerInput.Count; i++)
{
if (managerInput[i].DevAddr != adressForDuplicateDevAddr)
{
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, managerInput[i].DevAddr));
Assert.Single(queryResult);
var resultObject = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(managerInput[i].GatewayId, resultObject.GatewayId);
Assert.Equal(managerInput[i].DevEUI, resultObject.DevEUI);
Assert.Equal(cacheInput[i].PrimaryKey, resultObject.PrimaryKey);
}
}
// let's check the devices with a double EUI
var query2Result = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, adressForDuplicateDevAddr));
Assert.Equal(2, query2Result.Length);
for (var i = 0; i < 2; i++)
{
var resultObject = JsonConvert.DeserializeObject <DevAddrCacheInfo>(query2Result[0].Value);
if (resultObject.DevEUI == devEui)
{
Assert.Equal(oldGatewayId, resultObject.GatewayId);
Assert.Equal(primaryKey, resultObject.PrimaryKey);
}
else
{
Assert.Equal(newGatewayId, resultObject.GatewayId);
Assert.True(string.IsNullOrEmpty(resultObject.PrimaryKey));
}
}
// Iot hub should never have been called.
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
// We expect to query for the key once (the device with an active connection)
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Never);
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>(), It.IsAny <int>()), Times.Never);
}
// Trigger delta update correctly to see if it performs correctly on an empty cache
public async Task Delta_Update_Perform_Correctly_On_Empty_Cache()
{
var gatewayId = NewUniqueEUI64();
var dateTime = DateTime.UtcNow;
var managerInput = new List <DevAddrCacheInfo>();
for (var i = 0; i < 5; i++)
{
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = TestEui.GenerateDevEui(),
DevAddr = CreateDevAddr(),
GatewayId = gatewayId,
LastUpdatedTwins = dateTime
});
}
var devAddrJoining = managerInput[0].DevAddr;
// The cache start as empty
var registryManagerMock = InitRegistryManager(managerInput);
// initialize locks for test to run correctly
var locksToTake = new string[1] {
FullUpdateKey
};
await LockDevAddrHelper.PrepareLocksForTests(this.cache, locksToTake);
var devAddrCache = new LoRaDevAddrCache(this.cache, null, gatewayId);
await devAddrCache.PerformNeededSyncs(registryManagerMock.Object);
while (!string.IsNullOrEmpty(this.cache.StringGet(GlobalDevAddrUpdateKey)))
{
await Task.Delay(100);
}
var foundItem = 0;
// we expect the devices are saved
for (var i = 0; i < 5; i++)
{
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, managerInput[i].DevAddr));
if (queryResult.Length > 0)
{
foundItem++;
Assert.Single(queryResult);
var resultObject = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(managerInput[i].GatewayId, resultObject.GatewayId);
Assert.Equal(managerInput[i].DevEUI, resultObject.DevEUI);
}
}
// Only two items should be updated by the delta updates
Assert.Equal(2, foundItem);
// Iot hub should never have been called.
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
// We expect to query for the key once (the device with an active connection)
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Never);
}
// This test perform a full update and we check the following
// primary key present in the cache is still here after a fullupdate
// Items with same Devaddr are correctly saved (one old from cache, one from iot hub)
// Old cache items sharing a devaddr not in the new update are correctly removed
// Items with a devAddr not in the update are correctly still in cache
// Gateway Id is correctly updated in old cache information.
// Primary Key are kept as UpdateTime is similar
public async Task Full_Update_Perform_Correctly_On_Non_Empty_Cache_And_Keep_Old_Values()
{
string oldGatewayId = NewUniqueEUI64();
string newGatewayId = NewUniqueEUI64();
DateTime dateTime = DateTime.UtcNow;
var primaryKey = Convert.ToBase64String(Encoding.UTF8.GetBytes(PrimaryKey));
List <DevAddrCacheInfo> newValues = new List <DevAddrCacheInfo>();
var adressForDuplicateDevAddr = NewUniqueEUI32();
for (int i = 0; i < 5; i++)
{
newValues.Add(new DevAddrCacheInfo()
{
DevEUI = NewUniqueEUI64(),
DevAddr = NewUniqueEUI32(),
GatewayId = newGatewayId,
LastUpdatedTwins = dateTime
});
}
newValues.Add(new DevAddrCacheInfo()
{
DevEUI = NewUniqueEUI64(),
DevAddr = adressForDuplicateDevAddr,
GatewayId = newGatewayId,
LastUpdatedTwins = dateTime
});
var devAddrJoining = newValues[0].DevAddr;
// The cache start as empty
var registryManagerMock = this.InitRegistryManager(newValues, newValues.Count());
// Set up the cache with expectation.
List <DevAddrCacheInfo> cacheInput = new List <DevAddrCacheInfo>();
for (int i = 0; i < 5; i++)
{
cacheInput.Add(new DevAddrCacheInfo()
{
DevEUI = newValues[i].DevEUI,
DevAddr = newValues[i].DevAddr,
GatewayId = oldGatewayId,
LastUpdatedTwins = dateTime
});
}
cacheInput[2].PrimaryKey = primaryKey;
cacheInput[3].PrimaryKey = primaryKey;
// this is a device that will be overwritten by the update as it share a devaddr with an updated device
var devEuiDoubleItem = NewUniqueEUI64();
cacheInput.Add(new DevAddrCacheInfo()
{
DevEUI = devEuiDoubleItem,
DevAddr = adressForDuplicateDevAddr,
GatewayId = oldGatewayId,
PrimaryKey = primaryKey,
LastUpdatedTwins = dateTime
});
this.InitCache(this.cache, cacheInput);
// initialize locks for test to run correctly
string[] neededLocksForTestToRun = new string[2] {
GlobalDevAddrUpdateKey, FullUpdateKey
};
await LockDevAddrHelper.PrepareLocksForTests(this.cache, neededLocksForTestToRun, null);
LoRaDevAddrCache devAddrCache = new LoRaDevAddrCache(this.cache, null, newGatewayId);
await devAddrCache.PerformNeededSyncs(registryManagerMock.Object);
// we expect the devices are saved, the double device id should not be there anymore
for (int i = 0; i < newValues.Count; i++)
{
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, newValues[i].DevAddr));
Assert.Single(queryResult);
var result2Object = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(newGatewayId, result2Object.GatewayId);
Assert.Equal(newValues[i].DevEUI, result2Object.DevEUI);
if (newValues[i].DevEUI == devEuiDoubleItem)
{
Assert.Equal(cacheInput[i].PrimaryKey, result2Object.PrimaryKey);
}
}
// Iot hub should never have been called.
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
// We expect to query for the key once (the device with an active connection)
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Never);
}
// This test perform a delta update and we check the following
// primary key present in the cache is still here after a delta up
// Items with save Devaddr are correctly saved (one old from cache, one from iot hub)
// Gateway Id is correctly updated in old cache information.
// Primary Key are dropped as updatetime is defferent
public async Task Delta_Update_Perform_Correctly_On_Non_Empty_Cache_And_Keep_Old_Values_Except_Primary_Key()
{
string oldGatewayId = NewUniqueEUI64();
string newGatewayId = NewUniqueEUI64();
DateTime dateTime = DateTime.UtcNow;
DateTime updateDateTime = DateTime.UtcNow.AddMinutes(10);
var primaryKey = Convert.ToBase64String(Encoding.UTF8.GetBytes(PrimaryKey));
List <DevAddrCacheInfo> managerInput = new List <DevAddrCacheInfo>();
var adressForDuplicateDevAddr = NewUniqueEUI32();
for (int i = 0; i < 5; i++)
{
managerInput.Add(new DevAddrCacheInfo()
{
DevEUI = NewUniqueEUI64(),
DevAddr = NewUniqueEUI32(),
GatewayId = newGatewayId,
LastUpdatedTwins = updateDateTime
});
}
var registryManagerMock = this.InitRegistryManager(managerInput, managerInput.Count());
// Set up the cache with expectation.
List <DevAddrCacheInfo> cacheInput = new List <DevAddrCacheInfo>();
for (int i = 0; i < 5; i++)
{
cacheInput.Add(new DevAddrCacheInfo()
{
DevEUI = managerInput[i].DevEUI,
DevAddr = managerInput[i].DevAddr,
LastUpdatedTwins = dateTime,
PrimaryKey = primaryKey
});
}
this.InitCache(this.cache, cacheInput);
// initialize locks for test to run correctly
string[] neededLocksForTestToRun = new string[2] {
GlobalDevAddrUpdateKey, DeltaUpdateKey
};
var locksGuideTest = new string[1] {
FullUpdateKey
};
await LockDevAddrHelper.PrepareLocksForTests(this.cache, neededLocksForTestToRun, locksGuideTest);
LoRaDevAddrCache devAddrCache = new LoRaDevAddrCache(this.cache, null, newGatewayId);
await devAddrCache.PerformNeededSyncs(registryManagerMock.Object);
// we expect the devices are saved
for (int i = 0; i < managerInput.Count; i++)
{
var queryResult = this.cache.GetHashObject(string.Concat(CacheKeyPrefix, managerInput[i].DevAddr));
Assert.Single(queryResult);
var resultObject = JsonConvert.DeserializeObject <DevAddrCacheInfo>(queryResult[0].Value);
Assert.Equal(managerInput[i].GatewayId, resultObject.GatewayId);
Assert.Equal(managerInput[i].DevEUI, resultObject.DevEUI);
// as the object changed the keys should not be saved
Assert.Equal(string.Empty, resultObject.PrimaryKey);
}
// Iot hub should never have been called.
registryManagerMock.Verify(x => x.CreateQuery(It.IsAny <string>()), Times.Once);
registryManagerMock.Verify(x => x.GetTwinAsync(It.IsAny <string>()), Times.Never);
// We expect to query for the key once (the device with an active connection)
registryManagerMock.Verify(x => x.GetDeviceAsync(It.IsAny <string>()), Times.Never);
}