public void ExecuteEvictionLogsTheNumberOfRecordsRemoved()
{
// given
var configuration = MockBeaconCacheConfig(1000L, 1000L, 2000L);
var target = CreateTimeEvictionStrategyWith(configuration);
var keyOne = new BeaconKey(1, 0);
var keyTwo = new BeaconKey(42, 0);
mockTimingProvider.ProvideTimestampInMilliseconds().Returns(1000L, 2099L);
mockBeaconCache.BeaconKeys.Returns(new HashSet <BeaconKey> {
keyOne, keyTwo
});
mockBeaconCache.EvictRecordsByAge(keyOne, Arg.Any <long>()).Returns(2);
mockBeaconCache.EvictRecordsByAge(keyTwo, Arg.Any <long>()).Returns(5);
mockLogger.IsDebugEnabled.Returns(true);
// when
target.Execute();
// then verify that the logger was invoked
_ = mockLogger.Received(2).IsDebugEnabled;
mockLogger.Received(1).Debug($"{target.GetType().Name} - Removed 2 records from Beacon with key {keyOne}");
mockLogger.Received(1).Debug($"{target.GetType().Name} - Removed 5 records from Beacon with key {keyTwo}");
}
public void ExecuteEvictionLogsTheNumberOfRecordsRemoved()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new TimeEvictionStrategy(mockLogger, mockBeaconCache, configuration, mockTimingProvider, isShutdownFunc);
mockTimingProvider.ProvideTimestampInMilliseconds().Returns(1000L, 2099L);
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
1, 42
});
mockBeaconCache.EvictRecordsByAge(1, Arg.Any <long>()).Returns(2);
mockBeaconCache.EvictRecordsByAge(42, Arg.Any <long>()).Returns(5);
mockLogger.IsDebugEnabled.Returns(true);
// when
target.Execute();
// then verify that the logger was invoked
var tmp = mockLogger.Received(2).IsDebugEnabled;
mockLogger.Received(1).Debug(target.GetType().Name + " - Removed 2 records from Beacon with ID 1");
mockLogger.Received(1).Debug(target.GetType().Name + " - Removed 5 records from Beacon with ID 42");
}
private void DoExecute()
{
// first get a snapshot of all inserted beacons
var beaconKeys = beaconCache.BeaconKeys;
if (beaconKeys.Count == 0)
{
// no beacons - set last run timestamp and return immediately
LastRunTimestamp = timingProvider.ProvideTimestampInMilliseconds();
return;
}
// retrieve the timestamp when we start with execution
var currentTimestamp = timingProvider.ProvideTimestampInMilliseconds();
var smallestAllowedBeaconTimestamp = currentTimestamp - configuration.MaxRecordAge;
// iterate over the previously obtained set and evict for each beacon
using (IEnumerator <BeaconKey> beaconKeyIterator = beaconKeys.GetEnumerator())
{
while (!isShutdownFunc() && beaconKeyIterator.MoveNext())
{
var beaconKey = beaconKeyIterator.Current;
var numRecordsRemoved = beaconCache.EvictRecordsByAge(beaconKey, smallestAllowedBeaconTimestamp);
if (numRecordsRemoved > 0 && logger.IsDebugEnabled)
{
logger.Debug($"{GetType().Name} - Removed {numRecordsRemoved.ToInvariantString()} records from Beacon with key {beaconKey}");
}
}
}
// last but not least update the last runtime
LastRunTimestamp = currentTimestamp;
}