/// <inheritdoc />
public void Learn(ReplicaResult result, IReplicaStorageProvider storageProvider)
{
var storage = storageProvider.Obtain <bool>(StorageKey);
var wasLeader = IsLeader(result.Replica, storage, out var hadStoredStatus);
var isLeader = resultDetector.IsLeaderResult(result);
if (isLeader == wasLeader)
{
return;
}
var updatedStatus = hadStoredStatus
? storage.TryUpdate(result.Replica, isLeader, wasLeader)
: storage.TryAdd(result.Replica, isLeader);
if (updatedStatus)
{
if (isLeader)
{
LogLeaderDetected(result.Replica);
}
else
{
LogLeaderFailed(result.Replica);
}
}
}
public void Learn_should_correctly_store_new_health(bool?old, bool isLeader, bool?expected)
{
if (old.HasValue)
{
storage[replica] = old.Value;
}
resultDetector.IsLeaderResult(result).Returns(isLeader);
modifier.Learn(result, storageProvider);
if (expected.HasValue)
{
storage[replica].Should().Be(expected.Value);
}
else
{
storage.Should().NotContainKey(replica);
}
}
