/// <summary>
/// Creates a new hash filter.
/// </summary>
/// <param name="hashType">Hash function to use.</param>
/// <param name="salt">Salt used in hashing. It will be appended to the hashed value before hashing and
/// hashed together.</param>
/// <param name="monitoringOption">How to behave when invoking <see cref="EventSourceBase.Send"/> callbacks.</param>
/// <param name="keysToHash">Message keys whose values will be hashed and saved under the key.</param>
public HashFilter(HashType hashType, Func<string> salt, EventSourceCallbackMonitoringOptions monitoringOption, params string[] keysToHash)
: base(monitoringOption)
{
_salt = salt;
_keysToHash = keysToHash;
switch (hashType)
{
case HashType.Sha256:
_hashProvider = new SHA256Managed();
break;
default:
throw new ArgumentException($"Not implemented HashType option {hashType}");
}
}
/// <summary>
/// Creates a new instance.
/// </summary>
/// <param name="sets">Sets used by k-set algorithm.</param>
/// <param name="chooseSet">This function have to choose a proper set from the sets
/// based on passed <see cref="NuntiusMessage"/>.</param>
/// <param name="options">Configuration regarding checking of tasks returned by <see cref="EventSourceBase.Send"/> event
/// handlers.</param>
public KAnonymityFilter(IKAnonymitySet[] sets, Func<NuntiusMessage, int> chooseSet,
EventSourceCallbackMonitoringOptions options) : base(options)
{
if (sets == null || sets.Length == 0) throw new ArgumentException($"Parameter {nameof(sets)} must be array of length at least 1.");
foreach (var set in sets)
{
if (set == null) throw new ArgumentNullException($"One set from {nameof(sets)} was null.");
if (_sets.ContainsKey(set.Id)) throw new ArgumentException($"There was a set with the same id {set.Id} as a different set.");
_sets.Add(set.Id, set);
}
if (chooseSet == null) throw new ArgumentNullException($"{nameof(chooseSet)} function was null.");
_chooseSet = chooseSet;
}
/// <summary>
/// Creates a new instance.
/// </summary>
/// <param name="monitoringOption">Configuration regarding checking of tasks returned by <see cref="Send"/> event
/// handlers.</param>
protected EventSourceBase(EventSourceCallbackMonitoringOptions monitoringOption)
{
MonitoringOption = monitoringOption;
}
/// <summary>
/// Creates a new trim message filter.
/// </summary>
/// <param name="checkKeyPressenceInMessage">If set to true throws <see cref="KeyNotFoundException"/> when deleted key
/// is not in the message.</param>
/// <param name="monitoringOption">How to behave when invoking <see cref="EventSourceBase.Send"/> callbacks.</param>
/// <param name="keysToDelete">Keys to delete from the message.</param>
public TrimMessageFilter(bool checkKeyPressenceInMessage, EventSourceCallbackMonitoringOptions monitoringOption, params string[] keysToDelete)
: base(monitoringOption)
{
_checkKeyPressenceInMessage = checkKeyPressenceInMessage;
_keysToDelete = keysToDelete;
}
public TestFilter(EventSourceCallbackMonitoringOptions options, Action<NuntiusMessage> filterBody, Action<NuntiusMessage> preTaskBody)
: base(options)
{
_filterBody = filterBody;
_preTaskBody = preTaskBody;
}
/// <summary>
///
/// </summary>
/// <param name="intervalInMs">Interval in milliseconds. After receiving the first message, a timer is started
/// and only a last message from the interval given by this parameter is sent.</param>
/// <param name="options">Configuration regarding checking of tasks returned by
/// <see cref="EventSourceBase.Send"/> event.</param>
public LastFilter(int intervalInMs, EventSourceCallbackMonitoringOptions options) : base(options)
{
_intervalInMs = intervalInMs;
}
