private static async ValueTask <RedisResult> JoinedParticipantsRepository_RemoveParticipantSafe(
IKeyValueDatabaseActions actions, string participantId, string participantKey, string conferenceKeyTemplate,
string connectionId)
{
var conferenceId = await actions.GetAsync(participantKey);
if (conferenceId == null)
{
return(RedisResult.Create(RedisValue.Null));
}
var conferenceKey = conferenceKeyTemplate.Replace("*", conferenceId);
var actualConnectionId = await actions.HashGetAsync(conferenceKey, participantId);
if (actualConnectionId == connectionId)
{
await actions.KeyDeleteAsync(participantKey);
await actions.HashDeleteAsync(conferenceKey, participantId);
return(RedisResult.Create(true));
}
return(RedisResult.Create(false));
}
private void RemoveChannel(IKeyValueDatabaseActions actions, string conferenceId, string channel)
{
var messagesKey = GetKey(conferenceId, channel);
var typingKey = GetKey(conferenceId, channel);
_ = actions.KeyDeleteAsync(messagesKey);
_ = actions.KeyDeleteAsync(typingKey);
}
public static async ValueTask <T?> HashGetAsync <T>(this IKeyValueDatabaseActions database, string hashKey,
string key)
{
var result = await database.HashGetAsync(hashKey, key);
if (result == null)
{
return(default);
private static async ValueTask <bool?> RemoveParticipantSafe(IKeyValueDatabaseActions database,
string participantId, string connectionId)
{
var participantToConferenceKey = GetParticipantToConferenceKey(participantId);
var conferenceToParticipantsKey = GetConferenceToParticipantsKey("*");
var result = await database.ExecuteScriptAsync(
RedisScript.JoinedParticipantsRepository_RemoveParticipantSafe, participantId,
participantToConferenceKey, conferenceToParticipantsKey, connectionId);
if (result.IsNull)
{
return(null);
}
return((bool)result);
}
private static async ValueTask <PreviousParticipantState?> RemoveParticipant(IKeyValueDatabaseActions database,
string participantId)
{
var participantToConferenceKey = GetParticipantToConferenceKey(participantId);
var conferenceToParticipantsKey = GetConferenceToParticipantsKey("*");
var result = await database.ExecuteScriptAsync(RedisScript.JoinedParticipantsRepository_RemoveParticipant,
participantId, participantToConferenceKey, conferenceToParticipantsKey);
if (result.IsNull)
{
return(null);
}
var arr = (string[])result;
return(new PreviousParticipantState(arr[0], arr[1]));
}
private static async ValueTask <RedisResult> JoinedParticipantsRepository_RemoveParticipant(
IKeyValueDatabaseActions actions, string participantId, string participantKey, string conferenceKeyTemplate)
{
var conferenceId = await actions.GetAsync(participantKey);
if (conferenceId == null)
{
return(RedisResult.Create(RedisValue.Null));
}
await actions.KeyDeleteAsync(participantKey);
var conferenceKey = conferenceKeyTemplate.Replace("*", conferenceId);
var previousConnectionId = await actions.HashGetAsync(conferenceKey, participantId);
await actions.HashDeleteAsync(conferenceKey, participantId);
return(RedisResult.Create(new RedisValue[] { conferenceId, previousConnectionId }));
}
private static async ValueTask <RedisResult> RoomRepository_SetParticipantRoom(IKeyValueDatabaseActions actions,
string roomMappingKey, string roomListKey, string participantId, string newRoomId)
{
var roomExists = await actions.HashExistsAsync(roomListKey, newRoomId);
if (!roomExists)
{
return(RedisResult.Create(false));
}
await actions.HashSetAsync(roomMappingKey, participantId, newRoomId);
return(RedisResult.Create(true));
}
