public override bool TryGetValue(UUID sessionID, string assoc, string varname, out UserSessionInfo.Entry value)
{
value = default(UserSessionInfo.Entry);
using (var conn = new NpgsqlConnection(m_ConnectionString))
{
conn.Open();
using (var cmd = new NpgsqlCommand("SELECT * FROM usersessiondata WHERE sessionid=@sessionid AND \"assoc\"=@assoc AND \"varname\"=@varname AND (NOT isexpiring OR expirydate >= @now)", conn))
{
cmd.Parameters.AddParameter("@sessionid", sessionID);
cmd.Parameters.AddParameter("@assoc", assoc);
cmd.Parameters.AddParameter("@varname", varname);
cmd.Parameters.AddParameter("@now", Date.Now);
using (var reader = cmd.ExecuteReader())
{
if (!reader.Read())
{
return(false);
}
Date expirydate = null;
if ((bool)reader["isexpiring"])
{
expirydate = reader.GetDate("expirydate");
}
value = new UserSessionInfo.Entry
{
Value = (string)reader["value"],
ExpiryDate = expirydate
};
return(true);
}
}
}
}
public override bool TryGetValueExtendLifetime(UUID sessionID, string assoc, string varname, TimeSpan span, out UserSessionInfo.Entry value)
{
UserSessionInfo.Entry val = default(UserSessionInfo.Entry);
bool success;
value = val;
using (var conn = new NpgsqlConnection(m_ConnectionString))
{
conn.Open();
success = conn.InsideTransaction((transaction) =>
{
using (var cmd = new NpgsqlCommand("SELECT * FROM usersessiondata WHERE sessionid = @sessionid AND \"assoc\" = @assoc AND \"varname\" = @varname AND (NOT isexpiring OR expirydate >= @now)", conn)
{
Transaction = transaction
})
{
cmd.Parameters.AddParameter("@sessionid", sessionID);
cmd.Parameters.AddParameter("@assoc", assoc);
cmd.Parameters.AddParameter("@varname", varname);
cmd.Parameters.AddParameter("@now", Date.Now);
using (var reader = cmd.ExecuteReader())
{
if (!reader.Read())
{
return(false);
}
val = new UserSessionInfo.Entry
{
Value = (string)reader["value"]
};
if ((bool)reader["isexpiring"])
{
val.ExpiryDate = reader.GetDate("expirydate");
}
}
}
if (val.ExpiryDate != null)
{
val.ExpiryDate = val.ExpiryDate.Add(span);
using (var cmd = new NpgsqlCommand("UPDATE usersessiondata SET expirydate = @expirydate WHERE sessionid = @sessionid AND \"assoc\" = @assoc AND \"varname\" = @varname", conn)
{
Transaction = transaction
})
{
cmd.Parameters.AddParameter("@expirydate", val.ExpiryDate);
cmd.Parameters.AddParameter("@sessionid", sessionID);
cmd.Parameters.AddParameter("@assoc", assoc);
cmd.Parameters.AddParameter("@varname", varname);
cmd.ExecuteNonQuery();
}
}
return(true);
});
}
value = val;
return(success);
}
public bool TryGetValue(UUID sessionID, KnownUserSessionInfoVariables varid, out UserSessionInfo.Entry value)
{
value = default(UserSessionInfo.Entry);
string assoc;
string varname;
return(UserSessionInfo.TryGetVarInfo(varid, out assoc, out varname) && TryGetValue(sessionID, assoc, varname, out value));
}
public override bool TryGetValue(UUID sessionID, string assoc, string varname, out UserSessionInfo.Entry value)
{
value = default(UserSessionInfo.Entry);
lock (m_UserSessionLock)
{
UserSessionInfo info;
bool f = m_UserSessions.TryGetValue(sessionID, out info) && info.TryGetValue(assoc, varname, out value);
if (f)
{
value = new UserSessionInfo.Entry(value);
}
return(f);
}
}
public override bool TryCompareValueExtendLifetime(UUID sessionID, string assoc, string varname, string oldvalue, TimeSpan span, out UserSessionInfo.Entry value)
{
value = default(UserSessionInfo.Entry);
lock (m_UserSessionLock)
{
UserSessionInfo info;
if (!m_UserSessions.TryGetValue(sessionID, out info))
{
return(false);
}
if (info.TryGetValue(assoc, varname, out value) && value.Value == oldvalue)
{
if (value.ExpiryDate != null)
{
value.ExpiryDate = value.ExpiryDate.Add(span);
}
value = new UserSessionInfo.Entry(value);
return(true);
}
return(false);
}
}
public override bool TryCompareAndChangeValueExtendLifetime(UUID sessionID, string assoc, string varname, string oldvalue, string newvalue, TimeSpan span, out UserSessionInfo.Entry value)
{
UserSessionInfo.Entry val = default(UserSessionInfo.Entry);
bool success;
value = val;
using (var conn = new MySqlConnection(m_ConnectionString))
{
conn.Open();
success = conn.InsideTransaction((transaction) =>
{
using (var cmd = new MySqlCommand("SELECT * FROM usersessiondata WHERE sessionid = @sessionid AND assoc = @assoc AND varname = @varname AND `value`=@value AND (NOT isexpiring OR expirydate >= @now)", conn)
{
Transaction = transaction
})
{
cmd.Parameters.AddParameter("@sessionid", sessionID);
cmd.Parameters.AddParameter("@assoc", assoc);
cmd.Parameters.AddParameter("@varname", varname);
cmd.Parameters.AddParameter("@value", oldvalue);
cmd.Parameters.AddParameter("@now", Date.Now);
using (var reader = cmd.ExecuteReader())
{
if (!reader.Read())
{
return(false);
}
val = new UserSessionInfo.Entry
{
Value = reader.GetString("value")
};
if (reader.GetBool("isexpiring"))
{
val.ExpiryDate = reader.GetDate("expirydate");
}
}
}
val.Value = newvalue;
if (val.ExpiryDate != null)
{
val.ExpiryDate = val.ExpiryDate.Add(span);
using (var cmd = new MySqlCommand("UPDATE usersessiondata SET expirydate = @expirydate, `value`=@newvalue WHERE sessionid = @sessionid AND assoc = @assoc AND varname = @varname AND `value` = @value", conn)
{
Transaction = transaction
})
{
cmd.Parameters.AddParameter("@expirydate", val.ExpiryDate);
cmd.Parameters.AddParameter("@sessionid", sessionID);
cmd.Parameters.AddParameter("@assoc", assoc);
cmd.Parameters.AddParameter("@varname", varname);
cmd.Parameters.AddParameter("@value", oldvalue);
cmd.Parameters.AddParameter("@newvalue", newvalue);
return(cmd.ExecuteNonQuery() > 0);
}
}
else
{
using (var cmd = new MySqlCommand("UPDATE usersessiondata SET `value`=@newvalue WHERE sessionid = @sessionid AND assoc = @assoc AND varname = @varname AND `value` = @value", conn)
{
Transaction = transaction
})
{
cmd.Parameters.AddParameter("@sessionid", sessionID);
cmd.Parameters.AddParameter("@assoc", assoc);
cmd.Parameters.AddParameter("@varname", varname);
cmd.Parameters.AddParameter("@value", oldvalue);
cmd.Parameters.AddParameter("@newvalue", newvalue);
return(cmd.ExecuteNonQuery() > 0);
}
}
});
}
value = val;
return(success);
}
public abstract bool TryGetValue(UUID sessionID, string assoc, string varname, out UserSessionInfo.Entry value);
public abstract bool TryCompareAndChangeValueExtendLifetime(UUID sessionID, string assoc, string varname, string oldvalue, string newvalue, TimeSpan span, out UserSessionInfo.Entry value);
public abstract bool TryGetValueExtendLifetime(UUID sessionID, string assoc, string varname, TimeSpan span, out UserSessionInfo.Entry value);
public bool TryGetValueExtendLifetime(UUID sessionID, KnownUserSessionInfoVariables varid, TimeSpan span, out UserSessionInfo.Entry value)
{
string assoc;
string varname;
value = default(UserSessionInfo.Entry);
return(UserSessionInfo.TryGetVarInfo(varid, out assoc, out varname) && TryGetValueExtendLifetime(sessionID, assoc, varname, span, out value));
}
