/// <summary>
/// Sends messages to network agents instructing them to send back traffic
/// stats. The messages are sent synchronously in parallel and control
/// is not returned to the caller until all network agents have replied.
/// The request can include a delta threshold expressed as a percentage
/// in which case agents will filter out state for RAPs whose current
/// bandwidth falls within the last reported bandwidth plus or minus delta.
/// </summary>
/// <param name="deltaThreshold">Stats suppression threshold.</param>
/// <param name="reset">True iff stats to be set to zero once read.</param>
public void GetStatsFromServers(double deltaThreshold, bool reset)
{
MessageTypes replyType = MessageTypes.MessageTypeStatsReplyDelta;
int typeIndex = (int)replyType;
ManualResetEvent NetMessagesComplete =
NetBeginStatsMessages(netRateController.UpdateTrafficStatsDelta,
deltaThreshold, true, false, reset, true);
lock (LockPendingReplies[typeIndex])
{
foreach (Connection conn in AgentNameToConn.Values)
{
if (conn.ListQueues.Count == 0)
continue;
uint countRaps = (uint)conn.ListRap.Count;
MessageStatsQueryDelta mStatsQuery =
new MessageStatsQueryDelta(++SeqNo, countRaps, deltaThreshold, reset);
SendParallel(conn, mStatsQuery.Serialize, replyType, mStatsQuery.SeqNo);
}
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
} // lock
replyType = MessageTypes.MessageTypeIoFlowStatsReply;
typeIndex = (int)replyType;
lock (LockPendingReplies[typeIndex])
{
foreach (Connection conn in IoFlowNameToConn.Values)
{
if (conn.DictIoFlows.Count == 0)
continue;
MessageIoFlowStatsQuery mIoFlowStatsQuery = new MessageIoFlowStatsQuery(++SeqNo);
SendParallel(conn, mIoFlowStatsQuery.Serialize, replyType, mIoFlowStatsQuery.SeqNo);
}
WaitForParallelReplies(replyType, Parameters.DEFAULT_MESSAGE_TIMEOUT_MS);
} // lock
NetMessagesComplete.WaitOne();
}
public static MessageIoFlowStatsQuery CreateFromNetBytes(byte[] buffer, int offset)
{
int oldOffset = offset;
MessageIoFlowStatsQuery msg = new MessageIoFlowStatsQuery(0);
msg.Length = (uint)Utils.Int32FromNetBytes(buffer, offset); offset += 4;
msg.SeqNo = (uint)Utils.Int32FromNetBytes(buffer, offset); offset += 4;
msg.MessageType = buffer[offset++];
return msg;
}
