/// <summary>
/// Construct new ZrePeer object
/// </summary>
/// <param name="container">The dictionary of peers</param>
/// <param name="guid">The identity for this peer</param>
/// <returns></returns>
public static ZrePeer NewPeer(Dictionary <Guid, ZrePeer> container, Guid guid)
{
var peer = new ZrePeer(guid);
container[guid] = peer; // overwrite any existing entry for same uuid
return(peer);
}
/// <summary>
/// We do this once a second:
/// - if peer has gone quiet, send TCP ping and emit EVASIVE event
/// - if peer has disappeared, expire it
/// </summary>
/// <param name="peer">the peer to ping</param>
public void PingPeer(ZrePeer peer)
{
if (ZrePeer.CurrentTimeMilliseconds() >= peer.ExpiredAt)
{
RemovePeer(peer);
}
else if (ZrePeer.CurrentTimeMilliseconds() >= peer.EvasiveAt)
{
// If peer is being evasive, force a TCP ping.
// ZeroMQTODO: do this only once for a peer in this state;
// it would be nicer to use a proper state machine
// for peer management.
ZreMsg.SendPing(_outbox, 0);
// Inform the calling application this peer is being evasive
_outbox.SendMoreFrame("EVASIVE");
_outbox.SendMoreFrame(peer.Uuid.ToByteArray());
_outbox.SendFrame(peer.Name);
}
}
/// <summary>
/// Have peer leave group
/// </summary>
/// <param name="peer"></param>
/// <param name="groupName"></param>
/// <returns></returns>
public ZreGroup LeavePeerGroup(ZrePeer peer, string groupName)
{
var group = RequirePeerGroup(groupName);
group.Leave(peer);
// Now tell the caller about the peer left group
_outbox.SendMoreFrame("LEAVE").SendMoreFrame(peer.Uuid.ToString()).SendMoreFrame(peer.Name).SendFrame(_name);
return group;
}
/// <summary>
/// Join peer to group
/// </summary>
/// <param name="peer">The peer that is joining thie group</param>
/// <param name="groupName">The name of the group to join</param>
/// <returns>the group joined</returns>
public ZreGroup JoinPeerGroup(ZrePeer peer, string groupName)
{
var group = RequirePeerGroup(groupName);
group.Join(peer);
// Now tell the caller about the peer joined group
_outbox.SendMoreFrame("JOIN").SendMoreFrame(peer.Uuid.ToString()).SendMoreFrame(peer.Name).SendFrame(_name);
return group;
}
/// <summary>
/// Remove a peer from our data structures
/// </summary>
/// <param name="peer"></param>
public void RemovePeer(ZrePeer peer)
{
// Tell the calling application the peer has gone
_outbox.SendMoreFrame("EXIT").SendMoreFrame(peer.Uuid.ToString()).SendFrame(peer.Name);
// Remove peer from any groups we've got it in
foreach (var peerGroup in _peerGroups.Values)
{
DeletePeer(peerGroup, peer);
}
// To destroy peer, we remove from peers hash table
_peers.Remove(peer.Uuid);
}
/// <summary>
/// Remove peer from group, if it's a member
/// </summary>
/// <param name="group"></param>
/// <param name="peer"></param>
public void DeletePeer(ZreGroup group, ZrePeer peer)
{
group.Leave(peer);
}
/// <summary>
/// Delete peer for a given endpoint
/// </summary>
/// <param name="peer"></param>
/// <param name="endpoint"></param>
public void PurgePeer(ZrePeer peer, string endpoint)
{
if (peer.Endpoint == endpoint)
{
peer.Disconnect();
}
}
/// <summary>
/// Send message to one peer
/// </summary>
/// <param name="peer">The peer to get msg</param>
/// <param name="msg">the message to send</param>
public void SendMessageToPeer(ZrePeer peer, ZreMsg msg)
{
peer.Send(msg);
}
/// <summary>
/// Remove peer from group
/// </summary>
/// <param name="peer"></param>
public void Leave(ZrePeer peer)
{
m_peers.Remove(peer.Uuid);
peer.IncrementStatus();
}
/// <summary>
/// Add peer to group
/// Ignore duplicate joins
/// </summary>
/// <param name="peer"></param>
public void Join(ZrePeer peer)
{
m_peers[peer.Uuid] = peer;
peer.IncrementStatus();
}
/// <summary>
/// Construct new ZrePeer object
/// </summary>
/// <param name="container">The dictionary of peers</param>
/// <param name="guid">The identity for this peer</param>
/// <returns></returns>
public static ZrePeer NewPeer(Dictionary<Guid, ZrePeer> container, Guid guid)
{
var peer = new ZrePeer(guid);
container[guid] = peer; // overwrite any existing entry for same uuid
return peer;
}
/// <summary>
/// Remove peer from group
/// </summary>
/// <param name="peer"></param>
public void Leave(ZrePeer peer)
{
m_peers.Remove(peer.Uuid);
peer.IncrementStatus();
}
/// <summary>
/// Add peer to group
/// Ignore duplicate joins
/// </summary>
/// <param name="peer"></param>
public void Join(ZrePeer peer)
{
m_peers[peer.Uuid] = peer;
peer.IncrementStatus();
}
