// Returns a new EventHub instance for the specified name
private EventHub GetEventHub(HFClient client, string name)
{
EventHub ehub = null;
Node e = eventHubs.GetOrNull(name);
if (e != null)
{
ehub = client.NewEventHub(e.Name, e.Url, e.Properties);
}
return(ehub);
}
// Reconstructs an existing channel
private async Task <Channel> ReconstructChannelAsync(HFClient client, string channelName, JToken jsonChannel, CancellationToken token = default(CancellationToken))
{
Channel channel;
channel = client.NewChannel(channelName);
// orderers is an array of orderer name strings
JArray ordererNames = jsonChannel["orderers"] as JArray;
//out("Orderer names: " + (ordererNames == null ? "null" : ordererNames.toString()));
if (ordererNames != null)
{
foreach (JToken jsonVal in ordererNames)
{
string ordererName = jsonVal.Value <string>();
Orderer orderer = GetOrderer(client, ordererName);
if (orderer == null)
{
throw new NetworkConfigurationException($"Error constructing channel {channelName}. Orderer {ordererName} not defined in configuration");
}
channel.AddOrderer(orderer);
}
}
// peers is an object containing a nested object for each peer
JToken jsonPeers = jsonChannel["peers"];
bool foundPeer = false;
//out("Peers: " + (peers == null ? "null" : peers.toString()));
if (jsonPeers != null)
{
foreach (JProperty prop in jsonPeers.Children <JProperty>())
{
string peerName = prop.Name;
if (logger.IsTraceEnabled())
{
logger.Trace($"NetworkConfig.reconstructChannel: Processing peer {peerName}");
}
JToken jsonPeer = prop.Value;
if (jsonPeer == null)
{
throw new NetworkConfigurationException($"Error constructing channel {channelName}. Invalid peer entry: {peerName}");
}
Peer peer = GetPeer(client, peerName);
if (peer == null)
{
throw new NetworkConfigurationException($"Error constructing channel {channelName}. Peer {peerName} not defined in configuration");
}
// Set the various roles
PeerOptions peerOptions = PeerOptions.CreatePeerOptions();
foreach (PeerRole peerRole in Enum.GetValues(typeof(PeerRole)))
{
SetPeerRole(peerOptions, jsonPeer, peerRole);
}
foundPeer = true;
// Add the event hub associated with this peer
EventHub eventHub = GetEventHub(client, peerName);
if (eventHub != null)
{
await channel.AddEventHubAsync(eventHub, token).ConfigureAwait(false);
if (!peerOptions.HasPeerRoles())
{
// means no roles were found but there is an event hub so define all roles but eventing.
peerOptions.SetPeerRoles(new List <PeerRole> {
PeerRole.ENDORSING_PEER, PeerRole.CHAINCODE_QUERY, PeerRole.LEDGER_QUERY
});
}
}
await channel.AddPeerAsync(peer, peerOptions, token).ConfigureAwait(false);
}
}
if (!foundPeer)
{
// peers is a required field
throw new NetworkConfigurationException($"Error constructing channel {channelName}. At least one peer must be specified");
}
return(channel);
}
