示例#1
0
 private Dictionary <string, IList <DiscoverableService> > RangeServicesToDictionary(IDictionary <string, string> resp)
 {
     return(resp.Select(kvp => DiscoverableService.CreateFromEtcdKey(kvp.Key)).Aggregate(new Dictionary <string, IList <DiscoverableService> >(), (acc, item) =>
     {
         IList <DiscoverableService> list;
         if (acc.TryGetValue(item.Type, out list))
         {
             list.Add(item);
         }
         else
         {
             acc.Add(item.Type, new List <DiscoverableService> {
                 item
             });
         }
         return acc;
     }));
 }
示例#2
0
        private async Task Run()
        {
            availableNodes = RangeServicesToDictionary(await etcdClient.GetRange("heartbeat"));

            watcher = await etcdClient.WatchRange("heartbeat");

            watcher.Subscribe(events =>
            {
                foreach (var e in events)
                {
                    var service = DiscoverableService.CreateFromEtcdKey(e.Key);
                    switch (e.Type)
                    {
                    case EventType.Put:
                        IList <DiscoverableService> values;
                        if (availableNodes.TryGetValue(service.Type, out values))
                        {
                            values.Add(service);
                        }
                        else
                        {
                            availableNodes.Add(service.Type, new List <DiscoverableService> {
                                service
                            });
                        }
                        break;

                    case EventType.Delete:
                        var valuesForKey = availableNodes[service.Type];
                        var isDeleted    = valuesForKey.Remove(service);
                        if (!isDeleted)
                        {
                            throw new Exception("This can not happen");
                        }
                        if (!valuesForKey.Any())
                        {
                            availableNodes.Remove(e.Key);
                        }
                        break;
                    }
                }
                Console.WriteLine($"Available nodes {availableNodes.Aggregate(string.Empty, (acc, item) => $"{item.Key} - {item.Value.Aggregate(string.Empty, (a, i) => $"{i.Address} {a}")} {acc}")}");
            });
        }