Add Nodediscovry

src/DotNetCore.CAP.Dashboard/NodeDiscovery/CAP.DiscoveryOptions.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    public class DiscoveryOptions
+    {
+        public const string DefaultDiscoveryServerHost = "localhost";
+        public const int DefaultDiscoveryServerPort = 8500;
+
+        public const string DefaultCurrentNodeHostName = "localhost";
+        public const int DefaultCurrentNodePort = 5000;
+
+        public const string DefaultMatchPath = "/cap";
+
+        public DiscoveryOptions()
+        {
+            DiscoveryServerHostName = DefaultDiscoveryServerHost;
+            DiscoveryServerPort = DefaultDiscoveryServerPort;
+
+            CurrentNodeHostName = DefaultCurrentNodeHostName;
+            CurrentNodePort = DefaultCurrentNodePort;
+
+            MatchPath = DefaultMatchPath;
+        }
+
+        public string DiscoveryServerHostName { get; set; }
+        public int DiscoveryServerPort { get; set; }
+
+        public string CurrentNodeHostName { get; set; }
+        public int CurrentNodePort { get; set; }
+
+        public string NodeId { get; set; }
+        public string NodeName { get; set; }
+
+        public string MatchPath { get; set; }
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/CAP.DiscoveryOptionsExtensions.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
+using DotNetCore.CAP;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    internal sealed class DiscoveryOptionsExtension : ICapOptionsExtension
+    {
+        private readonly Action<DiscoveryOptions> _options;
+
+        public DiscoveryOptionsExtension(Action<DiscoveryOptions> option)
+        {
+            _options = option;
+        }
+
+        public void AddServices(IServiceCollection services)
+        {
+            var discoveryOptions = new DiscoveryOptions();
+
+            _options?.Invoke(discoveryOptions);
+            services.AddSingleton(discoveryOptions);
+
+            services.AddSingleton<IDiscoveryProviderFactory, DiscoveryProviderFactory>();
+            services.AddSingleton<IProcessingServer, ConsulProcessingNodeServer>();
+            services.AddSingleton(x =>
+            {
+                var configOptions = x.GetService<DiscoveryOptions>();
+                var factory = x.GetService<IDiscoveryProviderFactory>();
+                return factory.Create(configOptions);
+            });
+        }
+    }
+
+    public static class CapDiscoveryOptionsExtensions
+    {
+        public static CapOptions UseDiscovery(this CapOptions capOptions)
+        {
+            return capOptions.UseDiscovery(opt => { });
+        }
+
+        public static CapOptions UseDiscovery(this CapOptions capOptions, Action<DiscoveryOptions> options)
+        {
+            if (options == null)
+            {
+                throw new ArgumentNullException(nameof(options));
+            }
+
+            capOptions.RegisterExtension(new DiscoveryOptionsExtension(options));
+
+            return capOptions;
+        }
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/IDiscoveryProviderFactory.Default.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
+using Microsoft.Extensions.Logging;
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    internal class DiscoveryProviderFactory : IDiscoveryProviderFactory
+    {
+        private readonly ILoggerFactory _loggerFactory;
+
+        public DiscoveryProviderFactory(ILoggerFactory loggerFactory)
+        {
+            _loggerFactory = loggerFactory;
+        }
+
+        public INodeDiscoveryProvider Create(DiscoveryOptions options)
+        {
+            if (options == null)
+            {
+                throw new ArgumentNullException(nameof(options));
+            }
+
+            return new ConsulNodeDiscoveryProvider(_loggerFactory, options);
+        }
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/IDiscoveryProviderFactory.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    internal interface IDiscoveryProviderFactory
+    {
+        INodeDiscoveryProvider Create(DiscoveryOptions options);
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/INodeDiscoveryProvider.Consul.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Consul;
+using Microsoft.Extensions.Logging;
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    public class ConsulNodeDiscoveryProvider : INodeDiscoveryProvider, IDisposable
+    {
+        private readonly ILogger<ConsulNodeDiscoveryProvider> _logger;
+        private readonly DiscoveryOptions _options;
+        private ConsulClient _consul;
+
+        public ConsulNodeDiscoveryProvider(ILoggerFactory logger, DiscoveryOptions options)
+        {
+            _logger = logger.CreateLogger<ConsulNodeDiscoveryProvider>();
+            _options = options;
+
+            InitClient();
+        }
+
+        public void Dispose()
+        {
+            _consul.Dispose();
+        }
+
+        public async Task<IList<Node>> GetNodes()
+        {
+            try
+            {
+                var nodes = new List<Node>();
+                var services = await _consul.Catalog.Services();
+                foreach (var service in services.Response)
+                {
+                    var serviceInfo = await _consul.Catalog.Service(service.Key);
+                    var node = serviceInfo.Response.SkipWhile(x => !x.ServiceTags.Contains("CAP"))
+                        .Select(info => new Node
+                        {
+                            Id = info.ServiceID,
+                            Name = info.ServiceName,
+                            Address = info.ServiceAddress,
+                            Port = info.ServicePort,
+                            Tags = string.Join(", ", info.ServiceTags)
+                        }).ToList();
+
+                    nodes.AddRange(node);
+                }
+
+                CapCache.Global.AddOrUpdate("cap.nodes.count", nodes.Count, TimeSpan.FromSeconds(60), true);
+
+                return nodes;
+            }
+            catch (Exception ex)
+            {
+                CapCache.Global.AddOrUpdate("cap.nodes.count", 0, TimeSpan.FromSeconds(20));
+
+                _logger.LogError(
+                    $"Get consul nodes raised an exception. Exception:{ex.Message},{ex.InnerException.Message}");
+                return null;
+            }
+        }
+
+        public Task RegisterNode()
+        {
+            try
+            {
+                return _consul.Agent.ServiceRegister(new AgentServiceRegistration
+                {
+                    ID = _options.NodeId,
+                    Name = _options.NodeName,
+                    Address = _options.CurrentNodeHostName,
+                    Port = _options.CurrentNodePort,
+                    Tags = new[] {"CAP", "Client", "Dashboard"},
+                    Check = new AgentServiceCheck
+                    {
+                        DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(30),
+                        Interval = TimeSpan.FromSeconds(10),
+                        Status = HealthStatus.Passing,
+                        HTTP =
+                            $"http://{_options.CurrentNodeHostName}:{_options.CurrentNodePort}{_options.MatchPath}/health"
+                    }
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(
+                    $"Get consul nodes raised an exception. Exception:{ex.Message},{ex.InnerException.Message}");
+                return null;
+            }
+        }
+
+        private void InitClient()
+        {
+            _consul = new ConsulClient(config =>
+            {
+                config.WaitTime = TimeSpan.FromSeconds(5);
+                config.Address = new Uri($"http://{_options.DiscoveryServerHostName}:{_options.DiscoveryServerPort}");
+            });
+        }
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/INodeDiscoveryProvider.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    public interface INodeDiscoveryProvider
+    {
+        Task<IList<Node>> GetNodes();
+
+        Task RegisterNode();
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/IProcessingServer.Consul.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    internal class ConsulProcessingNodeServer : IProcessingServer
+    {
+        private readonly DiscoveryOptions _dashboardOptions;
+        private readonly IDiscoveryProviderFactory _discoveryProviderFactory;
+
+        public ConsulProcessingNodeServer(
+            DiscoveryOptions dashboardOptions,
+            IDiscoveryProviderFactory discoveryProviderFactory)
+        {
+            _dashboardOptions = dashboardOptions;
+            _discoveryProviderFactory = discoveryProviderFactory;
+        }
+
+        public void Start()
+        {
+            var discoveryProvider = _discoveryProviderFactory.Create(_dashboardOptions);
+
+            discoveryProvider.RegisterNode();
+        }
+
+        public void Pulse()
+        {
+            //ignore
+        }
+
+        public void Dispose()
+        {
+        }
+    }
+}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/NodeDiscovery/Node.cs

+// Copyright (c) .NET Core Community. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+namespace DotNetCore.CAP.Dashboard.NodeDiscovery
+{
+    public class Node
+    {
+        public string Id { get; set; }
+
+        public string Name { get; set; }
+
+        public string Address { get; set; }
+
+        public int Port { get; set; }
+
+        public string Tags { get; set; }
+    }
+}
\ No newline at end of file