Initial import of the CBDDC codebase with docs and tests. Add a .NET-focused gitignore to keep generated artifacts out of source control.
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This commit is contained in:
Joseph Doherty
348
samples/ZB.MOM.WW.CBDDC.Sample.Console/ConsoleInteractiveService.cs
Executable file
348
samples/ZB.MOM.WW.CBDDC.Sample.Console/ConsoleInteractiveService.cs
Executable file
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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using ZB.MOM.WW.CBDDC.Core;
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using ZB.MOM.WW.CBDDC.Core.Cache;
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using ZB.MOM.WW.CBDDC.Core.Diagnostics;
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using ZB.MOM.WW.CBDDC.Core.Sync;
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using ZB.MOM.WW.CBDDC.Core.Storage;
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using ZB.MOM.WW.CBDDC.Network;
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using ZB.MOM.WW.CBDDC.Persistence.BLite;
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using Microsoft.Extensions.DependencyInjection; // For IServiceProvider if needed
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using Serilog.Context;
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using ZB.MOM.WW.CBDDC.Sample.Console;
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using ZB.MOM.WW.CBDDC.Core.Network;
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namespace ZB.MOM.WW.CBDDC.Sample.Console;
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public class ConsoleInteractiveService : BackgroundService
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{
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private readonly ILogger<ConsoleInteractiveService> _logger;
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private readonly SampleDbContext _db;
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private readonly ICBDDCNode _node;
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private readonly IHostApplicationLifetime _lifetime;
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// Auxiliary services for status/commands
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private readonly IDocumentCache _cache;
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private readonly IOfflineQueue _queue;
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private readonly ICBDDCHealthCheck _healthCheck;
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private readonly ISyncStatusTracker _syncTracker;
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private readonly IServiceProvider _serviceProvider;
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private readonly IPeerNodeConfigurationProvider _configProvider;
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/// <summary>
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/// Initializes a new instance of the <see cref="ConsoleInteractiveService"/> class.
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/// </summary>
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/// <param name="logger">The logger used by the interactive service.</param>
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/// <param name="db">The sample database context.</param>
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/// <param name="node">The active CBDDC node instance.</param>
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/// <param name="lifetime">The application lifetime controller.</param>
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/// <param name="cache">The document cache service.</param>
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/// <param name="queue">The offline queue service.</param>
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/// <param name="healthCheck">The health check service.</param>
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/// <param name="syncTracker">The sync status tracker.</param>
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/// <param name="serviceProvider">The service provider for resolving optional services.</param>
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/// <param name="peerNodeConfigurationProvider">The provider for peer node configuration.</param>
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public ConsoleInteractiveService(
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ILogger<ConsoleInteractiveService> logger,
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SampleDbContext db,
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ICBDDCNode node,
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IHostApplicationLifetime lifetime,
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IDocumentCache cache,
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IOfflineQueue queue,
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ICBDDCHealthCheck healthCheck,
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ISyncStatusTracker syncTracker,
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IServiceProvider serviceProvider,
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IPeerNodeConfigurationProvider peerNodeConfigurationProvider)
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{
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_logger = logger;
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_db = db;
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_node = node;
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_lifetime = lifetime;
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_cache = cache;
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_queue = queue;
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_healthCheck = healthCheck;
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_syncTracker = syncTracker;
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_serviceProvider = serviceProvider;
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_configProvider = peerNodeConfigurationProvider;
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}
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/// <inheritdoc />
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protected override async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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var config = await _configProvider.GetConfiguration();
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System.Console.WriteLine($"--- Interactive Console ---");
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System.Console.WriteLine($"Node ID: {config.NodeId}");
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PrintHelp();
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while (!stoppingToken.IsCancellationRequested)
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{
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// Non-blocking read to allow cancellation check
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if (!System.Console.KeyAvailable)
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{
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await Task.Delay(100, stoppingToken);
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continue;
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}
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var input = System.Console.ReadLine();
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if (string.IsNullOrEmpty(input)) continue;
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try
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{
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using (LogContext.PushProperty("NodeId", config.NodeId))
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using (LogContext.PushProperty("Command", input))
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using (LogContext.PushProperty("OperationId", Guid.NewGuid().ToString("N")))
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{
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_logger.LogInformation("Handling interactive command {Command}", input);
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await HandleInput(input);
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}
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}
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catch (Exception ex)
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{
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System.Console.WriteLine($"Error: {ex.Message}");
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}
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if (input == "q" || input == "quit")
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{
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_lifetime.StopApplication();
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break;
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}
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}
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}
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private void PrintHelp()
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{
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System.Console.WriteLine("Commands:");
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System.Console.WriteLine(" [p]ut, [g]et, [d]elete, [f]ind, [l]ist peers, [q]uit");
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System.Console.WriteLine(" [n]ew (auto), [s]pam (5x), [c]ount, [t]odos");
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System.Console.WriteLine(" [h]ealth, cac[h]e");
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System.Console.WriteLine(" [r]esolver [lww|merge], [demo] conflict");
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}
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private async Task HandleInput(string input)
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{
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var config = await _configProvider.GetConfiguration();
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if (input.StartsWith("n"))
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{
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var ts = DateTime.Now.ToString("HH:mm:ss.fff");
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var user = new User { Id = Guid.NewGuid().ToString(), Name = $"User-{ts}", Age = new Random().Next(18, 90), Address = new Address { City = "AutoCity" } };
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await _db.Users.InsertAsync(user);
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await _db.SaveChangesAsync();
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System.Console.WriteLine($"[+] Created {user.Name} with Id: {user.Id}...");
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}
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else if (input.StartsWith("s"))
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{
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for (int i = 0; i < 5; i++)
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{
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var ts = DateTime.Now.ToString("HH:mm:ss.fff");
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var user = new User { Id = Guid.NewGuid().ToString(), Name = $"User-{ts}", Age = new Random().Next(18, 90), Address = new Address { City = "SpamCity" } };
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await _db.Users.InsertAsync(user);
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System.Console.WriteLine($"[+] Created {user.Name} with Id: {user.Id}...");
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await Task.Delay(100);
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}
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await _db.SaveChangesAsync();
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}
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else if (input.StartsWith("c"))
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{
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var userCount = _db.Users.FindAll().Count();
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var todoCount = _db.TodoLists.FindAll().Count();
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System.Console.WriteLine($"Collection 'Users': {userCount} documents");
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System.Console.WriteLine($"Collection 'TodoLists': {todoCount} documents");
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}
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else if (input.StartsWith("p"))
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{
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var alice = new User { Id = Guid.NewGuid().ToString(), Name = "Alice", Age = 30, Address = new Address { City = "Paris" } };
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var bob = new User { Id = Guid.NewGuid().ToString(), Name = "Bob", Age = 25, Address = new Address { City = "Rome" } };
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await _db.Users.InsertAsync(alice);
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await _db.Users.InsertAsync(bob);
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await _db.SaveChangesAsync();
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System.Console.WriteLine($"Put Alice ({alice.Id}) and Bob ({bob.Id})");
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}
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else if (input.StartsWith("g"))
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{
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System.Console.Write("Enter user Id: ");
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var id = System.Console.ReadLine();
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if (!string.IsNullOrEmpty(id))
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{
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var u = _db.Users.FindById(id);
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System.Console.WriteLine(u != null ? $"Got: {u.Name}, Age {u.Age}, City: {u.Address?.City}" : "Not found");
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}
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}
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else if (input.StartsWith("d"))
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{
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System.Console.Write("Enter user Id to delete: ");
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var id = System.Console.ReadLine();
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if (!string.IsNullOrEmpty(id))
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{
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await _db.Users.DeleteAsync(id);
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await _db.SaveChangesAsync();
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System.Console.WriteLine($"Deleted user {id}");
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}
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}
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else if (input.StartsWith("l"))
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{
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var peers = _node.Discovery.GetActivePeers();
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var handshakeSvc = _serviceProvider.GetService<ZB.MOM.WW.CBDDC.Network.Security.IPeerHandshakeService>();
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var secureIcon = handshakeSvc != null ? "🔒" : "🔓";
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System.Console.WriteLine($"Active Peers ({secureIcon}):");
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foreach (var p in peers)
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System.Console.WriteLine($" - {p.NodeId} at {p.Address}");
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if (handshakeSvc != null)
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System.Console.WriteLine("\nℹ️ Secure mode: Connections use ECDH + AES-256");
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}
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else if (input.StartsWith("f"))
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{
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System.Console.WriteLine("Query: Age > 28");
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var results = _db.Users.Find(u => u.Age > 28);
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foreach (var u in results) System.Console.WriteLine($"Found: {u.Name} ({u.Age})");
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}
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else if (input.StartsWith("h"))
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{
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var health = await _healthCheck.CheckAsync();
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var syncStatus = _syncTracker.GetStatus();
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var handshakeSvc = _serviceProvider.GetService<ZB.MOM.WW.CBDDC.Network.Security.IPeerHandshakeService>();
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System.Console.WriteLine("=== Health Check ===");
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System.Console.WriteLine($"Database: {(health.DatabaseHealthy ? "✓" : "✗")}");
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System.Console.WriteLine($"Network: {(health.NetworkHealthy ? "✓" : "✗")}");
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System.Console.WriteLine($"Security: {(handshakeSvc != null ? "🔒 Encrypted" : "🔓 Plaintext")}");
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System.Console.WriteLine($"Connected Peers: {health.ConnectedPeers}");
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System.Console.WriteLine($"Last Sync: {health.LastSyncTime?.ToString("HH:mm:ss") ?? "Never"}");
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System.Console.WriteLine($"Total Synced: {syncStatus.TotalDocumentsSynced} docs");
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if (health.Errors.Any())
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{
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System.Console.WriteLine("Errors:");
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foreach (var err in health.Errors.Take(3)) System.Console.WriteLine($" - {err}");
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}
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}
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else if (input.StartsWith("ch") || input == "cache")
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{
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var stats = _cache.GetStatistics();
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System.Console.WriteLine($"=== Cache Stats ===\nSize: {stats.Size}\nHits: {stats.Hits}\nMisses: {stats.Misses}\nRate: {stats.HitRate:P1}");
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}
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else if (input.StartsWith("r") && input.Contains("resolver"))
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{
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var parts = input.Split(' ');
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if (parts.Length > 1)
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{
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var newResolver = parts[1].ToLower() switch
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{
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"lww" => (IConflictResolver)new LastWriteWinsConflictResolver(),
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"merge" => new RecursiveNodeMergeConflictResolver(),
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_ => null
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};
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if (newResolver != null)
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{
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// Note: Requires restart to fully apply. For demo, we inform user.
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System.Console.WriteLine($"⚠️ Resolver changed to {parts[1].ToUpper()}. Restart node to apply.");
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System.Console.WriteLine($" (Current session continues with previous resolver)");
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}
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else
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{
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System.Console.WriteLine("Usage: resolver [lww|merge]");
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}
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}
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}
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else if (input == "demo")
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{
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await RunConflictDemo();
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}
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else if (input == "todos")
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{
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var lists = _db.TodoLists.FindAll();
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System.Console.WriteLine("=== Todo Lists ===");
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foreach (var list in lists)
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{
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System.Console.WriteLine($"📋 {list.Name} ({list.Items.Count} items)");
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foreach (var item in list.Items)
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{
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var status = item.Completed ? "✓" : " ";
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System.Console.WriteLine($" [{status}] {item.Task}");
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}
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}
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}
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}
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private async Task RunConflictDemo()
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{
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System.Console.WriteLine("\n=== Conflict Resolution Demo ===");
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System.Console.WriteLine("Simulating concurrent edits to a TodoList...\n");
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// Create initial list
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var list = new TodoList
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{
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Id = Guid.NewGuid().ToString(),
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Name = "Shopping List",
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Items = new List<TodoItem>
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{
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new TodoItem { Task = "Buy milk", Completed = false },
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new TodoItem { Task = "Buy bread", Completed = false }
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}
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};
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await _db.TodoLists.InsertAsync(list);
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await _db.SaveChangesAsync();
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System.Console.WriteLine($"✓ Created list '{list.Name}' with {list.Items.Count} items");
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await Task.Delay(100);
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// Simulate Node A edit: Mark item as completed, add new item
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var listA = _db.TodoLists.FindById(list.Id);
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if (listA != null)
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{
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listA.Items[0].Completed = true; // Mark milk as done
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listA.Items.Add(new TodoItem { Task = "Buy eggs", Completed = false });
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await _db.TodoLists.UpdateAsync(listA);
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await _db.SaveChangesAsync();
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System.Console.WriteLine("📝 Node A: Marked 'Buy milk' complete, added 'Buy eggs'");
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}
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await Task.Delay(100);
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// Simulate Node B edit: Mark different item, add different item
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var listB = _db.TodoLists.FindById(list.Id);
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if (listB != null)
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{
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listB.Items[1].Completed = true; // Mark bread as done
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listB.Items.Add(new TodoItem { Task = "Buy cheese", Completed = false });
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await _db.TodoLists.UpdateAsync(listB);
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await _db.SaveChangesAsync();
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System.Console.WriteLine("📝 Node B: Marked 'Buy bread' complete, added 'Buy cheese'");
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}
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await Task.Delay(200);
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// Show final merged state
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var merged = _db.TodoLists.FindById(list.Id);
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if (merged != null)
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{
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System.Console.WriteLine("\n🔀 Merged Result:");
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System.Console.WriteLine($" List: {merged.Name}");
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foreach (var item in merged.Items)
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{
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var status = item.Completed ? "✓" : " ";
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System.Console.WriteLine($" [{status}] {item.Task}");
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}
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var resolver = _serviceProvider.GetRequiredService<IConflictResolver>();
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var resolverType = resolver.GetType().Name;
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System.Console.WriteLine($"\nℹ️ Resolution Strategy: {resolverType}");
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if (resolverType.Contains("Recursive"))
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{
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System.Console.WriteLine(" → Items merged by 'id', both edits preserved");
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}
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else
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{
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System.Console.WriteLine(" → Last write wins, Node B changes override Node A");
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}
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}
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System.Console.WriteLine("\n✓ Demo complete. Run 'todos' to see all lists.\n");
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}
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}
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