woohoo

BlazorCanvas/BlazorCanvas.AppHost/Properties/launchSettings.json

@@ -1,16 +1,16 @@
 {
-  "$schema": "http://json.schemastore.org/launchsettings.json",
   "profiles": {
     "http": {
       "commandName": "Project",
-      "dotnetRunMessages": true,
       "launchBrowser": true,
-      "applicationUrl": "http://localhost:15071",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development",
         "DOTNET_ENVIRONMENT": "Development",
         "DOTNET_DASHBOARD_OTLP_ENDPOINT_URL": "http://localhost:16047"
-      }
+      },
+      "dotnetRunMessages": true,
+      "applicationUrl": "http://localhost:15071"
     }
-  }
-}
+  },
+  "$schema": "http://json.schemastore.org/launchsettings.json"
+}

BlazorCanvas/BlazorCanvas.Server/BlazorCanvas.Server.csproj

@@ -7,6 +7,7 @@
     <UserSecretsId>ffc728b4-a681-4404-8156-a09f59c957d3</UserSecretsId>
     <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
     <DockerfileContext>..\..</DockerfileContext>
+    <DockerComposeProjectPath>..\..\docker-compose.dcproj</DockerComposeProjectPath>
   </PropertyGroup>
 
   <ItemGroup>

BlazorCanvas/BlazorCanvas.Server/Components/Data/RedisService.cs

@@ -1,17 +1,79 @@
 using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
 using StackExchange.Redis;
+using System;
+using System.Reflection.Metadata.Ecma335;
 
 namespace BlazorCanvas.Server.Components.Data;
 
 // https://developer.redis.com/develop/dotnet/streams/stream-basics/
 
-public class RedisService: IRedisService {
+public class RedisService : IRedisService {
+    const string STREAM_NAME = "steamie",
+                 GROUP_NAME = "groupie",
+                 SUB_NAME = "servant";
+
+    private NameValueEntry[] arnve = new NameValueEntry[1];
+
     private IConnectionMultiplexer _cache;
+    private IDatabase _database;
     private ChannelMessageQueue _channel;
 
-    public RedisService(IConnectionMultiplexer cache) {
-        _cache = cache;
-        _channel = _cache.GetSubscriber().Subscribe(RedisChannel.Literal("lol"));
+    public RedisService(IConnectionMultiplexer cache) { _cache = cache; }
+
+    /// <summary>
+    /// Init Pub/Sub - Redis en mode Pub/Sub ne garde pas ses messages en mémoire,
+    /// donc les commandes faites avant la souscription ne sont pas copiées.
+    /// </summary>
+    /// <returns>Si la connexion a réussi.</returns>
+    public bool InitSubscriber() {
+        try {
+            _channel = _cache.GetSubscriber().Subscribe(RedisChannel.Literal(SUB_NAME));
+        } catch (Exception ex) {
+            Console.WriteLine(ex);
+            return false;
+        }
+        return true;
+    }
+
+    /// <summary>
+    /// Init Streamer - Devrait être plus près de Kafka comme comportement.
+    /// </summary>
+    /// <returns>Si la connexion a réussi.</returns>
+    public async Task<bool> InitStreamer() {
+        try {
+            _database = _cache.GetDatabase();
+            if (!(await _database.KeyExistsAsync(STREAM_NAME)) ||
+                 (await _database.StreamGroupInfoAsync(STREAM_NAME)).All(x => x.Name != GROUP_NAME)) {
+                await _database.StreamCreateConsumerGroupAsync(STREAM_NAME, GROUP_NAME, "0-0", true);
+            }
+        } catch (Exception ex) {
+            Console.WriteLine(ex);
+            return false;
+        }
+        return true;
+    }
+
+    public async void Produce(CanvasCommand command) {
+        arnve[0] = new NameValueEntry("command", JsonConvert.SerializeObject(command));
+        await _database.StreamAddAsync(STREAM_NAME, arnve);
+    }
+
+    public async Task<IEnumerable<CanvasCommand>> Consume() {
+        List<CanvasCommand> lsComm = new();
+        CanvasCommand? comm;
+        var result = await _database.StreamReadGroupAsync(STREAM_NAME, GROUP_NAME, "commCon", ">");
+
+        foreach (var c in result) {
+            await _database.StreamAcknowledgeAsync(STREAM_NAME, GROUP_NAME, c.Id);
+            try {
+                string json = c.Values.FirstOrDefault(x => x.Name == "command").Value.ToString();
+                comm = JsonConvert.DeserializeObject<CanvasCommand>(json);
+            } catch { continue; }
+            if (comm is not null)
+                lsComm.Add(comm);
+        }
+        return lsComm;
     }
 
     /// <summary>
@@ -20,10 +82,13 @@ public class RedisService: IRedisService {
     /// </summary>
     public async Task<CanvasCommand?> Subscribe(CancellationToken cToken) {
         var mess = await _channel.ReadAsync(cToken);
-        var comm = JsonConvert.DeserializeObject<CanvasCommand>(mess.Message);
+        CanvasCommand? comm;
+        try {
+            comm = JsonConvert.DeserializeObject<CanvasCommand>(mess.Message);
+        } catch { return null; }
         if (comm is not null)
             return comm;
-        else return null;
+        return null;
     }
 
     /// <summary>
@@ -32,7 +97,6 @@ public class RedisService: IRedisService {
     /// </summary>
     /// <param name="command">La commande à publier</param>
     public async void Publish(CanvasCommand command) {
-        CanvasCommand cm = new(command);
-        await _cache.GetSubscriber().PublishAsync(_channel.Channel, JsonConvert.SerializeObject(cm));
+        await _cache.GetSubscriber().PublishAsync(_channel.Channel, JsonConvert.SerializeObject(command));
     }
 }

BlazorCanvas/BlazorCanvas.Server/appsettings.json

@@ -5,5 +5,8 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "ConnectionStrings": {
+    "cache": "host.docker.internal"
+  }
 }