chore(db): cut over backend to PostgreSQL-only and remove SQL Server artifacts

Author: Diogo-Ferraz

.env.example

@@ -1,9 +1,7 @@
 # Required in base compose
-SQL_PASSWORD=ChangeMe_SqlServer!
 POSTGRES_DB=taskmanagement
 POSTGRES_USER=postgres
 POSTGRES_PASSWORD=postgres
-DATABASE_PROVIDER=SqlServer
 
 # Development defaults used by docker-compose.override.yml
 OPENIDDICT_ENCRYPTION_KEY=DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=

README.md

@@ -17,7 +17,7 @@ flowchart LR
     SPA["TaskManagementClient (Angular SPA)"] -->|"HTTPS"| Caddy["Caddy Reverse Proxy"]
     Caddy -->|"HTTPS"| Auth["Auth Service<br/>OpenIddict + Identity"]
     Caddy -->|"HTTPS"| Api["API Service<br/>Projects + TaskItems + Activity"]
-    Auth --> Db[("SQL Server / PostgreSQL")]
+    Auth --> Db[("PostgreSQL")]
     Api --> Db
 ```
 
@@ -123,7 +123,7 @@ Benefits:
 ## Tech Stack
 
 - ASP.NET Core (.NET 8)
-- EF Core (SQL Server + PostgreSQL)
+- EF Core (PostgreSQL)
 - MediatR
 - FluentValidation
 - AutoMapper
@@ -148,12 +148,8 @@ Benefits:
 - SignalR real-time activity events
 - Unit and integration tests
 
-### `SQL Server`
-- Shared persistence for Auth and API domains
-
 ### `PostgreSQL`
-- Alternative shared persistence for Auth and API domains
-- Can run side-by-side with SQL Server during migration
+- Shared persistence for Auth and API domains
 
 ### `Caddy`
 - Local HTTPS termination
@@ -173,27 +169,12 @@ Benefits:
 ### Optional environment setup
 You can copy `.env.example` to `.env` and adjust values if needed.
 
-Database selection:
-- `DATABASE_PROVIDER=SqlServer` (default, current baseline)
-- `DATABASE_PROVIDER=Postgres` (PostgreSQL runtime mode)
-
 ### Run
 ```bash
 docker compose up --build
 ```
 
-This starts SQL Server, PostgreSQL, Auth, API, and Caddy with local HTTPS routing.
-Only the provider selected by `DATABASE_PROVIDER` is used by Auth/API at runtime.
-
-Examples:
-
-```bash
-# default (SQL Server)
-DATABASE_PROVIDER=SqlServer docker compose up --build
-
-# PostgreSQL mode
-DATABASE_PROVIDER=Postgres docker compose up --build
-```
+This starts PostgreSQL, Auth, API, and Caddy with local HTTPS routing.
 
 ---
 

docker-compose.override.yml

@@ -1,24 +1,13 @@
-version: '3.8'
-
 services:
   postgres:
     ports:
       - "5432:5432"
 
-  sqlserver:
-    environment:
-      - SQL_PASSWORD=${SQL_PASSWORD:-Passw0rd!1234}
-      - MSSQL_SA_PASSWORD=${SQL_PASSWORD:-Passw0rd!1234}
-    ports:
-      - "1433:1433"
-
   auth-service:
     environment:
-      - DatabaseProvider=${DATABASE_PROVIDER:-SqlServer}
       - ASPNETCORE_ENVIRONMENT=Development
       - ASPNETCORE_URLS=http://+:8080
-      - ConnectionStrings__TaskManagementDbConnection=Server=sqlserver,1433;Database=TaskManagementDb;User Id=sa;Password=${SQL_PASSWORD:-Passw0rd!1234};TrustServerCertificate=True;
-      - ConnectionStrings__TaskManagementDbConnectionPostgres=Host=postgres;Port=5432;Database=${POSTGRES_DB:-taskmanagement};Username=${POSTGRES_USER:-postgres};Password=${POSTGRES_PASSWORD:-postgres};
+      - ConnectionStrings__TaskManagementDbConnection=Host=postgres;Port=5432;Database=${POSTGRES_DB:-taskmanagement};Username=${POSTGRES_USER:-postgres};Password=${POSTGRES_PASSWORD:-postgres};
       - OpenIddict__Issuer=https://auth.localhost
       - OpenIddict__Audience=task_management_api_dev
       - OpenIddict__EncryptionKey=${OPENIDDICT_ENCRYPTION_KEY:-DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=}
@@ -49,11 +38,9 @@ services:
     extra_hosts:
       - "auth.localhost:host-gateway"
     environment:
-      - DatabaseProvider=${DATABASE_PROVIDER:-SqlServer}
       - ASPNETCORE_ENVIRONMENT=Development
       - ASPNETCORE_URLS=http://+:8080
-      - ConnectionStrings__TaskManagementDbConnection=Server=sqlserver,1433;Database=TaskManagementDb;User Id=sa;Password=${SQL_PASSWORD:-Passw0rd!1234};TrustServerCertificate=True;
-      - ConnectionStrings__TaskManagementDbConnectionPostgres=Host=postgres;Port=5432;Database=${POSTGRES_DB:-taskmanagement};Username=${POSTGRES_USER:-postgres};Password=${POSTGRES_PASSWORD:-postgres};
+      - ConnectionStrings__TaskManagementDbConnection=Host=postgres;Port=5432;Database=${POSTGRES_DB:-taskmanagement};Username=${POSTGRES_USER:-postgres};Password=${POSTGRES_PASSWORD:-postgres};
       - OpenIddict__Issuer=https://auth.localhost
       - OpenIddict__Audience=task_management_api_dev
       - OpenIddict__EncryptionKey=${OPENIDDICT_ENCRYPTION_KEY:-DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=}

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   postgres:
     image: postgres:16-alpine
@@ -19,24 +17,6 @@ services:
       timeout: 3s
     restart: unless-stopped
 
-  sqlserver:
-    image: mcr.microsoft.com/mssql/server:2022-latest
-    environment:
-      - ACCEPT_EULA=Y
-      - MSSQL_PID=Developer
-      - MSSQL_SA_PASSWORD=${SQL_PASSWORD}
-    volumes:
-      - sqlserver-data:/var/opt/mssql
-    networks:
-      - taskmanagement-network
-    healthcheck:
-      test: /opt/mssql-tools18/bin/sqlcmd -C -S localhost -U sa -P "$$MSSQL_SA_PASSWORD" -Q "SELECT 1" || exit 1
-      interval: 10s
-      retries: 10
-      start_period: 10s
-      timeout: 3s
-    restart: unless-stopped
-
   caddy:
     container_name: caddy-prox
     image: caddy:2-alpine
@@ -61,7 +41,7 @@ services:
       args:
         - BUILD_CONFIGURATION=${BUILD_CONFIGURATION:-Release}
     depends_on:
-      sqlserver:
+      postgres:
         condition: service_healthy
     networks:
       - taskmanagement-network
@@ -80,7 +60,7 @@ services:
       args:
         - BUILD_CONFIGURATION=${BUILD_CONFIGURATION:-Release}
     depends_on:
-      sqlserver:
+      postgres:
         condition: service_healthy
       auth-service:
         condition: service_healthy
@@ -100,7 +80,6 @@ networks:
 
 volumes:
   postgres-data:
-  sqlserver-data:
   caddy_data:
   caddy_config:
     driver: local

src/TaskManagement.Api/Infrastructure/Persistence/Configuration/DatabaseConfiguration.cs

@@ -7,53 +7,27 @@ public static class DatabaseConfiguration
     {
         public static IServiceCollection AddDatabaseConfiguration(this IServiceCollection services, IConfiguration configuration)
         {
-            var databaseProvider = configuration["DatabaseProvider"] ?? "SqlServer";
-            var sqlServerConnectionString = configuration.GetConnectionString("TaskManagementDbConnection");
-            var postgresConnectionString = configuration.GetConnectionString("TaskManagementDbConnectionPostgres");
-
-            if (IsPostgres(databaseProvider))
-            {
-                if (string.IsNullOrWhiteSpace(postgresConnectionString))
-                {
-                    throw new InvalidOperationException("Connection string 'TaskManagementDbConnectionPostgres' not found.");
-                }
-
-                services.AddDbContext<TaskManagementDbContextPostgres>(options =>
-                {
-                    options.UseNpgsql(postgresConnectionString,
-                        npgsqlOptions => npgsqlOptions.EnableRetryOnFailure(
-                            maxRetryCount: 5,
-                            maxRetryDelay: TimeSpan.FromSeconds(10),
-                            errorCodesToAdd: null));
-                });
-
-                services.AddScoped<TaskManagementDbContext>(sp =>
-                    sp.GetRequiredService<TaskManagementDbContextPostgres>());
-                return services;
-            }
-
-            if (string.IsNullOrWhiteSpace(sqlServerConnectionString))
+            var connectionString = configuration.GetConnectionString("TaskManagementDbConnection");
+            if (string.IsNullOrWhiteSpace(connectionString))
             {
                 throw new InvalidOperationException("Connection string 'TaskManagementDbConnection' not found.");
             }
 
-            services.AddDbContext<TaskManagementDbContext>(options =>
+            services.AddDbContext<TaskManagementDbContextPostgres>(options =>
             {
-                options.UseSqlServer(sqlServerConnectionString,
-                    sqlServerOptions => sqlServerOptions.EnableRetryOnFailure(
+                options.UseNpgsql(connectionString,
+                    npgsqlOptions => npgsqlOptions.EnableRetryOnFailure(
                         maxRetryCount: 5,
                         maxRetryDelay: TimeSpan.FromSeconds(10),
-                        errorNumbersToAdd: null));
+                        errorCodesToAdd: null));
             });
 
+            services.AddScoped<TaskManagementDbContext>(sp =>
+                sp.GetRequiredService<TaskManagementDbContextPostgres>());
+
             return services;
         }
 
-        private static bool IsPostgres(string provider)
-            => provider.Equals("postgres", StringComparison.OrdinalIgnoreCase)
-               || provider.Equals("postgresql", StringComparison.OrdinalIgnoreCase)
-               || provider.Equals("npgsql", StringComparison.OrdinalIgnoreCase);
-
         public static async Task ApplyMigrationsAsync(this WebApplication app)
         {
             using var scope = app.Services.CreateScope();

src/TaskManagement.Api/Infrastructure/Persistence/DesignTime/TaskManagementDbContextPostgresFactory.cs

@@ -8,7 +8,8 @@ public sealed class TaskManagementDbContextPostgresFactory : IDesignTimeDbContex
         public TaskManagementDbContextPostgres CreateDbContext(string[] args)
         {
             var connectionString =
-                Environment.GetEnvironmentVariable("ConnectionStrings__TaskManagementDbConnectionPostgres")
+                Environment.GetEnvironmentVariable("ConnectionStrings__TaskManagementDbConnection")
+                ?? Environment.GetEnvironmentVariable("ConnectionStrings__TaskManagementDbConnectionPostgres")
                 ?? "Host=localhost;Port=5432;Database=TaskManagementDb;Username=postgres;Password=postgres";
 
             var optionsBuilder = new DbContextOptionsBuilder<TaskManagementDbContextPostgres>();