Update

Services/Storage/StorageMetaDataRepository.cs

@@ -0,0 +1,93 @@
+
+using MySqlConnector;
+using System.Data;
+
+namespace Pldpro.Web.Services;
+
+public sealed class StorageMetadataRepository : IStorageMetadataRepository
+{
+    private readonly string _connStr;
+    public StorageMetadataRepository(IConfiguration cfg) =>
+        _connStr = cfg.GetConnectionString("StorageDb") ?? throw new InvalidOperationException("ConnectionStrings:StorageDb missing");
+
+    public async Task EnsureSchemaAsync(CancellationToken ct = default)
+    {
+        const string sql = """
+        CREATE TABLE IF NOT EXISTS storage_objects (
+            id BIGINT NOT NULL AUTO_INCREMENT,
+            bucket VARCHAR(63) NOT NULL,
+            file_name VARCHAR(255) NOT NULL,
+            path VARCHAR(768) NULL,
+            s3_key VARCHAR(1024) NOT NULL,
+            size BIGINT NULL,
+            content_type VARCHAR(255) NULL,
+            created_utc DATETIME(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6),
+            PRIMARY KEY (id),
+            UNIQUE KEY uq_bucket_file (bucket, file_name),
+            INDEX ix_bucket_path (bucket, path(255))
+        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+        """;
+
+        await using var conn = new MySqlConnection(_connStr);
+        await conn.OpenAsync(ct);
+        await using var cmd = new MySqlCommand(sql, conn);
+        await cmd.ExecuteNonQueryAsync(ct);
+    }
+
+    public async Task UpsertAsync(string bucket, string fileName, string? path, string key, long? size, string? contentType, CancellationToken ct = default)
+    {
+        const string sql = """
+        INSERT INTO storage_objects (bucket, file_name, path, s3_key, size, content_type)
+        VALUES (@bucket, @name, @path, @key, @size, @ct)
+        ON DUPLICATE KEY UPDATE
+            path = VALUES(path),
+            s3_key = VALUES(s3_key),
+            size = VALUES(size),
+            content_type = VALUES(content_type);
+        """;
+
+        await using var conn = new MySqlConnection(_connStr);
+        await conn.OpenAsync(ct);
+        await using var cmd = new MySqlCommand(sql, conn);
+        cmd.Parameters.AddWithValue("@bucket", bucket);
+        cmd.Parameters.AddWithValue("@name", fileName);
+        cmd.Parameters.AddWithValue("@path", (object?)path ?? DBNull.Value);
+        cmd.Parameters.AddWithValue("@key", key);
+        cmd.Parameters.AddWithValue("@size", (object?)size ?? DBNull.Value);
+        cmd.Parameters.AddWithValue("@ct", (object?)contentType ?? DBNull.Value);
+        await cmd.ExecuteNonQueryAsync(ct);
+    }
+
+    public async Task<StorageObject?> TryGetAsync(string bucket, string fileName, CancellationToken ct = default)
+    {
+        const string sql = """
+        SELECT id, bucket, file_name, path, s3_key, size, content_type, created_utc
+        FROM storage_objects
+        WHERE bucket = @bucket AND file_name = @name
+        LIMIT 1;
+        """;
+
+        await using var conn = new MySqlConnection(_connStr);
+        await conn.OpenAsync(ct);
+
+        await using var cmd = new MySqlCommand(sql, conn);
+        cmd.Parameters.AddWithValue("@bucket", bucket);
+        cmd.Parameters.AddWithValue("@name", fileName);
+
+        await using var reader = await cmd.ExecuteReaderAsync(CommandBehavior.SingleRow, ct);
+        if (await reader.ReadAsync(ct))
+        {
+            return new StorageObject(
+                reader.GetInt64(0),
+                reader.GetString(1),
+                reader.GetString(2),
+                reader.IsDBNull(3) ? null : reader.GetString(3),
+                reader.GetString(4),
+                reader.IsDBNull(5) ? null : reader.GetInt64(5),
+                reader.IsDBNull(6) ? null : reader.GetString(6),
+                reader.GetDateTime(7)
+            );
+        }
+        return null;
+    }
+}