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Add SSL, MDC database, and custom HANA connection parameters

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Fixes 'error while parsing protocol' HanaException by supporting
SSL/TLS encryption, Multi-Tenant Database Container (MDC) database
name, and arbitrary additional connection parameters.

- HanaServer model: added DatabaseName, UseSsl, ValidateCertificate,
  AdditionalParams fields + BuildConnectionString() helper
- HanaQueryService: accepts HanaServer directly, uses
  BuildConnectionString() for full parameter support
- AppDbContext: added EnsureSchema() method that uses PRAGMA table_info
  + ALTER TABLE ADD COLUMN to add the new fields to existing SQLite
  databases without losing data (EnsureCreated does not update schema)
- Program.cs: calls EnsureSchema on startup before seeding
- Standorte.razor: server dialog now exposes DatabaseName, UseSsl,
  ValidateCertificate, AdditionalParams with helper texts; test
  connection uses new signature

https://claude.ai/code/session_012heAXNMbbyxqYf2S2HrKLj
This commit is contained in:
Claude
2026-04-13 08:52:10 +00:00
parent f916c26fb4
commit efcf7b180c
6 changed files with 113 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
TrafagSalesExporter/Components/Pages/Standorte.razor
+21 -4
View File
@@ -93,10 +93,19 @@
</TitleContent>
<DialogContent>
<MudTextField @bind-Value="_editingServer.Name" Label="Name" Required />
<MudTextField @bind-Value="_editingServer.Host" Label="Host" Required />
<MudNumericField @bind-Value="_editingServer.Port" Label="Port" />
<MudTextField @bind-Value="_editingServer.Host" Label="Host" Required
HelperText="IP oder Hostname (ohne Protokoll)" />
<MudNumericField @bind-Value="_editingServer.Port" Label="Port"
HelperText="Typisch 30015 (Tenant), 30013 (SystemDB), 3xx15 für Instanz xx" />
<MudTextField @bind-Value="_editingServer.Username" Label="Username" />
<MudTextField @bind-Value="_editingServer.Password" Label="Password" InputType="InputType.Password" />
<MudTextField @bind-Value="_editingServer.DatabaseName" Label="Database Name (MDC)"
HelperText="Nur bei Multi-Tenant Setup angeben, sonst leer lassen" />
<MudSwitch @bind-Value="_editingServer.UseSsl" Label="SSL/TLS verwenden (encrypt=true)" Color="Color.Primary" />
<MudSwitch @bind-Value="_editingServer.ValidateCertificate" Label="SSL-Zertifikat validieren" Color="Color.Primary"
Disabled="!_editingServer.UseSsl" />
<MudTextField @bind-Value="_editingServer.AdditionalParams" Label="Zusätzliche Parameter"
HelperText="Optional, z.B. sslCryptoProvider=openssl;communicationTimeout=0" />
</DialogContent>
<DialogActions>
<MudButton OnClick="() => _serverDialogVisible = false">Abbrechen</MudButton>
@@ -164,7 +173,11 @@
Host = server.Host,
Port = server.Port,
Username = server.Username,
Password = server.Password
Password = server.Password,
DatabaseName = server.DatabaseName,
UseSsl = server.UseSsl,
ValidateCertificate = server.ValidateCertificate,
AdditionalParams = server.AdditionalParams
};
_serverDialogVisible = true;
}
@@ -186,6 +199,10 @@
existing.Port = _editingServer.Port;
existing.Username = _editingServer.Username;
existing.Password = _editingServer.Password;
existing.DatabaseName = _editingServer.DatabaseName;
existing.UseSsl = _editingServer.UseSsl;
existing.ValidateCertificate = _editingServer.ValidateCertificate;
existing.AdditionalParams = _editingServer.AdditionalParams;
}
}
await db.SaveChangesAsync();
@@ -218,7 +235,7 @@
{
try
{
await Task.Run(() => HanaService.TestConnection(server.Host, server.Port, server.Username, server.Password));
await Task.Run(() => HanaService.TestConnection(server));
Snackbar.Add($"Verbindung zu '{server.Name}' erfolgreich!", Severity.Success);
}
catch (Exception ex)
TrafagSalesExporter/Data/AppDbContext.cs
+41
View File
@@ -1,3 +1,4 @@
using System.Data;
using Microsoft.EntityFrameworkCore;
using TrafagSalesExporter.Models;
@@ -13,6 +14,46 @@ public class AppDbContext : DbContext
public DbSet<ExportSettings> ExportSettings => Set<ExportSettings>();
public DbSet<ExportLog> ExportLogs => Set<ExportLog>();
/// <summary>
/// Fügt Spalten zu existierenden Tabellen hinzu, die bei neueren Versionen
/// hinzugekommen sind. EnsureCreated aktualisiert das Schema nicht automatisch.
/// </summary>
public static void EnsureSchema(AppDbContext db)
{
AddColumnIfMissing(db, "HanaServers", "DatabaseName", "TEXT NOT NULL DEFAULT ''");
AddColumnIfMissing(db, "HanaServers", "UseSsl", "INTEGER NOT NULL DEFAULT 0");
AddColumnIfMissing(db, "HanaServers", "ValidateCertificate", "INTEGER NOT NULL DEFAULT 0");
AddColumnIfMissing(db, "HanaServers", "AdditionalParams", "TEXT NOT NULL DEFAULT ''");
}
private static void AddColumnIfMissing(AppDbContext db, string table, string column, string type)
{
var conn = db.Database.GetDbConnection();
if (conn.State != ConnectionState.Open) conn.Open();
bool exists = false;
using (var cmd = conn.CreateCommand())
{
cmd.CommandText = $"PRAGMA table_info({table})";
using var reader = cmd.ExecuteReader();
while (reader.Read())
{
if (string.Equals(reader["name"]?.ToString(), column, StringComparison.OrdinalIgnoreCase))
{
exists = true;
break;
}
}
}
if (!exists)
{
using var alter = conn.CreateCommand();
alter.CommandText = $"ALTER TABLE {table} ADD COLUMN {column} {type}";
alter.ExecuteNonQuery();
}
}
public static void SeedIfEmpty(AppDbContext db)
{
if (db.HanaServers.Any()) return;
TrafagSalesExporter/Models/HanaServer.cs
+45
View File
@@ -17,4 +17,49 @@ public class HanaServer
public string Username { get; set; } = string.Empty;
public string Password { get; set; } = string.Empty;
/// <summary>
/// Name der Tenant-Datenbank bei Multi-Tenant Database Container (MDC) Setups.
/// Leer lassen, wenn direkt auf einen Tenant-Port verbunden wird.
/// </summary>
public string DatabaseName { get; set; } = string.Empty;
/// <summary>
/// SSL/TLS Verschlüsselung aktivieren (encrypt=true).
/// </summary>
public bool UseSsl { get; set; }
/// <summary>
/// SSL-Zertifikat validieren. Bei self-signed Zertifikaten auf false setzen.
/// </summary>
public bool ValidateCertificate { get; set; }
/// <summary>
/// Zusätzliche Verbindungsparameter (Semikolon-getrennt), z.B. "sslCryptoProvider=openssl".
/// </summary>
public string AdditionalParams { get; set; } = string.Empty;
public string BuildConnectionString()
{
var parts = new List<string>
{
$"ServerNode={Host}:{Port}",
$"UserName={Username}",
$"Password={Password}"
};
if (!string.IsNullOrWhiteSpace(DatabaseName))
parts.Add($"DatabaseName={DatabaseName}");
if (UseSsl)
{
parts.Add("encrypt=true");
parts.Add($"sslValidateCertificate={(ValidateCertificate ? "true" : "false")}");
}
if (!string.IsNullOrWhiteSpace(AdditionalParams))
parts.Add(AdditionalParams.Trim().Trim(';'));
return string.Join(";", parts);
}
}
TrafagSalesExporter/Program.cs
+1
View File
@@ -27,6 +27,7 @@ using (var scope = app.Services.CreateScope())
var dbFactory = scope.ServiceProvider.GetRequiredService<IDbContextFactory<AppDbContext>>();
using var db = await dbFactory.CreateDbContextAsync();
await db.Database.EnsureCreatedAsync();
AppDbContext.EnsureSchema(db);
AppDbContext.SeedIfEmpty(db);
}
TrafagSalesExporter/Services/ExportOrchestrationService.cs
+1 -3
View File
@@ -94,9 +94,7 @@ public class ExportOrchestrationService
UpdateStatus(site.Id, "HANA Abfrage...");
var records = await Task.Run(() => _hanaService.GetSalesRecords(
site.HanaServer.Host, site.HanaServer.Port,
site.HanaServer.Username, site.HanaServer.Password,
site.Schema, site.TSC, site.Land, settings.DateFilter));
site.HanaServer, site.Schema, site.TSC, site.Land, settings.DateFilter));
UpdateStatus(site.Id, "Excel erstellen...");
var outputDir = Path.Combine(AppContext.BaseDirectory, "output");
TrafagSalesExporter/Services/HanaQueryService.cs
+4 -4
View File
@@ -5,10 +5,10 @@ namespace TrafagSalesExporter.Services;
public class HanaQueryService
{
public List<SalesRecord> GetSalesRecords(string host, int port, string username, string password,
public List<SalesRecord> GetSalesRecords(HanaServer server,
string schema, string tsc, string land, string dateFilter)
{
var connectionString = $"ServerNode={host}:{port};UserName={username};Password={password}";
var connectionString = server.BuildConnectionString();
var result = new List<SalesRecord>();
using var connection = new HanaConnection(connectionString);
@@ -32,9 +32,9 @@ public class HanaQueryService
return result;
}
public void TestConnection(string host, int port, string username, string password)
public void TestConnection(HanaServer server)
{
var connectionString = $"ServerNode={host}:{port};UserName={username};Password={password}";
var connectionString = server.BuildConnectionString();
using var connection = new HanaConnection(connectionString);
connection.Open();
}