Joseph Doherty
29 lines
1.4 KiB
C#
29 lines
1.4 KiB
C#
using ZB.MOM.WW.Configuration;
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namespace ZB.MOM.WW.ScadaBridge.Host;
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/// <summary>
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/// Validates <see cref="DatabaseOptions"/> at host startup (arch-review 08
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/// round 2 NF4). All three connection settings are nullable and role-dependent
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/// (central needs the SQL Server strings, a site needs only the SQLite path),
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/// so a <c>null</c> value is valid. A present-but-whitespace value is not — it
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/// signals a mis-set config key that would fail opaquely at first DB use.
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/// </summary>
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public sealed class DatabaseOptionsValidator : OptionsValidatorBase<DatabaseOptions>
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{
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/// <inheritdoc />
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protected override void Validate(ValidationBuilder builder, DatabaseOptions options)
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{
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RequireNotWhitespace(builder, options.ConfigurationDb, nameof(DatabaseOptions.ConfigurationDb));
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RequireNotWhitespace(builder, options.MachineDataDb, nameof(DatabaseOptions.MachineDataDb));
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RequireNotWhitespace(builder, options.SiteDbPath, nameof(DatabaseOptions.SiteDbPath));
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}
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// null is valid (role-dependent); reject only a present-but-blank value.
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private static void RequireNotWhitespace(ValidationBuilder builder, string? value, string field)
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{
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builder.RequireThat(value is null || !string.IsNullOrWhiteSpace(value),
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$"ScadaBridge:Database:{field} is set but blank — either remove it or give it a real value.");
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}
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}
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