Files
ScadaBridge/src/ZB.MOM.WW.ScadaBridge.Commons/Messages/Management/ManagementCommandRegistry.cs
T
Joseph Doherty 63c16d6912 refactor(comm): retire ClusterClient naming after the gRPC cutover
Phase 4 of the ClusterClient -> gRPC migration deleted the Akka transports
but left the naming behind: `ClusterClientSiteAuditClient` was transport-
agnostic and worked unchanged, so it survived the deletion under a name
that now describes a transport the repo no longer has. Same for a scatter
of doc-comments still framing gRPC as "the new transport" beside an Akka
one that is gone.

Renames it to `SiteCommunicationAuditClient` (and its test file) and
rewrites the stale comments to describe the single transport that exists.
Also tightens CLAUDE.md: drops the self-describing directory listing and
the 27-component enumeration in favour of the non-obvious parts only.

Behaviour-neutral: names and prose only. Recorded as the Phase 4
follow-up in docs/plans/2026-07-22-clusterclient-to-grpc-plan.md.
2026-07-27 15:40:01 -04:00

79 lines
3.4 KiB
C#

using System.Collections.Frozen;
namespace ZB.MOM.WW.ScadaBridge.Commons.Messages.Management;
/// <summary>
/// Bidirectional name registry for management command records. The registry contains
/// exactly the non-abstract <c>*Command</c> types declared in the
/// <c>ZB.MOM.WW.ScadaBridge.Commons.Messages.Management</c> namespace; these are the commands that
/// travel over the HTTP management boundary.
/// </summary>
/// <remarks>
/// <see cref="Resolve"/> and <see cref="GetCommandName"/> are symmetric:
/// <c>Resolve(GetCommandName(t))</c> returns <c>t</c> for every type
/// <see cref="GetCommandName"/> accepts. <see cref="GetCommandName"/> rejects any type
/// the registry does not contain rather than computing an unresolvable name.
/// </remarks>
public static class ManagementCommandRegistry
{
private static readonly FrozenDictionary<string, Type> Commands = BuildRegistry();
/// <summary>
/// Names keyed by command type, for the reverse lookup. Keeps
/// <see cref="GetCommandName"/> in lock-step with the forward registry.
/// </summary>
private static readonly FrozenDictionary<Type, string> NamesByType =
Commands.ToFrozenDictionary(kv => kv.Value, kv => kv.Key);
/// <summary>
/// Resolves a management command wire name to its CLR type, or null if not registered.
/// </summary>
/// <param name="commandName">The wire name of the management command (without the "Command" suffix).</param>
/// <returns>The CLR <see cref="Type"/> for the command, or <c>null</c> if not registered.</returns>
public static Type? Resolve(string commandName)
{
return Commands.GetValueOrDefault(commandName);
}
/// <summary>
/// Returns the registered wire name for a management command type.
/// </summary>
/// <param name="commandType">The CLR type of the management command to look up.</param>
/// <exception cref="ArgumentException">
/// Thrown when <paramref name="commandType"/> is not a registered management
/// command — i.e. not a non-abstract <c>*Command</c> type in the
/// <c>ZB.MOM.WW.ScadaBridge.Commons.Messages.Management</c> namespace. This keeps the method
/// symmetric with <see cref="Resolve"/>: it never yields a name that
/// <see cref="Resolve"/> cannot turn back into the same type.
/// </exception>
/// <returns>The registered wire name for <paramref name="commandType"/>.</returns>
public static string GetCommandName(Type commandType)
{
ArgumentNullException.ThrowIfNull(commandType);
if (NamesByType.TryGetValue(commandType, out var name))
return name;
throw new ArgumentException(
$"'{commandType.FullName}' is not a registered management command. " +
$"Management commands must be non-abstract '*Command' records declared in " +
$"the '{typeof(ManagementEnvelope).Namespace}' namespace.",
nameof(commandType));
}
private static FrozenDictionary<string, Type> BuildRegistry()
{
var ns = typeof(ManagementEnvelope).Namespace!;
var assembly = typeof(ManagementEnvelope).Assembly;
return assembly.GetTypes()
.Where(t => t.Namespace == ns
&& t.Name.EndsWith("Command", StringComparison.Ordinal)
&& !t.IsAbstract)
.ToFrozenDictionary(
t => t.Name[..^"Command".Length],
t => t,
StringComparer.OrdinalIgnoreCase);
}
}