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lmxopcua/src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli/Commands/ReadCommand.cs
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Joseph Doherty 64e3fbe035
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docs: backfill XML documentation across 756 files
Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.
2026-05-28 08:10:17 -04:00

72 lines
3.0 KiB
C#

using CliFx.Attributes;
using CliFx.Infrastructure;
using ZB.MOM.WW.OtOpcUa.Driver.Cli.Common;
namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.Cli.Commands;
/// <summary>
/// Read one Logix tag by symbolic path. Operator specifies <c>--tag</c> + <c>--type</c>;
/// the CLI synthesises a one-tag driver config, reads once, prints the snapshot, shuts
/// down. UDT / Structure reads are out of scope here — those need the member layout
/// declared, which belongs in a real driver config.
/// </summary>
[Command("read", Description = "Read a single Logix tag by symbolic path.")]
public sealed class ReadCommand : AbCipCommandBase
{
/// <summary>Gets the tag path to read.</summary>
[CommandOption("tag", 't', Description =
"Logix symbolic path. Controller scope: 'Motor01_Speed'. Program scope: " +
"'Program:Main.Motor01_Speed'. Array element: 'Recipe[3]'. UDT member: " +
"'Motor01.Speed'.", IsRequired = true)]
public string TagPath { get; init; } = default!;
/// <summary>Gets the data type to read as.</summary>
[CommandOption("type", Description =
"Bool / SInt / Int / DInt / LInt / USInt / UInt / UDInt / ULInt / Real / LReal / " +
"String / Dt / Structure (default DInt).")]
public AbCipDataType DataType { get; init; } = AbCipDataType.DInt;
/// <summary>Executes the read operation.</summary>
/// <param name="console">The console for output and cancellation handling.</param>
/// <inheritdoc />
public override async ValueTask ExecuteAsync(IConsole console)
{
ConfigureLogging();
RejectStructure(DataType);
var ct = console.RegisterCancellationHandler();
var tagName = SynthesiseTagName(TagPath, DataType);
var tag = new AbCipTagDefinition(
Name: tagName,
DeviceHostAddress: Gateway,
TagPath: TagPath,
DataType: DataType,
Writable: false);
var options = BuildOptions([tag]);
await using var driver = new AbCipDriver(options, DriverInstanceId);
try
{
await driver.InitializeAsync("{}", ct);
var snapshot = await driver.ReadAsync([tagName], ct);
await console.Output.WriteLineAsync(SnapshotFormatter.Format(TagPath, snapshot[0]));
}
finally
{
await driver.ShutdownAsync(CancellationToken.None);
// Driver.AbCip.Cli-005 — flush Serilog before process exit so buffered log
// output emitted during driver shutdown is not lost.
FlushLogging();
}
}
/// <summary>
/// Tag-name key the driver uses internally. The path + type pair is already unique
/// so we use them verbatim — keeps tag-level diagnostics readable without mangling.
/// </summary>
/// <param name="tagPath">The symbolic tag path.</param>
/// <param name="type">The data type.</param>
internal static string SynthesiseTagName(string tagPath, AbCipDataType type)
=> $"{tagPath}:{type}";
}