Joseph Doherty
b50fd6c34a
Re-review at 7286d320. -008 (Low): all four commands now FlushLogging() in finally (parity
with AbCip.Cli; subscribe could drop shutdown log lines) + IL-inspection test.
67 lines
2.8 KiB
C#
67 lines
2.8 KiB
C#
using CliFx.Attributes;
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using CliFx.Infrastructure;
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using ZB.MOM.WW.OtOpcUa.Driver.Cli.Common;
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namespace ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.Cli.Commands;
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/// <summary>
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/// Read one PCCC address (N7:0, F8:0, B3:0/3, L19:0, ST17:0, T4:0.ACC, etc.).
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/// </summary>
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[Command("read", Description = "Read a single PCCC file address.")]
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public sealed class ReadCommand : AbLegacyCommandBase
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{
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/// <summary>Gets the PCCC file address to read.</summary>
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[CommandOption("address", 'a', Description =
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"PCCC file address. File letter implies storage; bit-within-word via slash " +
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"(B3:0/3 or N7:0/5). Sub-element access for timers/counters/controls uses " +
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"dot notation (T4:0.ACC, C5:0.PRE, R6:0.LEN).",
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IsRequired = true)]
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public string Address { get; init; } = default!;
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/// <summary>Gets the data type of the address.</summary>
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[CommandOption("type", 't', Description =
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"Bit / Int / Long / Float / AnalogInt / String / TimerElement / CounterElement / " +
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"ControlElement (default Int).")]
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public AbLegacyDataType DataType { get; init; } = AbLegacyDataType.Int;
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/// <inheritdoc />
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public override async ValueTask ExecuteAsync(IConsole console)
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{
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ConfigureLogging();
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var ct = console.RegisterCancellationHandler();
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var tagName = SynthesiseTagName(Address, DataType);
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var tag = new AbLegacyTagDefinition(
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Name: tagName,
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DeviceHostAddress: Gateway,
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Address: Address,
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DataType: DataType,
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Writable: false);
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var options = BuildOptions([tag]);
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// Plain `var driver`: explicit ShutdownAsync(CancellationToken.None) in the
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// finally is the deliberate teardown path; combining it with `await using`
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// (which itself calls ShutdownAsync) would tear the driver down twice.
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var driver = new AbLegacyDriver(options, DriverInstanceId);
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try
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{
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await driver.InitializeAsync("{}", ct);
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var snapshot = await driver.ReadAsync([tagName], ct);
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await console.Output.WriteLineAsync(SnapshotFormatter.Format(Address, snapshot[0]));
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}
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finally
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{
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await driver.ShutdownAsync(CancellationToken.None);
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// Driver.AbLegacy.Cli-008 — flush Serilog before process exit so buffered
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// log output emitted during driver shutdown is not lost.
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FlushLogging();
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}
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}
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/// <summary>Tag-name key the driver uses internally. Address+type is already unique.</summary>
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/// <param name="address">The PCCC file address.</param>
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/// <param name="type">The data type of the address.</param>
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internal static string SynthesiseTagName(string address, AbLegacyDataType type)
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=> $"{address}:{type}";
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}
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