a25593a9c6
Group all 69 projects into category subfolders under src/ and tests/ so the Rider Solution Explorer mirrors the module structure. Folders: Core, Server, Drivers (with a nested Driver CLIs subfolder), Client, Tooling. - Move every project folder on disk with git mv (history preserved as renames). - Recompute relative paths in 57 .csproj files: cross-category ProjectReferences, the lib/ HintPath+None refs in Driver.Historian.Wonderware, and the external mxaccessgw refs in Driver.Galaxy and its test project. - Rebuild ZB.MOM.WW.OtOpcUa.slnx with nested solution folders. - Re-prefix project paths in functional scripts (e2e, compliance, smoke SQL, integration, install). Build green (0 errors); unit tests pass. Docs left for a separate pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
81 lines
4.0 KiB
C#
81 lines
4.0 KiB
C#
using Serilog;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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namespace ZB.MOM.WW.OtOpcUa.Core.Scripting;
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/// <summary>
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/// The API user scripts see as the global <c>ctx</c>. Abstract — concrete subclasses
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/// (e.g. <c>VirtualTagScriptContext</c>, <c>AlarmScriptContext</c>) plug in the
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/// actual tag-backend + logger + virtual-tag writer for each evaluation. Phase 7 plan
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/// decision #6: scripts can read any tag, write only to virtual tags, and have no
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/// other .NET reach — no HttpClient, no File, no Process, no reflection.
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/// </summary>
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/// <remarks>
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/// <para>
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/// Every member on this type MUST be serializable in the narrow sense that
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/// <see cref="DependencyExtractor"/> can recognize tag-access call sites from the
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/// script AST. Method names used from scripts are locked — renaming
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/// <see cref="GetTag"/> or <see cref="SetVirtualTag"/> is a breaking change for every
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/// authored script and the dependency extractor must update in lockstep.
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/// </para>
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/// <para>
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/// New helpers (<see cref="Now"/>, <see cref="Deadband"/>) are additive: adding a
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/// method doesn't invalidate existing scripts. Do not remove or rename without a
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/// plan-level decision + migration for authored scripts.
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/// </para>
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/// </remarks>
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public abstract class ScriptContext
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{
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/// <summary>
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/// Read a tag's current value + quality + source timestamp. Path syntax is
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/// <c>Enterprise/Site/Area/Line/Equipment/TagName</c> (forward-slash delimited,
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/// matching the Equipment-namespace browse tree). Returns a
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/// <see cref="DataValueSnapshot"/> so scripts branch on quality without a second
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/// call.
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/// </summary>
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/// <remarks>
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/// <paramref name="path"/> MUST be a string literal in the script source — dynamic
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/// paths (variables, concatenation, method-returned strings) are rejected at
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/// publish by <see cref="DependencyExtractor"/>. This is intentional: the static
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/// dependency set is required for the change-driven scheduler to subscribe to the
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/// right upstream tags at load time.
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/// </remarks>
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public abstract DataValueSnapshot GetTag(string path);
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/// <summary>
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/// Write a value to a virtual tag. Operator scripts cannot write to driver-sourced
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/// tags — the OPC UA dispatch in <c>DriverNodeManager</c> rejects that separately
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/// per ADR-002 with <c>BadUserAccessDenied</c>. This method is the only write path
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/// virtual tags have.
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/// </summary>
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/// <remarks>
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/// Path rules identical to <see cref="GetTag"/> — literal only, dependency
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/// extractor tracks the write targets so the engine knows what downstream
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/// subscribers to notify.
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/// </remarks>
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public abstract void SetVirtualTag(string path, object? value);
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/// <summary>
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/// Current UTC timestamp. Prefer this over <see cref="DateTime.UtcNow"/> in
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/// scripts so the harness can supply a deterministic clock for tests.
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/// </summary>
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public abstract DateTime Now { get; }
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/// <summary>
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/// Per-script Serilog logger. Output lands in the dedicated <c>scripts-*.log</c>
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/// sink with structured property <c>ScriptName</c> = the script's configured name.
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/// Use at error level to surface problems; main <c>opcua-*.log</c> receives a
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/// companion WARN entry so operators see script errors in the primary log.
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/// </summary>
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public abstract ILogger Logger { get; }
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/// <summary>
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/// Deadband helper — returns <c>true</c> when <paramref name="current"/> differs
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/// from <paramref name="previous"/> by more than <paramref name="tolerance"/>.
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/// Useful for alarm predicates that shouldn't flicker on small noise. Pure
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/// function; no side effects.
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/// </summary>
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public static bool Deadband(double current, double previous, double tolerance)
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=> Math.Abs(current - previous) > tolerance;
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}
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