Merge re/m3-value-types: AddHistoricalValuesAsync Double + Int support
Extends the historical-write surface from Float to all five analog types (Float/Double/Int2/Int4/ UInt4), each captured live + golden-tested + write/read-back validated through the pure-managed SDK. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01B6mcaT2PjRFKcogzp9UkfC
This commit is contained in:
Joseph Doherty
@@ -20,7 +20,7 @@ Writes (added 2026-05-04 by explicit user request — do not extend further with
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- `EnsureTagAsync` for analog types: Float, Double, Int2, Int4, UInt4 (live-verified end-to-end). Other types (SingleByteString/DoubleByteString/Int1/Int8/UInt8) fail at native AddTag — likely require a different path and are intentionally not supported. `MinEU`/`MaxEU`/`MinRaw`/`MaxRaw` all round-trip into the DB. By default `ApplyScaling=false` and the server mirrors MinRaw→MinEU and sets `AnalogTag.Scaling=0`; set `ApplyScaling=true` on the definition to persist distinct raw bounds with `AnalogTag.Scaling=1`. The wire encoding is the trailer's second byte (`FE 00` vs `FE 01`).
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- `DeleteTagAsync`
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- `AddHistoricalValuesAsync` (added 2026-06-21 by explicit user request — M3 historical/backfill writes). **gRPC-only** (`HistorianTransport.RemoteGrpc`); non-gRPC transports throw `ProtocolEvidenceMissingException`. Reverse-engineered by capturing the native 2023 R2 client: the historical write rides `HistoryService.AddStreamValues` with an "ON" storage-sample buffer (`HistorianHistoricalWriteProtocol`, golden-tested), NOT the TransactionService `AddNonStreamValues` path the static decompile suggested. Orchestrator (`HistorianGrpcHistoricalWriteOrchestrator`): write-enabled session → `GetTagInfosFromName` (resolves the per-tag GUID = the tag-info `TypeId`) → `AddStreamValues`. Tag must pre-exist (`EnsureTagAsync`). Float value encoding only (the captured type; value = `u32(0) + float32` in an 8-byte slot). Live-validated end-to-end (write + read-back) against the 2023 R2 server. The D2/`AddS2` cache gate (err 129) does NOT block the primed 2023 R2 client. See `docs/plans/revision-write-path.md` §"R3.1 CAPTURED".
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- `AddHistoricalValuesAsync` (added 2026-06-21 by explicit user request — M3 historical/backfill writes). **gRPC-only** (`HistorianTransport.RemoteGrpc`); non-gRPC transports throw `ProtocolEvidenceMissingException`. Reverse-engineered by capturing the native 2023 R2 client: the historical write rides `HistoryService.AddStreamValues` with an "ON" storage-sample buffer (`HistorianHistoricalWriteProtocol`, golden-tested), NOT the TransactionService `AddNonStreamValues` path the static decompile suggested. Orchestrator (`HistorianGrpcHistoricalWriteOrchestrator`): write-enabled session → `GetTagInfosFromName` (resolves the per-tag GUID = the tag-info `TypeId`, and maps the data type via `MapDataType`) → `AddStreamValues`. Tag must pre-exist (`EnsureTagAsync`). Supports all five analog types `EnsureTagAsync` does — **Float, Double, Int2, Int4, UInt4** (all captured live + golden-tested + write/read-back validated). The 4-byte value descriptor is constant (`C0 10 01 00`); the value is `u32(0) + native-width value` (float32 / double64 / int16 / int32 / uint32) selected by the tag's declared type. Other tag types throw `ProtocolEvidenceMissingException`. Live-validated end-to-end against the 2023 R2 server. The D2/`AddS2` cache gate (err 129) does NOT block the primed 2023 R2 client. See `docs/plans/revision-write-path.md` §"R3.1 CAPTURED".
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`AddS2` (streaming process-sample writes for user tags) remains architecturally blocked — the server cache only ingests from configured IOServers/ApplicationServer pipelines. Do not add streaming write-samples support. (`AddHistoricalValuesAsync` is the distinct *non-streamed original/backfill* path and is supported.)
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@@ -249,9 +249,11 @@ over `RemoteGrpc`: `HistorianGrpcHistoricalWriteOrchestrator` opens a write-enab
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`GetTagInfosFromName` (resolves the per-tag GUID = the tag-info record's `TypeId`) →
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`HistoryService.AddStreamValues` ("ON" buffer from `HistorianHistoricalWriteProtocol`, golden-tested) per
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sample. The pure-managed SDK wrote a value and read it back live (gated test
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`AddHistoricalValuesAsync_OverGrpc_WritesAndReadsBack`). Float value encoding only (the captured type);
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gRPC-only. Capture artifacts (gitignored):
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`artifacts/reverse-engineering/grpc-nonstream-capture/captureB4.ndjson`.
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`AddHistoricalValuesAsync_OverGrpc_WritesAndReadsBack`). **All five analog types captured + validated**
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(Float/Double/Int2/Int4/UInt4): the 4-byte value descriptor `C0 10 01 00` is **constant across types**;
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the value is `u32(0) + native-width value` (float32 / double64 / int16 / int32 / uint32) selected by the
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tag's declared type (the orchestrator maps it from the tag-info `NativeDataTypeDescriptor`). gRPC-only.
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Capture artifacts (gitignored): `artifacts/reverse-engineering/grpc-nonstream-capture/cap-*.ndjson`.
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---
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@@ -77,6 +77,7 @@ internal sealed class HistorianGrpcHistoricalWriteOrchestrator
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}
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Guid tagGuid = parsed[0].TypeId;
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HistorianDataType dataType = HistorianWcfTagClient.MapDataType(parsed[0].NativeDataTypeDescriptor);
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var historyClient = new GrpcHistory.HistoryService.HistoryServiceClient(connection.Channel);
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foreach (HistorianHistoricalValue value in values)
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@@ -84,6 +85,7 @@ internal sealed class HistorianGrpcHistoricalWriteOrchestrator
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cancellationToken.ThrowIfCancellationRequested();
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byte[] buffer = HistorianHistoricalWriteProtocol.SerializeAddStreamValuesBuffer(
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tagGuid,
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dataType,
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value.TimestampUtc,
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value.Value,
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DateTime.UtcNow,
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@@ -1,14 +1,14 @@
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using System.Buffers.Binary;
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using AVEVA.Historian.Client.Models;
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namespace AVEVA.Historian.Client.Wcf;
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/// <remarks>
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/// Serializer for the M3 historical (non-streamed original / backfill) value write — the
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/// <c>HistoryService.AddStreamValues</c> <c>values</c> buffer. Decoded byte-for-byte from a live
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/// capture of the native 2023 R2 gRPC client driving
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/// <c>HistorianAccess.AddNonStreamedValue → SendValues</c> against a sandbox tag (see
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/// <c>docs/plans/revision-write-path.md</c> §"R3.1 CAPTURED"). The native non-streamed write does
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/// NOT use the TransactionService <c>AddNonStreamValues</c> path the static decompile suggested — it
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/// <c>HistoryService.AddStreamValues</c> <c>values</c> buffer. Decoded byte-for-byte from live
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/// captures of the native 2023 R2 gRPC client driving
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/// <c>HistorianAccess.AddNonStreamedValue → SendValues</c> against sandbox tags of each analog type
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/// (see <c>docs/plans/revision-write-path.md</c> §"R3.1 CAPTURED"). The native non-streamed write
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/// rides <c>HistoryService.AddStreamValues</c> with an "ON" storage-sample buffer, the analog sibling
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/// of the AddS2 "OS" event buffer (<see cref="HistorianEventWriteProtocol"/>).
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///
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@@ -18,46 +18,61 @@ namespace AVEVA.Historian.Client.Wcf;
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/// 0x02 UInt16 sampleCount = 1
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/// 0x04 UInt32 10 + valueBlob.Length // total buffer length
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/// 0x08 UInt16 valueBlob.Length
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/// 0x0A valueBlob (46 bytes for one analog double):
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/// 0x0A valueBlob:
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/// +0x00 GUID tag GUID (the per-tag GUID = the value ParseTagInfoRecord reads as "typeId")
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/// +0x10 Int64 sample FILETIME (UTC — the VTQ value timestamp)
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/// +0x18 UInt16 OpcQuality = 192 (good)
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/// +0x1A 4 bytes analog value descriptor (constant for the Float path: C0 10 01 00)
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/// +0x1A 4 bytes value descriptor — CONSTANT C0 10 01 00 across all analog types (the server
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/// interprets the value bytes by the tag's declared type)
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/// +0x1E Int64 received/version FILETIME (UTC)
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/// +0x26 UInt32 0 // value high dword (zero for a 4-byte Float)
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/// +0x2A Float32 value // the Float value sits in the high half of the 8-byte slot
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/// +0x26 UInt32 0 // value high dword (constant zero)
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/// +0x2A value bytes, native width by tag type:
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/// Float → Float32(4) · Double → Float64(8) · Int2 → Int16(2)
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/// Int4 → Int32(4) · UInt4 → UInt32(4)
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/// </code>
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///
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/// Captured against a Float tag: the value occupies an 8-byte slot as <c>u32(0) + float32(value)</c>
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/// (the 4-byte IEEE-754 float in the high dword, NOT an 8-byte double). Only the Float encoding is
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/// captured; Double/Int/string tag types use a different descriptor + value width and are rejected
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/// until captured.
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/// Captured for the five analog types <c>EnsureTagAsync</c> supports (Float/Double/Int2/Int4/UInt4).
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/// Other tag types have no captured value encoding and are rejected.
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/// </remarks>
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internal static class HistorianHistoricalWriteProtocol
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{
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public const ushort BufferSignature = 0x4E4F; // "ON"
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public const ushort OpcQualityGood = 192;
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// Captured constant for the analog double value path. The other observed quality/descriptor
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// bytes in the AddS2 "OS" buffer are event-specific; here this 4-byte block sits between the
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// quality and the received-time FILETIME and was constant across captured analog writes.
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private static readonly byte[] AnalogDoubleDescriptor = [0xC0, 0x10, 0x01, 0x00];
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// Captured constant: the 4-byte value descriptor was identical across all analog types
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// (Float/Double/Int2/Int4/UInt4). The value type is conveyed by the tag's registration, not here.
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private static readonly byte[] ValueDescriptor = [0xC0, 0x10, 0x01, 0x00];
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private const int ValueBlobLength = 16 + 8 + 2 + 4 + 8 + 8; // 46
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// valueBlob fixed prefix: GUID(16) + sampleFT(8) + quality(2) + descriptor(4) + receivedFT(8) +
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// value high dword(4) = 42, then the native-width value bytes.
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private const int ValueBlobPrefixLength = 16 + 8 + 2 + 4 + 8 + 4; // 42
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/// <summary>
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/// Builds the <c>AddStreamValues</c> <c>values</c> buffer for a single analog historical sample.
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/// <paramref name="tagGuid"/> is the per-tag GUID (from the gRPC tag-info read), and
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/// <paramref name="tagGuid"/> is the per-tag GUID (from the gRPC tag-info read),
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/// <paramref name="dataType"/> is the tag's declared analog type (selects the value width), and
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/// <paramref name="receivedTimeUtc"/> is the storage/received timestamp the orchestrator stamps.
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/// Throws <see cref="ProtocolEvidenceMissingException"/> for tag types without a captured encoding.
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/// </summary>
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public static byte[] SerializeAddStreamValuesBuffer(
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Guid tagGuid,
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HistorianDataType dataType,
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DateTime sampleTimeUtc,
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double value,
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DateTime receivedTimeUtc,
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ushort quality = OpcQualityGood)
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{
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byte[] valueBlob = SerializeValueBlob(tagGuid, sampleTimeUtc, value, receivedTimeUtc, quality);
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byte[] valueBytes = EncodeNativeValue(dataType, value);
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byte[] valueBlob = new byte[ValueBlobPrefixLength + valueBytes.Length];
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Span<byte> span = valueBlob;
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tagGuid.ToByteArray().CopyTo(span[..16]);
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BinaryPrimitives.WriteInt64LittleEndian(span.Slice(16, 8), ToFileTime(sampleTimeUtc));
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BinaryPrimitives.WriteUInt16LittleEndian(span.Slice(24, 2), quality);
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ValueDescriptor.CopyTo(span.Slice(26, 4));
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BinaryPrimitives.WriteInt64LittleEndian(span.Slice(30, 8), ToFileTime(receivedTimeUtc));
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BinaryPrimitives.WriteUInt32LittleEndian(span.Slice(38, 4), 0); // value high dword (constant 0)
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valueBytes.CopyTo(span.Slice(42, valueBytes.Length));
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byte[] buffer = new byte[10 + valueBlob.Length];
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BinaryPrimitives.WriteUInt16LittleEndian(buffer.AsSpan(0, 2), BufferSignature);
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@@ -68,26 +83,45 @@ internal static class HistorianHistoricalWriteProtocol
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return buffer;
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}
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private static byte[] SerializeValueBlob(
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Guid tagGuid,
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DateTime sampleTimeUtc,
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double value,
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DateTime receivedTimeUtc,
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ushort quality)
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private static byte[] EncodeNativeValue(HistorianDataType dataType, double value)
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{
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byte[] blob = new byte[ValueBlobLength];
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Span<byte> span = blob;
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tagGuid.ToByteArray().CopyTo(span[..16]);
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BinaryPrimitives.WriteInt64LittleEndian(span.Slice(16, 8), ToFileTime(sampleTimeUtc));
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BinaryPrimitives.WriteUInt16LittleEndian(span.Slice(24, 2), quality);
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AnalogDoubleDescriptor.CopyTo(span.Slice(26, 4));
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BinaryPrimitives.WriteInt64LittleEndian(span.Slice(30, 8), ToFileTime(receivedTimeUtc));
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// The value sits in an 8-byte slot as u32(0) + float32(value): the captured Float tag stored
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// a 4-byte IEEE-754 float in the high dword, not an 8-byte double.
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BinaryPrimitives.WriteUInt32LittleEndian(span.Slice(38, 4), 0);
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BinaryPrimitives.WriteSingleLittleEndian(span.Slice(42, 4), (float)value);
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return blob;
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switch (dataType)
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{
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case HistorianDataType.Float:
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{
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byte[] b = new byte[4];
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BinaryPrimitives.WriteSingleLittleEndian(b, (float)value);
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return b;
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}
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case HistorianDataType.Double:
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{
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byte[] b = new byte[8];
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BinaryPrimitives.WriteDoubleLittleEndian(b, value);
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return b;
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}
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case HistorianDataType.Int2:
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{
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byte[] b = new byte[2];
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BinaryPrimitives.WriteInt16LittleEndian(b, checked((short)value));
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return b;
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}
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case HistorianDataType.Int4:
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{
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byte[] b = new byte[4];
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BinaryPrimitives.WriteInt32LittleEndian(b, checked((int)value));
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return b;
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}
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case HistorianDataType.UInt4:
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{
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byte[] b = new byte[4];
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BinaryPrimitives.WriteUInt32LittleEndian(b, checked((uint)value));
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return b;
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}
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default:
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throw new ProtocolEvidenceMissingException(
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$"AddHistoricalValuesAsync has no captured value encoding for tag data type '{dataType}'. " +
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"Captured types: Float, Double, Int2, Int4, UInt4.");
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}
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}
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private static long ToFileTime(DateTime value)
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@@ -189,9 +189,10 @@ public sealed class HistorianGrpcIntegrationTests
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HistorianClient client = new(BuildOptions(host));
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// A backfill sample at a fixed historical second, with a distinctive value.
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// A backfill sample at a fixed historical second, with a distinctive whole-number value so
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// it round-trips for any analog tag type (Float/Double/Int2/Int4/UInt4).
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DateTime stamp = new DateTime(DateTime.UtcNow.Year, 1, 2, 3, 4, 5, DateTimeKind.Utc);
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const double expected = 222.5;
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const double expected = 7777;
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bool wrote = await client.AddHistoricalValuesAsync(
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sandboxTag!,
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[new HistorianHistoricalValue(stamp, expected)],
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@@ -1,41 +1,60 @@
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using System.Buffers.Binary;
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using AVEVA.Historian.Client.Models;
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using AVEVA.Historian.Client.Wcf;
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namespace AVEVA.Historian.Client.Tests;
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public sealed class WcfHistoricalWriteProtocolTests
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{
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// The exact 56-byte HistoryService.AddStreamValues "values" buffer captured live from the native
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// 2023 R2 client writing a historical Float sample (124.5) to a sandbox tag — see
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// docs/plans/revision-write-path.md §"R3.1 CAPTURED".
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private const string CapturedBufferHex =
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"4f4e0100380000002e00" + // "ON" + count(1) + totalLen(56) + payloadLen(46)
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"d51d3107e9f8664793b155d3d1aef544" + // tag GUID 07311dd5-f8e9-4766-93b1-55d3d1aef544
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"70df38b1d101dd01" + // sample FILETIME
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"c000" + // OpcQuality = 192
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"c0100100" + // analog double descriptor
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"e64bcb74e201dd01" + // received/version FILETIME
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"000000000000f942"; // double 124.5
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[Fact]
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public void SerializeAddStreamValuesBuffer_MatchesCapturedNativeBuffer()
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// Exact HistoryService.AddStreamValues "values" buffers captured live from the native 2023 R2
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// client writing one historical sample to a sandbox tag of each analog type — see
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// docs/plans/revision-write-path.md §"R3.1 CAPTURED". The value descriptor (C0 10 01 00) is
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// constant across types; only the value width differs.
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[Theory]
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[InlineData(HistorianDataType.Float, 124.5,
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"4f4e0100380000002e00d51d3107e9f8664793b155d3d1aef54470df38b1d101dd01c000c0100100e64bcb74e201dd01000000000000f942")]
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[InlineData(HistorianDataType.Double, 124.5,
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"4f4e01003c0000003200" + "7f970bb0b5a7344bb7bf6899ff06d027" + "c07d5f23d701dd01" + "c000" + "c0100100" + "08eff1e6e701dd01" + "000000000000000000205f40")]
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[InlineData(HistorianDataType.Int2, 1234d,
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"4f4e0100360000002c00" + "35bb0ca5865a7f4498f06bf4e4d9ab23" + "f012f356d701dd01" + "c000" + "c0100100" + "9546841ae801dd01" + "00000000d204")]
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[InlineData(HistorianDataType.Int4, 12345d,
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"4f4e0100380000002e00" + "ca9735f7f841b244b56f9c14ccfeac32" + "b09bc72fd701dd01" + "c000" + "c0100100" + "104b59f3e701dd01" + "0000000039300000")]
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[InlineData(HistorianDataType.UInt4, 305419896d,
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"4f4e0100380000002e00" + "e7ae22d8e4cc65439ebd8bcb09402974" + "602d6663d701dd01" + "c000" + "c0100100" + "498af726e801dd01" + "0000000078563412")]
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public void SerializeAddStreamValuesBuffer_MatchesCapturedNativeBuffer(HistorianDataType dataType, double value, string capturedHex)
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{
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var tagGuid = new Guid("07311dd5-f8e9-4766-93b1-55d3d1aef544");
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DateTime sampleTime = DateTime.FromFileTimeUtc(0x01dd01d1b138df70);
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DateTime receivedTime = DateTime.FromFileTimeUtc(0x01dd01e274cb4be6);
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byte[] captured = Convert.FromHexString(capturedHex);
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// The GUID + both FILETIMEs sit at fixed offsets (the value width varies after them).
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var tagGuid = new Guid(captured.AsSpan(10, 16).ToArray());
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long sampleFt = BinaryPrimitives.ReadInt64LittleEndian(captured.AsSpan(26, 8));
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long receivedFt = BinaryPrimitives.ReadInt64LittleEndian(captured.AsSpan(40, 8));
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byte[] actual = HistorianHistoricalWriteProtocol.SerializeAddStreamValuesBuffer(
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tagGuid, sampleTime, value: 124.5, receivedTime, quality: 192);
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tagGuid,
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dataType,
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DateTime.FromFileTimeUtc(sampleFt),
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value,
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DateTime.FromFileTimeUtc(receivedFt),
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quality: 192);
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Assert.Equal(Convert.FromHexString(CapturedBufferHex), actual);
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Assert.Equal(captured, actual);
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}
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[Fact]
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public void SerializeAddStreamValuesBuffer_UnsupportedType_Throws()
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{
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Assert.Throws<ProtocolEvidenceMissingException>(() =>
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HistorianHistoricalWriteProtocol.SerializeAddStreamValuesBuffer(
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Guid.NewGuid(), HistorianDataType.SingleByteString, DateTime.UtcNow, 1.0, DateTime.UtcNow));
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}
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[Fact]
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public void SerializeAddStreamValuesBuffer_HeaderDeclaresLengths()
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{
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byte[] buffer = HistorianHistoricalWriteProtocol.SerializeAddStreamValuesBuffer(
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Guid.NewGuid(), DateTime.UtcNow, value: 1.0, DateTime.UtcNow);
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Guid.NewGuid(), HistorianDataType.Float, DateTime.UtcNow, value: 1.0, DateTime.UtcNow);
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Assert.Equal(56, buffer.Length);
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Assert.Equal(0x4E4F, BitConverter.ToUInt16(buffer, 0)); // "ON"
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Assert.Equal(1, BitConverter.ToUInt16(buffer, 2)); // sampleCount
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Assert.Equal((uint)buffer.Length, BitConverter.ToUInt32(buffer, 4));
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@@ -227,7 +227,17 @@ namespace AVEVA.Historian.Grpc2023CaptureHarness
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string tagName = GetOption(args, "--tag") ?? "SdkM3CaptureSandbox";
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bool create = args.Contains("--create");
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bool commit = args.Contains("--commit");
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float sampleValue = float.TryParse(GetOption(args, "--value"), out float fv) ? fv : 123.0f;
|
||||
string dataType = GetOption(args, "--data-type") ?? "Float"; // Float|Double|Int2|Int4|UInt4
|
||||
string rawValue = GetOption(args, "--value") ?? "123";
|
||||
// Box the value as the CLR type the HistorianDataValue expects for this tag type.
|
||||
object sampleValue = dataType switch
|
||||
{
|
||||
"Double" => (object)double.Parse(rawValue),
|
||||
"Int2" => (object)short.Parse(rawValue),
|
||||
"Int4" => (object)int.Parse(rawValue),
|
||||
"UInt4" => (object)uint.Parse(rawValue),
|
||||
_ => (object)float.Parse(rawValue),
|
||||
};
|
||||
string? user = Environment.GetEnvironmentVariable("HISTORIAN_USER");
|
||||
string? password = Environment.GetEnvironmentVariable("HISTORIAN_PASSWORD");
|
||||
if (string.IsNullOrEmpty(user))
|
||||
@@ -278,7 +288,7 @@ namespace AVEVA.Historian.Grpc2023CaptureHarness
|
||||
object tag = Activator.CreateInstance(tagType)!;
|
||||
SetProp(tag, "TagName", tagName);
|
||||
TrySetProp(tag, "TagDescription", "histsdk M3 non-streamed-write capture sandbox");
|
||||
TrySetProp(tag, "TagDataType", Enum.Parse(tagDataTypeEnum, "Float", true));
|
||||
TrySetProp(tag, "TagDataType", Enum.Parse(tagDataTypeEnum, dataType, true));
|
||||
TrySetProp(tag, "TagStorageType", Enum.Parse(tagStorageEnum, "Cyclic", true));
|
||||
object addErr = Activator.CreateInstance(errorType)!;
|
||||
object?[] addArgs = { tag, 0u, addErr };
|
||||
@@ -332,7 +342,7 @@ namespace AVEVA.Historian.Grpc2023CaptureHarness
|
||||
// --- build the historical (backfill) value ---
|
||||
object value = Activator.CreateInstance(valueType)!;
|
||||
SetProp(value, "TagKey", tagKey);
|
||||
TrySetProp(value, "DataValueType", Enum.Parse(valueDataTypeEnum, "Float", true));
|
||||
TrySetProp(value, "DataValueType", Enum.Parse(valueDataTypeEnum, dataType, true));
|
||||
TrySetProp(value, "OpcQuality", (ushort)192);
|
||||
TrySetProp(value, "Value", sampleValue);
|
||||
DateTime ts = DateTime.UtcNow.AddHours(-2); // backfill = past timestamp
|
||||
|
||||
Reference in New Issue
Block a user