Joseph Doherty
dbfe2fc4de
Count: Good samples only, value-based status (all Bad => generic Bad), 0/Good on an empty interval inside the tag's data range [first, last] (both directions). Start/End: the raw first/last sample of any quality (own value, status, timestamp). Delta: Uncertain only when the interval's first or last sample is not usable. Forward end-of-data Partial (SDK m_endOfData, earlier edge inclusive) for every per-sample aggregate but Average (PercentGood/Bad left to lane A). Backends push down first/last-any-quality columns and fetch the tag's data range (earliest <= window end, latest >= window start) only when NeedsDataRange. SDK parity masks for Start/End/Delta/Count removed; new parity datasets.
275 lines
15 KiB
C#
275 lines
15 KiB
C#
using System.Text;
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using Npgsql;
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using NpgsqlTypes;
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using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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using ZB.MOM.WW.OtOpcUa.Driver.Historian.Conformance;
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using ZB.MOM.WW.OtOpcUa.Driver.Historian.Sql.Common;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.QuestDb.IntegrationTests;
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/// <summary>
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/// QuestDB-specific read behaviour (the shared Raw/AtTime/Processed literals run through the conformance suite):
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/// tombstones, the pre-1970 / whole-range bucket math, reverse paging at one value per page, QuestDB's LONG NULL
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/// sentinel, the kind-decides-the-value rule, AtTime chunking, Events and failure accounting.
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/// </summary>
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[Collection(QuestDbCollection.Name)]
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public sealed class ReadTests(QuestDbFixture fx) : IAsyncLifetime
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{
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private static readonly CancellationToken Ct = CancellationToken.None;
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private const uint Good = ConformanceData.Good;
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private const uint Bad = ConformanceData.Bad;
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private const uint GoodCalc = 0x00000401u;
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private const uint UncertainCalc = 0x40A40401u;
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private const uint UncertainInterpolated = 0x40A40402u;
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private const uint GoodInterpolated = 0x00000402u;
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private const uint NoDataCalc = 0x809B0401u;
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private QuestDbConformanceBackend _b = null!;
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private static DateTime At(double s) => ConformanceData.At(s);
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public async ValueTask InitializeAsync() => _b = await QuestDbConformanceBackend.CreateConcreteAsync(fx);
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public async ValueTask DisposeAsync()
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{
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if (_b is not null) await _b.DisposeAsync();
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}
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private static double?[] Values(HistoryReadResult r) => r.Samples.Select(s => (double?)s.Value).ToArray();
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/// <summary>What T6's DeleteAtTime writes: the same (ts, tag), deleted = true, value columns NULL, status BadNoData.</summary>
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private Task TombstoneAsync(string tag, DateTime t) =>
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_b.InsertRowsAsync(tag, [(t, HistorianValue.Empty, HistorianStatusCodes.BadNoData, true)]);
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[Fact]
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public async Task Tombstoned_rows_are_invisible_to_raw_attime_and_processed()
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{
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await ConformanceData.SeedAAsync(_b); // +0=10, +10=20, +20=Bad 30, +30=40, +40=50
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await TombstoneAsync("A", At(10)); // DEDUP replaces the +10 row with a tombstone
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(await _b.ReadBackAsync("A")).Count.ShouldBe(4);
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var src = _b.CreateDataSource();
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var raw = await src.ReadRawAsync("A", At(0), At(100), 0, Ct);
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Values(raw).ShouldBe([10d, 30d, 40d, 50d]);
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raw.Samples.Select(s => s.StatusCode).ShouldBe([Good, Bad, Good, Good]);
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// +10 is no longer an exact hit: previous is +0 = 10 (Good), next is the Bad +20 ⇒ held, Uncertain.
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var at = (await src.ReadAtTimeAsync("A", [At(10), At(5)], Ct)).Samples;
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at.Select(s => s.Value).ShouldBe([(object?)10d, 10d]);
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at.ShouldAllBe(s => s.StatusCode == UncertainInterpolated);
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// B0 [0,20) holds only {10}: Good, count 1. A visible tombstone would be a Bad sample ⇒ Uncertain, PercentBad 50.
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async Task<DataValueSnapshot> B0(HistoryAggregateType a) =>
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(await src.ReadProcessedAsync("A", At(0), At(80), TimeSpan.FromSeconds(20), a, Ct)).Samples[0];
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var avg = await B0(HistoryAggregateType.Average);
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avg.Value.ShouldBe(10d);
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avg.StatusCode.ShouldBe(GoodCalc);
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(await B0(HistoryAggregateType.Count)).Value.ShouldBe(1);
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(await B0(HistoryAggregateType.PercentBad)).Value.ShouldBe(0d);
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(await B0(HistoryAggregateType.End)).Value.ShouldBe(10d);
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}
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[Fact]
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public async Task A_whole_range_processed_read_from_1601_to_9999_with_interval_zero_does_not_overflow()
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{
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await ConformanceData.SeedAAsync(_b);
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var src = _b.CreateDataSource();
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var start = new DateTime(1601, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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var end = new DateTime(9999, 12, 31, 0, 0, 0, DateTimeKind.Utc);
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foreach (var agg in new[] { HistoryAggregateType.Average, HistoryAggregateType.Start, HistoryAggregateType.MaximumActualTime })
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{
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var s = (await src.ReadProcessedAsync("A", start, end, TimeSpan.Zero, agg, Ct)).Samples.Single();
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// The data starts (+0) strictly inside the one interval ⇒ Partial on every aggregate but Average (#677). Start
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// is the raw first sample (#680): its own Good status, no Calculated bit, plus InfoType + Partial.
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var expected = agg switch
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{
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HistoryAggregateType.Average => UncertainCalc,
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HistoryAggregateType.Start => 0x00000404u,
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_ => UncertainCalc | 0x4u,
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};
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s.StatusCode.ShouldBe(expected, agg.ToString());
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}
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(await src.ReadProcessedAsync("A", start, end, TimeSpan.Zero, HistoryAggregateType.Average, Ct)).Samples.Single().Value.ShouldBe(30d);
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(await src.ReadProcessedAsync("A", start, end, TimeSpan.Zero, HistoryAggregateType.Start, Ct)).Samples.Single().Value.ShouldBe(10d);
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var max = (await src.ReadProcessedAsync("A", start, end, TimeSpan.Zero, HistoryAggregateType.MaximumActualTime, Ct)).Samples.Single();
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max.Value.ShouldBe(50d);
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max.SourceTimestampUtc.ShouldBe(_b.Round(At(40)));
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// The extreme DateTime range: MinValue/MaxValue are nudged (never bound as ±infinity, which would match nothing).
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(await src.ReadProcessedAsync("A", DateTime.MinValue, DateTime.MaxValue, TimeSpan.Zero, HistoryAggregateType.Count, Ct))
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.Samples.Single().Value.ShouldBe(4);
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// A pre-1970 window holds no data and is not an error.
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(await src.ReadProcessedAsync("A", start, new DateTime(1969, 1, 1, 0, 0, 0, DateTimeKind.Utc), TimeSpan.FromDays(3650),
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HistoryAggregateType.Count, Ct)).Samples.ShouldAllBe(x => x.StatusCode == NoDataCalc);
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src.GetHealthSnapshot().TotalFailures.ShouldBe(0);
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}
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/// <summary>
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/// The node manager's reverse paging at <c>NumValuesPerNode = 1</c> (OtOpcUaNodeManager + HistoryPaging): resume at
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/// the last timestamp inclusive and trim it; when the trimmed page stalls on that timestamp, point-read it and step
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/// one tick down. One tick below a µs-aligned time rounds to the previous µs, so the walk advances.
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/// </summary>
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[Fact]
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public async Task A_reverse_paging_walk_with_one_value_per_page_returns_every_row()
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{
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await ConformanceData.SeedAAsync(_b);
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var src = _b.CreateDataSource();
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var end = At(-1);
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DateTime start = At(100);
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var resumed = false;
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var emitted = new List<object?>();
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for (var guard = 0; guard < 50; guard++)
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{
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var page = (await src.ReadRawAsync("A", start, end, 1, Ct)).Samples;
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var trimmed = resumed ? page.Where(s => s.SourceTimestampUtc != start).ToList() : page.ToList();
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if (page.Count == 0) break;
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if (resumed && (trimmed.Count == 0 || trimmed[^1].SourceTimestampUtc == start))
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{
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// Stalled on the boundary: the tie cluster at `start` is one sample (already emitted) ⇒ step down a tick.
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(await src.ReadRawAsync("A", start, start, 2, Ct)).Samples.Count.ShouldBe(1);
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if (start.AddTicks(-1) <= end) break;
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start = start.AddTicks(-1);
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resumed = false;
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continue;
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}
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emitted.AddRange(trimmed.Select(s => s.Value));
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start = page[^1].SourceTimestampUtc!.Value;
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resumed = true;
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}
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emitted.ShouldBe([50d, 40d, 30d, 20d, 10d]);
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}
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[Fact]
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public async Task An_int64_of_long_MinValue_is_served_as_long_MinValue_not_zero()
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{
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// QuestDB stores long.MinValue in a LONG as NULL (its NULL sentinel); num_value keeps -2^63 exactly (RC2).
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await _b.SeedAsync("L",
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(At(0), HistorianValue.FromInt64(long.MinValue), Good),
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(At(1), HistorianValue.FromInt64(long.MinValue + 1), Good));
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var src = _b.CreateDataSource();
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(await src.ReadRawAsync("L", At(0), At(10), 0, Ct)).Samples.Select(s => s.Value)
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.ShouldBe([(object?)long.MinValue, long.MinValue + 1]);
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(await src.ReadAtTimeAsync("L", [At(0)], Ct)).Samples.Single().Value.ShouldBe(long.MinValue);
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(await src.ReadProcessedAsync("L", At(0), At(10), TimeSpan.Zero, HistoryAggregateType.Start, Ct))
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.Samples.Single().Value.ShouldBe(long.MinValue);
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}
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[Fact]
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public async Task The_kind_not_the_populated_column_decides_the_value()
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{
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// An Int64-kind row whose num_value is NULL (a NaN-free double view lost) still serves its int_value, and a
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// Double-kind row carrying a stray int_value still serves num_value.
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await _b.SeedAsync("K");
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await _b.ExecuteAsync(
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$"INSERT INTO {_b.Conn.SampleTable} (ts, tag, kind, num_value, int_value, status, deleted, server_ts) " +
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"VALUES ($1, $2, $3, NULL, $4, $5, false, $6), ($7, $2, $8, $9, $10, $5, false, $11)",
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cmd =>
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{
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QuestDbConnection.BindTimestamp(cmd, At(0)); // $1
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QuestDbConnection.BindText(cmd, "K"); // $2
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QuestDbConnection.BindByte(cmd, (byte)HistorianValueKind.Int64); // $3
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QuestDbConnection.BindLong(cmd, 7); // $4
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QuestDbConnection.BindLong(cmd, 0); // $5 status Good
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QuestDbConnection.BindTimestamp(cmd, At(1)); // $6
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QuestDbConnection.BindTimestamp(cmd, At(2)); // $7
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QuestDbConnection.BindByte(cmd, (byte)HistorianValueKind.Double); // $8
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cmd.Parameters.Add(new NpgsqlParameter { NpgsqlDbType = NpgsqlDbType.Double, Value = 2.5 }); // $9
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QuestDbConnection.BindLong(cmd, 99); // $10
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QuestDbConnection.BindTimestamp(cmd, At(3)); // $11
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});
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var s = (await _b.CreateDataSource().ReadRawAsync("K", At(0), At(10), 0, Ct)).Samples;
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s.Select(x => x.Value).ShouldBe([(object?)7L, 2.5d]);
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}
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[Fact]
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public async Task AtTime_over_several_statement_chunks_keeps_request_length_and_order()
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{
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await ConformanceData.SeedAAsync(_b);
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// 140 distinct times (3 statements of ≤ 50), requested in descending order, plus a duplicate of the first.
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var times = Enumerable.Range(0, 140).Select(i => At((390 - i * 3) / 10.0)).ToList();
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times.Add(times[0]);
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var s = (await _b.CreateDataSource().ReadAtTimeAsync("A", times, Ct)).Samples;
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s.Count.ShouldBe(times.Count);
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s.Select(x => x.SourceTimestampUtc).ShouldBe(times.Select(t => (DateTime?)t)); // the requested times (M3)
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s[0].Value.ShouldBe(49d); // +39: 40 + 10 × 9/10
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s[0].StatusCode.ShouldBe(GoodInterpolated);
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s[^1].Value.ShouldBe(49d); // the duplicate
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s[100].Value.ShouldBe(19d); // +9: 10 + 10 × 9/10, from the third chunk
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s[139].Value.ShouldBeNull(); // -2.7 s: no previous sample
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s[139].StatusCode.ShouldBe(0x809B0000u); // BadNoData
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}
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[Fact]
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public async Task Events_are_filtered_by_source_and_window_ascending_and_limited_with_a_continuation()
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{
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await _b.Boot.EnsureAsync(Ct);
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async Task Event(DateTime t, string id, string source, int severity, string? message)
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{
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await _b.ExecuteAsync(
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$"INSERT INTO {_b.Conn.EventTable} (ts, event_id, source, severity, message, received_utc) VALUES ($1, $2, $3, $4, $5, $6)",
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cmd =>
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{
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QuestDbConnection.BindTimestamp(cmd, t);
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QuestDbConnection.BindText(cmd, id);
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QuestDbConnection.BindText(cmd, source);
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cmd.Parameters.Add(new NpgsqlParameter { NpgsqlDbType = NpgsqlDbType.Integer, Value = severity });
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QuestDbConnection.BindText(cmd, message);
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QuestDbConnection.BindTimestamp(cmd, t.AddSeconds(2));
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});
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await _b.Wal.WaitAsync(_b.Conn.EventTable, Ct);
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}
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await Event(At(3), "e3", "src1", 700, "three");
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await Event(At(1), "e1", "src1", 70000, "one");
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await Event(At(2), "e2", "src2", 500, null);
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await Event(At(9), "e9", "src1", 500, "out of window");
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var src = _b.CreateDataSource();
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var all = await src.ReadEventsAsync(null, At(0), At(5), 0, Ct);
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all.Events.Select(e => e.EventId).ShouldBe(["e1", "e2", "e3"]);
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all.ContinuationPoint.ShouldBeNull();
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all.Events[0].Severity.ShouldBe((ushort)65535);
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all.Events[0].EventTimeUtc.ShouldBe(_b.Round(At(1)));
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all.Events[0].ReceivedTimeUtc.ShouldBe(_b.Round(At(1)).AddSeconds(2));
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all.Events[1].Message.ShouldBeNull();
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var one = await src.ReadEventsAsync("src1", At(5), At(0), 1, Ct); // reversed window is swapped
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one.Events.Select(e => e.EventId).ShouldBe(["e1"]);
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Encoding.UTF8.GetString(one.ContinuationPoint!).ShouldBe(EventContinuation.Encode(_b.Round(At(3)), "e3"));
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(await src.ReadEventsAsync("src1", At(0), At(5), 2, Ct)).ContinuationPoint.ShouldBeNull();
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(await src.ReadEventsAsync(new string('x', 401), At(0), At(5), 0, Ct)).Events.ShouldBeEmpty();
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}
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[Fact]
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public async Task A_failed_read_is_rethrown_and_recorded_in_health_without_counting_client_errors()
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{
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// A table set that does not exist, with AutoCreateSchema off: every read that reaches the database fails.
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var prefix = fx.UniquePrefix();
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var o = fx.Options(prefix, autoCreate: false);
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await using var conn = new QuestDbConnection(o);
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var boot = new QuestDbSchemaBootstrapper(conn, o);
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using var src = new QuestDbHistorianDataSource(conn, boot, new QuestDbTagCatalog(conn, boot, new QuestDbWalVisibility(conn, o.VisibilityTimeout)));
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await Should.ThrowAsync<HistorianSchemaMissingException>(() => src.ReadRawAsync("A", At(0), At(100), 0, Ct));
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await Should.ThrowAsync<HistorianSchemaMissingException>(() => src.ReadEventsAsync(null, At(0), At(5), 0, Ct));
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// Client-request errors are thrown before any I/O and are not backend failures.
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await Should.ThrowAsync<HistoryAggregateNotSupportedException>(() =>
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src.ReadProcessedAsync("A", At(0), At(5), TimeSpan.Zero, HistoryAggregateType.StandardDeviationPopulation, Ct));
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await Should.ThrowAsync<ArgumentOutOfRangeException>(() =>
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src.ReadProcessedAsync("A", At(0), At(100), TimeSpan.FromTicks(10), HistoryAggregateType.Count, Ct));
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var h = src.GetHealthSnapshot();
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h.TotalQueries.ShouldBe(2);
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h.TotalFailures.ShouldBe(2);
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h.ConsecutiveFailures.ShouldBe(2);
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h.LastError.ShouldNotBeNull();
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h.LastError.ShouldStartWith(nameof(HistorianSchemaMissingException));
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h.ProcessConnectionOpen.ShouldBeFalse();
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// The healthy backend's own data source is unaffected (a failure fails only its call).
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await ConformanceData.SeedAAsync(_b);
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(await _b.CreateDataSource().ReadRawAsync("A", At(0), At(100), 0, Ct)).Samples.Count.ShouldBe(5);
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}
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}
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