chore: initial project import

backend/src/Monitor.Backend.Application/Models/RawModels.cs

@@ -0,0 +1,64 @@
+using Fleet.Core;
+using Monitor.Protocol;
+
+namespace Monitor.Backend.Application;
+
+/// <summary>原始块的索引信息（块本身在段文件里）。</summary>
+public sealed record RawChunkMeta(
+    ChunkId ChunkId,
+    NodeId AgentId,
+    string Series,
+    string Kind,
+    TaskId? TaskId,
+    TestId? TestId,
+    int? Phase,
+    long StartTs,
+    int DurationMs,
+    bool Partial,
+    string SegmentPath,
+    long Offset,
+    int Length);
+
+/// <summary>写入一个原始块：块的完整字节加上用于索引的元数据。</summary>
+public sealed record RawChunkAppend(RawChunkMeta Meta, ReadOnlyMemory<byte> Bytes, string Day);
+
+public sealed record RawQuery(
+    NodeId? AgentId = null,
+    string? Series = null,
+    string? Kind = null,
+    TestId? TestId = null,
+    long? FromMs = null,
+    long? ToMs = null,
+    long? AfterStartTs = null,
+    int Limit = 500);
+
+public sealed record MetricRow(NodeId AgentId, string Series, long WindowStart, bool Partial, byte[] Metrics);
+
+/// <summary><paramref name="Seq"/> 每次入队递增：处理完成时只删除序号没变的项，处理期间又有迟到的块时不会丢更新。</summary>
+public sealed record QueueItem(NodeId AgentId, string Series, long WindowStart, long NotBefore, string Reason, long Seq = 0);
+
+public sealed record MetricVersionRecord(string MetricId, string Fingerprint, long? RecomputeFrom, long? RecomputeCursor);
+
+/// <summary>指标窗口的层级。数值是窗口宽度（秒）。</summary>
+public enum MetricLevel
+{
+    S10 = 10,
+    M1 = 60,
+    M5 = 300,
+    H1 = 3600,
+}
+
+public static class MetricLevels
+{
+    public static readonly IReadOnlyList<MetricLevel> All = [MetricLevel.S10, MetricLevel.M1, MetricLevel.M5, MetricLevel.H1];
+
+    public static long WidthMs(this MetricLevel level) => (long)level * 1000;
+
+    public static string TableName(this MetricLevel level) => level switch
+    {
+        MetricLevel.S10 => "metric_10s",
+        MetricLevel.M1 => "metric_1m",
+        MetricLevel.M5 => "metric_5m",
+        _ => "metric_1h",
+    };
+}