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Namespaces, assemblies, solution, binaries, images, systemd units, config paths, environment variables, protocol methods and the Linux user are all renamed. Breaking: existing databases, node identities and installed units must be recreated.
88 lines
2.9 KiB
C#
88 lines
2.9 KiB
C#
using System.Text.Json;
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using Fleet.Core;
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using Fleet.Link;
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using MoShiro.Measurement;
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using MoShiro.Protocol;
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namespace MoShiro.Probe;
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/// <summary>
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/// 估计 Agent 单调时钟 − Probe 单调时钟：每次 <c>moshiro.clock</c> 往返取中点，在最近 8 次里取往返最短的一次
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/// （往返越短，对称性假设的误差越小）。Probe 的列块头里带着这个偏移，Backend 据此对齐两端的时间戳。
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/// </summary>
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public sealed class ClockEstimator
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{
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private const int Window = 8;
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private readonly object _gate = new();
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private readonly Queue<(long RoundTripUs, long OffsetUs)> _samples = new();
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public long OffsetUs { get; private set; }
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public bool HasEstimate { get; private set; }
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public void Add(long sendUs, long agentUs, long receiveUs)
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{
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lock (_gate)
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{
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_samples.Enqueue((receiveUs - sendUs, agentUs - ((sendUs + receiveUs) / 2)));
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while (_samples.Count > Window)
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{
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_samples.Dequeue();
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}
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OffsetUs = _samples.MinBy(s => s.RoundTripUs).OffsetUs;
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HasEstimate = true;
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}
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}
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}
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/// <summary>
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/// 把 Probe 一侧的行交给这个 Agent：补全块头 → 编码 → 放进会话的发件箱（通道 17，至少一次，有界）。
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/// 发件箱的内容在连接断开重连之后重发；发件箱满了丢弃最旧的。
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/// </summary>
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public sealed class FragmentShipper : IFragmentSink
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{
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private readonly Outbox _outbox;
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private readonly NodeId _agent;
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private readonly ProbeId _probe;
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private readonly ClockEstimator _clock;
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private readonly TimeProvider _time;
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public FragmentShipper(Outbox outbox, NodeId agent, ProbeId probe, ClockEstimator clock, TimeProvider time)
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{
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_outbox = outbox;
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_agent = agent;
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_probe = probe;
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_clock = clock;
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_time = time;
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}
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public void Ship(string kind, FragmentScope scope, IReadOnlyList<RawStream> streams, IReadOnlyDictionary<string, JsonElement>? parameters, long startUtcMs, int durationMs, int port)
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{
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var header = new RawChunkHeader
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{
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ChunkId = ChunkId.New(_time),
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Kind = kind,
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TaskId = scope.Task,
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TestId = scope.Test,
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Phase = scope.Phase,
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AgentId = _agent,
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ProbeId = _probe,
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Port = port,
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StartUtcMs = startUtcMs,
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DurationMs = Math.Max(1, durationMs),
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Clock = new ChunkClock { ProbeOffsetUs = _clock.OffsetUs },
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};
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if (parameters is not null)
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{
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foreach ((string key, JsonElement value) in parameters)
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{
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header.Params[key] = value;
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}
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}
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_outbox.Enqueue(MoShiroChannels.ColumnBlock, header.ChunkId.Value, RawChunkCodec.Encode(new RawChunk(header, streams)));
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}
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}
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