4de691c9c5
Implement Go-parity background flush loop (coalesce 16KB/8ms) in MsgBlock/FileStore, replace O(n) GetStateAsync with incremental counters, skip PruneExpired/LoadAsync/ PrunePerSubject when not needed, and bypass RAFT for single-replica streams. Fix counter tracking bugs in RemoveMsg/EraseMsg/TTL expiry and ObjectDisposedException races in flush loop disposal. FileStore optimizations verified with 3112/3112 JetStream tests passing; async publish benchmark remains at ~174 msg/s due to E2E protocol path bottleneck.
43 lines
1.3 KiB
C#
43 lines
1.3 KiB
C#
using System.Text.Json;
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using System.Text.Json.Serialization;
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namespace NATS.Server.JetStream.Models;
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// Go: server/stream.go — counterMsgPayload struct { Value string `json:"val"` }
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// Reference: golang/nats-server/server/stream.go:20759
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public sealed class CounterValue
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{
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[JsonPropertyName("val")]
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public string Value { get; set; } = "0";
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public long AsLong() => long.TryParse(Value, out var v) ? v : 0;
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public static CounterValue FromLong(long value) => new() { Value = value.ToString() };
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public byte[] ToPayload() => JsonSerializer.SerializeToUtf8Bytes(this);
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public static CounterValue FromPayload(ReadOnlySpan<byte> payload)
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{
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if (payload.IsEmpty)
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return new CounterValue();
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try
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{
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return JsonSerializer.Deserialize<CounterValue>(payload) ?? new CounterValue();
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}
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catch (JsonException)
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{
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return new CounterValue();
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}
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}
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}
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// Go: NATS header constants for counter messages.
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// Reference: golang/nats-server/server/stream.go — counter header constants.
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public static class CounterHeaders
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{
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public const string NatsIncr = "Nats-Incr";
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public const string NatsCounterSources = "Nats-Counter-Sources";
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public const string NatsStreamSource = "Nats-Stream-Source";
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}
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