- 预扣:每请求按 body 估算成本上界计入冻结额(1e-8 USD 原子计数),402 判定 改为「余额 - 在途冻结 ≤ 0」,并发的长流式请求不再互相透支;OT_PROXY_RESERVE_MAX_TOKENS 控制估算基数(默认 4096,0=关闭),handler defer 释放,失败/中断/panic 均覆盖 - 调度:全部候选都在运行期冷却时,剩余冷却 ≤ OT_PROXY_COOLDOWN_GRACE 的最早恢复渠道 兜底重试一次而不是 503(429 Retry-After 语义);DB 层不可用的渠道不参与兜底 - 指标:openteam_proxy_requests_total / request_duration / channel_failures / usage_queue_depth / frozen_balance,/metrics 默认关闭(OT_METRICS_ENABLED 开启)
63 lines
2.5 KiB
Go
63 lines
2.5 KiB
Go
// Package metrics Prometheus 指标:进程内 registry + 文本端点(api 层按开关挂载 /metrics)。
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//
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// label 基数约束:channel/model 来自受管目录、status/kind 为有限枚举,可安全做 label;
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// 请求级随机值(trace id、用户 id、错误详情)禁止入 label,否则基数爆炸拖垮采集端。
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package metrics
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import (
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"net/http"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var reg = prometheus.NewRegistry()
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var (
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// RequestsTotal 代理请求终结计数。channel 为 "none" 表示未打到任何渠道
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// (无候选/满载等),model 为请求的模型名。
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RequestsTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
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Name: "openteam_proxy_requests_total",
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Help: "Proxied requests terminated, by channel/model/status.",
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}, []string{"channel", "model", "status"})
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// RequestDuration 请求从进入 handler 到终结的耗时(按渠道)。
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RequestDuration = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Name: "openteam_proxy_request_duration_seconds",
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Help: "Proxy request duration, by channel.",
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Buckets: []float64{.05, .1, .25, .5, 1, 2.5, 5, 10, 30, 60, 120, 300},
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}, []string{"channel"})
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// ChannelFailures 上游失败计数(按渠道与失败类型),与运行期冷却同源。
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ChannelFailures = prometheus.NewCounterVec(prometheus.CounterOpts{
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Name: "openteam_channel_failures_total",
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Help: "Upstream failures, by channel/fail kind.",
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}, []string{"channel", "kind"})
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// RecorderQueueDepth 记账队列中待落库的记录数。持续增长说明 DB 写入跟不上。
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RecorderQueueDepth = prometheus.NewGauge(prometheus.GaugeOpts{
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Name: "openteam_usage_queue_depth",
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Help: "Usage records buffered, waiting to be flushed.",
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})
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// FrozenBalance 在途请求预扣(冻结)的金额合计(USD)。见 proxy 的 reserve/capture。
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FrozenBalance = prometheus.NewGauge(prometheus.GaugeOpts{
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Name: "openteam_frozen_balance",
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Help: "Balance reserved by in-flight requests (USD).",
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})
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)
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func init() {
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reg.MustRegister(
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RequestsTotal, RequestDuration, ChannelFailures, RecorderQueueDepth, FrozenBalance,
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collectors.NewGoCollector(),
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collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
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)
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}
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// Handler /metrics 的 http.Handler(独立 registry,避免全局默认注册器的耦合)。
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func Handler() http.Handler {
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return promhttp.HandlerFor(reg, promhttp.HandlerOpts{})
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}
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