70 lines
2.3 KiB
Text
70 lines
2.3 KiB
Text
# send.ludic - every frame: a batch when one is due, its answer when it lands, the wait doubled
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# when it failed, the queue on disk every few seconds. One request at a time; nothing waits on it.
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var telemetry__clock_on: bool = false
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export function telemetry_tick() -> void {
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if not telemetry__ready { return }
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telemetry__id_tick()
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if not telemetry__enabled() {
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if len(telemetry__q) > 0 or telemetry__h >= 0 { telemetry_forget() }
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return
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}
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if not telemetry__can_send() { return }
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let now = telemetry__now()
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let c = telemetry__conf()
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if not telemetry__clock_on {
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telemetry__clock_on = true
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telemetry__next_ms = now + c.flush_ms
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telemetry__saved_ms = now
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}
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if now - telemetry__saved_ms >= c.save_ms {
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telemetry_save()
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telemetry__saved_ms = now
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}
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if telemetry__h >= 0 {
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telemetry__answer(now)
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return
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}
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if len(telemetry__q) == 0 { return }
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let early = telemetry__fails == 0 and len(telemetry__q) >= c.flush_at
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if early or now >= telemetry__next_ms {
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telemetry_save()
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telemetry__flush(now)
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if telemetry__fails == 0 { telemetry__next_ms = now + c.flush_ms }
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}
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}
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function telemetry__answer(now: int) -> void {
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let st = telemetry__poll(telemetry__h)
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if st < 0 { return }
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telemetry__h = -1
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if st > 0 {
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telemetry__queue_drop(telemetry__sent_n)
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telemetry__fails = 0
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telemetry__next_ms = now + telemetry__conf().flush_ms
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telemetry__fact(TELEMETRY_SENT, telemetry__sent_n, st, 0)
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} else {
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telemetry__backoff(now)
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telemetry__fact(TELEMETRY_FAILED, telemetry__sent_n, st, telemetry__next_ms - now)
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}
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telemetry_save()
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}
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function telemetry__flush(now: int) -> void {
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if telemetry__h >= 0 or len(telemetry__id) == 0 or len(telemetry__q) == 0 { return }
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let n = min(telemetry__conf().batch, len(telemetry__q))
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let h = telemetry__send(telemetry_batch_body(n))
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if h < 0 {
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telemetry__backoff(now)
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telemetry__fact(TELEMETRY_FAILED, n, 0, telemetry__next_ms - now)
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return
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}
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telemetry__h = h
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telemetry__sent_n = n
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}
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# a failed send: wait twice as long next time, up to backoff_max doublings
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function telemetry__backoff(now: int) -> void {
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if telemetry__fails < telemetry__conf().backoff_max { telemetry__fails += 1 }
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telemetry__next_ms = now + (telemetry__conf().flush_ms << telemetry__fails)
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}
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