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package telemetry
import (
"fmt"
"net/http"
"sync/atomic"
"aigw/internal/billing"
)
type Metrics struct {
requests atomic.Uint64
failed atomic.Uint64
inFlight atomic.Int64
attempts atomic.Uint64
droppedUsage atomic.Uint64
settlementBacklog atomic.Int64
settlementSpool atomic.Int64
stripeRefundBacklog atomic.Int64
stripeUncollected atomic.Int64
stripeMismatches atomic.Int64
stripeWebhooks atomic.Int64
unmeteredSuccesses atomic.Int64
ready atomic.Int64
}
func (m *Metrics) SetSettlementQueue(backlog int64, spool int) {
m.settlementBacklog.Store(backlog)
m.settlementSpool.Store(int64(spool))
}
func (m *Metrics) SetReady(ready bool) {
if ready {
m.ready.Store(1)
} else {
m.ready.Store(0)
}
}
func (m *Metrics) SetStripeOperations(status billing.OperationalStatus) {
m.stripeRefundBacklog.Store(status.RefundBacklog)
m.stripeUncollected.Store(status.UncollectedMicros)
m.stripeMismatches.Store(status.ReconciliationMismatches)
m.stripeWebhooks.Store(status.UnprocessedWebhooks)
m.unmeteredSuccesses.Store(status.UnmeteredSuccesses)
}
func (m *Metrics) RequestStarted() {
m.requests.Add(1)
m.inFlight.Add(1)
}
func (m *Metrics) RequestFinished(success bool) {
m.inFlight.Add(-1)
if !success {
m.failed.Add(1)
}
}
func (m *Metrics) UpstreamAttempt() {
m.attempts.Add(1)
}
func (m *Metrics) UsageDropped() {
m.droppedUsage.Add(1)
}
func (m *Metrics) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "text/plain; version=0.0.4")
fmt.Fprintf(w, "# TYPE aigw_requests_total counter\naigw_requests_total %d\n", m.requests.Load())
fmt.Fprintf(w, "# TYPE aigw_requests_failed_total counter\naigw_requests_failed_total %d\n", m.failed.Load())
fmt.Fprintf(w, "# TYPE aigw_requests_in_flight gauge\naigw_requests_in_flight %d\n", m.inFlight.Load())
fmt.Fprintf(w, "# TYPE aigw_upstream_attempts_total counter\naigw_upstream_attempts_total %d\n", m.attempts.Load())
fmt.Fprintf(w, "# TYPE aigw_usage_events_dropped_total counter\naigw_usage_events_dropped_total %d\n", m.droppedUsage.Load())
fmt.Fprintf(w, "# TYPE aigw_billing_settlement_backlog gauge\naigw_billing_settlement_backlog %d\n", m.settlementBacklog.Load())
fmt.Fprintf(w, "# TYPE aigw_billing_settlement_spool_records gauge\naigw_billing_settlement_spool_records %d\n", m.settlementSpool.Load())
fmt.Fprintf(w, "# TYPE aigw_stripe_refund_backlog gauge\naigw_stripe_refund_backlog %d\n", m.stripeRefundBacklog.Load())
fmt.Fprintf(w, "# TYPE aigw_billing_uncollected_micros gauge\naigw_billing_uncollected_micros %d\n", m.stripeUncollected.Load())
fmt.Fprintf(w, "# TYPE aigw_stripe_reconciliation_mismatches gauge\naigw_stripe_reconciliation_mismatches %d\n", m.stripeMismatches.Load())
fmt.Fprintf(w, "# TYPE aigw_stripe_webhook_backlog gauge\naigw_stripe_webhook_backlog %d\n", m.stripeWebhooks.Load())
fmt.Fprintf(w, "# TYPE aigw_billing_unmetered_successes gauge\naigw_billing_unmetered_successes %d\n", m.unmeteredSuccesses.Load())
fmt.Fprintf(w, "# TYPE aigw_ready gauge\naigw_ready %d\n", m.ready.Load())
}
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