82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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//go:build !test
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package api
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import (
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"context"
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"time"
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"github.com/go-kit/kit/metrics"
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"github.com/mainflux/mainflux/certs"
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)
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var _ certs.Service = (*metricsMiddleware)(nil)
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type metricsMiddleware struct {
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counter metrics.Counter
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latency metrics.Histogram
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svc certs.Service
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}
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// MetricsMiddleware instruments core service by tracking request count and latency.
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func MetricsMiddleware(svc certs.Service, counter metrics.Counter, latency metrics.Histogram) certs.Service {
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return &metricsMiddleware{
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counter: counter,
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latency: latency,
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svc: svc,
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}
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}
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// IssueCert instruments IssueCert method with metrics.
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func (ms *metricsMiddleware) IssueCert(ctx context.Context, token, thingID, ttl string) (certs.Cert, error) {
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defer func(begin time.Time) {
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ms.counter.With("method", "issue_cert").Add(1)
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ms.latency.With("method", "issue_cert").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return ms.svc.IssueCert(ctx, token, thingID, ttl)
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}
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// ListCerts instruments ListCerts method with metrics.
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func (ms *metricsMiddleware) ListCerts(ctx context.Context, token, thingID string, offset, limit uint64) (certs.Page, error) {
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defer func(begin time.Time) {
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ms.counter.With("method", "list_certs").Add(1)
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ms.latency.With("method", "list_certs").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return ms.svc.ListCerts(ctx, token, thingID, offset, limit)
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}
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// ListSerials instruments ListSerials method with metrics.
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func (ms *metricsMiddleware) ListSerials(ctx context.Context, token, thingID string, offset, limit uint64) (certs.Page, error) {
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defer func(begin time.Time) {
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ms.counter.With("method", "list_serials").Add(1)
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ms.latency.With("method", "list_serials").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return ms.svc.ListSerials(ctx, token, thingID, offset, limit)
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}
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// ViewCert instruments ViewCert method with metrics.
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func (ms *metricsMiddleware) ViewCert(ctx context.Context, token, serialID string) (certs.Cert, error) {
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defer func(begin time.Time) {
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ms.counter.With("method", "view_cert").Add(1)
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ms.latency.With("method", "view_cert").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return ms.svc.ViewCert(ctx, token, serialID)
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}
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// RevokeCert instruments RevokeCert method with metrics.
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func (ms *metricsMiddleware) RevokeCert(ctx context.Context, token, thingID string) (certs.Revoke, error) {
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defer func(begin time.Time) {
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ms.counter.With("method", "revoke_cert").Add(1)
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ms.latency.With("method", "revoke_cert").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return ms.svc.RevokeCert(ctx, token, thingID)
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}
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