113 lines
3.6 KiB
Go
113 lines
3.6 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/opcua"
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)
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var _ opcua.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 opcua.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 opcua.Service, counter metrics.Counter, latency metrics.Histogram) opcua.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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func (mm *metricsMiddleware) CreateThing(ctx context.Context, mfxDevID, opcuaNodeID string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "create_thing").Add(1)
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mm.latency.With("method", "create_thing").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.CreateThing(ctx, mfxDevID, opcuaNodeID)
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}
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func (mm *metricsMiddleware) UpdateThing(ctx context.Context, mfxDevID, opcuaNodeID string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "update_thing").Add(1)
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mm.latency.With("method", "update_thing").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.UpdateThing(ctx, mfxDevID, opcuaNodeID)
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}
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func (mm *metricsMiddleware) RemoveThing(ctx context.Context, mfxDevID string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "remove_thing").Add(1)
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mm.latency.With("method", "remove_thing").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.RemoveThing(ctx, mfxDevID)
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}
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func (mm *metricsMiddleware) CreateChannel(ctx context.Context, mfxChanID, opcuaServerURI string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "create_channel").Add(1)
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mm.latency.With("method", "create_channel").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.CreateChannel(ctx, mfxChanID, opcuaServerURI)
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}
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func (mm *metricsMiddleware) UpdateChannel(ctx context.Context, mfxChanID, opcuaServerURI string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "update_channel").Add(1)
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mm.latency.With("method", "update_channel").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.UpdateChannel(ctx, mfxChanID, opcuaServerURI)
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}
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func (mm *metricsMiddleware) RemoveChannel(ctx context.Context, mfxChanID string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "remove_channel").Add(1)
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mm.latency.With("method", "remove_channel").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.RemoveChannel(ctx, mfxChanID)
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}
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func (mm *metricsMiddleware) ConnectThing(ctx context.Context, mfxChanID, mfxThingID string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "connect_thing").Add(1)
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mm.latency.With("method", "connect_thing").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.ConnectThing(ctx, mfxChanID, mfxThingID)
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}
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func (mm *metricsMiddleware) DisconnectThing(ctx context.Context, mfxChanID, mfxThingID string) error {
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defer func(begin time.Time) {
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mm.counter.With("method", "disconnect_thing").Add(1)
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mm.latency.With("method", "disconnect_thing").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.DisconnectThing(ctx, mfxChanID, mfxThingID)
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}
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func (mm *metricsMiddleware) Browse(ctx context.Context, serverURI, namespace, identifier string) ([]opcua.BrowsedNode, error) {
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defer func(begin time.Time) {
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mm.counter.With("method", "browse").Add(1)
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mm.latency.With("method", "browse").Observe(time.Since(begin).Seconds())
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}(time.Now())
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return mm.svc.Browse(ctx, serverURI, namespace, identifier)
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}
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