/
metrics.go
241 lines (186 loc) · 5.94 KB
/
metrics.go
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
package http
import (
"context"
"github.com/go-kit/kit/metrics"
"github.com/mainflux/mainflux"
"github.com/ns1labs/orb/pkg/errors"
"github.com/ns1labs/orb/sinks"
"github.com/ns1labs/orb/sinks/backend"
"time"
)
var _ sinks.SinkService = (*metricsMiddleware)(nil)
type metricsMiddleware struct {
auth mainflux.AuthServiceClient
counter metrics.Counter
latency metrics.Histogram
svc sinks.SinkService
}
func (m metricsMiddleware) ChangeSinkStateInternal(ctx context.Context, sinkID string, msg string, ownerID string, state sinks.State) error {
defer func(begin time.Time) {
labels := []string{
"method", "changeSinkStateInternal",
"owner_id", ownerID,
"sink_id", sinkID,
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ChangeSinkStateInternal(ctx, sinkID, msg, ownerID, state)
}
func (m metricsMiddleware) CreateSink(ctx context.Context, token string, s sinks.Sink) (sink sinks.Sink, _ error) {
ownerID, err := m.identify(token)
if err != nil {
return sinks.Sink{}, err
}
defer func(begin time.Time) {
labels := []string{
"method", "createSink",
"owner_id", ownerID,
"sink_id", sink.ID,
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.CreateSink(ctx, token, s)
}
func (m metricsMiddleware) UpdateSink(ctx context.Context, token string, s sinks.Sink) (err error) {
defer func(begin time.Time) {
labels := []string{
"method", "updateSink",
"owner_id", s.MFOwnerID,
"sink_id", s.ID,
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.UpdateSink(ctx, token, s)
}
func (m metricsMiddleware) ListSinks(ctx context.Context, token string, pm sinks.PageMetadata) (sink sinks.Page, err error) {
ownerID, err := m.identify(token)
if err != nil {
return sinks.Page{}, err
}
defer func(begin time.Time) {
labels := []string{
"method", "listSinks",
"owner_id", ownerID,
"sink_id", "",
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ListSinks(ctx, token, pm)
}
func (m metricsMiddleware) ListBackends(ctx context.Context, token string) (_ []string, err error) {
ownerID, err := m.identify(token)
if err != nil {
return nil, err
}
defer func(begin time.Time) {
labels := []string{
"method", "listBackends",
"owner_id", ownerID,
"sink_id", "",
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ListBackends(ctx, token)
}
func (m metricsMiddleware) ViewBackend(ctx context.Context, token string, key string) (_ backend.Backend, err error) {
ownerID, err := m.identify(token)
if err != nil {
return nil, err
}
defer func(begin time.Time) {
labels := []string{
"method", "viewBackend",
"owner_id", ownerID,
"sink_id", "",
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ViewBackend(ctx, token, key)
}
func (m metricsMiddleware) ViewSink(ctx context.Context, token string, key string) (sinks.Sink, error) {
ownerID, err := m.identify(token)
if err != nil {
return sinks.Sink{}, err
}
defer func(begin time.Time) {
labels := []string{
"method", "viewSink",
"owner_id", ownerID,
"sink_id", key,
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ViewSink(ctx, token, key)
}
func (m metricsMiddleware) ViewSinkInternal(ctx context.Context, ownerID string, key string) (sinks.Sink, error) {
defer func(begin time.Time) {
labels := []string{
"method", "viewSinkInternal",
"owner_id", ownerID,
"sink_id", key,
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ViewSinkInternal(ctx, ownerID, key)
}
func (m metricsMiddleware) DeleteSink(ctx context.Context, token string, id string) (err error) {
ownerID, err := m.identify(token)
if err != nil {
return err
}
defer func(begin time.Time) {
labels := []string{
"method", "deleteSink",
"owner_id", ownerID,
"sink_id", id,
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.DeleteSink(ctx, token, id)
}
func (m metricsMiddleware) ValidateSink(ctx context.Context, token string, s sinks.Sink) (sinks.Sink, error) {
ownerID, err := m.identify(token)
if err != nil {
return sinks.Sink{}, err
}
defer func(begin time.Time) {
labels := []string{
"method", "validateSink",
"owner_id", ownerID,
"sink_id", "",
}
m.counter.With(labels...).Add(1)
m.latency.With(labels...).Observe(float64(time.Since(begin).Microseconds()))
}(time.Now())
return m.svc.ValidateSink(ctx, token, s)
}
func (m metricsMiddleware) identify(token string) (string, error) {
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
res, err := m.auth.Identify(ctx, &mainflux.Token{Value: token})
if err != nil {
return "", errors.Wrap(errors.ErrUnauthorizedAccess, err)
}
return res.GetId(), nil
}
// MetricsMiddleware instruments core service by tracking request count and latency.
func MetricsMiddleware(auth mainflux.AuthServiceClient, svc sinks.SinkService, counter metrics.Counter, latency metrics.Histogram) sinks.SinkService {
return &metricsMiddleware{
auth: auth,
counter: counter,
latency: latency,
svc: svc,
}
}