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logging.go
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logging.go
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// Copyright (c) Mainflux
// SPDX-License-Identifier: Apache-2.0
//go:build !test
package api
import (
"context"
"fmt"
"time"
"github.com/MainfluxLabs/mainflux/coap"
log "github.com/MainfluxLabs/mainflux/logger"
"github.com/MainfluxLabs/mainflux/pkg/messaging"
)
var _ coap.Service = (*loggingMiddleware)(nil)
type loggingMiddleware struct {
logger log.Logger
svc coap.Service
}
// LoggingMiddleware adds logging facilities to the adapter.
func LoggingMiddleware(svc coap.Service, logger log.Logger) coap.Service {
return &loggingMiddleware{logger, svc}
}
func (lm *loggingMiddleware) Publish(ctx context.Context, key string, msg messaging.Message) (err error) {
defer func(begin time.Time) {
destChannel := msg.Channel
if msg.Subtopic != "" {
destChannel = fmt.Sprintf("%s.%s", destChannel, msg.Subtopic)
}
message := fmt.Sprintf("Method publish to %s took %s to complete", destChannel, time.Since(begin))
if err != nil {
lm.logger.Warn(fmt.Sprintf("%s with error: %s.", message, err))
return
}
lm.logger.Info(fmt.Sprintf("%s without errors.", message))
}(time.Now())
return lm.svc.Publish(ctx, key, msg)
}
func (lm *loggingMiddleware) Subscribe(ctx context.Context, key, chanID, subtopic string, c coap.Client) (err error) {
defer func(begin time.Time) {
destChannel := chanID
if subtopic != "" {
destChannel = fmt.Sprintf("%s.%s", destChannel, subtopic)
}
message := fmt.Sprintf("Method subscribe to %s for client %s took %s to complete", destChannel, c.Token(), time.Since(begin))
if err != nil {
lm.logger.Warn(fmt.Sprintf("%s with error: %s.", message, err))
return
}
lm.logger.Info(fmt.Sprintf("%s without errors.", message))
}(time.Now())
return lm.svc.Subscribe(ctx, key, chanID, subtopic, c)
}
func (lm *loggingMiddleware) Unsubscribe(ctx context.Context, key, chanID, subtopic, token string) (err error) {
defer func(begin time.Time) {
destChannel := chanID
if subtopic != "" {
destChannel = fmt.Sprintf("%s.%s", destChannel, subtopic)
}
message := fmt.Sprintf("Method unsubscribe for the client %s from the channel %s took %s to complete", token, destChannel, time.Since(begin))
if err != nil {
lm.logger.Warn(fmt.Sprintf("%s with error: %s.", message, err))
return
}
lm.logger.Info(fmt.Sprintf("%s without errors.", message))
}(time.Now())
return lm.svc.Unsubscribe(ctx, key, chanID, subtopic, token)
}