84 lines
2.8 KiB
Go
84 lines
2.8 KiB
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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package api
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import (
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"context"
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"fmt"
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"time"
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mflog "github.com/mainflux/mainflux/logger"
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"github.com/mainflux/mainflux/pkg/messaging"
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"github.com/mainflux/mainflux/ws"
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)
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var _ ws.Service = (*loggingMiddleware)(nil)
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type loggingMiddleware struct {
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logger mflog.Logger
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svc ws.Service
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}
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// LoggingMiddleware adds logging facilities to the websocket service.
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func LoggingMiddleware(svc ws.Service, logger mflog.Logger) ws.Service {
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return &loggingMiddleware{logger, svc}
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}
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// Publish logs the publish request. It logs the channel and subtopic(if present) and the time it took to complete the request.
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// If the request fails, it logs the error.
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func (lm *loggingMiddleware) Publish(ctx context.Context, thingKey string, msg *messaging.Message) (err error) {
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defer func(begin time.Time) {
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destChannel := msg.GetChannel()
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if msg.Subtopic != "" {
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destChannel = fmt.Sprintf("%s.%s", destChannel, msg.Subtopic)
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}
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message := fmt.Sprintf("Method publish to %s took %s to complete", destChannel, time.Since(begin))
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if err != nil {
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lm.logger.Warn(fmt.Sprintf("%s with error: %s", message, err))
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return
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}
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lm.logger.Info(fmt.Sprintf("%s without errors.", message))
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}(time.Now())
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return lm.svc.Publish(ctx, thingKey, msg)
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}
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// Subscribe logs the subscribe request. It logs the channel and subtopic(if present) and the time it took to complete the request.
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// If the request fails, it logs the error.
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func (lm *loggingMiddleware) Subscribe(ctx context.Context, thingKey, chanID, subtopic string, c *ws.Client) (err error) {
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defer func(begin time.Time) {
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destChannel := chanID
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if subtopic != "" {
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destChannel = fmt.Sprintf("%s.%s", destChannel, subtopic)
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}
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message := fmt.Sprintf("Method subscribe to channel %s took %s to complete", destChannel, time.Since(begin))
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if err != nil {
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lm.logger.Warn(fmt.Sprintf("%s with error: %s", message, err))
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return
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}
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lm.logger.Info(fmt.Sprintf("%s without errors.", message))
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}(time.Now())
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return lm.svc.Subscribe(ctx, thingKey, chanID, subtopic, c)
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}
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// Unsubscribe logs the unsubscribe request. It logs the channel and subtopic(if present) and the time it took to complete the request.
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// If the request fails, it logs the error.
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func (lm *loggingMiddleware) Unsubscribe(ctx context.Context, thingKey, chanID, subtopic string) (err error) {
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defer func(begin time.Time) {
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destChannel := chanID
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if subtopic != "" {
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destChannel = fmt.Sprintf("%s.%s", destChannel, subtopic)
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}
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message := fmt.Sprintf("Method unsubscribe from channel %s took %s to complete", destChannel, time.Since(begin))
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if err != nil {
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lm.logger.Warn(fmt.Sprintf("%s with error: %s", message, err))
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return
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}
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lm.logger.Info(fmt.Sprintf("%s without errors.", message))
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}(time.Now())
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return lm.svc.Unsubscribe(ctx, thingKey, chanID, subtopic)
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}
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