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* Fix linting errors Signed-off-by: Rodney Osodo <28790446+rodneyosodo@users.noreply.github.com> * feat(linters): add ineffassign linter This commit adds the `ineffassign` linter to the project's `.golangci.yml` configuration file. The `ineffassign` linter helps identify and flag assignments to variables that are never used, helping to improve code quality and maintainability. Signed-off-by: Rodney Osodo <28790446+rodneyosodo@users.noreply.github.com> * Add extra linters Signed-off-by: Rodney Osodo <28790446+rodneyosodo@users.noreply.github.com> * feat(golangci): Add header check - Added goheader check to ensure all files have license headers - Added build tags for "nats" in the .golangci.yml file to include the necessary dependencies for the "nats" package during the build process. - Also, increased the maximum number of issues per linter and the maximum number of same issues reported by the linter to improve the code quality analysis. Signed-off-by: Rodney Osodo <28790446+rodneyosodo@users.noreply.github.com> * feat(.golangci.yml): Add new linters Add the following new linters to the .golangci.yml configuration file: - asasalint - asciicheck - bidichk - contextcheck - decorder - dogsled - errchkjson - errname - execinquery - exportloopref - ginkgolinter - gocheckcompilerdirectives These linters will help improve code quality and catch potential issues during the code review process. Signed-off-by: Rodney Osodo <28790446+rodneyosodo@users.noreply.github.com> --------- Signed-off-by: Rodney Osodo <28790446+rodneyosodo@users.noreply.github.com>
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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package mqtt
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// LoraSubscribe subscribe to lora server messages.
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import (
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"context"
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"encoding/json"
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"fmt"
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"time"
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mqtt "github.com/eclipse/paho.mqtt.golang"
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"github.com/mainflux/mainflux/logger"
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"github.com/mainflux/mainflux/lora"
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)
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// Subscriber represents the MQTT broker.
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type Subscriber interface {
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// Subscribes to given subject and receives events.
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Subscribe(string) error
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}
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type broker struct {
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svc lora.Service
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client mqtt.Client
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logger logger.Logger
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timeout time.Duration
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}
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// NewBroker returns new MQTT broker instance.
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func NewBroker(svc lora.Service, client mqtt.Client, t time.Duration, log logger.Logger) Subscriber {
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return broker{
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svc: svc,
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client: client,
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logger: log,
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timeout: t,
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}
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}
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// Subscribe subscribes to the Lora MQTT message broker.
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func (b broker) Subscribe(subject string) error {
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s := b.client.Subscribe(subject, 0, b.handleMsg)
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if err := s.Error(); s.WaitTimeout(b.timeout) && err != nil {
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return err
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}
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return nil
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}
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// handleMsg triggered when new message is received on Lora MQTT broker.
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func (b broker) handleMsg(c mqtt.Client, msg mqtt.Message) {
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m := lora.Message{}
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if err := json.Unmarshal(msg.Payload(), &m); err != nil {
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b.logger.Warn(fmt.Sprintf("Failed to unmarshal message: %s", err.Error()))
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return
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}
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if err := b.svc.Publish(context.Background(), &m); err != nil {
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b.logger.Error(fmt.Sprintf("got error while publishing messages: %s", err))
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}
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}
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