mirror of
https://github.com/mainflux/mainflux.git
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6600d26ef1
* Adding an option to select log level Signed-off-by: Michael Finley <Michael.Finley@target.com> * making error default log level Signed-off-by: Michael Finley <Michael.Finley@target.com> * removing go-kit/levels and expanding levels wrapper Signed-off-by: Michael Finley <Michael.Finley@target.com> * refactoring test cases and using log.fatal Signed-off-by: Michael Finley <Michael.Finley@target.com> * logger.new no longer accpets enum and now accepts string for level Signed-off-by: Michael Finley <Michael.Finley@target.com> * level_test.go refactor to compare error Signed-off-by: Michael Finley <Michael.Finley@target.com> * Updating the ws README Signed-off-by: Michael Finley <Michael.Finley@target.com> * Adding log level for mqtt Adapter Signed-off-by: Michael Finley <Michael.Finley@target.com>
103 lines
2.3 KiB
Go
103 lines
2.3 KiB
Go
//
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// Copyright (c) 2018
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// Mainflux
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package main
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import (
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"fmt"
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"log"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"github.com/mainflux/mainflux"
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"github.com/mainflux/mainflux/logger"
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"github.com/mainflux/mainflux/normalizer"
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"github.com/mainflux/mainflux/normalizer/api"
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"github.com/mainflux/mainflux/normalizer/nats"
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broker "github.com/nats-io/go-nats"
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kitprometheus "github.com/go-kit/kit/metrics/prometheus"
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stdprometheus "github.com/prometheus/client_golang/prometheus"
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)
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const (
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defNatsURL string = broker.DefaultURL
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defLogLevel string = "error"
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defPort string = "8180"
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envNatsURL string = "MF_NATS_URL"
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envLogLevel string = "MF_NORMALIZER_LOG_LEVEL"
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envPort string = "MF_NORMALIZER_PORT"
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)
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type config struct {
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NatsURL string
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LogLevel string
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Port string
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}
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func main() {
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cfg := loadConfig()
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logger, err := logger.New(os.Stdout, cfg.LogLevel)
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if err != nil {
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log.Fatalf(err.Error())
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}
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nc, err := broker.Connect(cfg.NatsURL)
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if err != nil {
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logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
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os.Exit(1)
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}
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defer nc.Close()
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svc := normalizer.New()
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svc = api.LoggingMiddleware(svc, logger)
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svc = api.MetricsMiddleware(
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svc,
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kitprometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: "normalizer",
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Subsystem: "api",
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Name: "request_count",
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Help: "Number of requests received.",
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}, []string{"method"}),
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kitprometheus.NewSummaryFrom(stdprometheus.SummaryOpts{
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Namespace: "normalizer",
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Subsystem: "api",
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Name: "request_latency_microseconds",
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Help: "Total duration of requests in microseconds.",
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}, []string{"method"}),
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)
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errs := make(chan error, 2)
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go func() {
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p := fmt.Sprintf(":%s", cfg.Port)
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logger.Info(fmt.Sprintf("Normalizer service started, exposed port %s", cfg.Port))
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errs <- http.ListenAndServe(p, api.MakeHandler())
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}()
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go func() {
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c := make(chan os.Signal)
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signal.Notify(c, syscall.SIGINT)
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errs <- fmt.Errorf("%s", <-c)
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}()
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nats.Subscribe(svc, nc, logger)
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err = <-errs
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logger.Error(fmt.Sprintf("Normalizer service terminated: %s", err))
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}
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func loadConfig() config {
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return config{
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NatsURL: mainflux.Env(envNatsURL, defNatsURL),
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LogLevel: mainflux.Env(envLogLevel, defLogLevel),
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Port: mainflux.Env(envPort, defPort),
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}
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}
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