mirror of
https://github.com/mainflux/mainflux.git
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108077a356
* initial commit Signed-off-by: aryan <aryangodara03@gmail.com> * return func() from fatal function Signed-off-by: aryan <aryangodara03@gmail.com> * use log.fatal in cassandra setup_tests Signed-off-by: aryan <aryangodara03@gmail.com> * removed fatal log level Signed-off-by: aryan <aryangodara03@gmail.com> --------- Signed-off-by: aryan <aryangodara03@gmail.com>
99 lines
2.9 KiB
Go
99 lines
2.9 KiB
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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package main
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import (
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"context"
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"fmt"
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"log"
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"os"
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"github.com/jmoiron/sqlx"
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"github.com/mainflux/mainflux/consumers"
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"github.com/mainflux/mainflux/consumers/writers/api"
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writerPg "github.com/mainflux/mainflux/consumers/writers/postgres"
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"github.com/mainflux/mainflux/internal"
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pgClient "github.com/mainflux/mainflux/internal/clients/postgres"
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"github.com/mainflux/mainflux/internal/env"
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"github.com/mainflux/mainflux/internal/server"
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httpserver "github.com/mainflux/mainflux/internal/server/http"
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"github.com/mainflux/mainflux/logger"
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"github.com/mainflux/mainflux/pkg/messaging/brokers"
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"golang.org/x/sync/errgroup"
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)
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const (
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svcName = "postgres-writer"
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envPrefix = "MF_POSTGRES_WRITER_"
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envPrefixHttp = "MF_POSTGRES_WRITER_HTTP_"
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defDB = "messages"
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defSvcHttpPort = "8180"
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)
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type config struct {
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LogLevel string `env:"MF_POSTGRES_WRITER_LOG_LEVEL" envDefault:"info"`
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ConfigPath string `env:"MF_POSTGRES_WRITER_CONFIG_PATH" envDefault:"/config.toml"`
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BrokerURL string `env:"MF_BROKER_URL" envDefault:"nats://localhost:4222"`
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}
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func main() {
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ctx, cancel := context.WithCancel(context.Background())
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g, ctx := errgroup.WithContext(ctx)
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cfg := config{}
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if err := env.Parse(&cfg); err != nil {
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log.Fatalf("failed to load %s configuration : %s", svcName, err.Error())
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}
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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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pubSub, err := brokers.NewPubSub(cfg.BrokerURL, "", logger)
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if err != nil {
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logger.Fatal(fmt.Sprintf("failed to connect to message broker: %s", err.Error()))()
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}
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defer pubSub.Close()
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dbConfig := pgClient.Config{Name: defDB}
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db, err := pgClient.SetupWithConfig(envPrefix, *writerPg.Migration(), dbConfig)
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if err != nil {
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logger.Fatal(err.Error())()
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}
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defer db.Close()
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repo := newService(db, logger)
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if err = consumers.Start(svcName, pubSub, repo, cfg.ConfigPath, logger); err != nil {
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logger.Fatal(fmt.Sprintf("failed to create Postgres writer: %s", err.Error()))()
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}
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httpServerConfig := server.Config{Port: defSvcHttpPort}
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if err := env.Parse(&httpServerConfig, env.Options{Prefix: envPrefixHttp, AltPrefix: envPrefix}); err != nil {
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logger.Fatal(fmt.Sprintf("failed to load %s HTTP server configuration : %s", svcName, err.Error()))()
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}
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hs := httpserver.New(ctx, cancel, svcName, httpServerConfig, api.MakeHandler(svcName), logger)
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g.Go(func() error {
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return hs.Start()
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})
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g.Go(func() error {
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return server.StopSignalHandler(ctx, cancel, logger, svcName, hs)
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})
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if err := g.Wait(); err != nil {
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logger.Error(fmt.Sprintf("Postgres writer service terminated: %s", err))
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}
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}
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func newService(db *sqlx.DB, logger logger.Logger) consumers.Consumer {
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svc := writerPg.New(db)
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svc = api.LoggingMiddleware(svc, logger)
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counter, latency := internal.MakeMetrics("postgres", "message_writer")
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svc = api.MetricsMiddleware(svc, counter, latency)
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return svc
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}
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