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>
111 lines
3.2 KiB
Go
111 lines
3.2 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/gocql/gocql"
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"github.com/mainflux/mainflux/internal"
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cassandraClient "github.com/mainflux/mainflux/internal/clients/cassandra"
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authClient "github.com/mainflux/mainflux/internal/clients/grpc/auth"
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thingsClient "github.com/mainflux/mainflux/internal/clients/grpc/things"
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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/readers"
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"github.com/mainflux/mainflux/readers/api"
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"github.com/mainflux/mainflux/readers/cassandra"
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"golang.org/x/sync/errgroup"
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)
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const (
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svcName = "cassandra-reader"
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envPrefix = "MF_CASSANDRA_READER_"
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envPrefixHttp = "MF_CASSANDRA_READER_HTTP_"
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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_CASSANDRA_READER_LOG_LEVEL" envDefault:"info"`
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JaegerURL string `env:"MF_JAEGER_URL" envDefault:"localhost:6831"`
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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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// Create cassandra reader service configurations
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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 service 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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// Create new thing grpc client
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tc, tcHandler, err := thingsClient.Setup(envPrefix, cfg.JaegerURL)
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if err != nil {
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logger.Fatal(err.Error())()
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}
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defer tcHandler.Close()
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logger.Info("Successfully connected to things grpc server " + tcHandler.Secure())
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// Create new auth grpc client
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auth, authHandler, err := authClient.Setup(envPrefix, cfg.JaegerURL)
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if err != nil {
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logger.Fatal(err.Error())()
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}
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defer authHandler.Close()
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logger.Info("Successfully connected to auth grpc server " + authHandler.Secure())
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// Create new cassandra client
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csdSession, err := cassandraClient.Setup(envPrefix)
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if err != nil {
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logger.Fatal(err.Error())()
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}
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defer csdSession.Close()
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// Create new service
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repo := newService(csdSession, logger)
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// Create new http server
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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(repo, tc, auth, svcName, logger), logger)
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// Start servers
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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("Cassandra reader service terminated: %s", err))
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}
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}
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func newService(csdSession *gocql.Session, logger logger.Logger) readers.MessageRepository {
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repo := cassandra.New(csdSession)
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repo = api.LoggingMiddleware(repo, logger)
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counter, latency := internal.MakeMetrics("cassandra", "message_reader")
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repo = api.MetricsMiddleware(repo, counter, latency)
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return repo
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}
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