242 lines
8.0 KiB
Go
242 lines
8.0 KiB
Go
// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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// Package main contains things main function to start the things service.
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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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"time"
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"github.com/go-chi/chi/v5"
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"github.com/go-redis/redis/v8"
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"github.com/jmoiron/sqlx"
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callhome "github.com/mainflux/callhome/pkg/client"
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"github.com/mainflux/mainflux"
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"github.com/mainflux/mainflux/internal"
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authclient "github.com/mainflux/mainflux/internal/clients/grpc/auth"
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jaegerclient "github.com/mainflux/mainflux/internal/clients/jaeger"
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pgclient "github.com/mainflux/mainflux/internal/clients/postgres"
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redisclient "github.com/mainflux/mainflux/internal/clients/redis"
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"github.com/mainflux/mainflux/internal/env"
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mfgroups "github.com/mainflux/mainflux/internal/groups"
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gapi "github.com/mainflux/mainflux/internal/groups/api"
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gpostgres "github.com/mainflux/mainflux/internal/groups/postgres"
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gtracing "github.com/mainflux/mainflux/internal/groups/tracing"
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"github.com/mainflux/mainflux/internal/postgres"
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"github.com/mainflux/mainflux/internal/server"
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grpcserver "github.com/mainflux/mainflux/internal/server/grpc"
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httpserver "github.com/mainflux/mainflux/internal/server/http"
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mflog "github.com/mainflux/mainflux/logger"
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"github.com/mainflux/mainflux/pkg/groups"
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"github.com/mainflux/mainflux/pkg/uuid"
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"github.com/mainflux/mainflux/things"
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"github.com/mainflux/mainflux/things/api"
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grpcapi "github.com/mainflux/mainflux/things/api/grpc"
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httpapi "github.com/mainflux/mainflux/things/api/http"
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thcache "github.com/mainflux/mainflux/things/cache"
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thevents "github.com/mainflux/mainflux/things/events"
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thingspg "github.com/mainflux/mainflux/things/postgres"
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localusers "github.com/mainflux/mainflux/things/standalone"
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ctracing "github.com/mainflux/mainflux/things/tracing"
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"go.opentelemetry.io/otel/trace"
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"golang.org/x/sync/errgroup"
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"google.golang.org/grpc"
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"google.golang.org/grpc/reflection"
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)
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const (
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svcName = "things"
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envPrefixDB = "MF_THINGS_DB_"
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envPrefixHTTP = "MF_THINGS_HTTP_"
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envPrefixGRPC = "MF_THINGS_AUTH_GRPC_"
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defDB = "things"
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defSvcHTTPPort = "9000"
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defSvcAuthGRPCPort = "7000"
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)
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type config struct {
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LogLevel string `env:"MF_THINGS_LOG_LEVEL" envDefault:"info"`
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StandaloneID string `env:"MF_THINGS_STANDALONE_ID" envDefault:""`
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StandaloneToken string `env:"MF_THINGS_STANDALONE_TOKEN" envDefault:""`
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JaegerURL string `env:"MF_JAEGER_URL" envDefault:"http://jaeger:14268/api/traces"`
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CacheKeyDuration string `env:"MF_THINGS_CACHE_KEY_DURATION" envDefault:"10m"`
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SendTelemetry bool `env:"MF_SEND_TELEMETRY" envDefault:"true"`
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InstanceID string `env:"MF_THINGS_INSTANCE_ID" envDefault:""`
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ESURL string `env:"MF_THINGS_ES_URL" envDefault:"redis://localhost:6379/0"`
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CacheURL string `env:"MF_THINGS_CACHE_URL" envDefault:"redis://localhost:6379/0"`
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TraceRatio float64 `env:"MF_JAEGER_TRACE_RATIO" envDefault:"1.0"`
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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 new things configuration
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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)
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}
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logger, err := mflog.New(os.Stdout, cfg.LogLevel)
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if err != nil {
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log.Fatalf("failed to init logger: %s", err)
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}
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var exitCode int
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defer mflog.ExitWithError(&exitCode)
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if cfg.InstanceID == "" {
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if cfg.InstanceID, err = uuid.New().ID(); err != nil {
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logger.Error(fmt.Sprintf("failed to generate instanceID: %s", err))
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exitCode = 1
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return
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}
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}
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// Create new database for things
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dbConfig := pgclient.Config{Name: defDB}
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if err := dbConfig.LoadEnv(envPrefixDB); err != nil {
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logger.Fatal(err.Error())
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}
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tm := thingspg.Migration()
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gm := gpostgres.Migration()
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tm.Migrations = append(tm.Migrations, gm.Migrations...)
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db, err := pgclient.SetupWithConfig(envPrefixDB, *tm, dbConfig)
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if err != nil {
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logger.Error(err.Error())
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exitCode = 1
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return
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}
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defer db.Close()
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tp, err := jaegerclient.NewProvider(svcName, cfg.JaegerURL, cfg.InstanceID, cfg.TraceRatio)
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if err != nil {
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logger.Error(fmt.Sprintf("Failed to init Jaeger: %s", err))
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exitCode = 1
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return
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}
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defer func() {
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if err := tp.Shutdown(ctx); err != nil {
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logger.Error(fmt.Sprintf("Error shutting down tracer provider: %v", err))
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}
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}()
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tracer := tp.Tracer(svcName)
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// Setup new redis cache client
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cacheclient, err := redisclient.Connect(cfg.CacheURL)
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if err != nil {
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logger.Error(err.Error())
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exitCode = 1
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return
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}
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defer cacheclient.Close()
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var auth mainflux.AuthServiceClient
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switch cfg.StandaloneID != "" && cfg.StandaloneToken != "" {
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case true:
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auth = localusers.NewAuthService(cfg.StandaloneID, cfg.StandaloneToken)
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logger.Info("Using standalone auth service")
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default:
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authServiceClient, authHandler, err := authclient.Setup(svcName)
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if err != nil {
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logger.Error(err.Error())
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exitCode = 1
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return
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}
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defer authHandler.Close()
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auth = authServiceClient
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logger.Info("Successfully connected to auth grpc server " + authHandler.Secure())
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}
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csvc, gsvc, err := newService(ctx, db, dbConfig, auth, cacheclient, cfg.CacheKeyDuration, cfg.ESURL, tracer, logger)
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if err != nil {
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logger.Error(fmt.Sprintf("failed to create services: %s", err))
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exitCode = 1
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return
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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}); err != nil {
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logger.Error(fmt.Sprintf("failed to load %s HTTP server configuration : %s", svcName, err))
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exitCode = 1
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return
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}
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mux := chi.NewRouter()
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httpSvc := httpserver.New(ctx, cancel, "things-clients", httpServerConfig, httpapi.MakeHandler(csvc, gsvc, mux, logger, cfg.InstanceID), logger)
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grpcServerConfig := server.Config{Port: defSvcAuthGRPCPort}
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if err := env.Parse(&grpcServerConfig, env.Options{Prefix: envPrefixGRPC}); err != nil {
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logger.Error(fmt.Sprintf("failed to load %s gRPC server configuration : %s", svcName, err))
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exitCode = 1
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return
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}
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regiterAuthzServer := func(srv *grpc.Server) {
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reflection.Register(srv)
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mainflux.RegisterAuthzServiceServer(srv, grpcapi.NewServer(csvc))
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}
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gs := grpcserver.New(ctx, cancel, svcName, grpcServerConfig, regiterAuthzServer, logger)
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if cfg.SendTelemetry {
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chc := callhome.New(svcName, mainflux.Version, logger, cancel)
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go chc.CallHome(ctx)
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}
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// Start all servers
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g.Go(func() error {
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return httpSvc.Start()
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})
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g.Go(func() error {
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return gs.Start()
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})
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g.Go(func() error {
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return server.StopSignalHandler(ctx, cancel, logger, svcName, httpSvc)
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})
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if err := g.Wait(); err != nil {
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logger.Error(fmt.Sprintf("%s service terminated: %s", svcName, err))
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}
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}
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func newService(ctx context.Context, db *sqlx.DB, dbConfig pgclient.Config, auth mainflux.AuthServiceClient, cacheClient *redis.Client, keyDuration, esURL string, tracer trace.Tracer, logger mflog.Logger) (things.Service, groups.Service, error) {
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database := postgres.NewDatabase(db, dbConfig, tracer)
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cRepo := thingspg.NewRepository(database)
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gRepo := gpostgres.New(database)
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idp := uuid.New()
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kDuration, err := time.ParseDuration(keyDuration)
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if err != nil {
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logger.Error(fmt.Sprintf("failed to parse cache key duration: %s", err.Error()))
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}
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thingCache := thcache.NewCache(cacheClient, kDuration)
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csvc := things.NewService(auth, cRepo, gRepo, thingCache, idp)
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gsvc := mfgroups.NewService(gRepo, idp, auth)
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csvc, err = thevents.NewEventStoreMiddleware(ctx, csvc, esURL)
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if err != nil {
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return nil, nil, err
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}
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csvc = ctracing.New(csvc, tracer)
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csvc = api.LoggingMiddleware(csvc, logger)
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counter, latency := internal.MakeMetrics(svcName, "api")
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csvc = api.MetricsMiddleware(csvc, counter, latency)
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gsvc = gtracing.New(gsvc, tracer)
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gsvc = gapi.LoggingMiddleware(gsvc, logger)
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counter, latency = internal.MakeMetrics(fmt.Sprintf("%s_groups", svcName), "api")
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gsvc = gapi.MetricsMiddleware(gsvc, counter, latency)
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return csvc, gsvc, err
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}
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