/
main.go
209 lines (176 loc) · 6.55 KB
/
main.go
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// Copyright (c) Abstract Machines
// SPDX-License-Identifier: Apache-2.0
// Package main contains bootstrap main function to start the bootstrap service.
package main
import (
"context"
"fmt"
"log"
"log/slog"
"net/url"
"os"
chclient "github.com/absmach/callhome/pkg/client"
"github.com/absmach/magistrala"
"github.com/absmach/magistrala/bootstrap"
"github.com/absmach/magistrala/bootstrap/api"
"github.com/absmach/magistrala/bootstrap/events/consumer"
"github.com/absmach/magistrala/bootstrap/events/producer"
bootstrappg "github.com/absmach/magistrala/bootstrap/postgres"
"github.com/absmach/magistrala/bootstrap/tracing"
"github.com/absmach/magistrala/internal"
"github.com/absmach/magistrala/internal/clients/jaeger"
pgclient "github.com/absmach/magistrala/internal/clients/postgres"
"github.com/absmach/magistrala/internal/postgres"
"github.com/absmach/magistrala/internal/server"
httpserver "github.com/absmach/magistrala/internal/server/http"
mglog "github.com/absmach/magistrala/logger"
"github.com/absmach/magistrala/pkg/auth"
"github.com/absmach/magistrala/pkg/events/store"
mgsdk "github.com/absmach/magistrala/pkg/sdk/go"
"github.com/absmach/magistrala/pkg/uuid"
"github.com/caarlos0/env/v10"
"github.com/jmoiron/sqlx"
"go.opentelemetry.io/otel/trace"
"golang.org/x/sync/errgroup"
)
const (
svcName = "bootstrap"
envPrefixDB = "MG_BOOTSTRAP_DB_"
envPrefixHTTP = "MG_BOOTSTRAP_HTTP_"
envPrefixAuth = "MG_AUTH_GRPC_"
defDB = "bootstrap"
defSvcHTTPPort = "9013"
thingsStream = "magistrala.things"
streamID = "magistrala.bootstrap"
)
type config struct {
LogLevel string `env:"MG_BOOTSTRAP_LOG_LEVEL" envDefault:"info"`
EncKey string `env:"MG_BOOTSTRAP_ENCRYPT_KEY" envDefault:"12345678910111213141516171819202"`
ESConsumerName string `env:"MG_BOOTSTRAP_EVENT_CONSUMER" envDefault:"bootstrap"`
ThingsURL string `env:"MG_THINGS_URL" envDefault:"http://localhost:9000"`
JaegerURL url.URL `env:"MG_JAEGER_URL" envDefault:"http://localhost:14268/api/traces"`
SendTelemetry bool `env:"MG_SEND_TELEMETRY" envDefault:"true"`
InstanceID string `env:"MG_BOOTSTRAP_INSTANCE_ID" envDefault:""`
ESURL string `env:"MG_ES_URL" envDefault:"nats://localhost:4222"`
TraceRatio float64 `env:"MG_JAEGER_TRACE_RATIO" envDefault:"1.0"`
}
func main() {
ctx, cancel := context.WithCancel(context.Background())
g, ctx := errgroup.WithContext(ctx)
cfg := config{}
if err := env.Parse(&cfg); err != nil {
log.Fatalf("failed to load %s configuration : %s", svcName, err)
}
logger, err := mglog.New(os.Stdout, cfg.LogLevel)
if err != nil {
log.Fatalf("failed to init logger: %s", err.Error())
}
var exitCode int
defer mglog.ExitWithError(&exitCode)
if cfg.InstanceID == "" {
if cfg.InstanceID, err = uuid.New().ID(); err != nil {
logger.Error(fmt.Sprintf("failed to generate instanceID: %s", err))
exitCode = 1
return
}
}
// Create new postgres client
dbConfig := pgclient.Config{Name: defDB}
if err := env.ParseWithOptions(&dbConfig, env.Options{Prefix: envPrefixDB}); err != nil {
logger.Error(err.Error())
}
db, err := pgclient.Setup(dbConfig, *bootstrappg.Migration())
if err != nil {
logger.Error(err.Error())
exitCode = 1
return
}
defer db.Close()
authConfig := auth.Config{}
if err := env.ParseWithOptions(&authConfig, env.Options{Prefix: envPrefixAuth}); err != nil {
logger.Error(fmt.Sprintf("failed to load %s auth configuration : %s", svcName, err))
exitCode = 1
return
}
authClient, authHandler, err := auth.Setup(authConfig)
if err != nil {
logger.Error(err.Error())
exitCode = 1
return
}
defer authHandler.Close()
logger.Info("Successfully connected to auth grpc server " + authHandler.Secure())
tp, err := jaeger.NewProvider(ctx, svcName, cfg.JaegerURL, cfg.InstanceID, cfg.TraceRatio)
if err != nil {
logger.Error(fmt.Sprintf("failed to init Jaeger: %s", err))
exitCode = 1
return
}
defer func() {
if err := tp.Shutdown(ctx); err != nil {
logger.Error(fmt.Sprintf("error shutting down tracer provider: %v", err))
}
}()
tracer := tp.Tracer(svcName)
// Create new service
svc, err := newService(ctx, authClient, db, tracer, logger, cfg, dbConfig)
if err != nil {
logger.Error(fmt.Sprintf("failed to create %s service: %s", svcName, err))
exitCode = 1
return
}
if err = subscribeToThingsES(ctx, svc, cfg, logger); err != nil {
logger.Error(fmt.Sprintf("failed to subscribe to things event store: %s", err))
exitCode = 1
return
}
httpServerConfig := server.Config{Port: defSvcHTTPPort}
if err := env.ParseWithOptions(&httpServerConfig, env.Options{Prefix: envPrefixHTTP}); err != nil {
logger.Error(fmt.Sprintf("failed to load %s HTTP server configuration : %s", svcName, err))
exitCode = 1
return
}
hs := httpserver.New(ctx, cancel, svcName, httpServerConfig, api.MakeHandler(svc, bootstrap.NewConfigReader([]byte(cfg.EncKey)), logger, cfg.InstanceID), logger)
if cfg.SendTelemetry {
chc := chclient.New(svcName, magistrala.Version, logger, cancel)
go chc.CallHome(ctx)
}
// Start servers
g.Go(func() error {
return hs.Start()
})
g.Go(func() error {
return server.StopSignalHandler(ctx, cancel, logger, svcName, hs)
})
if err := g.Wait(); err != nil {
logger.Error(fmt.Sprintf("Bootstrap service terminated: %s", err))
}
}
func newService(ctx context.Context, authClient magistrala.AuthServiceClient, db *sqlx.DB, tracer trace.Tracer, logger *slog.Logger, cfg config, dbConfig pgclient.Config) (bootstrap.Service, error) {
database := postgres.NewDatabase(db, dbConfig, tracer)
repoConfig := bootstrappg.NewConfigRepository(database, logger)
config := mgsdk.Config{
ThingsURL: cfg.ThingsURL,
}
sdk := mgsdk.NewSDK(config)
svc := bootstrap.New(authClient, repoConfig, sdk, []byte(cfg.EncKey))
publisher, err := store.NewPublisher(ctx, cfg.ESURL, streamID)
if err != nil {
return nil, err
}
svc = producer.NewEventStoreMiddleware(svc, publisher)
svc = api.LoggingMiddleware(svc, logger)
counter, latency := internal.MakeMetrics(svcName, "api")
svc = api.MetricsMiddleware(svc, counter, latency)
svc = tracing.New(svc, tracer)
return svc, nil
}
func subscribeToThingsES(ctx context.Context, svc bootstrap.Service, cfg config, logger *slog.Logger) error {
subscriber, err := store.NewSubscriber(ctx, cfg.ESURL, thingsStream, cfg.ESConsumerName, logger)
if err != nil {
return err
}
handler := consumer.NewEventHandler(svc)
logger.Info("Subscribed to Redis Event Store")
return subscriber.Subscribe(ctx, handler)
}