238 lines
7.1 KiB
Go
238 lines
7.1 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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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net"
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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/users/tracing"
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"google.golang.org/grpc/credentials"
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kitprometheus "github.com/go-kit/kit/metrics/prometheus"
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"github.com/jmoiron/sqlx"
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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/users"
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"github.com/mainflux/mainflux/users/api"
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grpcapi "github.com/mainflux/mainflux/users/api/grpc"
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httpapi "github.com/mainflux/mainflux/users/api/http"
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"github.com/mainflux/mainflux/users/bcrypt"
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"github.com/mainflux/mainflux/users/jwt"
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"github.com/mainflux/mainflux/users/postgres"
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opentracing "github.com/opentracing/opentracing-go"
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stdprometheus "github.com/prometheus/client_golang/prometheus"
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jconfig "github.com/uber/jaeger-client-go/config"
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"google.golang.org/grpc"
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)
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const (
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defLogLevel = "error"
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defDBHost = "localhost"
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defDBPort = "5432"
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defDBUser = "mainflux"
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defDBPass = "mainflux"
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defDBName = "users"
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defDBSSLMode = "disable"
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defDBSSLCert = ""
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defDBSSLKey = ""
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defDBSSLRootCert = ""
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defHTTPPort = "8180"
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defGRPCPort = "8181"
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defSecret = "users"
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defServerCert = ""
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defServerKey = ""
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defJaegerURL = ""
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envLogLevel = "MF_USERS_LOG_LEVEL"
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envDBHost = "MF_USERS_DB_HOST"
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envDBPort = "MF_USERS_DB_PORT"
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envDBUser = "MF_USERS_DB_USER"
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envDBPass = "MF_USERS_DB_PASS"
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envDBName = "MF_USERS_DB"
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envDBSSLMode = "MF_USERS_DB_SSL_MODE"
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envDBSSLCert = "MF_USERS_DB_SSL_CERT"
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envDBSSLKey = "MF_USERS_DB_SSL_KEY"
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envDBSSLRootCert = "MF_USERS_DB_SSL_ROOT_CERT"
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envHTTPPort = "MF_USERS_HTTP_PORT"
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envGRPCPort = "MF_USERS_GRPC_PORT"
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envSecret = "MF_USERS_SECRET"
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envServerCert = "MF_USERS_SERVER_CERT"
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envServerKey = "MF_USERS_SERVER_KEY"
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envJaegerURL = "MF_JAEGER_URL"
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)
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type config struct {
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logLevel string
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dbConfig postgres.Config
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httpPort string
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grpcPort string
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secret string
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serverCert string
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serverKey string
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jaegerURL 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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db := connectToDB(cfg.dbConfig, logger)
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defer db.Close()
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tracer, closer := initJaeger("users", cfg.jaegerURL, logger)
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defer closer.Close()
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dbTracer, dbCloser := initJaeger("users_db", cfg.jaegerURL, logger)
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defer dbCloser.Close()
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svc := newService(db, dbTracer, cfg.secret, logger)
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errs := make(chan error, 2)
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go startHTTPServer(tracer, svc, cfg.httpPort, cfg.serverCert, cfg.serverKey, logger, errs)
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go startGRPCServer(tracer, svc, cfg.grpcPort, cfg.serverCert, cfg.serverKey, logger, errs)
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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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err = <-errs
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logger.Error(fmt.Sprintf("Users service terminated: %s", err))
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}
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func loadConfig() config {
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dbConfig := postgres.Config{
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Host: mainflux.Env(envDBHost, defDBHost),
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Port: mainflux.Env(envDBPort, defDBPort),
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User: mainflux.Env(envDBUser, defDBUser),
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Pass: mainflux.Env(envDBPass, defDBPass),
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Name: mainflux.Env(envDBName, defDBName),
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SSLMode: mainflux.Env(envDBSSLMode, defDBSSLMode),
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SSLCert: mainflux.Env(envDBSSLCert, defDBSSLCert),
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SSLKey: mainflux.Env(envDBSSLKey, defDBSSLKey),
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SSLRootCert: mainflux.Env(envDBSSLRootCert, defDBSSLRootCert),
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}
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return config{
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logLevel: mainflux.Env(envLogLevel, defLogLevel),
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dbConfig: dbConfig,
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httpPort: mainflux.Env(envHTTPPort, defHTTPPort),
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grpcPort: mainflux.Env(envGRPCPort, defGRPCPort),
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secret: mainflux.Env(envSecret, defSecret),
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serverCert: mainflux.Env(envServerCert, defServerCert),
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serverKey: mainflux.Env(envServerKey, defServerKey),
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jaegerURL: mainflux.Env(envJaegerURL, defJaegerURL),
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}
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}
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func initJaeger(svcName, url string, logger logger.Logger) (opentracing.Tracer, io.Closer) {
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if url == "" {
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return opentracing.NoopTracer{}, ioutil.NopCloser(nil)
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}
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tracer, closer, err := jconfig.Configuration{
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ServiceName: svcName,
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Sampler: &jconfig.SamplerConfig{
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Type: "const",
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Param: 1,
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},
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Reporter: &jconfig.ReporterConfig{
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LocalAgentHostPort: url,
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LogSpans: true,
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},
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}.NewTracer()
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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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os.Exit(1)
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}
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return tracer, closer
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}
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func connectToDB(dbConfig postgres.Config, logger logger.Logger) *sqlx.DB {
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db, err := postgres.Connect(dbConfig)
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if err != nil {
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logger.Error(fmt.Sprintf("Failed to connect to postgres: %s", err))
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os.Exit(1)
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}
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return db
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}
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func newService(db *sqlx.DB, tracer opentracing.Tracer, secret string, logger logger.Logger) users.Service {
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database := postgres.NewDatabase(db)
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repo := tracing.UserRepositoryMiddleware(postgres.New(database), tracer)
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hasher := bcrypt.New()
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idp := jwt.New(secret)
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svc := users.New(repo, hasher, idp)
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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: "users",
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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: "users",
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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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return svc
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}
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func startHTTPServer(tracer opentracing.Tracer, svc users.Service, port string, certFile string, keyFile string, logger logger.Logger, errs chan error) {
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p := fmt.Sprintf(":%s", port)
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if certFile != "" || keyFile != "" {
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logger.Info(fmt.Sprintf("Users service started using https, cert %s key %s, exposed port %s", certFile, keyFile, port))
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errs <- http.ListenAndServeTLS(p, certFile, keyFile, httpapi.MakeHandler(svc, tracer, logger))
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} else {
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logger.Info(fmt.Sprintf("Users service started using http, exposed port %s", port))
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errs <- http.ListenAndServe(p, httpapi.MakeHandler(svc, tracer, logger))
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}
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}
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func startGRPCServer(tracer opentracing.Tracer, svc users.Service, port string, certFile string, keyFile string, logger logger.Logger, errs chan error) {
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p := fmt.Sprintf(":%s", port)
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listener, err := net.Listen("tcp", p)
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if err != nil {
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logger.Error(fmt.Sprintf("Failed to listen on port %s: %s", port, err))
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}
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var server *grpc.Server
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if certFile != "" || keyFile != "" {
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creds, err := credentials.NewServerTLSFromFile(certFile, keyFile)
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if err != nil {
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logger.Error(fmt.Sprintf("Failed to load users certificates: %s", err))
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os.Exit(1)
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}
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logger.Info(fmt.Sprintf("Users gRPC service started using https on port %s with cert %s key %s", port, certFile, keyFile))
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server = grpc.NewServer(grpc.Creds(creds))
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} else {
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logger.Info(fmt.Sprintf("Users gRPC service started using http on port %s", port))
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server = grpc.NewServer()
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}
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mainflux.RegisterUsersServiceServer(server, grpcapi.NewServer(tracer, svc))
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logger.Info(fmt.Sprintf("Users gRPC service started, exposed port %s", port))
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errs <- server.Serve(listener)
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}
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