mirror of
https://github.com/mainflux/mainflux.git
synced 2025-04-27 13:48:49 +08:00
308 lines
9.3 KiB
Go
308 lines
9.3 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"strconv"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/go-redis/redis"
|
|
"github.com/mainflux/mainflux"
|
|
mflog "github.com/mainflux/mainflux/logger"
|
|
"github.com/mainflux/mainflux/mqtt"
|
|
mqttredis "github.com/mainflux/mainflux/mqtt/redis"
|
|
"github.com/mainflux/mainflux/pkg/auth"
|
|
"github.com/mainflux/mainflux/pkg/messaging"
|
|
mqttpub "github.com/mainflux/mainflux/pkg/messaging/mqtt"
|
|
"github.com/mainflux/mainflux/pkg/messaging/nats"
|
|
thingsapi "github.com/mainflux/mainflux/things/api/auth/grpc"
|
|
mp "github.com/mainflux/mproxy/pkg/mqtt"
|
|
"github.com/mainflux/mproxy/pkg/session"
|
|
ws "github.com/mainflux/mproxy/pkg/websocket"
|
|
opentracing "github.com/opentracing/opentracing-go"
|
|
jconfig "github.com/uber/jaeger-client-go/config"
|
|
"google.golang.org/grpc"
|
|
"google.golang.org/grpc/credentials"
|
|
)
|
|
|
|
const (
|
|
// Logging
|
|
defLogLevel = "error"
|
|
envLogLevel = "MF_MQTT_ADAPTER_LOG_LEVEL"
|
|
// MQTT
|
|
defMQTTPort = "1883"
|
|
defMQTTTargetHost = "0.0.0.0"
|
|
defMQTTTargetPort = "1883"
|
|
defMQTTForwarderTimeout = "30s" // 30 seconds
|
|
envMQTTPort = "MF_MQTT_ADAPTER_MQTT_PORT"
|
|
envMQTTTargetHost = "MF_MQTT_ADAPTER_MQTT_TARGET_HOST"
|
|
envMQTTTargetPort = "MF_MQTT_ADAPTER_MQTT_TARGET_PORT"
|
|
envMQTTForwarderTimeout = "MF_MQTT_ADAPTER_FORWARDER_TIMEOUT"
|
|
// HTTP
|
|
defHTTPPort = "8080"
|
|
defHTTPTargetHost = "localhost"
|
|
defHTTPTargetPort = "8080"
|
|
defHTTPTargetPath = "/mqtt"
|
|
envHTTPPort = "MF_MQTT_ADAPTER_WS_PORT"
|
|
envHTTPTargetHost = "MF_MQTT_ADAPTER_WS_TARGET_HOST"
|
|
envHTTPTargetPort = "MF_MQTT_ADAPTER_WS_TARGET_PORT"
|
|
envHTTPTargetPath = "MF_MQTT_ADAPTER_WS_TARGET_PATH"
|
|
// Things
|
|
defThingsAuthURL = "localhost:8181"
|
|
defThingsAuthTimeout = "1s"
|
|
envThingsAuthURL = "MF_THINGS_AUTH_GRPC_URL"
|
|
envThingsAuthTimeout = "MF_THINGS_AUTH_GRPC_TIMEOUT"
|
|
// Nats
|
|
defNatsURL = "nats://localhost:4222"
|
|
envNatsURL = "MF_NATS_URL"
|
|
// Jaeger
|
|
defJaegerURL = ""
|
|
envJaegerURL = "MF_JAEGER_URL"
|
|
// TLS
|
|
defClientTLS = "false"
|
|
defCACerts = ""
|
|
envClientTLS = "MF_MQTT_ADAPTER_CLIENT_TLS"
|
|
envCACerts = "MF_MQTT_ADAPTER_CA_CERTS"
|
|
// Instance
|
|
envInstance = "MF_MQTT_ADAPTER_INSTANCE"
|
|
defInstance = ""
|
|
// ES
|
|
envESURL = "MF_MQTT_ADAPTER_ES_URL"
|
|
envESPass = "MF_MQTT_ADAPTER_ES_PASS"
|
|
envESDB = "MF_MQTT_ADAPTER_ES_DB"
|
|
defESURL = "localhost:6379"
|
|
defESPass = ""
|
|
defESDB = "0"
|
|
// Auth cache
|
|
envAuthCacheURL = "MF_AUTH_CACHE_URL"
|
|
envAuthCachePass = "MF_AUTH_CACHE_PASS"
|
|
envAuthCacheDB = "MF_AUTH_CACHE_DB"
|
|
defAuthcacheURL = "localhost:6379"
|
|
defAuthCachePass = ""
|
|
defAuthCacheDB = "0"
|
|
)
|
|
|
|
type config struct {
|
|
mqttPort string
|
|
mqttTargetHost string
|
|
mqttTargetPort string
|
|
mqttForwarderTimeout time.Duration
|
|
httpPort string
|
|
httpTargetHost string
|
|
httpTargetPort string
|
|
httpTargetPath string
|
|
jaegerURL string
|
|
logLevel string
|
|
thingsURL string
|
|
thingsAuthURL string
|
|
thingsAuthTimeout time.Duration
|
|
natsURL string
|
|
clientTLS bool
|
|
caCerts string
|
|
instance string
|
|
esURL string
|
|
esPass string
|
|
esDB string
|
|
authURL string
|
|
authPass string
|
|
authDB string
|
|
}
|
|
|
|
func main() {
|
|
cfg := loadConfig()
|
|
|
|
logger, err := mflog.New(os.Stdout, cfg.logLevel)
|
|
if err != nil {
|
|
log.Fatalf(err.Error())
|
|
}
|
|
|
|
conn := connectToThings(cfg, logger)
|
|
defer conn.Close()
|
|
|
|
ec := connectToRedis(cfg.esURL, cfg.esPass, cfg.esDB, logger)
|
|
defer ec.Close()
|
|
|
|
nps, err := nats.NewPubSub(cfg.natsURL, "mqtt", logger)
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
defer nps.Close()
|
|
|
|
mp, err := mqttpub.NewPublisher(fmt.Sprintf("%s:%s", cfg.mqttTargetHost, cfg.mqttTargetPort), cfg.mqttForwarderTimeout)
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to create MQTT publisher: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
|
|
fwd := mqtt.NewForwarder(nats.SubjectAllChannels, logger)
|
|
if err := fwd.Forward(nps, mp); err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to forward NATS messages: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
|
|
np, err := nats.NewPublisher(cfg.natsURL)
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
defer np.Close()
|
|
|
|
es := mqttredis.NewEventStore(ec, cfg.instance)
|
|
|
|
ac := connectToRedis(cfg.authURL, cfg.authPass, cfg.authDB, logger)
|
|
defer ac.Close()
|
|
|
|
thingsTracer, thingsCloser := initJaeger("things", cfg.jaegerURL, logger)
|
|
defer thingsCloser.Close()
|
|
tc := thingsapi.NewClient(conn, thingsTracer, cfg.thingsAuthTimeout)
|
|
|
|
authClient := auth.New(ac, tc)
|
|
|
|
// Event handler for MQTT hooks
|
|
h := mqtt.NewHandler([]messaging.Publisher{np}, es, logger, authClient)
|
|
|
|
errs := make(chan error, 2)
|
|
|
|
logger.Info(fmt.Sprintf("Starting MQTT proxy on port %s", cfg.mqttPort))
|
|
go proxyMQTT(cfg, logger, h, errs)
|
|
|
|
logger.Info(fmt.Sprintf("Starting MQTT over WS proxy on port %s", cfg.httpPort))
|
|
go proxyWS(cfg, logger, h, errs)
|
|
|
|
go func() {
|
|
c := make(chan os.Signal, 1)
|
|
signal.Notify(c, syscall.SIGINT)
|
|
errs <- fmt.Errorf("%s", <-c)
|
|
}()
|
|
|
|
err = <-errs
|
|
logger.Error(fmt.Sprintf("mProxy terminated: %s", err))
|
|
}
|
|
|
|
func loadConfig() config {
|
|
tls, err := strconv.ParseBool(mainflux.Env(envClientTLS, defClientTLS))
|
|
if err != nil {
|
|
log.Fatalf("Invalid value passed for %s\n", envClientTLS)
|
|
}
|
|
|
|
authTimeout, err := time.ParseDuration(mainflux.Env(envThingsAuthTimeout, defThingsAuthTimeout))
|
|
if err != nil {
|
|
log.Fatalf("Invalid %s value: %s", envThingsAuthTimeout, err.Error())
|
|
}
|
|
|
|
mqttTimeout, err := time.ParseDuration(mainflux.Env(envMQTTForwarderTimeout, defMQTTForwarderTimeout))
|
|
if err != nil {
|
|
log.Fatalf("Invalid %s value: %s", envThingsAuthTimeout, err.Error())
|
|
}
|
|
|
|
return config{
|
|
mqttPort: mainflux.Env(envMQTTPort, defMQTTPort),
|
|
mqttTargetHost: mainflux.Env(envMQTTTargetHost, defMQTTTargetHost),
|
|
mqttTargetPort: mainflux.Env(envMQTTTargetPort, defMQTTTargetPort),
|
|
mqttForwarderTimeout: mqttTimeout,
|
|
httpPort: mainflux.Env(envHTTPPort, defHTTPPort),
|
|
httpTargetHost: mainflux.Env(envHTTPTargetHost, defHTTPTargetHost),
|
|
httpTargetPort: mainflux.Env(envHTTPTargetPort, defHTTPTargetPort),
|
|
httpTargetPath: mainflux.Env(envHTTPTargetPath, defHTTPTargetPath),
|
|
jaegerURL: mainflux.Env(envJaegerURL, defJaegerURL),
|
|
thingsAuthURL: mainflux.Env(envThingsAuthURL, defThingsAuthURL),
|
|
thingsAuthTimeout: authTimeout,
|
|
thingsURL: mainflux.Env(envThingsAuthURL, defThingsAuthURL),
|
|
natsURL: mainflux.Env(envNatsURL, defNatsURL),
|
|
logLevel: mainflux.Env(envLogLevel, defLogLevel),
|
|
clientTLS: tls,
|
|
caCerts: mainflux.Env(envCACerts, defCACerts),
|
|
instance: mainflux.Env(envInstance, defInstance),
|
|
esURL: mainflux.Env(envESURL, defESURL),
|
|
esPass: mainflux.Env(envESPass, defESPass),
|
|
esDB: mainflux.Env(envESDB, defESDB),
|
|
authURL: mainflux.Env(envAuthCacheURL, defAuthcacheURL),
|
|
authPass: mainflux.Env(envAuthCachePass, defAuthCachePass),
|
|
authDB: mainflux.Env(envAuthCacheDB, defAuthCacheDB),
|
|
}
|
|
}
|
|
|
|
func initJaeger(svcName, url string, logger mflog.Logger) (opentracing.Tracer, io.Closer) {
|
|
if url == "" {
|
|
return opentracing.NoopTracer{}, ioutil.NopCloser(nil)
|
|
}
|
|
|
|
tracer, closer, err := jconfig.Configuration{
|
|
ServiceName: svcName,
|
|
Sampler: &jconfig.SamplerConfig{
|
|
Type: "const",
|
|
Param: 1,
|
|
},
|
|
Reporter: &jconfig.ReporterConfig{
|
|
LocalAgentHostPort: url,
|
|
LogSpans: true,
|
|
},
|
|
}.NewTracer()
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to init Jaeger client: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
|
|
return tracer, closer
|
|
}
|
|
|
|
func connectToThings(cfg config, logger mflog.Logger) *grpc.ClientConn {
|
|
var opts []grpc.DialOption
|
|
if cfg.clientTLS {
|
|
if cfg.caCerts != "" {
|
|
tpc, err := credentials.NewClientTLSFromFile(cfg.caCerts, "")
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to load certs: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
opts = append(opts, grpc.WithTransportCredentials(tpc))
|
|
}
|
|
} else {
|
|
logger.Info("gRPC communication is not encrypted")
|
|
opts = append(opts, grpc.WithInsecure())
|
|
}
|
|
|
|
conn, err := grpc.Dial(cfg.thingsAuthURL, opts...)
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to connect to things service: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
return conn
|
|
}
|
|
|
|
func connectToRedis(redisURL, redisPass, redisDB string, logger mflog.Logger) *redis.Client {
|
|
db, err := strconv.Atoi(redisDB)
|
|
if err != nil {
|
|
logger.Error(fmt.Sprintf("Failed to connect to redis: %s", err))
|
|
os.Exit(1)
|
|
}
|
|
|
|
return redis.NewClient(&redis.Options{
|
|
Addr: redisURL,
|
|
Password: redisPass,
|
|
DB: db,
|
|
})
|
|
}
|
|
|
|
func proxyMQTT(cfg config, logger mflog.Logger, handler session.Handler, errs chan error) {
|
|
address := fmt.Sprintf(":%s", cfg.mqttPort)
|
|
target := fmt.Sprintf("%s:%s", cfg.mqttTargetHost, cfg.mqttTargetPort)
|
|
mp := mp.New(address, target, handler, logger)
|
|
|
|
errs <- mp.Listen()
|
|
}
|
|
func proxyWS(cfg config, logger mflog.Logger, handler session.Handler, errs chan error) {
|
|
target := fmt.Sprintf("%s:%s", cfg.httpTargetHost, cfg.httpTargetPort)
|
|
wp := ws.New(target, cfg.httpTargetPath, "ws", handler, logger)
|
|
http.Handle("/mqtt", wp.Handler())
|
|
|
|
errs <- wp.Listen(cfg.httpPort)
|
|
}
|