Files
onepanel/main.go
2020-01-08 22:00:45 -08:00

97 lines
2.7 KiB
Go

package main
import (
"context"
"flag"
"log"
"net"
"net/http"
"os"
"github.com/gorilla/handlers"
"github.com/grpc-ecosystem/grpc-gateway/runtime"
"github.com/onepanelio/core/api"
"github.com/onepanelio/core/kube"
"github.com/onepanelio/core/manager"
"github.com/onepanelio/core/repository"
"github.com/onepanelio/core/server"
"github.com/pressly/goose"
"github.com/tmc/grpc-websocket-proxy/wsproxy"
"google.golang.org/grpc"
)
var (
rpcPort = flag.String("rpc-port", ":8887", "RPC Port")
httpPort = flag.String("http-port", ":8888", "RPC Port")
)
func main() {
flag.Parse()
db := repository.NewDB(os.Getenv("DB_DRIVER_NAME"), os.Getenv("DB_DATASOURCE_NAME"))
if err := goose.Run("up", db.Base(), "db"); err != nil {
log.Fatalf("goose up: %v", err)
}
kubeClient := kube.NewClient(os.Getenv("KUBECONFIG"))
go startRPCServer(db, kubeClient)
startHTTPProxy()
}
func startRPCServer(db *repository.DB, kubeClient *kube.Client) {
resourceManager := manager.NewResourceManager(db, kubeClient)
log.Printf("Starting RPC server on port %v", *rpcPort)
lis, err := net.Listen("tcp", *rpcPort)
if err != nil {
log.Fatalf("Failed to start RPC listener: %v", err)
}
s := grpc.NewServer(grpc.UnaryInterceptor(loggingInterceptor))
api.RegisterWorkflowServiceServer(s, server.NewWorkflowServer(resourceManager))
api.RegisterSecretServiceServer(s, server.NewSecretServer(resourceManager))
if err := s.Serve(lis); err != nil {
log.Fatalf("Failed to serve RPC server: %v", err)
}
}
func startHTTPProxy() {
endpoint := "localhost" + *rpcPort
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
// Register gRPC server endpoint
// Note: Make sure the gRPC server is running properly and accessible
mux := runtime.NewServeMux()
opts := []grpc.DialOption{grpc.WithInsecure()}
err := api.RegisterWorkflowServiceHandlerFromEndpoint(ctx, mux, endpoint, opts)
if err != nil {
log.Fatalf("Failed to connect to service: %v", err)
}
err = api.RegisterSecretServiceHandlerFromEndpoint(ctx, mux, endpoint, opts)
if err != nil {
log.Fatalf("Failed to connect to service: %v", err)
}
log.Printf("Starting HTTP proxy on port %v", *httpPort)
if err = http.ListenAndServe(*httpPort, wsproxy.WebsocketProxy(handlers.CORS()(mux))); err != nil {
log.Fatalf("Failed to serve HTTP listener: %v", err)
}
}
func loggingInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
log.Printf("%v handler started", info.FullMethod)
resp, err = handler(ctx, req)
if err != nil {
log.Printf("%s call failed", info.FullMethod)
return
}
log.Printf("%v handler finished", info.FullMethod)
return
}