main.go

// Copyright 2018 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:generate protoc -I proto --go_out=plugins=grpc:proto proto/casbin.proto

package main

import (
	"flag"
	"fmt"
	"log"
	"net"

	pb "github.com/iotbzh/casbin-server/proto"
	"github.com/iotbzh/casbin-server/server"
	"google.golang.org/grpc"
	"google.golang.org/grpc/reflection"
)

func main() {
	var port int
	var driverName string
	var connectionString string
	var dbSpecified bool
	var modelFile string
	flag.IntVar(&port, "port", 50051, "listening port")
	flag.StringVar(&driverName, "driver", "postgres", "adapter's driver (can be 'file', 'mysql', 'postgres' or 'mssql')")
	flag.StringVar(&connectionString, "connstr", "", "adapter's connection string or file path if driver is 'file'")
	flag.BoolVar(&dbSpecified, "dbspecified", false, "indicates whether the db is specified or not in the connstr")
	flag.StringVar(&modelFile, "model", "", "path of the model file")
	flag.Parse()

	if port < 1 || port > 65535 {
		panic(fmt.Sprintf("invalid port number: %d", port))
	}

	if connectionString == "" {
		panic("a connection string should be provided")
	}

	if modelFile == "" {
		panic("a model file has to be specified")
	}

	lis, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
	if err != nil {
		log.Fatalf("failed to listen: %v", err)
	}
	s := grpc.NewServer()
	pb.RegisterCasbinServer(s, server.NewServer(driverName, connectionString, dbSpecified, modelFile))
	// Register reflection service on gRPC server.
	reflection.Register(s)
	log.Println("Listening on", port)
	if err := s.Serve(lis); err != nil {
		log.Fatalf("failed to serve: %v", err)
	}
}