1 files changed, 109 insertions, 0 deletions
diff --git a/weed/command/mq_broker.go b/weed/command/mq_broker.go
new file mode 100644
index 000000000..a5a6e3566
--- /dev/null
+++ b/weed/command/mq_broker.go
@@ -0,0 +1,109 @@
+package command
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"google.golang.org/grpc/reflection"
+
+	"github.com/chrislusf/seaweedfs/weed/util/grace"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/messaging/broker"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+var (
+	mqBrokerStandaloneOptions MessageQueueBrokerOptions
+)
+
+type MessageQueueBrokerOptions struct {
+	filer      *string
+	ip         *string
+	port       *int
+	cpuprofile *string
+	memprofile *string
+}
+
+func init() {
+	cmdMqBroker.Run = runMqBroker // break init cycle
+	mqBrokerStandaloneOptions.filer = cmdMqBroker.Flag.String("filer", "localhost:8888", "filer server address")
+	mqBrokerStandaloneOptions.ip = cmdMqBroker.Flag.String("ip", util.DetectedHostAddress(), "broker host address")
+	mqBrokerStandaloneOptions.port = cmdMqBroker.Flag.Int("port", 17777, "broker gRPC listen port")
+	mqBrokerStandaloneOptions.cpuprofile = cmdMqBroker.Flag.String("cpuprofile", "", "cpu profile output file")
+	mqBrokerStandaloneOptions.memprofile = cmdMqBroker.Flag.String("memprofile", "", "memory profile output file")
+}
+
+var cmdMqBroker = &Command{
+	UsageLine: "mq.broker [-port=17777] [-filer=<ip:port>]",
+	Short:     "start a message queue broker",
+	Long: `start a message queue broker
+
+	The broker can accept gRPC calls to write or read messages. The messages are stored via filer.
+	The brokers are stateless. To scale up, just add more brokers.
+
+`,
+}
+
+func runMqBroker(cmd *Command, args []string) bool {
+
+	util.LoadConfiguration("security", false)
+
+	return mqBrokerStandaloneOptions.startQueueServer()
+
+}
+
+func (mqBrokerOpt *MessageQueueBrokerOptions) startQueueServer() bool {
+
+	grace.SetupProfiling(*mqBrokerStandaloneOptions.cpuprofile, *mqBrokerStandaloneOptions.memprofile)
+
+	filerAddress := pb.ServerAddress(*mqBrokerOpt.filer)
+
+	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.msg_broker")
+	cipher := false
+
+	for {
+		err := pb.WithGrpcFilerClient(false, filerAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+			resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
+			if err != nil {
+				return fmt.Errorf("get filer %s configuration: %v", filerAddress, err)
+			}
+			cipher = resp.Cipher
+			return nil
+		})
+		if err != nil {
+			glog.V(0).Infof("wait to connect to filer %s grpc address %s", *mqBrokerOpt.filer, filerAddress.ToGrpcAddress())
+			time.Sleep(time.Second)
+		} else {
+			glog.V(0).Infof("connected to filer %s grpc address %s", *mqBrokerOpt.filer, filerAddress.ToGrpcAddress())
+			break
+		}
+	}
+
+	qs, err := broker.NewMessageBroker(&broker.MessageBrokerOption{
+		Filers:             []pb.ServerAddress{filerAddress},
+		DefaultReplication: "",
+		MaxMB:              0,
+		Ip:                 *mqBrokerOpt.ip,
+		Port:               *mqBrokerOpt.port,
+		Cipher:             cipher,
+	}, grpcDialOption)
+
+	// start grpc listener
+	grpcL, _, err := util.NewIpAndLocalListeners("", *mqBrokerOpt.port, 0)
+	if err != nil {
+		glog.Fatalf("failed to listen on grpc port %d: %v", *mqBrokerOpt.port, err)
+	}
+	grpcS := pb.NewGrpcServer(security.LoadServerTLS(util.GetViper(), "grpc.msg_broker"))
+	messaging_pb.RegisterSeaweedMessagingServer(grpcS, qs)
+	reflection.Register(grpcS)
+	grpcS.Serve(grpcL)
+
+	return true
+
+}