seaweedfs/weed/command/msg_broker.go

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package command
import (
"context"
"fmt"
"time"
"google.golang.org/grpc/reflection"
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"github.com/chrislusf/seaweedfs/weed/util/grace"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/messaging/broker"
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"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
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"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/util"
)
var (
messageBrokerStandaloneOptions MessageBrokerOptions
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)
type MessageBrokerOptions struct {
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filer *string
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ip *string
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port *int
cpuprofile *string
memprofile *string
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}
func init() {
cmdMsgBroker.Run = runMsgBroker // break init cycle
messageBrokerStandaloneOptions.filer = cmdMsgBroker.Flag.String("filer", "localhost:8888", "filer server address")
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messageBrokerStandaloneOptions.ip = cmdMsgBroker.Flag.String("ip", util.DetectedHostAddress(), "broker host address")
messageBrokerStandaloneOptions.port = cmdMsgBroker.Flag.Int("port", 17777, "broker gRPC listen port")
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messageBrokerStandaloneOptions.cpuprofile = cmdMsgBroker.Flag.String("cpuprofile", "", "cpu profile output file")
messageBrokerStandaloneOptions.memprofile = cmdMsgBroker.Flag.String("memprofile", "", "memory profile output file")
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}
var cmdMsgBroker = &Command{
UsageLine: "msgBroker [-port=17777] [-filer=<ip:port>]",
Short: "start a message queue broker",
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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 runMsgBroker(cmd *Command, args []string) bool {
util.LoadConfiguration("security", false)
return messageBrokerStandaloneOptions.startQueueServer()
}
func (msgBrokerOpt *MessageBrokerOptions) startQueueServer() bool {
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grace.SetupProfiling(*messageBrokerStandaloneOptions.cpuprofile, *messageBrokerStandaloneOptions.memprofile)
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filerGrpcAddress, err := pb.ParseServerToGrpcAddress(*msgBrokerOpt.filer)
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if err != nil {
glog.Fatal(err)
return false
}
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grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.msg_broker")
cipher := false
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for {
err = pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
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resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
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if err != nil {
return fmt.Errorf("get filer %s configuration: %v", filerGrpcAddress, err)
}
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cipher = resp.Cipher
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return nil
})
if err != nil {
glog.V(0).Infof("wait to connect to filer %s grpc address %s", *msgBrokerOpt.filer, filerGrpcAddress)
time.Sleep(time.Second)
} else {
glog.V(0).Infof("connected to filer %s grpc address %s", *msgBrokerOpt.filer, filerGrpcAddress)
break
}
}
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qs, err := broker.NewMessageBroker(&broker.MessageBrokerOption{
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Filers: []string{*msgBrokerOpt.filer},
DefaultReplication: "",
MaxMB: 0,
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Ip: *msgBrokerOpt.ip,
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Port: *msgBrokerOpt.port,
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Cipher: cipher,
}, grpcDialOption)
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// start grpc listener
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grpcL, err := util.NewListener(util.JoinHostPort("", *msgBrokerOpt.port), 0)
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if err != nil {
glog.Fatalf("failed to listen on grpc port %d: %v", *msgBrokerOpt.port, err)
}
grpcS := pb.NewGrpcServer(security.LoadServerTLS(util.GetViper(), "grpc.msg_broker"))
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messaging_pb.RegisterSeaweedMessagingServer(grpcS, qs)
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reflection.Register(grpcS)
grpcS.Serve(grpcL)
return true
}