/
command_mq_topic_list.go
64 lines (55 loc) · 1.6 KB
/
command_mq_topic_list.go
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package shell
import (
"context"
"fmt"
"github.com/seaweedfs/seaweedfs/weed/mq/pub_balancer"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"io"
)
func init() {
Commands = append(Commands, &commandMqTopicList{})
}
type commandMqTopicList struct {
}
func (c *commandMqTopicList) Name() string {
return "mq.topic.list"
}
func (c *commandMqTopicList) Help() string {
return `print out all topics`
}
func (c *commandMqTopicList) Do(args []string, commandEnv *CommandEnv, writer io.Writer) error {
brokerBalancer, err := findBrokerBalancer(commandEnv)
if err != nil {
return err
}
fmt.Fprintf(writer, "current balancer: %s\n", brokerBalancer)
return pb.WithBrokerGrpcClient(false, brokerBalancer, commandEnv.option.GrpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
resp, err := client.ListTopics(context.Background(), &mq_pb.ListTopicsRequest{})
if err != nil {
return err
}
if len(resp.Topics) == 0 {
fmt.Fprintf(writer, "no topics found\n")
return nil
}
for _, topic := range resp.Topics {
fmt.Fprintf(writer, " %+v\n", topic)
}
return nil
})
}
func findBrokerBalancer(commandEnv *CommandEnv) (brokerBalancer string, err error) {
err = commandEnv.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
resp, err := client.FindLockOwner(context.Background(), &filer_pb.FindLockOwnerRequest{
Name: pub_balancer.LockBrokerBalancer,
})
if err != nil {
return fmt.Errorf("FindLockOwner: %v", err)
}
brokerBalancer = resp.Owner
return nil
})
return
}