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package shell
import (
"context"
"encoding/json"
"flag"
"fmt"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
"io"
)
func init() {
Commands = append(Commands, &commandMqTopicConfigure{})
}
type commandMqTopicConfigure struct {
}
func (c *commandMqTopicConfigure) Name() string {
return "mq.topic.configure"
}
func (c *commandMqTopicConfigure) Help() string {
return `configure a topic with a given name
Example:
mq.topic.configure -namespace <namespace> -topic <topic_name> -partition_count <partition_count>
`
}
func (c *commandMqTopicConfigure) HasTag(CommandTag) bool {
return false
}
func (c *commandMqTopicConfigure) Do(args []string, commandEnv *CommandEnv, writer io.Writer) error {
// parse parameters
mqCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
namespace := mqCommand.String("namespace", "", "namespace name")
topicName := mqCommand.String("topic", "", "topic name")
partitionCount := mqCommand.Int("partitionCount", 6, "partition count")
if err := mqCommand.Parse(args); err != nil {
return err
}
// find the broker balancer
brokerBalancer, err := findBrokerBalancer(commandEnv)
if err != nil {
return err
}
fmt.Fprintf(writer, "current balancer: %s\n", brokerBalancer)
// create topic
return pb.WithBrokerGrpcClient(false, brokerBalancer, commandEnv.option.GrpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
resp, err := client.ConfigureTopic(context.Background(), &mq_pb.ConfigureTopicRequest{
Topic: &schema_pb.Topic{
Namespace: *namespace,
Name: *topicName,
},
PartitionCount: int32(*partitionCount),
})
if err != nil {
return err
}
output, _ := json.MarshalIndent(resp, "", " ")
fmt.Fprintf(writer, "response:\n%+v\n", string(output))
return nil
})
}
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