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list.go
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list.go
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
package brokers
import (
"errors"
"github.com/olekukonko/tablewriter"
"github.com/streamnative/pulsarctl/pkg/cmdutils"
"github.com/streamnative/pulsarctl/pkg/pulsar"
)
func getBrokerListCmd(vc *cmdutils.VerbCmd) {
desc := pulsar.LongDescription{}
desc.CommandUsedFor = "List active brokers of the cluster"
desc.CommandPermission = "This command requires super-user permissions."
var examples []pulsar.Example
list := pulsar.Example{
Desc: "List active brokers of the cluster",
Command: "pulsarctl brokers list (cluster-name)",
}
examples = append(examples, list)
desc.CommandExamples = examples
var out []pulsar.Output
successOut := pulsar.Output{
Desc: "normal output",
Out: "127.0.0.1:8080",
}
var argsError = pulsar.Output{
Desc: "the cluster name is not specified or the cluster name is specified more than one",
Out: "[✖] the cluster name is not specified or the cluster name is specified more than one",
}
out = append(out, successOut, argsError)
desc.CommandOutput = out
vc.SetDescription(
"list",
"List active brokers of the cluster",
desc.ToString(),
desc.ExampleToString(),
"list")
vc.SetRunFuncWithNameArg(func() error {
return doListCluster(vc)
}, "the cluster name is not specified or the cluster name is specified more than one")
}
func doListCluster(vc *cmdutils.VerbCmd) error {
clusterName := vc.NameArg
if clusterName == "" {
return errors.New("should specified a cluster name")
}
admin := cmdutils.NewPulsarClient()
brokersData, err := admin.Brokers().GetActiveBrokers(clusterName)
if err != nil {
cmdutils.PrintError(vc.Command.OutOrStderr(), err)
} else {
table := tablewriter.NewWriter(vc.Command.OutOrStdout())
table.SetHeader([]string{"Brokers List"})
for _, c := range brokersData {
table.Append([]string{c})
}
table.Render()
}
return err
}