/
kv_list.go
78 lines (60 loc) · 1.36 KB
/
kv_list.go
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// Copyright (c) 2021, R.I. Pienaar and the Choria Project contributors
//
// SPDX-License-Identifier: Apache-2.0
package cmd
import (
"fmt"
"strings"
"sync"
"github.com/choria-io/go-choria/internal/util"
"github.com/nats-io/jsm.go"
)
type kvLSCommand struct {
command
}
func (k *kvLSCommand) Setup() error {
if kv, ok := cmdWithFullCommand("kv"); ok {
k.cmd = kv.Cmd().Command("list", "List buckets").Alias("ls")
}
return nil
}
func (k *kvLSCommand) Configure() error {
return commonConfigure()
}
func (k *kvLSCommand) Run(wg *sync.WaitGroup) error {
defer wg.Done()
conn, err := c.NewConnector(ctx, c.MiddlewareServers, "kv manager", c.Logger("kv"))
if err != nil {
return err
}
mgr, err := jsm.New(conn.Nats())
if err != nil {
return err
}
found := 0
table := util.NewUTF8Table("Bucket", "History", "Values")
mgr.EachStream(&jsm.StreamNamesFilter{Subject: "$KV.>"}, func(s *jsm.Stream) {
if !jsm.IsKVBucketStream(s.Name()) {
return
}
parts := strings.SplitN(s.Name(), "_", 2)
if len(parts) != 2 {
return
}
state, err := s.LatestState()
if err != nil {
return
}
found++
table.AddRow(parts[1], s.MaxMsgsPerSubject(), state.Msgs)
})
if found == 0 {
fmt.Println("No Key-Value stores found")
return nil
}
fmt.Println(table.Render())
return nil
}
func init() {
cli.commands = append(cli.commands, &kvLSCommand{})
}