133 lines
2.8 KiB
Go
133 lines
2.8 KiB
Go
package command
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/hashicorp/nomad/api"
|
|
"github.com/mitchellh/cli"
|
|
"github.com/ryanuber/columnize"
|
|
)
|
|
|
|
type AgentMembersCommand struct {
|
|
Ui cli.Ui
|
|
}
|
|
|
|
func (c *AgentMembersCommand) Help() string {
|
|
helpText := `
|
|
Usage: nomad agent-members [options]
|
|
|
|
Displays a list of the known members and their status.
|
|
|
|
Options:
|
|
|
|
-detailed
|
|
Show detailed information about each member. This dumps
|
|
a raw set of tags which shows more information than the
|
|
default output format.
|
|
|
|
-help
|
|
Display this message
|
|
|
|
-http-addr
|
|
Address of the Nomad API to connect. Can also be specified
|
|
using the environment variable NOMAD_HTTP_ADDR.
|
|
Default = http://127.0.0.1:4646
|
|
`
|
|
return strings.TrimSpace(helpText)
|
|
}
|
|
|
|
func (c *AgentMembersCommand) Synopsis() string {
|
|
return "Displays a list of known members and their status"
|
|
}
|
|
|
|
func (c *AgentMembersCommand) Run(args []string) int {
|
|
var httpAddr *string
|
|
var detailed bool
|
|
|
|
flags := flag.NewFlagSet("agent-members", flag.ContinueOnError)
|
|
flags.Usage = func() { c.Ui.Output(c.Help()) }
|
|
flags.BoolVar(&detailed, "detailed", false, "Show detailed output")
|
|
httpAddr = httpAddrFlag(flags)
|
|
|
|
if err := flags.Parse(args); err != nil {
|
|
return 1
|
|
}
|
|
|
|
// Check for extra arguments
|
|
if len(flags.Args()) != 0 {
|
|
c.Ui.Error(c.Help())
|
|
return 1
|
|
}
|
|
|
|
// Get the HTTP client
|
|
client, err := httpClient(*httpAddr)
|
|
if err != nil {
|
|
c.Ui.Error(fmt.Sprintf("Failed initializing Nomad client: %s", err))
|
|
return 1
|
|
}
|
|
|
|
// Query the members
|
|
mem, err := client.Agent().Members()
|
|
if err != nil {
|
|
c.Ui.Error(fmt.Sprintf("Failed querying members: %s", err))
|
|
return 1
|
|
}
|
|
|
|
// Format the list
|
|
var out []string
|
|
if detailed {
|
|
out = detailedOutput(mem)
|
|
} else {
|
|
out = standardOutput(mem)
|
|
}
|
|
|
|
// Dump the list
|
|
c.Ui.Output(columnize.SimpleFormat(out))
|
|
return 0
|
|
}
|
|
|
|
func standardOutput(mem []*api.AgentMember) []string {
|
|
// Format the members list
|
|
members := make([]string, len(mem)+1)
|
|
members[0] = "Name|Addr|Port|Status|Proto|Build|DC|Region"
|
|
for i, member := range mem {
|
|
line := fmt.Sprintf("%s|%s|%d|%d|%d|%s|%s|%s",
|
|
member.Name,
|
|
member.Addr,
|
|
member.Port,
|
|
member.Status,
|
|
member.ProtocolCur,
|
|
member.Tags["build"],
|
|
member.Tags["dc"],
|
|
member.Tags["region"],
|
|
)
|
|
members[i+1] = line
|
|
}
|
|
return members
|
|
}
|
|
|
|
func detailedOutput(mem []*api.AgentMember) []string {
|
|
// Format the members list
|
|
members := make([]string, len(mem)+1)
|
|
members[0] = "Name|Addr|Port|Tags"
|
|
for i, member := range mem {
|
|
// Format the tags
|
|
tagPairs := make([]string, 0, len(member.Tags))
|
|
for k, v := range member.Tags {
|
|
tagPairs = append(tagPairs, fmt.Sprintf("%s=%s", k, v))
|
|
}
|
|
tags := strings.Join(tagPairs, ",")
|
|
|
|
line := fmt.Sprintf("%s|%s|%d|%s",
|
|
member.Name,
|
|
member.Addr,
|
|
member.Port,
|
|
tags,
|
|
)
|
|
members[i+1] = line
|
|
}
|
|
return members
|
|
}
|