open-consul/command/services/deregister/deregister.go

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package deregister
import (
"flag"
"fmt"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/command/flags"
"github.com/hashicorp/consul/command/services"
"github.com/mitchellh/cli"
)
func New(ui cli.Ui) *cmd {
c := &cmd{UI: ui}
c.init()
return c
}
type cmd struct {
UI cli.Ui
flags *flag.FlagSet
http *flags.HTTPFlags
help string
flagId string
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.flags.StringVar(&c.flagId, "id", "",
"ID to delete. This must not be set if arguments are given.")
c.http = &flags.HTTPFlags{}
flags.Merge(c.flags, c.http.ClientFlags())
flags.Merge(c.flags, c.http.ServerFlags())
flags.Merge(c.flags, c.http.MultiTenancyFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
// Check for arg validation
args = c.flags.Args()
if len(args) == 0 && c.flagId == "" {
c.UI.Error("Service deregistration requires at least one argument or -id.")
return 1
} else if len(args) > 0 && c.flagId != "" {
c.UI.Error("Service deregistration requires arguments or -id, not both.")
return 1
}
svcs := []*api.AgentServiceRegistration{{
ID: c.flagId,
}}
if len(args) > 0 {
var err error
svcs, err = services.ServicesFromFiles(c.UI, args)
if err != nil {
c.UI.Error(fmt.Sprintf("Error: %s", err))
return 1
}
}
// Create and test the HTTP client
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
// Create all the services
for _, svc := range svcs {
id := svc.ID
if id == "" {
id = svc.Name
}
if id == "" {
continue
}
if err := client.Agent().ServiceDeregister(id); err != nil {
c.UI.Error(fmt.Sprintf("Error deregistering service %q: %s",
svc.Name, err))
return 1
}
c.UI.Output(fmt.Sprintf("Deregistered service: %s", id))
}
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return c.help
}
const (
synopsis = "Deregister services with the local agent"
help = `
Usage: consul services deregister [options] [FILE...]
Deregister one or more services that were previously registered with
the local agent.
$ consul services deregister web.json db.json
The -id flag may be used to deregister a single service by ID:
$ consul services deregister -id=web
Services are deregistered from the local agent catalog. This command must
be run against the same agent where the service was registered.
`
)