open-consul/command/acl/policy/read/policy_read.go

137 lines
3.0 KiB
Go

package policyread
import (
"flag"
"fmt"
"strings"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/command/acl"
"github.com/hashicorp/consul/command/acl/policy"
"github.com/hashicorp/consul/command/flags"
"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
policyID string
policyName string
showMeta bool
format string
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.flags.BoolVar(&c.showMeta, "meta", false, "Indicates that policy metadata such "+
"as the content hash and raft indices should be shown for each entry")
c.flags.StringVar(&c.policyID, "id", "", "The ID of the policy to read. "+
"It may be specified as a unique ID prefix but will error if the prefix "+
"matches multiple policy IDs")
c.flags.StringVar(&c.policyName, "name", "", "The name of the policy to read.")
c.flags.StringVar(
&c.format,
"format",
policy.PrettyFormat,
fmt.Sprintf("Output format {%s}", strings.Join(policy.GetSupportedFormats(), "|")),
)
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
}
if c.policyID == "" && c.policyName == "" {
c.UI.Error(fmt.Sprintf("Must specify either the -id or -name parameters"))
return 1
}
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
var policyID string
var pol *api.ACLPolicy
if c.policyID != "" {
policyID, err = acl.GetPolicyIDFromPartial(client, c.policyID)
if err != nil {
c.UI.Error(fmt.Sprintf("Error determining policy ID: %v", err))
return 1
}
pol, _, err = client.ACL().PolicyRead(policyID, nil)
} else {
pol, err = acl.GetPolicyByName(client, c.policyName)
}
if err != nil {
var errArg string
if c.policyID != "" {
errArg = fmt.Sprintf("id:%s", policyID)
} else {
errArg = fmt.Sprintf("name:%s", c.policyName)
}
c.UI.Error(fmt.Sprintf("Error reading policy %q: %v", errArg, err))
return 1
}
formatter, err := policy.NewFormatter(c.format, c.showMeta)
if err != nil {
c.UI.Error(err.Error())
return 1
}
out, err := formatter.FormatPolicy(pol)
if err != nil {
c.UI.Error(err.Error())
return 1
}
if out != "" {
c.UI.Info(out)
}
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return flags.Usage(c.help, nil)
}
const (
synopsis = "Read an ACL policy"
help = `
Usage: consul acl policy read [options] POLICY
This command will retrieve and print out the details
of a single policy.
Read:
$ consul acl policy read -id fdabbcb5-9de5-4b1a-961f-77214ae88cba
Read by name:
$ consul acl policy read -name my-policy
`
)