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policy_update.go
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policy_update.go
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package policyupdate
import (
"flag"
"fmt"
"io"
"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/hashicorp/consul/command/helpers"
"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
nameSet bool
name string
descriptionSet bool
description string
datacenters []string
rulesSet bool
rules string
noMerge bool
showMeta bool
format string
testStdin io.Reader
}
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 update. "+
"It may be specified as a unique ID prefix but will error if the prefix "+
"matches multiple policy IDs")
c.flags.StringVar(&c.name, "name", "", "The policies name.")
c.flags.StringVar(&c.description, "description", "", "A description of the policy")
c.flags.Var((*flags.AppendSliceValue)(&c.datacenters), "valid-datacenter", "Datacenter "+
"that the policy should be valid within. This flag may be specified multiple times")
c.flags.StringVar(&c.rules, "rules", "", "The policy rules. May be prefixed with '@' "+
"to indicate that the value is a file path to load the rules from. '-' may also be "+
"given to indicate that the rules are available on stdin")
c.flags.BoolVar(&c.noMerge, "no-merge", false, "Do not merge the current policy "+
"information with what is provided to the command. Instead overwrite all fields "+
"with the exception of the policy ID which is immutable.")
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.NamespaceFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) checkSet(f *flag.Flag) {
switch f.Name {
case "name":
c.nameSet = true
case "description":
c.descriptionSet = true
case "rules":
c.rulesSet = true
}
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
c.flags.Visit(c.checkSet)
if c.policyID == "" && c.name == "" {
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
if c.policyID != "" {
policyID, err = acl.GetPolicyIDFromPartial(client, c.policyID)
} else {
policyID, err = acl.GetPolicyIDByName(client, c.name)
}
if err != nil {
c.UI.Error(fmt.Sprintf("Error determining policy ID: %v", err))
return 1
}
rules, err := helpers.LoadDataSource(c.rules, c.testStdin)
if err != nil {
c.UI.Error(fmt.Sprintf("Error loading data source: %v", err))
return 1
}
var updated *api.ACLPolicy
if c.noMerge {
updated = &api.ACLPolicy{
ID: policyID,
Name: c.name,
Description: c.description,
Datacenters: c.datacenters,
Rules: rules,
}
} else {
p, _, err := client.ACL().PolicyRead(policyID, nil)
if err != nil {
c.UI.Error(fmt.Sprintf("Error reading policy %q: %v", policyID, err))
return 1
}
updated = &api.ACLPolicy{
ID: policyID,
Name: p.Name,
Description: p.Description,
Datacenters: p.Datacenters,
Rules: p.Rules,
}
if c.nameSet {
updated.Name = c.name
}
if c.descriptionSet {
updated.Description = c.description
}
if c.rulesSet {
updated.Rules = rules
}
if c.datacenters != nil {
updated.Datacenters = c.datacenters
}
}
p, _, err := client.ACL().PolicyUpdate(updated, nil)
if err != nil {
c.UI.Error(fmt.Sprintf("Error updating policy %q: %v", policyID, 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(p)
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 = "Update an ACL policy"
const help = `
Usage: consul acl policy update [options]
Updates a policy. By default it will merge the policy information with its
current state so that you do not have to provide all parameters. This
behavior can be disabled by passing -no-merge.
Rename the policy:
$ consul acl policy update -id abcd -name "better-name"
Override all policy attributes:
# this will remove any datacenter scope if provided and will remove
# the description
$consul acl policy update -id abcd -name "better-name" -rules @rules.hcl
`