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package command
import (
"bytes"
"encoding/json"
"fmt"
"log"
"os"
"strings"
"github.com/hashicorp/packer/fix"
"github.com/hashicorp/packer/template"
"github.com/posener/complete"
)
type FixCommand struct {
Meta
}
func (c *FixCommand) Run(args []string) int {
var flagValidate bool
flags := c.Meta.FlagSet("fix", FlagSetNone)
flags.BoolVar(&flagValidate, "validate", true, "")
flags.Usage = func() { c.Ui.Say(c.Help()) }
if err := flags.Parse(args); err != nil {
return 1
}
args = flags.Args()
if len(args) != 1 {
flags.Usage()
return 1
}
// Read the file for decoding
tplF, err := os.Open(args[0])
if err != nil {
c.Ui.Error(fmt.Sprintf("Error opening template: %s", err))
return 1
}
defer tplF.Close()
// Decode the JSON into a generic map structure
var templateData map[string]interface{}
decoder := json.NewDecoder(tplF)
if err := decoder.Decode(&templateData); err != nil {
c.Ui.Error(fmt.Sprintf("Error parsing template: %s", err))
return 1
}
// Close the file since we're done with that
tplF.Close()
input := templateData
for _, name := range fix.FixerOrder {
var err error
fixer, ok := fix.Fixers[name]
if !ok {
panic("fixer not found: " + name)
}
log.Printf("Running fixer: %s", name)
input, err = fixer.Fix(input)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error fixing: %s", err))
return 1
}
}
var output bytes.Buffer
encoder := json.NewEncoder(&output)
if err := encoder.Encode(input); err != nil {
c.Ui.Error(fmt.Sprintf("Error encoding: %s", err))
return 1
}
var indented bytes.Buffer
if err := json.Indent(&indented, output.Bytes(), "", " "); err != nil {
c.Ui.Error(fmt.Sprintf("Error encoding: %s", err))
return 1
}
result := indented.String()
result = strings.Replace(result, `\u003c`, "<", -1)
result = strings.Replace(result, `\u003e`, ">", -1)
c.Ui.Say(result)
if flagValidate {
// Attempt to parse and validate the template
tpl, err := template.Parse(strings.NewReader(result))
if err != nil {
c.Ui.Error(fmt.Sprintf(
"Error! Fixed template fails to parse: %s\n\n"+
"This is usually caused by an error in the input template.\n"+
"Please fix the error and try again.",
err))
return 1
}
if err := tpl.Validate(); err != nil {
c.Ui.Error(fmt.Sprintf(
"Error! Fixed template failed to validate: %s\n\n"+
"This is usually caused by an error in the input template.\n"+
"Please fix the error and try again.",
err))
return 1
}
}
return 0
}
func (*FixCommand) Help() string {
helpText := `
Usage: packer fix [options] TEMPLATE
Reads the JSON template and attempts to fix known backwards
incompatibilities. The fixed template will be outputted to standard out.
If the template cannot be fixed due to an error, the command will exit
with a non-zero exit status. Error messages will appear on standard error.
Fixes that are run:
iso-md5 Replaces "iso_md5" in builders with newer
"iso_checksum"
createtime Replaces ".CreateTime" in builder configs with
"{{timestamp}}"
virtualbox-gaattach Updates VirtualBox builders using
"guest_additions_attach" to use
"guest_additions_mode"
pp-vagrant-override Replaces old-style provider overrides for the
Vagrant post-processor to new-style as of Packer
0.5.0.
virtualbox-rename Updates "virtualbox" builders to "virtualbox-iso"
vmware-rename Updates "vmware" builders to "vmware-iso"
parallels-headless Removes unused "headless" setting from Parallels
builders
parallels-deprecations Removes deprecated "parallels_tools_host_path" from
Parallels builders
sshkeypath Updates builders using "ssh_key_path" to use
"ssh_private_key_file"
sshdisableagent Updates builders using "ssh_disable_agent" to use
"ssh_disable_agent_forwarding"
manifest-filename Updates "manifest" post-processor so any "filename"
field is renamed to "output"
amazon-shutdown_behavior Changes "shutdown_behaviour" to "shutdown_behavior"
in Amazon builders
amazon-enhanced-networking Replaces "enhanced_networking" in builders with
"ena_support"
amazon-private-ip Replaces "ssh_private_ip": true in amazon builders
with "ssh_interface": "private_ip"
docker-email Removes "login_email" from the Docker builder
powershell-escapes Removes PowerShell escapes from user env vars and
elevated username and password strings
hyperv-deprecations Removes the deprecated "vhd_temp_path" setting from
Hyper-V ISO builder templates
hyperv-vmxc-typo Corrects a typo in the "clone_from_vmxc_path"
setting. Replaces with "clone_from_vmcx_path".
vmware-compaction Adds "skip_compaction = true" to "vmware-iso"
builders with incompatible disk_type_id
Options:
-validate=true If true (default), validates the fixed template.
`
return strings.TrimSpace(helpText)
}
func (c *FixCommand) Synopsis() string {
return "fixes templates from old versions of packer"
}
func (c *FixCommand) AutocompleteArgs() complete.Predictor {
return complete.PredictNothing
}
func (c *FixCommand) AutocompleteFlags() complete.Flags {
return complete.Flags{
"-validate": complete.PredictNothing,
}
}
|
