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Improve upgrade error and transform all variables with template eng to locals

This commit is contained in:
sylviamoss 2021-02-23 16:51:13 +01:00
parent 20e8f666d9
commit 5ccbd27b72
8 changed files with 220 additions and 79 deletions
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131
command/hcl2_upgrade.go
View File

@ -12,6 +12,7 @@ import (
"strings"
texttemplate "text/template"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/hcl/v2/hclwrite"
hcl2shim "github.com/hashicorp/packer-plugin-sdk/hcl2helper"
"github.com/hashicorp/packer-plugin-sdk/template"
@ -279,28 +280,29 @@ func transposeTemplatingCalls(s []byte) []byte {
return append([]byte(fmt.Sprintf("\n# could not parse template for following block: %q\n", err)), s...)
}
funcMap := templateCommonFunctionMap()
tpl, err := texttemplate.New("hcl2_upgrade").
Funcs(funcMap).
Parse(string(s))
if err != nil {
return fallbackReturn(err)
funcErrors := &multierror.Error{
ErrorFormat: func(es []error) string {
if len(es) == 1 {
return fmt.Sprintf("# 1 error occurred upgrading the following block:\n\t# %s\n", es[0])
}
str := &bytes.Buffer{}
// PASSTHROUGHS is a map of variable-specific golang text template fields
// that should remain in the text template format.
if err := tpl.Execute(str, PASSTHROUGHS); err != nil {
return fallbackReturn(err)
points := make([]string, len(es))
for i, err := range es {
if i == len(es)-1 {
points[i] = fmt.Sprintf("# %s", err)
continue
}
points[i] = fmt.Sprintf("# %s\n", err)
}
return str.Bytes()
return fmt.Sprintf(
"# %d errors occurred upgrading the following block:\n\t%s",
len(es), strings.Join(points, "\n\t"))
},
}
func templateCommonFunctionMap() texttemplate.FuncMap {
return texttemplate.FuncMap{
funcMap := texttemplate.FuncMap{
"aws_secretsmanager": func(a ...string) string {
if len(a) == 2 {
for key, config := range amazonSecretsManagerMap {
@ -365,49 +367,55 @@ func templateCommonFunctionMap() texttemplate.FuncMap {
"uuid": func() string {
return fmt.Sprintf("${uuidv4()}")
},
"lower": func(_ string) (string, error) {
return "", UnhandleableArgumentError{
"lower": func(a string) (string, error) {
funcErrors = multierror.Append(funcErrors, UnhandleableArgumentError{
"lower",
"`lower(var.example)`",
"https://www.packer.io/docs/templates/hcl_templates/functions/string/lower",
}
})
return fmt.Sprintf("{{ lower `%s` }}", a), nil
},
"upper": func(_ string) (string, error) {
return "", UnhandleableArgumentError{
"upper": func(a string) (string, error) {
funcErrors = multierror.Append(funcErrors, UnhandleableArgumentError{
"upper",
"`upper(var.example)`",
"https://www.packer.io/docs/templates/hcl_templates/functions/string/upper",
}
})
return fmt.Sprintf("{{ upper `%s` }}", a), nil
},
"split": func(_, _ string, _ int) (string, error) {
return "", UnhandleableArgumentError{
"split": func(a, b string, n int) (string, error) {
funcErrors = multierror.Append(funcErrors, UnhandleableArgumentError{
"split",
"`split(separator, string)`",
"https://www.packer.io/docs/templates/hcl_templates/functions/string/split",
}
})
return fmt.Sprintf("{{ split `%s` `%s` %d }}", a, b, n), nil
},
"replace": func(_, _, _ string, _ int) (string, error) {
return "", UnhandleableArgumentError{
"replace": func(a, b string, n int, c string) (string, error) {
funcErrors = multierror.Append(funcErrors, UnhandleableArgumentError{
"replace",
"`replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`",
"https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace",
}
})
return fmt.Sprintf("{{ replace `%s` `%s` `%s` %d }}", a, b, c, n), nil
},
"replace_all": func(_, _, _ string) (string, error) {
return "", UnhandleableArgumentError{
"replace_all": func(a, b, c string) (string, error) {
funcErrors = multierror.Append(funcErrors, UnhandleableArgumentError{
"replace_all",
"`replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`",
"https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace",
}
})
return fmt.Sprintf("{{ replace_all `%s` `%s` `%s` }}", a, b, c), nil
},
"clean_resource_name": func(_ string) (string, error) {
return "", UnhandleableArgumentError{
"clean_resource_name": func(a string) (string, error) {
funcErrors = multierror.Append(funcErrors, UnhandleableArgumentError{
"clean_resource_name",
"use custom validation rules, `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`",
"https://packer.io/docs/templates/hcl_templates/variables#custom-validation-rules" +
" , https://www.packer.io/docs/templates/hcl_templates/functions/string/replace" +
" or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace",
}
})
return fmt.Sprintf("{{ clean_resource_name `%s` }}", a), nil
},
"build_name": func() string {
return fmt.Sprintf("${build.name}")
@ -416,6 +424,28 @@ func templateCommonFunctionMap() texttemplate.FuncMap {
return fmt.Sprintf("${build.type}")
},
}
tpl, err := texttemplate.New("hcl2_upgrade").
Funcs(funcMap).
Parse(string(s))
if err != nil {
return fallbackReturn(err)
}
str := &bytes.Buffer{}
// PASSTHROUGHS is a map of variable-specific golang text template fields
// that should remain in the text template format.
if err := tpl.Execute(str, PASSTHROUGHS); err != nil {
return fallbackReturn(err)
}
out := str.Bytes()
if funcErrors.Len() > 0 {
return append([]byte(fmt.Sprintf("\n%s", funcErrors)), out...)
}
return out
}
// variableTransposeTemplatingCalls executes parts of blocks as go template files and replaces
@ -440,27 +470,32 @@ func variableTransposeTemplatingCalls(s []byte) (isLocal bool, body []byte) {
// Make locals from variables using valid template engine,
// expect the ones using only 'env'
// ref: https://www.packer.io/docs/templates/legacy_json_templates/engine#template-engine
funcMap := templateCommonFunctionMap()
funcMap["aws_secretsmanager"] = setIsLocal
funcMap["user"] = setIsLocal
funcMap["isotime"] = setIsLocal
funcMap["timestamp"] = setIsLocal
funcMap["template_dir"] = setIsLocal
funcMap["lower"] = setIsLocal
funcMap["upper"] = setIsLocal
funcMap["uuid"] = setIsLocal
funcMap["pwd"] = setIsLocal
funcMap["split"] = func(_, _ string, _ int) (string, error) {
funcMap := texttemplate.FuncMap{
"aws_secretsmanager": setIsLocal,
"timestamp": setIsLocal,
"isotime": setIsLocal,
"user": setIsLocal,
"env": func(in string) string {
return fmt.Sprintf("${env(%q)}", in)
},
"template_dir": setIsLocal,
"pwd": setIsLocal,
"packer_version": setIsLocal,
"uuid": setIsLocal,
"lower": setIsLocal,
"upper": setIsLocal,
"split": func(_, _ string, _ int) (string, error) {
isLocal = true
return "", nil
}
funcMap["replace"] = func(_, _, _ string, _ int) (string, error) {
},
"replace": func(_, _ string, _ int, _ string) (string, error) {
isLocal = true
return "", nil
}
funcMap["replace_all"] = func(_, _, _ string) (string, error) {
},
"replace_all": func(_, _, _ string) (string, error) {
isLocal = true
return "", nil
},
}
tpl, err := texttemplate.New("hcl2_upgrade").

1
command/hcl2_upgrade_test.go
View File

@ -28,6 +28,7 @@ func Test_hcl2_upgrade(t *testing.T) {
{folder: "aws-access-config", flags: []string{}},
{folder: "variables-only", flags: []string{}},
{folder: "variables-with-variables", flags: []string{}},
{folder: "complete-variables-with-template-engine", flags: []string{}},
}
for _, tc := range tc {

58
command/test-fixtures/hcl2_upgrade/complete-variables-with-template-engine/expected.pkr.hcl Normal file
View File

@ -0,0 +1,58 @@
variable "env_test" {
type = string
default = "${env("TEST_ENV")}"
}
locals { timestamp = regex_replace(timestamp(), "[- TZ:]", "") }
# 5 errors occurred upgrading the following block:
# unhandled "lower" call:
# there is no way to automatically upgrade the "lower" call.
# Please manually upgrade to `lower(var.example)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/lower for more infos.
# unhandled "replace" call:
# there is no way to automatically upgrade the "replace" call.
# Please manually upgrade to `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.
# unhandled "replace_all" call:
# there is no way to automatically upgrade the "replace_all" call.
# Please manually upgrade to `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.
# unhandled "split" call:
# there is no way to automatically upgrade the "split" call.
# Please manually upgrade to `split(separator, string)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/split for more infos.
# unhandled "upper" call:
# there is no way to automatically upgrade the "upper" call.
# Please manually upgrade to `upper(var.example)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/upper for more infos.
locals {
build_timestamp = "${local.timestamp}"
iso_datetime = "${local.timestamp}"
lower = "{{ lower `HELLO` }}"
pwd = "${path.cwd}"
replace = "{{ replace `b` `c` `ababa` 2 }}"
replace_all = "{{ replace_all `b` `c` `ababa` }}"
split = "{{ split `aba` `b` 1 }}"
temp_directory = "${path.root}"
upper = "{{ upper `hello` }}"
uuid = "${uuidv4()}"
}
source "null" "autogenerated_1" {
communicator = "none"
}
build {
sources = ["source.null.autogenerated_1"]
provisioner "shell-local" {
inline = ["echo ${local.build_timestamp}", "echo ${local.temp_directory}", "echo ${local.iso_datetime}", "echo ${local.uuid}", "echo ${var.env_test}", "echo ${local.lower}", "echo ${local.upper}", "echo ${local.pwd}", "echo ${local.replace}", "echo ${local.replace_all}", "echo ${local.split}"]
}
}

35
command/test-fixtures/hcl2_upgrade/complete-variables-with-template-engine/input.json Normal file
View File

@ -0,0 +1,35 @@
{
"variables": {
"build_timestamp": "{{timestamp}}",
"temp_directory": "{{template_dir}}",
"uuid": "{{uuid}}",
"env_test": "{{env `TEST_ENV`}}",
"lower": "{{lower `HELLO`}}",
"upper": "{{upper `hello`}}",
"pwd": "{{pwd}}",
"replace": "{{replace `b` `c` 2 `ababa`}}",
"replace_all": "{{replace_all `b` `c` `ababa`}}",
"split": "{{split `aba` `b` 1}}",
"iso_datetime": "{{isotime `2006-01-02T15:04:05Z07:00`}}"
},
"builders": [{
"type": "null",
"communicator": "none"
}],
"provisioners": [{
"type": "shell-local",
"inline": [
"echo {{ user `build_timestamp`}}",
"echo {{ user `temp_directory`}}",
"echo {{ user `iso_datetime`}}",
"echo {{ user `uuid`}}",
"echo {{ user `env_test`}}",
"echo {{ user `lower`}}",
"echo {{ user `upper`}}",
"echo {{ user `pwd`}}",
"echo {{ user `replace`}}",
"echo {{ user `replace_all`}}",
"echo {{ user `split`}}"
]
}]
}

26
command/test-fixtures/hcl2_upgrade/complete/expected.pkr.hcl
View File

@ -187,34 +187,38 @@ build {
}
# template: hcl2_upgrade:2:38: executing "hcl2_upgrade" at <clean_resource_name>: error calling clean_resource_name: unhandled "clean_resource_name" call:
# 1 error occurred upgrading the following block:
# unhandled "clean_resource_name" call:
# there is no way to automatically upgrade the "clean_resource_name" call.
# Please manually upgrade to use custom validation rules, `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://packer.io/docs/templates/hcl_templates/variables#custom-validation-rules , https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.
provisioner "shell" {
inline = ["echo mybuild-{{isotime | clean_resource_name}}"]
inline = ["echo mybuild-{{ clean_resource_name `${local.timestamp}` }}"]
}
# template: hcl2_upgrade:2:35: executing "hcl2_upgrade" at <lower>: error calling lower: unhandled "lower" call:
# 1 error occurred upgrading the following block:
# unhandled "lower" call:
# there is no way to automatically upgrade the "lower" call.
# Please manually upgrade to `lower(var.example)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/lower for more infos.
provisioner "shell" {
inline = ["echo {{ `SOMETHING` | lower }}"]
inline = ["echo {{ lower `SOMETHING` }}"]
}
# template: hcl2_upgrade:2:35: executing "hcl2_upgrade" at <upper>: error calling upper: unhandled "upper" call:
# 1 error occurred upgrading the following block:
# unhandled "upper" call:
# there is no way to automatically upgrade the "upper" call.
# Please manually upgrade to `upper(var.example)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/upper for more infos.
provisioner "shell" {
inline = ["echo {{ `something` | upper }}"]
inline = ["echo {{ upper `something` }}"]
}
# template: hcl2_upgrade:2:21: executing "hcl2_upgrade" at <split `some-string` `-` 0>: error calling split: unhandled "split" call:
# 1 error occurred upgrading the following block:
# unhandled "split" call:
# there is no way to automatically upgrade the "split" call.
# Please manually upgrade to `split(separator, string)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/split for more infos.
@ -223,16 +227,18 @@ build {
}
# template: hcl2_upgrade:2:21: executing "hcl2_upgrade" at <replace_all `-` `/` build_name>: error calling replace_all: unhandled "replace_all" call:
# 1 error occurred upgrading the following block:
# unhandled "replace_all" call:
# there is no way to automatically upgrade the "replace_all" call.
# Please manually upgrade to `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.
provisioner "shell" {
inline = ["echo {{ replace_all `-` `/` build_name }}"]
inline = ["echo {{ replace_all `-` `/` `${build.name}` }}"]
}
# template: hcl2_upgrade:2:21: executing "hcl2_upgrade" at <replace `some-string` `-` `/` 1>: error calling replace: unhandled "replace" call:
# 1 error occurred upgrading the following block:
# unhandled "replace" call:
# there is no way to automatically upgrade the "replace" call.
# Please manually upgrade to `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.

2
command/test-fixtures/hcl2_upgrade/complete/input.json
View File

@ -180,7 +180,7 @@
{
"type": "shell",
"inline": [
"echo {{ replace `some-string` `-` `/` 1 }}"
"echo {{ replace `some-string` `-` 1 `/` }}"
]
},
{

26
command/test-fixtures/hcl2_upgrade/without-annotations/expected.pkr.hcl
View File

@ -145,34 +145,38 @@ build {
}
# template: hcl2_upgrade:2:38: executing "hcl2_upgrade" at <clean_resource_name>: error calling clean_resource_name: unhandled "clean_resource_name" call:
# 1 error occurred upgrading the following block:
# unhandled "clean_resource_name" call:
# there is no way to automatically upgrade the "clean_resource_name" call.
# Please manually upgrade to use custom validation rules, `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://packer.io/docs/templates/hcl_templates/variables#custom-validation-rules , https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.
provisioner "shell" {
inline = ["echo mybuild-{{isotime | clean_resource_name}}"]
inline = ["echo mybuild-{{ clean_resource_name `${local.timestamp}` }}"]
}
# template: hcl2_upgrade:2:35: executing "hcl2_upgrade" at <lower>: error calling lower: unhandled "lower" call:
# 1 error occurred upgrading the following block:
# unhandled "lower" call:
# there is no way to automatically upgrade the "lower" call.
# Please manually upgrade to `lower(var.example)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/lower for more infos.
provisioner "shell" {
inline = ["echo {{ `SOMETHING` | lower }}"]
inline = ["echo {{ lower `SOMETHING` }}"]
}
# template: hcl2_upgrade:2:35: executing "hcl2_upgrade" at <upper>: error calling upper: unhandled "upper" call:
# 1 error occurred upgrading the following block:
# unhandled "upper" call:
# there is no way to automatically upgrade the "upper" call.
# Please manually upgrade to `upper(var.example)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/upper for more infos.
provisioner "shell" {
inline = ["echo {{ `something` | upper }}"]
inline = ["echo {{ upper `something` }}"]
}
# template: hcl2_upgrade:2:21: executing "hcl2_upgrade" at <split `some-string` `-` 0>: error calling split: unhandled "split" call:
# 1 error occurred upgrading the following block:
# unhandled "split" call:
# there is no way to automatically upgrade the "split" call.
# Please manually upgrade to `split(separator, string)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/split for more infos.
@ -181,16 +185,18 @@ build {
}
# template: hcl2_upgrade:2:21: executing "hcl2_upgrade" at <replace_all `-` `/` build_name>: error calling replace_all: unhandled "replace_all" call:
# 1 error occurred upgrading the following block:
# unhandled "replace_all" call:
# there is no way to automatically upgrade the "replace_all" call.
# Please manually upgrade to `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.
provisioner "shell" {
inline = ["echo {{ replace_all `-` `/` build_name }}"]
inline = ["echo {{ replace_all `-` `/` `${build.name}` }}"]
}
# template: hcl2_upgrade:2:21: executing "hcl2_upgrade" at <replace `some-string` `-` `/` 1>: error calling replace: unhandled "replace" call:
# 1 error occurred upgrading the following block:
# unhandled "replace" call:
# there is no way to automatically upgrade the "replace" call.
# Please manually upgrade to `replace(string, substring, replacement)` or `regex_replace(string, substring, replacement)`
# Visit https://www.packer.io/docs/templates/hcl_templates/functions/string/replace or https://www.packer.io/docs/templates/hcl_templates/functions/string/regex_replace for more infos.

2
command/test-fixtures/hcl2_upgrade/without-annotations/input.json
View File

@ -180,7 +180,7 @@
{
"type": "shell",
"inline": [
"echo {{ replace `some-string` `-` `/` 1 }}"
"echo {{ replace `some-string` `-` 1 `/` }}"
]
},
{