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config_prefix.go
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/
config_prefix.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package main
import (
"fmt"
"strings"
"github.com/hashicorp/consul-template/config"
)
// KeyFormat wraps configuration for a particular key in secrets set.
//
// Name is the name of the key
// Format is per-key format override, just like PrefixConfig.Format
type KeyFormat struct {
Format *string `mapstructure:"format"`
Name *string `mapstructure:"name"`
}
func (f *KeyFormat) Copy() *KeyFormat {
if f == nil {
return nil
}
r := KeyFormat{}
r.Name = f.Name
r.Format = f.Format
return &r
}
// KeyFormats holds a list of per-key override configurations.
type KeyFormats []*KeyFormat
func (f *KeyFormats) Copy() *KeyFormats {
if f == nil {
return nil
}
r := KeyFormats{}
for _, v := range *f {
r = append(r, v.Copy())
}
return &r
}
// PrefixConfig is a wrapper around some common options for Consul and Vault
// prefixes.
type PrefixConfig struct {
Format *string `mapstructure:"format"`
NoPrefix *bool `mapstructure:"no_prefix"`
Path *string `mapstructure:"path"`
Keys *KeyFormats `mapstructure:"key"`
}
func ParsePrefixConfig(s string) (*PrefixConfig, error) {
s = strings.TrimPrefix(s, "/")
return &PrefixConfig{
Path: config.String(s),
}, nil
}
func DefaultPrefixConfig() *PrefixConfig {
return &PrefixConfig{}
}
func (c *PrefixConfig) Copy() *PrefixConfig {
if c == nil {
return nil
}
var o PrefixConfig
o.Format = c.Format
o.NoPrefix = c.NoPrefix
o.Path = c.Path
if c.Keys != nil {
o.Keys = c.Keys.Copy()
}
return &o
}
func (c *PrefixConfig) Merge(o *PrefixConfig) *PrefixConfig {
if c == nil {
if o == nil {
return nil
}
return o.Copy()
}
if o == nil {
return c.Copy()
}
r := c.Copy()
if o.Format != nil {
r.Format = o.Format
}
if o.NoPrefix != nil {
r.NoPrefix = o.NoPrefix
}
if o.Path != nil {
r.Path = o.Path
}
if o.Keys != nil {
r.Keys = o.Keys.Copy()
}
return r
}
func (c *PrefixConfig) Finalize() {
if c.Format == nil {
c.Format = config.String("")
}
if c.NoPrefix == nil {
// Do not set a default value to allow differing defaults for Vault and Consul.
// Vault secrets include prefix by default while Consul keys exclude it.
}
if c.Path == nil {
c.Path = config.String("")
}
}
func (c *PrefixConfig) GoString() string {
if c == nil {
return "(*PrefixConfig)(nil)"
}
return fmt.Sprintf("&PrefixConfig{"+
"Format:%s, "+
"NoPrefix:%s, "+
"Path:%s"+
"}",
config.StringGoString(c.Format),
config.BoolGoString(c.NoPrefix),
config.StringGoString(c.Path),
)
}
type PrefixConfigs []*PrefixConfig
func DefaultPrefixConfigs() *PrefixConfigs {
return &PrefixConfigs{}
}
func (c *PrefixConfigs) Copy() *PrefixConfigs {
if c == nil {
return nil
}
o := make(PrefixConfigs, len(*c))
for i, t := range *c {
o[i] = t.Copy()
}
return &o
}
func (c *PrefixConfigs) Merge(o *PrefixConfigs) *PrefixConfigs {
if c == nil {
if o == nil {
return nil
}
return o.Copy()
}
if o == nil {
return c.Copy()
}
r := c.Copy()
*r = append(*r, *o...)
return r
}
func (c *PrefixConfigs) Finalize() {
if c == nil {
*c = *DefaultPrefixConfigs()
}
// entries without a path are invalid and ignored
confs := *c
i := 0
for _, t := range confs {
if config.StringVal(t.Path) == "" {
confs = append(confs[:i], confs[i+1:]...)
continue
}
t.Finalize()
i++
}
}
func (c *PrefixConfigs) GoString() string {
if c == nil {
return "(*PrefixConfigs)(nil)"
}
s := make([]string, len(*c))
for i, t := range *c {
s[i] = t.GoString()
}
return "{" + strings.Join(s, ", ") + "}"
}