mirror of https://github.com/hashicorp/consul
188 lines
2.9 KiB
Go
188 lines
2.9 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package cluster
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import (
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"encoding/json"
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"fmt"
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"strings"
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"github.com/mitchellh/copystructure"
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)
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// TODO: rename file
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type ConfigBuilder struct {
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nodes map[string]any
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}
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var _ json.Marshaler = (*ConfigBuilder)(nil)
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func (b *ConfigBuilder) Clone() (*ConfigBuilder, error) {
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if b.nodes == nil {
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return &ConfigBuilder{}, nil
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}
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raw, err := copystructure.Copy(b.nodes)
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if err != nil {
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return nil, err
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}
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return &ConfigBuilder{
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nodes: raw.(map[string]any),
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}, nil
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}
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func (b *ConfigBuilder) MarshalJSON() ([]byte, error) {
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if b == nil || len(b.nodes) == 0 {
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return []byte("{}"), nil
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}
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return json.Marshal(b.nodes)
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}
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func (b *ConfigBuilder) String() string {
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d, err := json.MarshalIndent(b, "", " ")
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if err != nil {
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return "<ERR: " + err.Error() + ">"
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}
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return string(d)
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}
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func (b *ConfigBuilder) GetString(k string) (string, bool) {
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raw, ok := b.Get(k)
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if !ok {
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return "", false
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}
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return raw.(string), true
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}
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func (b *ConfigBuilder) GetBool(k string) (bool, bool) {
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raw, ok := b.Get(k)
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if !ok {
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return false, false
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}
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return raw.(bool), true
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}
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func (b *ConfigBuilder) Get(k string) (any, bool) {
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if b.nodes == nil {
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return nil, false
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}
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parts := strings.Split(k, ".")
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switch len(parts) {
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case 0:
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return nil, false
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case 1:
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v, ok := b.nodes[k]
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return v, ok
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}
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parents, child := parts[0:len(parts)-1], parts[len(parts)-1]
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curr := b.nodes
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for _, parent := range parents {
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next, ok := curr[parent]
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if !ok {
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return nil, false
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}
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curr = next.(map[string]any)
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}
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v, ok := curr[child]
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return v, ok
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}
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func (b *ConfigBuilder) Set(k string, v any) {
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if b.nodes == nil {
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b.nodes = make(map[string]any)
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}
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validateValueType(v)
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parts := strings.Split(k, ".")
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switch len(parts) {
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case 0:
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return
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case 1:
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b.nodes[k] = v
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return
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}
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parents, child := parts[0:len(parts)-1], parts[len(parts)-1]
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curr := b.nodes
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for _, parent := range parents {
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next, ok := curr[parent]
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if ok {
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curr = next.(map[string]any)
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} else {
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next := make(map[string]any)
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curr[parent] = next
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curr = next
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}
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}
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curr[child] = v
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}
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func validateValueType(v any) {
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switch x := v.(type) {
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case string:
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case int:
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case bool:
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case []string:
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case []any:
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for _, item := range x {
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validateSliceValueType(item)
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}
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default:
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panic(fmt.Sprintf("unexpected type %T", v))
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}
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}
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func validateSliceValueType(v any) {
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switch v.(type) {
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case string:
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case int:
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case bool:
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case *ConfigBuilder:
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default:
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panic(fmt.Sprintf("unexpected type %T", v))
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}
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}
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func (b *ConfigBuilder) Unset(k string) {
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if b.nodes == nil {
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return
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}
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parts := strings.Split(k, ".")
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switch len(parts) {
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case 0:
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return
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case 1:
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delete(b.nodes, k)
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return
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}
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parents, child := parts[0:len(parts)-1], parts[len(parts)-1]
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curr := b.nodes
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for _, parent := range parents {
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next, ok := curr[parent]
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if !ok {
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return
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}
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curr = next.(map[string]any)
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}
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delete(curr, child)
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}
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