andrey
0cf039a3bc
All checks were successful
Go Action / goaction (pull_request) Successful in 1m20s
84 lines
1.4 KiB
Go
84 lines
1.4 KiB
Go
package chain
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"gitoa.ru/go-4devs/config"
|
|
)
|
|
|
|
const Name = "chain"
|
|
|
|
type Providers interface {
|
|
config.BindProvider
|
|
config.Providers
|
|
}
|
|
|
|
func New(c ...config.Provider) Providers {
|
|
return chain(c)
|
|
}
|
|
|
|
type chain []config.Provider
|
|
|
|
func (c chain) Value(ctx context.Context, name ...string) (config.Value, error) {
|
|
for _, in := range c {
|
|
if val, err := in.Value(ctx, name...); err == nil {
|
|
return val, nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("%w", config.ErrNotFound)
|
|
}
|
|
|
|
func (c chain) Bind(ctx context.Context, def config.Variables) error {
|
|
for _, input := range c {
|
|
if prov, ok := input.(config.BindProvider); ok {
|
|
if err := prov.Bind(ctx, def); err != nil {
|
|
return fmt.Errorf("%T:%w", input, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (c chain) Name() string {
|
|
return Name
|
|
}
|
|
|
|
func (c chain) Provider(name string) (config.Provider, error) {
|
|
if c.Name() == name {
|
|
return c, nil
|
|
}
|
|
|
|
for _, prov := range c {
|
|
if prov.Name() == name {
|
|
return prov, nil
|
|
}
|
|
|
|
cprov, ok := prov.(config.Providers)
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
if in, err := cprov.Provider(name); err == nil {
|
|
return in, nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("prov[%v]:%w", c.Name(), config.ErrNotFound)
|
|
}
|
|
|
|
func (c chain) Names() []string {
|
|
names := make([]string, 0, len(c))
|
|
for _, prov := range c {
|
|
names = append(names, prov.Name())
|
|
|
|
if cprov, ok := prov.(config.Providers); ok {
|
|
names = append(names, cprov.Names()...)
|
|
}
|
|
}
|
|
|
|
return names
|
|
}
|