aliyun / credentials-go

package credentials

import (

	"errors"

)

type providerChain struct {

	Providers []Provider

}

var defaultproviders = []Provider{providerEnv, providerProfile, providerInstance}

var defaultChain = newProviderChain(defaultproviders)

func newProviderChain(providers []Provider) Provider {

	return &providerChain{

		Providers: providers,

	}

}

func (p *providerChain) resolve() (*Configuration, error) {

	for _, provider := range p.Providers {

		config, err := provider.resolve()

		if err != nil {

			return nil, err

		} else if config == nil {

			continue

		}

		return config, err

	}

	return nil, errors.New("No credential found")