// NewCredentialsWithClient returns a pointer to a new Credentials object wrapping
// the EC2RoleProvider. Takes a EC2Metadata client to use when connecting to EC2
// metadata service.
func NewCredentialsWithClient(client *ec2metadata.EC2Metadata, options ...func(*EC2RoleProvider)) *credentials.Credentials {
	p := &EC2RoleProvider{
		Client: client,
	}

	for _, option := range options {
		option(p)
	}

	return credentials.NewCredentials(p)
}
// NewCredentials returns a pointer to a new Credentials object wrapping
// the EC2RoleProvider. Takes a ConfigProvider to create a EC2Metadata client.
// The ConfigProvider is satisfied by the session.Session type.
func NewCredentials(c client.ConfigProvider, options ...func(*EC2RoleProvider)) *credentials.Credentials {
	p := &EC2RoleProvider{
		Client: ec2metadata.New(c),
	}

	for _, option := range options {
		option(p)
	}

	return credentials.NewCredentials(p)
}
// NewCredentialsWithClient returns a pointer to a new Credentials object wrapping the
// AssumeRoleProvider. The credentials will expire every 15 minutes and the
// role will be named after a nanosecond timestamp of this operation.
//
// Takes an AssumeRoler which can be satisfiede by the STS client.
func NewCredentialsWithClient(svc AssumeRoler, roleARN string, options ...func(*AssumeRoleProvider)) *credentials.Credentials {
	p := &AssumeRoleProvider{
		Client:   svc,
		RoleARN:  roleARN,
		Duration: DefaultDuration,
	}

	for _, option := range options {
		option(p)
	}

	return credentials.NewCredentials(p)
}
// NewCredentials returns a pointer to a new Credentials object wrapping the
// AssumeRoleProvider. The credentials will expire every 15 minutes and the
// role will be named after a nanosecond timestamp of this operation.
//
// Takes a Config provider to create the STS client. The ConfigProvider is
// satisfied by the session.Session type.
func NewCredentials(c client.ConfigProvider, roleARN string, options ...func(*AssumeRoleProvider)) *credentials.Credentials {
	p := &AssumeRoleProvider{
		Client:   sts.New(c),
		RoleARN:  roleARN,
		Duration: DefaultDuration,
	}

	for _, option := range options {
		option(p)
	}

	return credentials.NewCredentials(p)
}