open-vault/builtin/credential/aws/client.go

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package aws
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/go-cleanhttp"
"github.com/hashicorp/vault/logical"
)
// getClientConfig creates a aws-sdk-go config, which is used to create
// client that can interact with AWS API. This reads out the secret key
// and access key that was configured via 'config/client' endpoint and
// uses them to create credentials required to make the AWS API calls.
func getClientConfig(s logical.Storage) (*aws.Config, error) {
// Read the configured secret key and access key
config, err := clientConfigEntry(s)
if err != nil {
return nil, err
}
if config == nil {
return nil, fmt.Errorf(
"client credentials haven't been configured. Please configure\n" +
"them at the 'config/client' endpoint")
}
// Create the credentials required to access the API.
creds := credentials.NewStaticCredentials(config.AccessKey, config.SecretKey, "")
// Create a config that can be used to make the API calls.
return &aws.Config{
Credentials: creds,
Region: aws.String(config.Region),
HTTPClient: cleanhttp.DefaultClient(),
}, nil
}
// clientEC2 creates a client to interact with AWS EC2 API.
func clientEC2(s logical.Storage) (*ec2.EC2, error) {
awsConfig, err := getClientConfig(s)
if err != nil {
return nil, err
}
return ec2.New(session.New(awsConfig)), nil
}