//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package http

// Object Lambda headers
const (
	AmzRequestRoute = "x-amz-request-route"
	AmzRequestToken = "x-amz-request-token"

	AmzFwdStatus                   = "x-amz-fwd-status"
	AmzFwdErrorCode                = "x-amz-fwd-error-code"

			return nil
		}
		return apiErr
	}
	return nil
}

// GetObjectLamdbaHandler - GET Object with transformed data via lambda functions
// ----------
// This implementation of the GET operation applies lambda functions and returns the
// response generated via the lambda functions. To use this API, you must have READ access
// to the object.

...
...
Object Lambda ARNs: arn:minio:s3-object-lambda::function:webhook

```

### Lambda Target with Auth Token

If your lambda target expects an authorization token then you can enable it per function target as follows

```
MINIO_LAMBDA_WEBHOOK_ENABLE_function=on MINIO_LAMBDA_WEBHOOK_ENDPOINT_function=http://localhost:5000 MINIO_LAMBDA_WEBHOOK_AUTH_TOKEN="mytoken" minio server /data &
```

		expectErr   bool
	}{
		{"", nil, true},
		{"arn:minio:s3-object-lambda:::", nil, true},
		{"arn:minio:s3-object-lambda::1:webhook:remote", nil, true},
		{"arn:aws:s3-object-lambda::1:webhook", nil, true},
		{"arn:minio:sns::1:webhook", nil, true},
		{"arn:minio:s3-object-lambda::1:webhook", &ARN{TargetID{"1", "webhook"}, ""}, false},
		{"arn:minio:s3-object-lambda:us-east-1:1:webhook", &ARN{TargetID{"1", "webhook"}, "us-east-1"}, false},
	}

package lambda

import "github.com/minio/minio/internal/event/target"

// Config - lambda target configuration structure, holds
// information about various lambda targets.
type Config struct {
	Webhook map[string]target.WebhookArgs `json:"webhook"`
}

const (
	defaultTarget = "1"
)

// NewConfig - initialize lambda config.
func NewConfig() Config {

package lambda

import (
	"github.com/minio/minio/internal/config"
	"github.com/minio/minio/internal/event/target"
)

// Help template inputs for all lambda targets
var (
	HelpWebhook = config.HelpKVS{
		config.HelpKV{
			Key:         target.WebhookEndpoint,
			Description: "webhook server endpoint e.g. http://localhost:8080/minio/lambda",
			Type:        "url",
			Sensitive:   true,

	WebhookClientCert = "client_cert"
	WebhookClientKey  = "client_key"

	EnvWebhookEnable     = "MINIO_LAMBDA_WEBHOOK_ENABLE"
	EnvWebhookEndpoint   = "MINIO_LAMBDA_WEBHOOK_ENDPOINT"
	EnvWebhookAuthToken  = "MINIO_LAMBDA_WEBHOOK_AUTH_TOKEN"
	EnvWebhookClientCert = "MINIO_LAMBDA_WEBHOOK_CLIENT_CERT"
	EnvWebhookClientKey  = "MINIO_LAMBDA_WEBHOOK_CLIENT_KEY"
)

// WebhookArgs - Webhook target arguments.
type WebhookArgs struct {

		return ""
	}

	return "arn:minio:s3-object-lambda:" + arn.region + ":" + arn.TargetID.String()
}

// ParseARN - parses string to ARN.
func ParseARN(s string) (*ARN, error) {
	// ARN must be in the format of arn:minio:s3-object-lambda:<REGION>:<ID>:<TYPE>
	if !strings.HasPrefix(s, "arn:minio:s3-object-lambda:") {
		return nil, &ErrInvalidARN{s}
	}

	tokens := strings.Split(s, ":")

 *
 * <p>Null nodes are strictly forbidden.
 *
 * <p>Because this is an abstract class, not an interface, you can't use a lambda expression to
 * implement it:
 *
 * <pre>{@code
 * // won't work
 * TreeTraverser<NodeType> traverser = node -> node.getChildNodes();
 * }</pre>
 *
 * Instead, you can pass a lambda expression to the {@code using} factory method:
 *
 * <pre>{@code

     * to avoid the extra class for the lambda (and maybe more for memoizingSupplier itself) and the
     * indirection.
     *
     * One thing to *avoid* is a change to make each Logger user use memoizingSupplier directly:
     * That may introduce an extra class for each lambda (currently a dozen).
     */
    Logger local = logger;
    if (local != null) {
      return local;