frostfs-s3-gw/api/middleware/util.go

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package middleware
import (
"context"
"fmt"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/creds/accessbox"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
)
// keyWrapper is wrapper for context keys.
type keyWrapper string
// boxKey is an ID used to store Box in a context.
var boxKey = keyWrapper("__context_box_key")
// GetBoxData extracts accessbox.Box from context.
func GetBoxData(ctx context.Context) (*accessbox.Box, error) {
data, ok := ctx.Value(boxKey).(*Box)
if !ok || data == nil {
return nil, fmt.Errorf("couldn't get box from context")
}
if data.AccessBox == nil {
return nil, fmt.Errorf("couldn't get box data from context")
}
box := data.AccessBox
if box.Gate == nil {
box.Gate = &accessbox.GateData{}
}
return box, nil
}
// GetAuthHeaders extracts auth.AuthHeader from context.
func GetAuthHeaders(ctx context.Context) (*AuthHeader, error) {
data, ok := ctx.Value(boxKey).(*Box)
if !ok || data == nil {
return nil, fmt.Errorf("couldn't get box from context")
}
return data.AuthHeaders, nil
}
// GetClientTime extracts time.Time from context.
func GetClientTime(ctx context.Context) (time.Time, error) {
data, ok := ctx.Value(boxKey).(*Box)
if !ok || data == nil {
return time.Time{}, fmt.Errorf("couldn't get box from context")
}
if data.ClientTime.IsZero() {
return time.Time{}, fmt.Errorf("couldn't get client time from context")
}
return data.ClientTime, nil
}
// GetAccessBoxAttrs extracts []object.Attribute from context.
func GetAccessBoxAttrs(ctx context.Context) ([]object.Attribute, error) {
data, ok := ctx.Value(boxKey).(*Box)
if !ok || data == nil {
return nil, fmt.Errorf("couldn't get box from context")
}
return data.Attributes, nil
}
// SetBox sets Box in the context.
func SetBox(ctx context.Context, box *Box) context.Context {
return context.WithValue(ctx, boxKey, box)
}