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package smithy
import (
"context"
"fmt"
v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/internal/sdk"
"github.com/aws/smithy-go"
"github.com/aws/smithy-go/auth"
"github.com/aws/smithy-go/logging"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// V4SignerAdapter adapts v4.HTTPSigner to smithy http.Signer.
type V4SignerAdapter struct {
Signer v4.HTTPSigner
Logger logging.Logger
LogSigning bool
}
var _ (smithyhttp.Signer) = (*V4SignerAdapter)(nil)
// SignRequest signs the request with the provided identity.
func (v *V4SignerAdapter) SignRequest(ctx context.Context, r *smithyhttp.Request, identity auth.Identity, props smithy.Properties) error {
ca, ok := identity.(*CredentialsAdapter)
if !ok {
return fmt.Errorf("unexpected identity type: %T", identity)
}
name, ok := smithyhttp.GetSigV4SigningName(&props)
if !ok {
return fmt.Errorf("sigv4 signing name is required")
}
region, ok := smithyhttp.GetSigV4SigningRegion(&props)
if !ok {
return fmt.Errorf("sigv4 signing region is required")
}
hash := v4.GetPayloadHash(ctx)
err := v.Signer.SignHTTP(ctx, ca.Credentials, r.Request, hash, name, region, sdk.NowTime(), func(o *v4.SignerOptions) {
o.DisableURIPathEscaping, _ = smithyhttp.GetDisableDoubleEncoding(&props)
o.Logger = v.Logger
o.LogSigning = v.LogSigning
})
if err != nil {
return fmt.Errorf("sign http: %w", err)
}
return nil
}
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