frostfs-sdk-go/client/common.go

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package client
import (
"fmt"
"github.com/nspcc-dev/neofs-api-go/v2/signature"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
)
// common interface of resulting structures with API status.
type resCommon interface {
setStatus(apistatus.Status)
}
// structure is embedded to all resulting types in order to inherit status-related methods.
type statusRes struct {
st apistatus.Status
}
// setStatus implements resCommon interface method.
func (x *statusRes) setStatus(st apistatus.Status) {
x.st = st
}
// Status returns server's status return.
//
// Use apistatus package functionality to handle the status.
func (x statusRes) Status() apistatus.Status {
return x.st
}
// checks response signature and write client error if it is not correct (in this case returns true).
func isInvalidSignatureV2(res *processResponseV2Res, resp responseV2) bool {
err := signature.VerifyServiceMessage(resp)
isErr := err != nil
if isErr {
res.cliErr = fmt.Errorf("invalid response signature: %w", err)
}
return isErr
}
type processResponseV2Prm struct {
callOpts *callOptions
resp responseV2
}
type processResponseV2Res struct {
statusRes resCommon
cliErr error
}
// performs common actions of response processing and writes any problem as a result status or client error
// (in both cases returns true).
//
// Actions:
// * verify signature (internal);
// * call response callback (internal).
func (c *clientImpl) processResponseV2(res *processResponseV2Res, prm processResponseV2Prm) bool {
// verify response structure
if isInvalidSignatureV2(res, prm.resp) {
return true
}
// handle response meta info
if err := c.handleResponseInfoV2(prm.callOpts, prm.resp); err != nil {
res.cliErr = err
return true
}
// set result status
st := apistatus.FromStatusV2(prm.resp.GetMetaHeader().GetStatus())
res.statusRes.setStatus(st)
return !apistatus.IsSuccessful(st)
}