frostfs-node/pkg/services/object/search/v2/util.go
Dmitrii Stepanov 481a1ca6f3 [] linter: Add gocognit linter
Code with high cognitive complexity is hard intuitively to understand

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-03-21 09:54:41 +03:00

172 lines
4.3 KiB
Go

package searchsvc
import (
"errors"
"fmt"
"io"
"sync"
objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc"
rpcclient "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/signature"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/network"
objectSvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/internal"
searchsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/search"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
)
// nolint: funlen, gocognit
func (s *Service) toPrm(req *objectV2.SearchRequest, stream objectSvc.SearchStream) (*searchsvc.Prm, error) {
body := req.GetBody()
cnrV2 := body.GetContainerID()
if cnrV2 == nil {
return nil, errors.New("missing container ID")
}
var id cid.ID
err := id.ReadFromV2(*cnrV2)
if err != nil {
return nil, fmt.Errorf("invalid container ID: %w", err)
}
meta := req.GetMetaHeader()
commonPrm, err := util.CommonPrmFromV2(req)
if err != nil {
return nil, err
}
p := new(searchsvc.Prm)
p.SetCommonParameters(commonPrm)
p.SetWriter(&streamWriter{
stream: stream,
})
if !commonPrm.LocalOnly() {
var onceResign sync.Once
key, err := s.keyStorage.GetKey(nil)
if err != nil {
return nil, err
}
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.MultiAddressClient, pubkey []byte) ([]oid.ID, error) {
var err error
// once compose and resign forwarding request
onceResign.Do(func() {
// compose meta header of the local server
metaHdr := new(session.RequestMetaHeader)
metaHdr.SetTTL(meta.GetTTL() - 1)
// TODO: #1165 think how to set the other fields
metaHdr.SetOrigin(meta)
req.SetMetaHeader(metaHdr)
err = signature.SignServiceMessage(key, req)
})
if err != nil {
return nil, err
}
var searchStream *rpc.SearchResponseReader
err = c.RawForAddress(addr, func(cli *rpcclient.Client) error {
searchStream, err = rpc.SearchObjects(cli, req, rpcclient.WithContext(stream.Context()))
return err
})
if err != nil {
return nil, err
}
// code below is copy-pasted from c.SearchObjects implementation,
// perhaps it is worth highlighting the utility function in frostfs-api-go
var (
searchResult []oid.ID
resp = new(objectV2.SearchResponse)
)
for {
// receive message from server stream
err := searchStream.Read(resp)
if err != nil {
if errors.Is(err, io.EOF) {
break
}
return nil, fmt.Errorf("reading the response failed: %w", err)
}
// verify response key
if err = internal.VerifyResponseKeyV2(pubkey, resp); err != nil {
return nil, err
}
// verify response structure
if err := signature.VerifyServiceMessage(resp); err != nil {
return nil, fmt.Errorf("could not verify %T: %w", resp, err)
}
chunk := resp.GetBody().GetIDList()
var id oid.ID
for i := range chunk {
err = id.ReadFromV2(chunk[i])
if err != nil {
return nil, fmt.Errorf("invalid object ID: %w", err)
}
searchResult = append(searchResult, id)
}
}
return searchResult, nil
}))
}
p.WithContainerID(id)
p.WithSearchFilters(object.NewSearchFiltersFromV2(body.GetFilters()))
return p, nil
}
func groupAddressRequestForwarder(f func(network.Address, client.MultiAddressClient, []byte) ([]oid.ID, error)) searchsvc.RequestForwarder {
return func(info client.NodeInfo, c client.MultiAddressClient) ([]oid.ID, error) {
var (
firstErr error
res []oid.ID
key = info.PublicKey()
)
info.AddressGroup().IterateAddresses(func(addr network.Address) (stop bool) {
var err error
defer func() {
stop = err == nil
if stop || firstErr == nil {
firstErr = err
}
// would be nice to log otherwise
}()
res, err = f(addr, c, key)
return
})
return res, firstErr
}
}