frostfs-node/pkg/services/object/get/exec.go

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package getsvc
import (
"context"
"crypto/ecdsa"
clientcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object_manager/placement"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"go.uber.org/zap"
)
type statusError struct {
status int
err error
}
// nolint: containedctx
type execCtx struct {
svc *Service
ctx context.Context
prm RangePrm
statusError
splitInfo *objectSDK.SplitInfo
log *logger.Logger
collectedObject *objectSDK.Object
headOnly bool
curProcEpoch uint64
}
type execOption func(*execCtx)
const (
statusUndefined int = iota
statusOK
statusINHUMED
statusVIRTUAL
statusOutOfRange
)
func headOnly() execOption {
return func(c *execCtx) {
c.headOnly = true
}
}
func withPayloadRange(r *objectSDK.Range) execOption {
return func(c *execCtx) {
c.prm.rng = r
}
}
func (exec *execCtx) setLogger(l *logger.Logger) {
req := "GET"
if exec.headOnly {
req = "HEAD"
} else if exec.prm.rng != nil {
req = "GET_RANGE"
}
exec.log = &logger.Logger{Logger: l.With(
zap.String("request", req),
zap.Stringer("address", exec.prm.addr),
zap.Bool("raw", exec.prm.raw),
zap.Bool("local", exec.prm.common.LocalOnly()),
zap.Bool("with session", exec.prm.common.SessionToken() != nil),
zap.Bool("with bearer", exec.prm.common.BearerToken() != nil),
)}
}
func (exec execCtx) key() (*ecdsa.PrivateKey, error) {
if exec.prm.signerKey != nil {
// the key has already been requested and
// cached in the previous operations
return exec.prm.signerKey, nil
}
var sessionInfo *util.SessionInfo
if tok := exec.prm.common.SessionToken(); tok != nil {
sessionInfo = &util.SessionInfo{
ID: tok.ID(),
Owner: tok.Issuer(),
}
}
return exec.svc.keyStore.GetKey(sessionInfo)
}
func (exec *execCtx) canAssemble() bool {
return !exec.prm.raw && !exec.headOnly
}
func (exec *execCtx) initEpoch() bool {
exec.curProcEpoch = exec.prm.common.NetmapEpoch()
if exec.curProcEpoch > 0 {
return true
}
e, err := exec.svc.epochSource.Epoch()
switch {
default:
exec.status = statusUndefined
exec.err = err
exec.log.Debug("could not get current epoch number",
zap.String("error", err.Error()),
)
return false
case err == nil:
exec.curProcEpoch = e
return true
}
}
func (exec *execCtx) generateTraverser(addr oid.Address) (*placement.Traverser, bool) {
obj := addr.Object()
t, err := exec.svc.traverserGenerator.GenerateTraverser(addr.Container(), &obj, exec.curProcEpoch)
switch {
default:
exec.status = statusUndefined
exec.err = err
exec.log.Debug("could not generate container traverser",
zap.String("error", err.Error()),
)
return nil, false
case err == nil:
return t, true
}
}
func (exec execCtx) remoteClient(info clientcore.NodeInfo) (getClient, bool) {
c, err := exec.svc.clientCache.get(info)
switch {
default:
exec.status = statusUndefined
exec.err = err
exec.log.Debug("could not construct remote node client")
case err == nil:
return c, true
}
return nil, false
}
func mergeSplitInfo(dst, src *objectSDK.SplitInfo) {
if last, ok := src.LastPart(); ok {
dst.SetLastPart(last)
}
if link, ok := src.Link(); ok {
dst.SetLink(link)
}
if splitID := src.SplitID(); splitID != nil {
dst.SetSplitID(splitID)
}
}
func (exec *execCtx) writeCollectedHeader() bool {
if exec.prm.rng != nil {
return true
}
err := exec.prm.objWriter.WriteHeader(
exec.ctx,
exec.collectedObject.CutPayload(),
)
switch {
default:
exec.status = statusUndefined
exec.err = err
exec.log.Debug("could not write header",
zap.String("error", err.Error()),
)
case err == nil:
exec.status = statusOK
exec.err = nil
}
return exec.status == statusOK
}
func (exec *execCtx) writeObjectPayload(obj *objectSDK.Object) bool {
if exec.headOnly {
return true
}
err := exec.prm.objWriter.WriteChunk(exec.ctx, obj.Payload())
switch {
default:
exec.status = statusUndefined
exec.err = err
exec.log.Debug("could not write payload chunk",
zap.String("error", err.Error()),
)
case err == nil:
exec.status = statusOK
exec.err = nil
}
return err == nil
}
func (exec *execCtx) writeCollectedObject() {
if ok := exec.writeCollectedHeader(); ok {
exec.writeObjectPayload(exec.collectedObject)
}
}
// disableForwarding removes request forwarding closure from common
// parameters, so it won't be inherited in new execution contexts.
func (exec *execCtx) disableForwarding() {
exec.prm.SetRequestForwarder(nil)
}