forked from TrueCloudLab/frostfs-node
356 lines
7.1 KiB
Go
356 lines
7.1 KiB
Go
package getsvc
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import (
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"context"
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"crypto/ecdsa"
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"errors"
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clientcore "github.com/nspcc-dev/neofs-node/pkg/core/client"
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"github.com/nspcc-dev/neofs-node/pkg/core/object"
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"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
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"github.com/nspcc-dev/neofs-node/pkg/util/logger"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
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addressSDK "github.com/nspcc-dev/neofs-sdk-go/object/address"
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oidSDK "github.com/nspcc-dev/neofs-sdk-go/object/id"
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"go.uber.org/zap"
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)
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type statusError struct {
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status int
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err error
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}
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type execCtx struct {
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svc *Service
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ctx context.Context
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prm RangePrm
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statusError
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infoSplit *objectSDK.SplitInfo
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log *logger.Logger
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collectedObject *objectSDK.Object
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curOff uint64
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head bool
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curProcEpoch uint64
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}
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type execOption func(*execCtx)
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const (
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statusUndefined int = iota
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statusOK
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statusINHUMED
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statusVIRTUAL
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statusOutOfRange
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)
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func headOnly() execOption {
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return func(c *execCtx) {
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c.head = true
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}
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}
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func withPayloadRange(r *objectSDK.Range) execOption {
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return func(c *execCtx) {
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c.prm.rng = r
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}
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}
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func (exec *execCtx) setLogger(l *logger.Logger) {
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req := "GET"
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if exec.headOnly() {
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req = "HEAD"
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} else if exec.ctxRange() != nil {
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req = "GET_RANGE"
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}
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exec.log = l.With(
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zap.String("request", req),
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zap.Stringer("address", exec.address()),
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zap.Bool("raw", exec.isRaw()),
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zap.Bool("local", exec.isLocal()),
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zap.Bool("with session", exec.prm.common.SessionToken() != nil),
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zap.Bool("with bearer", exec.prm.common.BearerToken() != nil),
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)
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}
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func (exec execCtx) context() context.Context {
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return exec.ctx
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}
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func (exec execCtx) isLocal() bool {
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return exec.prm.common.LocalOnly()
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}
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func (exec execCtx) isRaw() bool {
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return exec.prm.raw
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}
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func (exec execCtx) address() *addressSDK.Address {
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return exec.prm.addr
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}
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func (exec execCtx) isChild(obj *objectSDK.Object) bool {
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par := obj.Parent()
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return par != nil && equalAddresses(exec.address(), object.AddressOf(par))
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}
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func (exec execCtx) key() (*ecdsa.PrivateKey, error) {
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return exec.svc.keyStore.GetKey(exec.prm.common.SessionToken())
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}
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func (exec *execCtx) canAssemble() bool {
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return exec.svc.assembly && !exec.isRaw() && !exec.headOnly()
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}
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func (exec *execCtx) splitInfo() *objectSDK.SplitInfo {
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return exec.infoSplit
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}
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func (exec *execCtx) containerID() *cid.ID {
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cnr, ok := exec.address().ContainerID()
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if ok {
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return &cnr
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}
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return nil
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}
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func (exec *execCtx) ctxRange() *objectSDK.Range {
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return exec.prm.rng
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}
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func (exec *execCtx) headOnly() bool {
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return exec.head
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}
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func (exec *execCtx) netmapEpoch() uint64 {
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return exec.prm.common.NetmapEpoch()
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}
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func (exec *execCtx) netmapLookupDepth() uint64 {
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return exec.prm.common.NetmapLookupDepth()
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}
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func (exec *execCtx) initEpoch() bool {
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exec.curProcEpoch = exec.netmapEpoch()
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if exec.curProcEpoch > 0 {
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return true
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}
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e, err := exec.svc.currentEpochReceiver.currentEpoch()
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switch {
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default:
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exec.status = statusUndefined
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exec.err = err
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exec.log.Debug("could not get current epoch number",
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zap.String("error", err.Error()),
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)
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return false
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case err == nil:
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exec.curProcEpoch = e
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return true
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}
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}
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func (exec *execCtx) generateTraverser(addr *addressSDK.Address) (*placement.Traverser, bool) {
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t, err := exec.svc.traverserGenerator.GenerateTraverser(addr, exec.curProcEpoch)
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switch {
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default:
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exec.status = statusUndefined
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exec.err = err
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exec.log.Debug("could not generate container traverser",
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zap.String("error", err.Error()),
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)
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return nil, false
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case err == nil:
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return t, true
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}
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}
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func (exec *execCtx) getChild(id *oidSDK.ID, rng *objectSDK.Range, withHdr bool) (*objectSDK.Object, bool) {
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w := NewSimpleObjectWriter()
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p := exec.prm
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p.common = p.common.WithLocalOnly(false)
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p.objWriter = w
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p.SetRange(rng)
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cnr, _ := exec.address().ContainerID()
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addr := addressSDK.NewAddress()
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addr.SetContainerID(cnr)
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addr.SetObjectID(*id)
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p.addr = addr
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exec.statusError = exec.svc.get(exec.context(), p.commonPrm, withPayloadRange(rng))
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child := w.Object()
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ok := exec.status == statusOK
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if ok && withHdr && !exec.isChild(child) {
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exec.status = statusUndefined
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exec.err = errors.New("wrong child header")
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exec.log.Debug("parent address in child object differs")
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}
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return child, ok
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}
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func (exec *execCtx) headChild(id *oidSDK.ID) (*objectSDK.Object, bool) {
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childAddr := addressSDK.NewAddress()
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childAddr.SetContainerID(*exec.containerID())
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childAddr.SetObjectID(*id)
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p := exec.prm
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p.common = p.common.WithLocalOnly(false)
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p.addr = childAddr
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prm := HeadPrm{
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commonPrm: p.commonPrm,
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}
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w := NewSimpleObjectWriter()
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prm.SetHeaderWriter(w)
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err := exec.svc.Head(exec.context(), prm)
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switch {
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default:
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exec.status = statusUndefined
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exec.err = err
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exec.log.Debug("could not get child object header",
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zap.Stringer("child ID", id),
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zap.String("error", err.Error()),
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)
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return nil, false
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case err == nil:
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child := w.Object()
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if _, ok := child.ParentID(); ok && !exec.isChild(child) {
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exec.status = statusUndefined
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exec.log.Debug("parent address in child object differs")
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} else {
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exec.status = statusOK
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exec.err = nil
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}
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return child, true
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}
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}
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func (exec execCtx) remoteClient(info clientcore.NodeInfo) (getClient, bool) {
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c, err := exec.svc.clientCache.get(info)
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switch {
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default:
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exec.status = statusUndefined
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exec.err = err
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exec.log.Debug("could not construct remote node client")
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case err == nil:
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return c, true
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}
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return nil, false
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}
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func mergeSplitInfo(dst, src *objectSDK.SplitInfo) {
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if last, ok := src.LastPart(); ok {
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dst.SetLastPart(last)
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}
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if link, ok := src.Link(); ok {
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dst.SetLink(link)
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}
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if splitID := src.SplitID(); splitID != nil {
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dst.SetSplitID(splitID)
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}
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}
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func (exec *execCtx) writeCollectedHeader() bool {
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if exec.ctxRange() != nil {
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return true
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}
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err := exec.prm.objWriter.WriteHeader(
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exec.collectedObject.CutPayload(),
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)
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switch {
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default:
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exec.status = statusUndefined
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exec.err = err
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exec.log.Debug("could not write header",
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zap.String("error", err.Error()),
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)
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case err == nil:
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exec.status = statusOK
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exec.err = nil
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}
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return exec.status == statusOK
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}
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func (exec *execCtx) writeObjectPayload(obj *objectSDK.Object) bool {
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if exec.headOnly() {
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return true
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}
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err := exec.prm.objWriter.WriteChunk(obj.Payload())
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switch {
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default:
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exec.status = statusUndefined
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exec.err = err
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exec.log.Debug("could not write payload chunk",
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zap.String("error", err.Error()),
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)
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case err == nil:
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exec.status = statusOK
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exec.err = nil
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}
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return err == nil
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}
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func (exec *execCtx) writeCollectedObject() {
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if ok := exec.writeCollectedHeader(); ok {
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exec.writeObjectPayload(exec.collectedObject)
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}
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}
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// isForwardingEnabled returns true if common execution
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// parameters has request forwarding closure set.
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func (exec execCtx) isForwardingEnabled() bool {
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return exec.prm.forwarder != nil
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}
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// disableForwarding removes request forwarding closure from common
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// parameters, so it won't be inherited in new execution contexts.
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func (exec *execCtx) disableForwarding() {
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exec.prm.SetRequestForwarder(nil)
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}
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