frostfs-node/pkg/local_object_storage/engine/delete.go
Dmitrii Stepanov 0920d848d0 [#135] get-object: Add tracing spans
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-12 06:52:00 +00:00

158 lines
4.1 KiB
Go

package engine
import (
"context"
"errors"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"go.uber.org/zap"
)
// DeletePrm groups the parameters of Delete operation.
type DeletePrm struct {
addr oid.Address
forceRemoval bool
}
// DeleteRes groups the resulting values of Delete operation.
type DeleteRes struct{}
// WithAddress is a Delete option to set the addresses of the objects to delete.
//
// Option is required.
func (p *DeletePrm) WithAddress(addr oid.Address) {
p.addr = addr
}
// WithForceRemoval is a Delete option to remove an object despite any
// restrictions imposed on deleting that object. Expected to be used
// only in control service.
func (p *DeletePrm) WithForceRemoval() {
p.forceRemoval = true
}
// Delete marks the objects to be removed.
//
// Returns an error if executions are blocked (see BlockExecution).
//
// Returns apistatus.ObjectLocked if at least one object is locked.
// In this case no object from the list is marked to be deleted.
//
// NOTE: Marks any object to be deleted (despite any prohibitions
// on operations with that object) if WithForceRemoval option has
// been provided.
func (e *StorageEngine) Delete(ctx context.Context, prm DeletePrm) (res DeleteRes, err error) {
err = e.execIfNotBlocked(func() error {
res, err = e.delete(ctx, prm)
return err
})
return
}
func (e *StorageEngine) delete(ctx context.Context, prm DeletePrm) (DeleteRes, error) {
if e.metrics != nil {
defer elapsed(e.metrics.AddDeleteDuration)()
}
var locked struct {
is bool
err apistatus.ObjectLocked
}
var splitInfo *objectSDK.SplitInfo
// Removal of a big object is done in multiple stages:
// 1. Remove the parent object. If it is locked or already removed, return immediately.
// 2. Otherwise, search for all objects with a particular SplitID and delete them too.
e.iterateOverSortedShards(prm.addr, func(_ int, sh hashedShard) (stop bool) {
var existsPrm shard.ExistsPrm
existsPrm.SetAddress(prm.addr)
resExists, err := sh.Exists(ctx, existsPrm)
if err != nil {
if shard.IsErrRemoved(err) || shard.IsErrObjectExpired(err) {
return true
}
var splitErr *objectSDK.SplitInfoError
if !errors.As(err, &splitErr) {
if !shard.IsErrNotFound(err) {
e.reportShardError(sh, "could not check object existence", err)
}
return false
}
splitInfo = splitErr.SplitInfo()
} else if !resExists.Exists() {
return false
}
var shPrm shard.InhumePrm
shPrm.MarkAsGarbage(prm.addr)
if prm.forceRemoval {
shPrm.ForceRemoval()
}
_, err = sh.Inhume(ctx, shPrm)
if err != nil {
e.reportShardError(sh, "could not inhume object in shard", err)
locked.is = errors.As(err, &locked.err)
return locked.is
}
// If a parent object is removed we should set GC mark on each shard.
return splitInfo == nil
})
if locked.is {
return DeleteRes{}, locked.err
}
if splitInfo != nil {
e.deleteChildren(ctx, prm.addr, prm.forceRemoval, splitInfo.SplitID())
}
return DeleteRes{}, nil
}
func (e *StorageEngine) deleteChildren(ctx context.Context, addr oid.Address, force bool, splitID *objectSDK.SplitID) {
var fs objectSDK.SearchFilters
fs.AddSplitIDFilter(objectSDK.MatchStringEqual, splitID)
var selectPrm shard.SelectPrm
selectPrm.SetFilters(fs)
selectPrm.SetContainerID(addr.Container())
var inhumePrm shard.InhumePrm
if force {
inhumePrm.ForceRemoval()
}
e.iterateOverSortedShards(addr, func(_ int, sh hashedShard) (stop bool) {
res, err := sh.Select(selectPrm)
if err != nil {
e.log.Warn("error during searching for object children",
zap.Stringer("addr", addr),
zap.String("error", err.Error()))
return false
}
for _, addr := range res.AddressList() {
inhumePrm.MarkAsGarbage(addr)
_, err = sh.Inhume(ctx, inhumePrm)
if err != nil {
e.log.Debug("could not inhume object in shard",
zap.Stringer("addr", addr),
zap.String("err", err.Error()))
continue
}
}
return false
})
}