forked from TrueCloudLab/frostfs-node
[#1502] meta: Add IsLocked
method
It gets an object and returns its locking status. Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
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2 changed files with 76 additions and 0 deletions
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@ -175,3 +175,35 @@ func freePotentialLocks(tx *bbolt.Tx, idCnr cid.ID, locker oid.ID) error {
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return nil
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}
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// IsLockedPrm groups the parameters of IsLocked operation.
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type IsLockedPrm struct {
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addr oid.Address
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}
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// SetAddress sets object address that will be checked for lock relations.
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func (i *IsLockedPrm) SetAddress(addr oid.Address) {
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i.addr = addr
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}
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// IsLockedRes groups the resulting values of IsLocked operation.
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type IsLockedRes struct {
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locked bool
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}
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// Locked describes the requested object status according to the metabase
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// current state.
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func (i IsLockedRes) Locked() bool {
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return i.locked
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}
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// IsLocked checks is the provided object is locked by any `LOCK`. Not found
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// object is considered as non-locked.
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//
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// Returns only non-logical errors related to underlying database.
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func (db *DB) IsLocked(prm IsLockedPrm) (res IsLockedRes, err error) {
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return res, db.boltDB.View(func(tx *bbolt.Tx) error {
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res.locked = objectLocked(tx, prm.addr.Container(), prm.addr.Object())
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return nil
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})
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}
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@ -169,6 +169,50 @@ func TestDB_Lock(t *testing.T) {
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})
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}
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func TestDB_IsLocked(t *testing.T) {
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db := newDB(t)
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// existing and locked objs
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objs, _ := putAndLockObj(t, db, 5)
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var prm meta.IsLockedPrm
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for _, obj := range objs {
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prm.SetAddress(objectcore.AddressOf(obj))
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res, err := db.IsLocked(prm)
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require.NoError(t, err)
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require.True(t, res.Locked())
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}
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// some rand obj
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prm.SetAddress(oidtest.Address())
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res, err := db.IsLocked(prm)
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require.NoError(t, err)
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require.False(t, res.Locked())
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// existing but not locked obj
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obj := objecttest.Object()
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var putPrm meta.PutPrm
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putPrm.SetObject(obj)
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_, err = db.Put(putPrm)
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require.NoError(t, err)
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prm.SetAddress(objectcore.AddressOf(obj))
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res, err = db.IsLocked(prm)
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require.NoError(t, err)
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require.False(t, res.Locked())
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}
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// putAndLockObj puts object, returns it and its locker.
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func putAndLockObj(t *testing.T, db *meta.DB, numOfLockedObjs int) ([]*object.Object, *object.Object) {
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cnr := cidtest.ID()
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