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Kirill Smelkov
wendelin.core
Commits
9af3baa8
Commit
9af3baa8
authored
May 11, 2021
by
Kirill Smelkov
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parent
2716a284
Changes
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2 changed files
with
92 additions
and
11 deletions
+92
-11
wcfs/δbtail.go
wcfs/δbtail.go
+91
-11
wcfs/δbtail_test.go
wcfs/δbtail_test.go
+1
-0
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wcfs/δbtail.go
View file @
9af3baa8
...
...
@@ -637,22 +637,96 @@ func (tidx trackIndex) AddPath(path []zodb.Oid) {
// rebuild rebuilds ΔBtail taking trackNew requests into account. XXX
// XXX place
func
(
δBtail
*
ΔBtail
)
rebuild
()
{
func
(
δBtail
*
ΔBtail
)
rebuild
()
(
err
error
)
{
defer
xerr
.
Context
(
&
err
,
"ΔBtail rebuild"
)
// XXX locking
/*
// vδT <- merge treediff(lo..hi/trackNew)
trackNew
:=
δBtail
.
trackNew
δBtail
.
trackNew
=
trackIndex
{}
// go backwards and merge vδT <- treediff(lo..hi/trackNew)
vδZ
:=
δBtail
.
δZtail
.
Data
()
for
i
:=
len
(
vδZ
)
-
1
;
i
>=
0
;
i
--
{
δZ
:=
vδZ
[
i
]
δZTC, δtopsByRoot := δBtail.δZConnectTracked(δZ, trackNew)
// XXX dup wrt Update?
δZTC
,
δtopsByRoot
:=
δZConnectTracked
(
δZ
.
Changev
,
trackNew
)
// XXX len(δtopsByRoot) == 0 -> skip
var
atPrev
zodb
.
Tid
if
i
>
0
{
atPrev
=
vδZ
[
i
-
1
]
.
Rev
}
else
{
atPrev
=
δBtail
.
δZtail
.
Tail
()
}
// open ZODB connection corresponding to "current" and "prev" states
txn
,
ctx
:=
transaction
.
New
(
context
.
TODO
())
defer
txn
.
Abort
()
// XXX -> into func() or don't use defer
zconnPrev
,
err
:=
δBtail
.
db
.
Open
(
ctx
,
&
zodb
.
ConnOptions
{
At
:
atPrev
})
if
err
!=
nil
{
return
err
}
zconnCurr
,
err
:=
δBtail
.
db
.
Open
(
ctx
,
&
zodb
.
ConnOptions
{
At
:
δZ
.
Rev
})
if
err
!=
nil
{
return
err
}
for
root
,
δtops
:=
range
δtopsByRoot
{
holeIdx
:=
treeSetKey
{}
// XXX stub
// diff backwards curr -> prev
δT
,
err
:=
treediff
(
ctx
,
root
,
δtops
,
δZTC
,
trackNew
,
holeIdx
,
zconnCurr
,
zconnPrev
)
if
err
!=
nil
{
return
err
}
if
len
(
δT
)
==
0
{
// an object might be resaved without change
continue
}
δTtail
,
ok
:=
δBtail
.
byRoot
[
root
]
if
!
ok
{
// this root was not tracked before -> create δTtail for it with empty changes
var
vδT
[]
ΔTree
for
i
:=
0
;
i
<
len
(
vδZ
);
i
++
{
vδT
=
append
(
vδT
,
ΔTree
{
Rev
:
vδZ
[
i
]
.
Rev
,
ΔKV
:
make
(
map
[
Key
]
ΔValue
)})
}
δTtail
=
&
ΔTtail
{
vδT
:
vδT
,
// XXX KVAtTail: ...,
// XXX lastRevOf: ...,
}
δBtail
.
byRoot
[
root
]
=
δTtail
}
// δTtail.vδT[i] <- merge δT*
δTi
:=
δTtail
.
vδT
[
i
]
for
k
,
δv
:=
range
δT
{
// the diff was backward; δTtail entries are with diff forward
δv
.
New
,
δv
.
Old
=
δv
.
Old
,
δv
.
New
δv_
,
already
:=
δTi
.
ΔKV
[
k
]
if
already
{
if
δv
!=
δv_
{
panicf
(
"[%v] inconsistent δv:
\n
δTi: %v
\n
δT: %v"
,
k
,
δTi
,
δT
)
}
}
else
{
δTi
.
ΔKV
[
k
]
=
δv
}
}
// XXX update .KVAtTail, .lastRevOf
}
}
*/
// merge .trackNew into .trackIdx
δBtail
.
trackIdx
.
Update
(
δBtail
.
trackNew
)
δBtail
.
trackNew
=
trackIndex
{}
// merge trackNew into .trackIdx
δBtail
.
trackIdx
.
Update
(
trackNew
)
return
nil
}
// Update updates δB with per-object level ZODB changes.
...
...
@@ -677,7 +751,10 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
tracef
(
"trackIdx: %v
\n
"
,
δBtail
.
trackIdx
)
tracef
(
"holeIdxByRoot: %v
\n
"
,
δBtail
.
holeIdxByRoot
)
δZTC
,
δtopsByRoot
:=
δZConnectTracked
(
δZ
,
δBtail
.
trackIdx
)
// XXX dup wrt rebuild?
δZTC
,
δtopsByRoot
:=
δZConnectTracked
(
δZ
.
Changev
,
δBtail
.
trackIdx
)
δB
:=
ΔB
{
Rev
:
δZ
.
Tid
,
ByRoot
:
make
(
map
[
zodb
.
Oid
]
map
[
Key
]
ΔValue
)}
...
...
@@ -726,8 +803,8 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
// for example for e.g. t₀->t₁->b₂ if δZ/T={t₀ b₂} -> δZ/TC=δZ/T+{t₁}
//
// δtopsByRoot = {} root -> {top changed nodes in that tree}
func
δZConnectTracked
(
δZv
*
zodb
.
EventCommit
,
T
trackIndex
)
(
δZTC
SetOid
,
δtopsByRoot
map
[
zodb
.
Oid
]
SetOid
)
{
δZ
:=
SetOid
{};
for
_
,
δ
:=
range
δZv
.
Changev
{
δZ
.
Add
(
δ
)
}
func
δZConnectTracked
(
δZv
[]
zodb
.
Oid
,
T
trackIndex
)
(
δZTC
SetOid
,
δtopsByRoot
map
[
zodb
.
Oid
]
SetOid
)
{
δZ
:=
SetOid
{};
for
_
,
δ
:=
range
δZv
{
δZ
.
Add
(
δ
)
}
δZTC
=
SetOid
{}
δtopsByRoot
=
map
[
zodb
.
Oid
]
SetOid
{}
...
...
@@ -951,6 +1028,9 @@ func (rs rangeSplit) String() string {
// δtops is set of top nodes for changed subtrees.
// δZTC is connected(δZ/T) - connected closure for subset of δZ(old..new) that
// touches tracked nodes of T.
//
// XXX trackIdx is updated
// XXX holeIdx is updated
func
treediff
(
ctx
context
.
Context
,
root
zodb
.
Oid
,
δtops
SetOid
,
δZTC
SetOid
,
trackIdx
trackIndex
,
holeIdx
treeSetKey
,
zconnOld
,
zconnNew
*
zodb
.
Connection
)
(
δT
map
[
Key
]
ΔValue
,
err
error
)
{
defer
xerr
.
Contextf
(
&
err
,
"treediff %s..%s %s"
,
zconnOld
.
At
(),
zconnNew
.
At
(),
root
)
...
...
wcfs/δbtail_test.go
View file @
9af3baa8
...
...
@@ -1020,6 +1020,7 @@ func xverifyΔBTail_rebuild_TR(t *testing.T, db *zodb.DB, δbtail *ΔBtail, tj *
// XXX verify Get
// verify SliceByRootRev XXX -> verify δbtail.byRoot[treeRoot] directly
// XXX +KVAtTail, +lastRevOf
l
:=
len
(
vδTok
)
vatOK
:=
make
([]
zodb
.
Tid
,
l
)
t0
:=
tj
...
...
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