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link33
plugin
Commits
b03329fb
Commit
b03329fb
authored
Mar 27, 2019
by
mdj33
Committed by
33cn
Mar 27, 2019
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para.go
plugin/consensus/para/para.go
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plugin/consensus/para/para.go
View file @
b03329fb
...
...
@@ -361,14 +361,14 @@ func (client *client) getLastBlockInfo() (int64, *types.Block, error) {
plog
.
Error
(
"Parachain GetBlockedSeq fail"
,
"err"
,
err
)
return
-
2
,
nil
,
err
}
if
lastBlock
.
Height
>
0
||
blockedSeq
==
-
1
{
return
blockedSeq
,
lastBlock
,
nil
}
// lastBlockHeight=0 && blockedSeq != -1 创世区块本身没有记录主块hash,有两种场景:
// 1, blockedSeq =-1,也就是从主链0高度同步区块,主链seq从0开始,对seq=0的区块做特殊处理,不校验parentHash
// 2, blockedSeq !=-1, 也就是从主链n高度同步区块,此时创世区块倒退一个seq,seq=n-1, 可以获取到主链n-1的hash
// 3 有可能n-1 seq 是回退block 获取的pareHash就不准,这里获取0区块 n+1seq的parentHash
// 平行链创世区块特殊场景:
// 1,创世区块seq从-1开始,也就是从主链0高度同步区块,主链seq从0开始,平行链对seq=0的区块做特殊处理,不校验parentHash
// 2,创世区块seq不是-1, 也就是从主链seq=n高度同步区块,此时创世区块倒退一个seq,blockedSeq=n-1,
// 由于创世区块本身没有记录主块hash,需要在此处获取,有可能n-1 seq 是回退block 获取的Hash不对,这里获取主链第n seq的parentHash
// 在genesis create时候直接设mainhash也可以,但是会导致已有平行链所有block hash变化
main
,
err
:=
client
.
GetBlockOnMainBySeq
(
blockedSeq
+
1
)
if
err
!=
nil
{
...
...
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