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DeStream-public
Breeze
Commits
28587f2e
Commit
28587f2e
authored
Jun 27, 2017
by
Jeremy Bokobza
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better handling of the case where the chain is (for some reason) behind the wallet tip.
parent
636a9bdb
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1 changed file
with
23 additions
and
6 deletions
+23
-6
LightWalletSyncManager.cs
Breeze/src/Breeze.Wallet/LightWalletSyncManager.cs
+23
-6
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Breeze/src/Breeze.Wallet/LightWalletSyncManager.cs
View file @
28587f2e
...
@@ -36,16 +36,33 @@ namespace Breeze.Wallet
...
@@ -36,16 +36,33 @@ namespace Breeze.Wallet
/// <inheritdoc />
/// <inheritdoc />
public
Task
Initialize
()
public
Task
Initialize
()
{
{
this
.
walletTip
=
this
.
chain
.
GetBlock
(
this
.
walletManager
.
WalletTipHash
);
if
(
this
.
walletTip
==
null
)
throw
new
WalletException
(
"the wallet tip was not found in the main chain"
);
// if there is no wallet created yet, the wallet tip is the chain tip.
// if there is no wallet created yet, the wallet tip is the chain tip.
if
(!
this
.
walletManager
.
Wallets
.
Any
())
if
(!
this
.
walletManager
.
Wallets
.
Any
())
{
{
this
.
walletTip
=
this
.
chain
.
Tip
;
this
.
walletTip
=
this
.
chain
.
Tip
;
}
}
else
{
this
.
walletTip
=
this
.
chain
.
GetBlock
(
this
.
walletManager
.
WalletTipHash
);
if
(
this
.
walletTip
==
null
)
{
// the wallet tip was not found in the main chain.
// this can happen if the node crashes unexpectedly.
// to recover we need to find the first common fork
// with the best chain, as the wallet does not have a
// list of chain headers we use a BlockLocator and persist
// that in the wallet. the block locator will help finding
// a common fork and bringing the wallet back to a good
// state (behind the best chain)
var
locators
=
this
.
walletManager
.
Wallets
.
First
().
BlockLocator
;
BlockLocator
blockLocator
=
new
BlockLocator
{
Blocks
=
locators
.
ToList
()
};
var
fork
=
this
.
chain
.
FindFork
(
blockLocator
);
this
.
walletManager
.
RemoveBlocks
(
fork
);
this
.
walletManager
.
WalletTipHash
=
fork
.
HashBlock
;
this
.
walletTip
=
fork
;
}
}
// subscribe to receiving blocks and transactions
// subscribe to receiving blocks and transactions
BlockSubscriber
sub
=
new
BlockSubscriber
(
this
.
signals
.
Blocks
,
new
BlockObserver
(
this
));
BlockSubscriber
sub
=
new
BlockSubscriber
(
this
.
signals
.
Blocks
,
new
BlockObserver
(
this
));
...
...
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