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chanbackup: add new updateBackupFile method, write fresh backup on startup

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In this commit, we modify the sub-swapper to update the set of backups
files time it's tarted. We do this to ensure that each time we start,
we're up to sync with the current set of open channels. This also ensure
that we'll create a new back up file if this is the first time we're
starting up with this new feature.
This commit is contained in:
Olaoluwa Osuntokun
2019-02-08 19:22:06 -08:00
parent 0b8131c3be
commit af1dfe176e
3 changed files with 67 additions and 39 deletions
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22
chanbackup/pubsub_test.go
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@ -131,17 +131,23 @@ func TestSubSwapperIdempotentStartStop(t *testing.T) {
keyRing := &mockKeyRing{}
var (
swapper mockSwapper
chanNotifier mockChannelNotifier
)
var chanNotifier mockChannelNotifier
subSwapper, err := NewSubSwapper(nil, &chanNotifier, keyRing, &swapper)
swapper := newMockSwapper()
subSwapper, err := NewSubSwapper(nil, &chanNotifier, keyRing, swapper)
if err != nil {
t.Fatalf("unable to init subSwapper: %v", err)
}
subSwapper.Start()
if err := subSwapper.Start(); err != nil {
t.Fatalf("unable to start swapper: %v", err)
}
// The swapper should write the initial channel state as soon as it's
// active.
backupSet := make(map[wire.OutPoint]Single)
assertExpectedBackupSwap(t, swapper, subSwapper, keyRing, backupSet)
subSwapper.Start()
subSwapper.Stop()
@ -188,6 +194,10 @@ func TestSubSwapperUpdater(t *testing.T) {
}
defer subSwapper.Stop()
// The swapper should write the initial channel state as soon as it's
// active.
assertExpectedBackupSwap(t, swapper, subSwapper, keyRing, backupSet)
// Now that the sub-swapper is active, we'll notify to add a brand new
// channel to the channel state.
newChannel, err := genRandomOpenChannelShell()