2149157d49
This commit moves the deletion of all updates under the unsigned
acked updates key from AppendRemoteCommitChain to
AdvanceCommitChainTail. This is done because if we went down after
signing for these updates but before receiving a revocation, we would
incorrectly reject their commitment signature:
Alice Bob
-----add----->
-----sig----->
<----rev------
<----sig------
-----rev----->
<----fail-----
<----sig------
-----rev----->
-----sig----->
*reconnect*
<----rev------
<----add------
x----sig------
It is also important to note that filtering is required when we
receive a revocation to ensure that we aren't erroneously deleting
remote updates. Take the following state transitions:
Alice Bob
-----add----->
-----sig----->
<----rev------
<----sig------
-----rev----->
-----add----->
-----sig----->
<----fail-----
<----sig------
-----rev-----> (alice stores updates here)
<----rev------
In the above case, if Alice deleted all updates rather than filtering
when receiving the final revocation from Bob, then Alice would have
to force close the channel due to missing updates. Since Alice hasn't
signed for any of the unsigned acked updates, she should not filter any
of them out.
|
||
|---|---|---|
| .. | ||
| kvdb | ||
| migration | ||
| migration_01_to_11 | ||
| migration12 | ||
| migration13 | ||
| migration16 | ||
| migtest | ||
| addr_test.go | ||
| addr.go | ||
| channel_cache_test.go | ||
| channel_cache.go | ||
| channel_test.go | ||
| channel.go | ||
| codec.go | ||
| db_test.go | ||
| db.go | ||
| doc.go | ||
| duplicate_payments.go | ||
| error.go | ||
| fees.go | ||
| forwarding_log_test.go | ||
| forwarding_log.go | ||
| forwarding_package_test.go | ||
| forwarding_package.go | ||
| graph_test.go | ||
| graph.go | ||
| invoice_test.go | ||
| invoices.go | ||
| legacy_serialization.go | ||
| log.go | ||
| meta_test.go | ||
| meta.go | ||
| mp_payment.go | ||
| nodes_test.go | ||
| nodes.go | ||
| options.go | ||
| paginate.go | ||
| payment_control_test.go | ||
| payment_control.go | ||
| payments_test.go | ||
| payments.go | ||
| README.md | ||
| reject_cache_test.go | ||
| reject_cache.go | ||
| reports_test.go | ||
| reports.go | ||
| waitingproof_test.go | ||
| waitingproof.go | ||
| witness_cache_test.go | ||
| witness_cache.go | ||
channeldb
The channeldb implements the persistent storage engine for lnd and
generically a data storage layer for the required state within the Lightning
Network. The backing storage engine is
boltdb, an embedded pure-go key-value store
based off of LMDB.
The package implements an object-oriented storage model with queries and mutations flowing through a particular object instance rather than the database itself. The storage implemented by the objects includes: open channels, past commitment revocation states, the channel graph which includes authenticated node and channel announcements, outgoing payments, and invoices
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/channeldb