Commit Graph

19 Commits

Author SHA1 Message Date
Olaoluwa Osuntokun
48491a7fee
channeldb: fix commit key state corruption bug
This commit fixes a bug caused by overriding the prefix key for storing
commitment keys with the first few bytes of a channel’s channel point.

Once a channel was deleted, then all future channels would result in a
panic due to a nil pointer deference since the prefix key was mutated,
causing all future stores/gets to fail.
2016-07-12 17:00:08 -07:00
Olaoluwa Osuntokun
1f7d9b6425
channeldb: also store their current revocation hash
We now also store their current revocation hash which is given to us
along with the revocation key once an initial HTLC is added to a
commitment transaction.
2016-07-05 16:48:31 -07:00
Olaoluwa Osuntokun
06af4b130f
channeldb: remove theirCommitTx, store latest commit sig 2016-07-05 16:44:52 -07:00
Olaoluwa Osuntokun
582b83ada3
channeldb: update channel state to revocation keys + new elkrem API
This commit updates the stored on-disk channel state to store a current
revocation key rather than a revocation hash. This change coincides
with the new commitment transaction format which uses revocation keys
rather than hashes.

Additionally, this commit updates the decoding/encoding of local+remote
elkrem trees to the latest changes in the elkrem API.
2016-06-30 11:40:12 -07:00
Olaoluwa Osuntokun
1a48db3039
channeldb: stored un-revoked hashes are now 32 bytes 2016-06-26 22:59:02 -07:00
Olaoluwa Osuntokun
b88b2d4c91
channeldb: implement snapshots for active channels 2016-06-22 22:05:53 -07:00
Olaoluwa Osuntokun
f1f27b2046
channeldb: add ability to close active channels
This commit introduces the concept of “closing” an already active
channel. Closing a channel causes all the channel state to be purged
from the database, and also triggers the creation of a small “summary”
kept concerning details of the previously open channel.

This commit also updates the previous test case(s), and includes the
close channel bucket in the database deletion in the .Wipe() method.
2016-06-22 16:16:43 -07:00
Olaoluwa Osuntokun
c2818a549b
channeldb: modify schema to multiple-channels-per-peer
This commit overhauls the current schema for storing active channels in
order to support tracking+updating multiple open channels for a
particular peer.

Channels are now uniquely identified by an output (txid:index) rather
than an arbitrary hash value. As a result, the funding transaction is
no longer stored, as only the txin is required to lookup the original
transaction, and to sign for new commitment states.

A new bucket, nested within the bucket for a node’s Lightning ID has
been created. This new bucket acts as an index to the active channels
for a particular peer by storing all the active channel points as keys
within the bucket. This bucket can then be scanned in a linear fashion,
or queried randomly in order to retrieve channel information.

The split between top-level, and channel-level keys remains the same.
The primary modification comes in using the channel ID (the funding
outpoint) as the key suffix for all top-level and channel-level keys.
2016-06-21 13:12:43 -07:00
Olaoluwa Osuntokun
fcff17c336
multi: change all imports to roasbeef's forks
This commit will allow the general public to build lnd without jumping
through hoops setting up their local git branches nicely with all of
our forks.
2016-05-15 17:22:37 +03:00
Tadge Dryja
71231c477c make imports lowercase 2016-04-30 20:24:57 -07:00
Olaoluwa Osuntokun
afb45ffe8b channeldb: temporary hack...
Need to add a channeldb.NewOpenChannel() method to once again allow a
channel’s db pointer to be private.
2016-03-24 00:00:22 -07:00
Olaoluwa Osuntokun
87603e780f channeldb: re-design OpenChannel schema, update tests
The state of OpenChannel on disk has now been partitioned into several
buckets+keys within the db. At the top level, a set of prefixed keys
stored common data updated frequently (with every channel update).
These fields are stored at the top level in order to facilities prefix
scans, and to avoid read/write amplification due to
serialization/deserialization with each read/write.

Within the active channel bucket, a nested bucket keyed on the node’s
ID stores the remainder of the channel.

Additionally OpenChannel now uses elkrem rather than shachain, delivery
scripts instead of addresses, stores the total net fees, and splits the
csv delay into the remote vs local node’s.

Several TODO’s have been left lingering, to be visited in the near
future.
2016-03-23 22:39:52 -07:00
Olaoluwa Osuntokun
3e3948a04f channeldb: switch to bolt.DB instead of walletdb.DB
This decouples channeldb from btcwallet, and also allows us access to
bolt’s Batch() call.
2016-03-22 18:46:30 -07:00
Tadge Dryja
2815afebb7 update imports to github 2016-01-16 10:45:54 -08:00
Olaoluwa Osuntokun
c4af4017da channeldb: revocation hashes are 20 bytes
* Although, why not 32?
2016-01-14 23:56:08 -08:00
Tadge Dryja
8504362c5e trying to store id pkh. Doesn't work; wallet creation never completes 2016-01-14 23:56:08 -08:00
Tadge Dryja
e70c6aa367 trying to store private identity key. Doesn't work. 2016-01-14 23:56:08 -08:00
Olaoluwa Osuntokun
1b9d34f614 channeldb: don't store commit sig separately, expected to be within the txin of the commit tx 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
4fdb2763e6 channeldb: create new channeldb package, update lnwallet to use new API
* Initial draft of brain dump of chandler. Nothing yet set in stone.
* Will most likely move the storage of all structs to a more “column”
oriented approach. Such that, small updates like incrementing the total
satoshi sent don’t result in the entire struct being serialized and
written.
* Some skeleton structs for other possible data we might want to store
are also included.
* Seem valuable to record as much data as possible for record keeping,
visualization, debugging, etc. Will need to set up a time+space+dirty
cache to ensure performance isn’t impacted too much.
2015-12-26 12:35:15 -06:00