Commit Graph

226 Commits

Author SHA1 Message Date
Conner Fromknecht
926949ef0f
channeldb/db: adds FetchClosedChannel
This commit adds a FetchClosedChannel method to the
channeldb, which allows querying based on a known
channel point. This will be used in the nursery to
load channel close summaries, which can be used to
provide more accurate height hints when recovering
from failures.
2018-01-24 15:38:50 -08:00
Olaoluwa Osuntokun
ebb4c84b32
channeldb: add new LatestCommitments and RemoteRevocationStore methods
These methods will allow the chainWatcher to ensure it has the latest
channel state before attempting to construct any resolution objects.
2018-01-22 19:19:51 -08:00
Olaoluwa Osuntokun
850ff1d970
channeldb: add new WitnessCache structure
In this commit, we add the WitnessCache sub-storage system of the
greater database. The WitnessCache is a persistent cache of all
witnesses we’ve encountered on the network. We’ll use this cache to
share any on-chain discoveries between active channels. Eventually
we’ll also use this to enforce the variant that a preimage is only to
be used ONCE on the network.
2018-01-22 19:19:37 -08:00
Olaoluwa Osuntokun
b4fc34a93a
channeldb: add ShortChanID to close channel summary 2018-01-22 19:19:35 -08:00
Olaoluwa Osuntokun
5d7119fe9c
channeldb: expose methods to serialize HTLC's on-disk
These new methods will be used by the contract court package to
properly serialize the state of HTLC’s that have yet to be fully
resolved on-chain.
2018-01-22 19:19:35 -08:00
Conner Fromknecht
95b788e9a6
channeldb/db: exposes Path method, useful for testing 2018-01-05 13:47:17 -08:00
Conner Fromknecht
1d69526874
channeldb/channel: adds IsBorked to OpenChannel 2018-01-05 13:47:17 -08:00
Matt Drollette
adf0d98194 multi: fix several typos in godoc comments 2017-12-17 18:40:05 -08:00
Johan T. Halseth
48e22219c0 channeldb: add ChannelFlags to OpenChannel struct
This commit adds the ChannelFlags field, of type
lnwire.FundingFlags, to the OpenChannel struct,
including serialization for database storage.
This is done to preserve the flags that were
sent during channel opening, currently used
to determine whether a channel should be made
public or not after opening.
2017-12-17 18:35:34 -08:00
Micah Lerner
cf6f313cff channeldb: update channeldb to set and store SettleDate for invoices 2017-12-08 16:50:04 -08:00
Micah Lerner
1295bfe096 channeldb: fix channel_test scoping error 2017-12-03 16:34:52 -08:00
Olaoluwa Osuntokun
9b53d7bd95
channeldb: treat Flags field in ChannelEdgePolicy as a bitfield 2017-11-30 22:41:54 -08:00
Olaoluwa Osuntokun
12e5951434
channeldb: extend ChannelConfig with new HtlcBasePoint key 2017-11-16 20:00:01 -08:00
Olaoluwa Osuntokun
6f51b941df
multi: fix linter errors 2017-11-10 19:51:13 -08:00
Olaoluwa Osuntokun
1fb05e0436
channeldb: properly craft key for reading/writing channel commitments
In this commit, we fix an existing bug that arose due to incorrectly
crafting the key we use to store channel commitments. Before this
commit, we tried to copy to a slice that hadn’t been allocated yet. As
a result, the key would only have the 0x00 or 0x01 as its value. We fix
this by properly crafting the key using the built-in append function.
2017-11-10 19:51:12 -08:00
Olaoluwa Osuntokun
699e5327e1
channeldb: don't delete the chainHash bucket in CloseChannel
In this commit, we fix an existing bug wherein if we closed two
channels, then we were unable to read the channel state afterwards as
we deleted the enclosing bucket.
2017-11-10 19:51:12 -08:00
Olaoluwa Osuntokun
3875754e0f
channeldb: also update chanInfo when updating commitment
In this commit, we fix an existing bug wherein we failed to update the
channels state once we accepted a new commitment. As a result, after a
state transition, if the channel state was read from disk, values like
TotalMSatSent wouldn’t be properly updated.
2017-11-10 19:51:11 -08:00
Olaoluwa Osuntokun
1d6e5ad1ef
channeldb: add missing mutex interaction to new methods 2017-11-10 19:51:11 -08:00
Olaoluwa Osuntokun
29f2f88abc
channeldb: expand TestChannelStateTransition to expertise new state transition related methods
In this commit we’ve extended the TestChannelStateTransition method to
exercise the new state transition related messages. This includes
ensuring that when we add a new dangling commitment, and then the
remote party revokes it, then the on-disk state is update accordingly.
2017-11-10 19:50:50 -08:00
Olaoluwa Osuntokun
06e6649da5
channeldb: update channel closing methods to respect new on-disk structure 2017-11-10 19:50:50 -08:00
Olaoluwa Osuntokun
385818307b
channeldb: update FetchOpenChannel to traverse new chain bucket 2017-11-10 19:50:49 -08:00
Olaoluwa Osuntokun
da7a5f7c4e
channeldb: update tests to respect new API's 2017-11-10 19:50:49 -08:00
Olaoluwa Osuntokun
0178920cba
channeldb: update CloseChannel to adhere to new disk structure
In this commit, we update the CloseChannel method to respect the new
on-disk bucket based structure. Additionally, we now ensure that we
delete the new chainBucket.
2017-11-10 19:50:48 -08:00
Olaoluwa Osuntokun
3cf4ac8237
channeldb: add a new ChainHash field to ChannelCloseSummary 2017-11-10 19:50:48 -08:00
Olaoluwa Osuntokun
da22078995
channeldb: modify FindPreviousState to return a ChannelCommitment 2017-11-10 19:50:47 -08:00
Olaoluwa Osuntokun
5bdff9585b
channeldb: modify RevocationLogTail to return a ChannelCommitment 2017-11-10 19:50:47 -08:00
Olaoluwa Osuntokun
374cab7467
channeldb: rename AppendToRevocationLog to AdvanceCommitChainTail
In this commit, in addition to the renaming we’ve modified the behavior
of AdvanceCommitChainTail as follows: this method now will simply
atomically advance the commitment tail, set the new commitment to the
prior dangling commitment, and update the on-disk revocation log.

The macho expects the new revocation state to already be stored within
the channel. This method is to be called once the remote party revokes
their current commitment state.
2017-11-10 19:50:47 -08:00
Olaoluwa Osuntokun
b89c14616c
channeldb: add new RemoteCommitChainTip method
In this commit, we add a new method: RemoteCommitChainTip. This method
allows callers to poll the database state to check if we have an
un-acked commitment for the remote party. If so, then it should be
retransmitted once a communication channel has been re-established with
the channel peer. This method will return ErrNoPendingCommit if we
don’t currently have a dangling commitment.
2017-11-10 19:50:46 -08:00
Olaoluwa Osuntokun
893cda3ac2
channeldb: add new AppendRemoteCommitChain method
In this commit, we add a new method AppendRemoteCommitChain. This
method is meant to be used once we extend a new state to the remote
party, but before we actually transmit the CommitSig message. With this
method, we store a fully valid CommitDiff on disk which can be used in
the case that we need to retransmit the state to the party as they
didn’t fully receive it.
2017-11-10 19:50:46 -08:00
Olaoluwa Osuntokun
10a54a45fd
channeldb: expand the CommitDiff struct with the addition of LogUpdate
In this commit we finalized the structure of the CommitDiff struct by
adding a set of LogUpdates, and also a valid CommitSig message.

The LogUpdate struct houses a messages that were transmitted and
locked-in with the new commitment state. We include the LogIndex along
with the wire messages itself in order to be able to properly
reconstruct the update log upon restart.

The CommitSig message included should be transmitted after the set of
LogUpdates, and fully covers the new commitment state and any new (or
already present) HTLC’s that were included as part of the state.
2017-11-10 19:50:45 -08:00
Olaoluwa Osuntokun
3e3969eb66
channeldb: modify UpdateCommitment to accept a ChannelCommitment
In this commit, we modify the UpdateCommitment method to accept a full
ChannelCommitment rather than a new transaction, the sig, and a
ChannelDelta. This new structure of this method also takes advantage of
the new bucket structure of the storage schema. Additionally, this
method will now atomically swap in the new passed commitment to point
to the LocalCommitment value within the struct.
2017-11-10 19:50:45 -08:00
Olaoluwa Osuntokun
2dcd82e779
channeldb: add new MarkAsOpen method to OpenChannel struct
In this commit we add a new MarkAsOpen method to the OpenChannel
struct. This method replaces the existing MarkChannelAsOpen method
which targeted the database struct itself.
2017-11-10 19:50:44 -08:00
Olaoluwa Osuntokun
4ae0b008ed
channeldb: modify storage of OpenChannel struct to use new codec.go
In this commit we comptely overhaul the existing storage of the
OpenChannel struct to use the new common serialization defined within
the codec.go file. Additionally, we’ve modified the structure of the
channel database on disk. Rather then use the existing prefix based
segmentation, everything is now bucket based. This has resulted in much
simpler and easier to follow code. The bucket progression is:
openChannelBucket -> nodeBucket -> chainBucket -> channelBucket. We add
a chainBucket as it’s possible that in the future we may have several
channels on distinct chains with a given node.

With the above changes, we’re able to delete much of the existing code
within the file, drastically reducing its size.
2017-11-10 19:50:44 -08:00
Olaoluwa Osuntokun
040c6bdf22
channeldb: add new HtlcIndex and LogIndex fields to the HTLC struct
By adding these two fields, it is now possible to fully reconstruct the
channel’s update log from the set of HTLC’s stored on disk, as we now
properly note both the log index and HTLC index. Prior to this commit
we would simply start the new log index based on the amount of HTLC’s
that were present in the prior state.
2017-11-10 19:50:43 -08:00
Olaoluwa Osuntokun
fb8ff256d8
channeldb: restructure the OpenChannel struct to use two ChannelCommitments
In this commit, we restructure the OpenChannel struct to used two
distinct ChannelCommitments: one for the remote party, and one for the
local party. With this, we now partition the local state and the remote
state. Previously, we weren’t properly tracking the state of the remote
party. As a result, there were certain classes of failures we were
unable to properly recover from. With this separation, we can now
handle them, and the OpenChannel struct is slimmer and more
understandable.
2017-11-10 19:50:43 -08:00
Olaoluwa Osuntokun
4bc317fbbe
channeldb: add new ChannelCommitment struct
In this commit we’ve added a new struct to the package:
ChannelCommitment. This sturct houses all the common data the comprises
a particular commitment state. This will soon replace the open fielded
commitmetn fields within the OpenChannel struct.
2017-11-10 19:50:35 -08:00
Olaoluwa Osuntokun
e3cdbcac0c
channeldb: add new codec.go file which houses common serialization funcs
In this commit, we add a new files to the channeldb package: codec.go.
This file is similar to the way that serialization is done within the
lnwire package. The goal of this file is to reduce all the duplication
within the common serialization methods across the package.
2017-11-09 19:44:37 -08:00
Andrey Samokhvalov
9247168c5d not finished index persistence 2017-11-09 16:38:58 -08:00
Andrey Samokhvalov
28dd6e5d84 channeldb+lnwallet: add remote pending commiment persistance 2017-11-09 16:38:58 -08:00
Andrey Samokhvalov
7aa7cb1caf channeldb: add persistance of the onion blob
In this commit htlc channeldb representation have been augmented
with onion blob field, and (de)serialisaion functions have been changed
to make the onion blob persistant.
2017-11-09 16:38:58 -08:00
Johan T. Halseth
b26560e0f4
channeldb: add DisconnectBlockAtHeight
This commit adds the method DisconnectBlockAtHeight to the channel
graph database, making it possible to "rewind" the database in case
a block is disconnected from the main chain. To accomplish this,
a prune log is introduced, making it possible to keep track of the
point in time where the database was pruned. This is necessary for
the case where lnd might wake up on a stale branch, and must "walk
backwards" on this branch after it finds a common block fro the
graph database and the new main chain.
2017-11-03 00:05:19 +01:00
Jim Posen
a13ad0a339 multi: Fix various typos. 2017-10-25 13:20:54 -07:00
Jim Posen
9fd77a6e40 multi: Update lnd to use new feature vector API. 2017-10-17 22:47:20 -07:00
Olaoluwa Osuntokun
5eb3406b19
channeldb: add new Database method to ChannelGraph 2017-10-10 22:19:26 -07:00
Olaoluwa Osuntokun
81cd954cfc
discovery: don't prune *our* channels during retransmission tick
This commit modifies the recently modified logic for self-channel
retransmission to exclude pruning *our* channels which haven’t been
updated since the broadcastInterval. Instead, we only re-broadcast
channels of ours that haven’t been updated in 24 hours.
2017-10-04 20:46:08 -07:00
Laura Cressman
6253419ce5 channeldb: use binary.Read/Write in waitingproof.go
Use binary.Read/Write when reading and writing booleans
in Encode and Decode functions that operate on the
WaitingProof struct.
2017-10-02 23:13:47 -07:00
Laura Cressman
3f6a58f967 channeldb: use binary.Read/Write in invoices.go
Use binary.Read/Write in when reading and writing
booleans in functions to serialize and deserialize
invoices.
2017-10-02 23:13:47 -07:00
Laura Cressman
156772d04a channeldb: use binary.Read/Write with bools in channel.go
Use binary.Read/Write in functions to serialize and deserialize
channel close summary and HTLC boolean data, as well as in
methods to put and fetch channel funding info. Remove lnd
implementations of readBool and writeBool as they are no
longer needed. Also fix a few minor typos.
2017-10-02 23:13:47 -07:00
Johan T. Halseth
5ed31b1030
channeldb: store payment request with invoices 2017-09-27 12:26:04 +02:00
Olaoluwa Osuntokun
5ff82c92da
channeldb: add commitment transaction fee to ChannelSnapshot 2017-09-24 20:09:28 -07:00