Commit Graph

820 Commits

Author SHA1 Message Date
Olaoluwa Osuntokun
39c9dfb9e4
config: add a new --debughtlc config parameter
This commit adds a new configuration parameter to the deamon:
‘DebugHTLC’. When true, all outgoing HTLC’s sent via the RPC interface
will be sent paying to a special rHash value which all lnd nodes also
with the flag activated know the preimage to. Therefore all payments
sent to a 1-hop node will immediately be settled by that node.

By default, this flag is false, it it only intended to be used to
exercise local changes to 1-hop behavior manually.
2016-09-21 19:48:25 -07:00
Olaoluwa Osuntokun
0c4293ba82
lnd: extend the invoiceRegistry to wrap on-disk invoices with an in-memory cache
This commit extends the existing invoiceRegistry functionality to wrap
the on-disk invoices available via the channeldb with an in-memory
cache on invoices. Currently the in-memory cache is only reserved for
the storage of special “debug” invoices which all nodes are able to
settle immediately.
2016-09-21 19:48:22 -07:00
Olaoluwa Osuntokun
39e6217860
lnrpc: add new invoice related RPC commands 2016-09-21 19:48:18 -07:00
Olaoluwa Osuntokun
d7c4074cd6
channeldb: add ability to retrieve all invoices from the database
This commit adds a new invoice related method: FetchAllInvoices. This
method allows callers to query the state of all invoices currently
stored within the database. The method takes a toggle bit which
determines if only pending (unsettled) invoices should be returned, or
if they al should be.
2016-09-21 19:48:15 -07:00
Olaoluwa Osuntokun
fa70990452
channeldb: store the invoice counter within the invoice index bucket
This commit moves the location of the invoice counter key which is an
auto-incrementing primary key for all invoices. Rather than storing the counter
in the same top-level invoice bucket, the counter is now stored within the
invoiceIndex bucket. With this change, the top-level bucket can now cleanly be
scanned in a sequential manner to retrieve all invoices.
2016-09-21 19:48:10 -07:00
Olaoluwa Osuntokun
28b72d368c
test: use context.WithTimeout to ensure async tests don't block indefinitely
This commit uses the context package’s WithTimeout to ensure tests
which rely on asynchrony behaviors cannot block the execution of the
integration tests for ever. All tests which rely on async gRPC
notifications now perform a 3 way select: on the timeout channel
closure, an error, and the response itself.

Additionally some slight refactoring has taken place within the current
set of integration tests, eliminating some unneeded factory functions.
2016-09-21 19:45:54 -07:00
Olaoluwa Osuntokun
b264ba198f
channeldb: add persistent invoice workflow
This commit adds the necessary database functionality required for a
high-level payment invoice workflow. Invoices can be added dealing the
requirements for fulfillment, looked by payment hash, and the finally
also settled by payment hash. For record keeping and the possibility of
reconciling future disputes, invoices are currently never deleted from
disk. Instead when an invoice is settled a bit is toggled indicating as
much.

The current invoiceManger within the daemon will be modified to use
this persistent invoice store, only storing certain “debug” invoices in
memory as dictated by a command line flag.
2016-09-16 17:24:55 -07:00
Olaoluwa Osuntokun
255b1b7727
test: fix some minor typos, expand comments 2016-09-15 12:25:10 -07:00
andrew.shvv
2788dbeaa8 Add RPC to show current total available channel capacity #29 (#35)
This commit adds a new RPC command: `channelbalance` which returns the
sum of all available channel capacity across all open channels. The
total balance is currently returned in units of `satoshis`. Additionally
the `networkHarness` has been modified slightly to allow specifying the
additional "extra" command line parameters when creating the initial
seed nodes. Minor refactoring within the integration tests has been
undertaken in order to increase code re-use across tests.

Closes #29.
2016-09-15 12:00:56 -07:00
Olaoluwa Osuntokun
4c01e42670
test: add integration tests for forced channel closure
This commit adds a basic test to exercise the scenario of forced
channel closure between to nodes with an existing channel open. The
test ensures that the latest commitment transaction it broadcast to the
chain and additionally that all time-locked outputs are sweeped with a
single transaction as soon as the inputs are mature enough.
2016-09-13 19:00:57 -07:00
Olaoluwa Osuntokun
d23bf8b633
test: properly mark txid's as seen within the networkWatcher 2016-09-13 18:56:40 -07:00
Olaoluwa Osuntokun
668063f61d
test: modify the networkHarness' OpenChannel method to use global IDs
This commit modifies the OpenChannel helper method within the
networkHarness to open the channel according to the destination node’s
global lighting ID rather than using a hard coded peer ID as before.

With this change the method is now much more general as the prior
temporary hack has been removed.
2016-09-13 15:38:45 -07:00
Olaoluwa Osuntokun
c604730b7d
cmd/lncli: accept --lighting_id parameter for openchannel 2016-09-13 15:36:36 -07:00
Olaoluwa Osuntokun
6c83f53206
rpcserver: allow targeting open channels via global lightning ID
This commit adds the ability to open channels according a node’s
“global” lightning ID in addition to the local relative peer ID.
2016-09-13 15:35:48 -07:00
Olaoluwa Osuntokun
7aaa46d7ff
lnrpc: change the target_node field in OpenChannelRequest to a byte array 2016-09-13 15:34:18 -07:00
Olaoluwa Osuntokun
112ad616f6
chainntnfs: remove unnecessary print statement in tests 2016-09-13 15:33:32 -07:00
Olaoluwa Osuntokun
49ce1040d4
lnwallet: adopt simple fee structure for commitment transactions
This commit modifies the prior funding workflow to account for fees
when creating the funding output. As a stop gap, the current fee for
the commitment transaction is now hard-coded at 5k satoshis. Once the
fee models are in place this should instead be some high multiple of
the current “average” fee rate within the network, continuing, the
proper fee should be adjusted from the commitment transaction has
outputs are added/removed.
2016-09-12 19:08:01 -07:00
Olaoluwa Osuntokun
ff70b3afa9
lnd: avoid wiping a channel twice 2016-09-12 19:07:52 -07:00
Olaoluwa Osuntokun
39044cb2fa
chainntnfs: fix recursive loop, add additional logging 2016-09-12 19:07:48 -07:00
Olaoluwa Osuntokun
80b09f7d6f
lnd: properly execute force closures kicked off via RPC
This commit includes some slight refactoring to properly execute force
closures which are initiated by RPC clients.

The CloseLink method within the htlcSwitch has been extended to take an
additional parameter which indicates if the link should be closed
forcefully. If so, then the channelManager which dispatches the request
executes a force closure using the target channel state machine. Once
the closing transaction has been broadcast, the summary is sent to the
utxoNursery so the outputs can be swept once they’re mature.
2016-09-12 19:07:43 -07:00
Olaoluwa Osuntokun
bfa2a1d698
lnd: introduce the utxoNursery which incubates outputs until maturity
This commit introduces the utxoNursery. The duty of the utxoNursery is
to watch over CSV-locked immature outputs until they’ve fully matured.
An output is mature once both its sequence lock indicated by the CSV op
code within its output has become active. Once an output is mature the
nursery sweeps the outputs in batches into the source wallet.

The utxoNursery executes its duties once a commitment transaction has
been broadcast on-chain.
2016-09-12 19:07:39 -07:00
Olaoluwa Osuntokun
d0353b2864
lnwallet: add ability to trigger a force closure within channel state machine
This commit introduces the concept of a manually initiated “force”
closer within the channel state machine. A force closure is a closure
initiated by a  local subsystem which broadcasts the current commitment
state directly on-chain rather than attempting to cooperatively
negotiate a closure with the remote party.

A force closure returns a ForceCloseSummary which includes all the
details required for claiming all rightfully owned outputs within the
broadcast commitment transaction.

Additionally two new publicly exported channels are introduced, one
which is closed due a locally initiated force closure, and the other
which is closed once we detect that the remote party has executed a
unilateral closure by broadcasting their version of the commitment
transaction.
2016-09-12 19:07:35 -07:00
Olaoluwa Osuntokun
1a357755d7
cmd/lncli: observe the --force parameter in the closechannel command 2016-09-12 19:07:31 -07:00
Olaoluwa Osuntokun
a9f0caff87
lnrpc: rename AllowForceClose field in CloseChannelRequest 2016-09-12 19:07:27 -07:00
Olaoluwa Osuntokun
024deb93f3
lnwallet: modify btcwallet's SignOutputRaw method to get proper pubkey
This commit slightly modifies btcwallet’s SignOutputRaw method to work
properly in the case that the pkScript of the output being spent isn’t
one of the template pkScripts (p2pkh, multi-sig, etc). Rather than
examining the address, we now attempt to find the private key which
matches the public key passed within the sign descriptor.
2016-09-12 19:07:24 -07:00
Olaoluwa Osuntokun
f972378140
lnwallet: modify CommitSpendTimeout to expect proper input sequence num and tx version 2016-09-12 19:07:20 -07:00
Olaoluwa Osuntokun
0873c4da76
chainntnfs: add multi-client txid support for confirmation notifications
This commit adds multi-client support for confirmation notification of
the same transaction. Within the daemon there might be scenarios where
multiple goroutines are waiting for the same transaction to be
confirmed in order to properly fulfill their tasks. Previously if
multiple clients were registered for the same txid confirmation
notification, then only the client who registered last would receive
the notification.
2016-09-12 19:07:16 -07:00
Olaoluwa Osuntokun
e858bb5ca2
lnwallet: convert CommitSpendTimeout to user the Signer interface 2016-09-12 19:07:12 -07:00
Olaoluwa Osuntokun
e72c52288d
chainntfns: implement RegisterBlockEpochNtfn for BtcdNotifier, add tests 2016-09-12 19:07:08 -07:00
Olaoluwa Osuntokun
affd7793b3
lnwallet: add htlc persistence, state log restoration to channel state machine
This commit adds full persistence logic of the current lowest
un-revoked height within each commitment chain. The newly added
channeldb methods for record state transitions within both commitment
chains are now utilized. This un-settled HTLC state is now read upon
initialization, with the proper log entries inserted into the state
update log which reflect the garbage collected log right before the
restart.

A new set of tests have been added to exercise a few edge cases around
HTLC persistence to ensure the in-memory log is properly restored based
on the on-disk snapshot.
2016-09-12 19:07:04 -07:00
Olaoluwa Osuntokun
e60778a867
channeldb: split RecordChannelDelta into two distinct methods
This commit splits the previously added RecordChannelDelta method into
two distinct methods: UpdateCommitment and AppendToRevocationLog. The
former method is to be used once the local party revokes their current
commitment, and the latter method to be used once the remote party
revokes their current commitment.

With the addition of the UpdateCommitment method, the active HTLC’s
from the local node’s point of view are now persisted to disk.
Snapshots returned by the channel now also includes the current set of
active HTLC’s. In order to maintain thread safety the channels mutex is
now grabbed within methods which modify/read state but don’t do so
solely via a boltDB transaction.

The tests have been updated to account for the storage of HTLC’s needed
in order to assert proper behavior.
2016-09-12 19:07:00 -07:00
Olaoluwa Osuntokun
2235785ed8
channeldb: add some missing nil checks 2016-09-12 19:06:57 -07:00
Olaoluwa Osuntokun
e83a6a0f6c
channeldb: remove revocation keys from channel deltas
This commit removes the revocation hash/keys from the channel deltas.
In the case of an uncooperative closure, we can efficiently re-generate
the proper elkrem pre-image so this storage was completely unnecessary
2016-09-12 19:06:52 -07:00
Olaoluwa Osuntokun
c1b98da530
channeldb: also pass in current tx and sig into RecordChannelDelta 2016-09-12 19:06:49 -07:00
Olaoluwa Osuntokun
6684f6aedf
channeldb: implement commitment state update log
This commit implements a state update log which is intended the record
the relevant information for each state transition on disk. For each
state transition a delta should be written recording the new state. A
new method is also provided which is able to retrieve a previous
channel state based on a state update #.

At the moment no measures has been taken to optimize the space
utilization of each update on disk. There are several low-hanging
fruits which can be addressed at a later point. Ultimately the update
log itself should be implemented with an append-only flat file at the
storage level. In any case, the high level abstraction should be able
to maintained independent of differences in the on-disk format itself.
2016-09-12 19:06:44 -07:00
Olaoluwa Osuntokun
d2acb4336c
test: add method to dump logs of a node within the networkHarness
At times when testing one requires access to the logs of a particular
node in order to aide with debugging. Before this commit, one needed to
manually modify the networkHarness code in order to print either the
location of the logs or the logs themselves. With this commit, tests
can now programmatically examine the logs of any node created within
the networkHarness.

It’s worth noting that at times the logs dumped may not be the most up
to date version of the logs files as the logging library employs
intermediate buffering.
2016-09-10 13:14:33 -07:00
Olaoluwa Osuntokun
e536e1afb1
lnwallet: eliminate flaky assert within integration tests
This commit removes a flaky assertion within the interaction tests. Due
to differences in final coin selection across tests due to the
pseudo-random nature of map iterations, a single output might be
selected rather than two as we previously expected.

Additionally a duplicate test has been removed, and the locked output tests
simplified a bit.
2016-09-08 13:10:51 -07:00
Olaoluwa Osuntokun
dfe37cd699 Merge pull request #17 from lightningnetwork/wallet-interface-refactor
Refactor the lnwallet package to directly use the WalletController interface
2016-09-08 14:35:35 -05:00
Olaoluwa Osuntokun
bccb1b9203
rpc: ensure wallet balances are returned in units of BTC 2016-09-08 12:26:16 -07:00
Olaoluwa Osuntokun
0d871dabb3
lnd: modify the daemon's initialization to use new wallet API's 2016-09-08 12:26:07 -07:00
Olaoluwa Osuntokun
abf658a719
lnd: modify the rpcServer's methods to use the new wallet API's 2016-09-08 12:26:03 -07:00
Olaoluwa Osuntokun
a28cf3fdf8
lnd: obtain the identity key via the wallet's GetIdentityKey method 2016-09-08 12:25:58 -07:00
Olaoluwa Osuntokun
671098325d
lnwallet: refactor all wallet/channel interaction to use the WalletController.
This commit performs a major refactor of the current wallet,
reservation, and channel code in order to call into a WalletController
implementation rather than directly into btcwallet.

The current set of wallets tests have been modified in order to test
against *all* registered WalletController implementations rather than
only btcwallet. As a result, all future WalletControllers primary need
to ensure that their implementation passes the current set of tests
(which will be expanded into the future), providing an easy path of
integration assurance.

Rather than directly holding the private keys throughout funding and
channel creation, the burden of securing keys has been shifted to the
specified WalletController and Signer interfaces. All signing is done
via the Signer interface rather than directly, increasing flexibility
dramatically.

During channel funding, rather than creating a txscript.Engine to
verify commitment signatures, regular ECDSA sig verification is now
used instead. This is faster and more efficient.

Finally certain fields/methods within ChannelReservation and
LightningChannel have been exposed publicly in order to restrict the
amount of modifications the prior tests needed to undergo in order to
support testing directly agains the WalletController interface.
2016-09-08 12:25:54 -07:00
Olaoluwa Osuntokun
99fdb3a3a9
lnwallet: modify elkrem root derivation, derive from root HD seed
This commit modifies the elkrem root derivation for each newly created
channel. First a master elkrem root is derived from the rood HD seed
generated from private wallet data. Next, a HKDF is used with the
secret being the master elkrem root.
2016-09-08 12:25:49 -07:00
Olaoluwa Osuntokun
564316a846
lnwallet: publicly export several functions within script_utils.go 2016-09-08 12:25:44 -07:00
Olaoluwa Osuntokun
044b65317a
lnwallet: remove setup.go
This file is no longer needed as each implementation of the
WalletController is expected to handle its own set up via an instance
of the WalletDriver factory struct.
2016-09-08 12:25:40 -07:00
Olaoluwa Osuntokun
773c831561
lnwallet: replace naive coin selection a size+fee aware version 2016-09-08 12:25:36 -07:00
Olaoluwa Osuntokun
6a1d8d0682
lnwallet: add a BtcWallet implementation of WalletController
This commit adds the first concrete implementation of the
WalletController interface: BtcWallet. This implementation is simply a
series of wrapper functions are the base btcwallet struct.

Additionally, for ease of use both the BlockChain IO and Signer
interface are also implemented by BtcWallet. Finally a new WalletDriver
implementation has been implemented, and will be register by the init()
method within this new package.
2016-09-08 12:25:32 -07:00
Olaoluwa Osuntokun
5449ba2b34
lnwallet: revamp interfaces, add BlockChainIO and Singer
This commit revamps the previous WalletController interface, edging it
closer to a more complete version.

Additionally, this commit also introduces two new interfaces:
BlockchainIO, and Singer along with a new factor driver struct, the
WalletDriver.

This BlockChainIO abstracts read-only access to the blockchain, while
the Singer interface abstracts the signing of inputs from the base
wallet paving the way to hardware wallets, air-gapped signing, etc.

Finally, in order to provide an easy method for selecting a particular
concrete implementation of a WalletController interface, the concept of
registering “WalletDriver”s has been introduced. A wallet driver is
essentially the encapsulation of a factory function capable of create a
new instance of a Wallet Controller.
2016-09-08 12:25:28 -07:00
Olaoluwa Osuntokun
a87ddeabdc
lnwallet: remove interaction with the btcutil.coinset package
This commit removes the wrapper functions used to rely on the coinset
package for coin selection. In a future commit the prior behavior will
be replaced by a custom coin selection implementation which estimates
the size of the funding transaction.
2016-09-08 12:25:24 -07:00