Commit Graph

826 Commits

Author SHA1 Message Date
carla
80451afe48
routing/test: add test to demonstrate stuck payment, single shard
This commit adds a test which demonstrates that payments can
get stuck if we receive a payment failure while we're pathfinding
for another shard, then try to dispatch a shard after we've
recorded a permanent failure. It also updates our mock to
only consider payments with no in-flight htlcs as in-flight,
to more closely represent our actual RegisterAttempt.
2021-04-23 08:39:44 +02:00
carla
125980afb7
routing/test: block on pathfinding in tests
This commit adds a step to our payment lifecycle test to add
control over when we find a path for our payment, This is
required for testing race conditions around pathfinding
completing and payment failures being reported.
2021-04-23 08:39:43 +02:00
carla
a68155545c
routing/test: use half shard for single success case
Update our single shard success case to use a route which
splits the payment amount in half. This change still tests
the case where reveal of the preimage counts as a success,
even if we don't have the full amount. This change is made
to cut down on potential races in this test case. While we
are waiting for collectResultAsync to report a success, the
payment lifecycle will continue trying to dispatch shards.
In the case where we send 1/4 of the payment amount, we
send 1 or 2 more shards, depending on how long collectAsync
takes. Reducing this test to send 1/2 of the payment amount
means that we will always only try one more shard before
waiting for our shard.
2021-04-23 08:39:42 +02:00
carla
198d567cb2
routing/test: assert error value for payment failures 2021-04-23 08:39:41 +02:00
carla
e0c52e4473
routing/test: close payment result channel on shutdown, mimicking switch
This commit updates our mock to more closely follow the behavior of the
switch for mocked calls to GetPaymentResult. As it stands, our tests
send a test-created error from the switch when we want to mock shutdown.
In reality, the switch will close its result channel, so we update this
test to follow that behavior. This matters for the commit that follows,
because we start checking the error our payments return. If we have an
error from the switch, our tests will fail with an error that we do
not encounter in practice.
2021-04-23 08:39:40 +02:00
carla
9a78e9da73
routing/tests: move lock acquisition after state driving channels
In our payment lifecycle tests, we have two goroutines that
compete for the lock in our mock control tower: the resumePayment
loop which tries to call RegisterAttempt, and the collectResult
handler which is launched in a goroutine by collectResultAsync
and is responsible for various settle/fail calls.

The order that the lock is acquired by these goroutines is
arbitrary, and can lead to flakes in our tests if the step
that we do not intend to execute first gets the lock (eg,
we want to fail a payment in collectResult, but RegisterAttempt
gets there first). This commit moves contention for this lock
after our mock's various "state driving" channels, so that the
lock will be acquired in the order that the test intends it.
2021-04-23 08:39:39 +02:00
carla
b2d941ebfb
routing/test: remove test channel buffers
Now that we run each test individually, we don't need to buffer
our mock's channels anymore. This helps to tighten our test loop,
which currently can move on from a step before it's actually
been processed by the mock. This removal ensures that our payment
loop processes each of the test's steps before moving on to the
next once.
2021-04-23 08:39:38 +02:00
carla
806c4cbd57
routing/test: run each test case individually, add names
Update our payment lifecycle test to run each test case with
a fresh router. This prevents test cases from interacting with
each other. Names are also added for easy debugging.
2021-04-23 08:39:37 +02:00
carla
cb927e89b0
routing/test: add check that sendpayment completes
As is, we don't check that our SendPayment call in
TestRouterPaymentStateMachine completes. This makes it easier
to create malformed tests that just run through steps but leave
the SendPayment call hanging. This commit adds a check that we
have completed our payment to help catch tests like this. We
also remove an unused quit channel.
2021-04-23 08:39:36 +02:00
Olaoluwa Osuntokun
7b589e5811
routing: add strict zombie pruning as a config level param
In this commit, we add strict zombie pruning as a config level param.
This allow us to add the option for those that want a tighter graph, and
not change the default composition of the channel graph for most users
over night.

In addition, we expand the test case slightly by testing that the self
node won't be pruned, but also that if there's a node with only a single
known stale edge, then both variants will prune that edge.
2021-04-21 13:56:27 -05:00
Olaoluwa Osuntokun
916059da48
routing: update chan pruning test w/ new zombie logic 2021-04-21 13:56:24 -05:00
Conner Fromknecht
e3a8b3b0c4
routing/router: prune zombies when either end is stale 2021-04-21 13:56:21 -05:00
yyforyongyu
37aa49c7aa
routing: fix pathfind edge features being nil 2021-04-13 15:53:18 +08:00
Wilmer Paulino
82fe5d9bba
build: update btcwallet dependency introducing pruned bitcoind support
This is achieved by some recent work within the BitcoindClient enabling
it to retrieve pruned blocks from its server's peers.
2021-04-06 14:55:14 -07:00
Olaoluwa Osuntokun
ca96e66b43
Merge pull request #5116 from joostjager/mc-deadlock
routing: fix mission control deadlock
2021-04-05 20:02:57 -07:00
Wilmer Paulino
a620ce3682
build: update btcd and btcwallet dependencies 2021-04-05 15:41:04 -07:00
Olaoluwa Osuntokun
a329c80612
Merge pull request #5133 from wpaulino/routing-validation-cancel-deps
discovery+routing: cancel dependent jobs if parent validation fails
2021-04-01 18:32:58 -07:00
Johan T. Halseth
1231c90a19
routing: avoid open DB transaction if no zombies to prune
We add a simple length check to the channels to be pruned to avoid
opening the DB if there is nothing to be done.
2021-03-30 11:04:13 +02:00
Johan T. Halseth
a0f3624303
routing: delay initial zombie prune by 30 sec
Since zombie pruning can be very slow on some devices (e.g. mobile) it
would stall lnd startup. Since it is not essential for pruning to be
finished for lnd to be functional, we instead delay the initial prune by
30 seconds.

Note that we could also wait for the graphPruneInterval to tick, but
since this is by default 2 hours, it is unlikely that a mobile app will
ever be open that long.
2021-03-30 11:04:13 +02:00
Wilmer Paulino
393111cea9
discovery+routing: cancel dependent jobs if parent validation fails
Previously, we would always allow dependent jobs to be processed,
regardless of the result of its parent job's validation. This isn't
correct, as a parent job contains actions necessary to successfully
process a dependent job. A prime example of this can be found within the
AuthenticatedGossiper, where an incoming channel announcement and update
are both processed, but if the channel announcement job fails to
complete, then the gossiper is unable to properly validate the update.
This commit aims to address this by preventing the dependent jobs to
run.
2021-03-23 11:56:51 -07:00
carla
22491ad567
routing: add mission control import functionality 2021-03-18 10:46:45 +02:00
Joost Jager
56238ebc60 routing: remove unnecessary lock in mission control init
The init code is part of the instantiation, so there is no need for
locking yet.
2021-03-17 12:06:12 +01:00
Joost Jager
89751f869f routing: fix mission control deadlock
This commit fixes the following potential deadlock situation:
* Pathfinding holds a database lock and tries to obtain a mission control lock
via GetProbability
* ReportPaymentSuccess/ReportPaymentFail holds a mission control lock
and tries to obtain a database lock to store the payment result.
2021-03-17 12:03:32 +01:00
yyforyongyu
541fbbb054
routing: check payment.DestFeatures against nil 2021-03-17 00:14:20 +08:00
Conner Fromknecht
250bc8560e
routing: avoid modifying AssumeChannelValid in unit tests
This produces a race condition when reading AssumeChannelValid from a
different goroutine. Instead we isolate the test cases and initial
AssumeChannelValid properly.
2021-02-17 22:43:24 -08:00
Conner Fromknecht
f7c5236bf6
routing: dial back max concurrent block fetches
This commit reduces the number of concurrent validation operations the
router will perform when fully validating the channel graph. Reports
from several users indicate that GetInfo would hang for several minutes,
which is believed to be caused by attempting to validate massive amounts
of channels in parallel. This commit returns the limit back to its
original state before adding the batched gossip improvements.

We keep the 1000 concurrent validation request limit for
AssumeChannelValid, since we don't fetch blocks in that case. This
allows us to still keep the performance benefits on mobile/low-resource
devices.
2021-02-17 18:17:09 -08:00
Olaoluwa Osuntokun
b73a6e2c61
routing: if MaxShardAmt is set, then use that as a ceiling for our splits
In this commit, we thread through the necessary state to allow users to
set a max shard amount. If this value is set, then this'll effectively
serve as a ceiling for all our split attempts. If we need to split,
we'll first try to use `paymentAmt/2`, if that's bigger than
`MaxShardAmt, then we'll use the latter instead.

Ideally in the future we have a dynamic way to automatically set both
the `MaxShardAmt` as well as `MaxParts` for users. Until then exposing
these two new fields will allow us to experiment with setting them
automatically using the RPC interface, and also give users a bit more
control over how we attempt to route payments, akin to coin control for
on-chain payments.

Fixes #4730
2021-02-15 19:31:52 -08:00
Olaoluwa Osuntokun
7398e59927
lnrpc/routerrpc+routing: add new MaxShardAmt field to LightningPayment 2021-02-15 19:31:49 -08:00
Olaoluwa Osuntokun
7b0ea3c029
Merge pull request #4909 from carlaKC/mc-paramsapi
routing: allow runtime updates to mission control config
2021-02-10 18:51:53 -08:00
Johan T. Halseth
7e34132c53
routing: let graph methods take scheduler option 2021-02-10 23:54:03 +01:00
Olaoluwa Osuntokun
107f19a049
routing: add new TestPaymentAddrOnlyNoSplit test case
This test case ensures that we won't try to split payment if the dest
has the payment addr bit, but NOT the mpp optional/require bit.
2021-02-03 17:53:40 -08:00
Olaoluwa Osuntokun
27c1779757
routing: allow custom dest feature bits in integratedRoutingContext.testPayment
This is a preparatory commit for a new test to ensure that if a node
only has the TLV and payment addr feature bits, we don't try to split a
payment.
2021-02-03 17:53:32 -08:00
Olaoluwa Osuntokun
301f1a870e
Merge pull request #4924 from champo/check_payreq_multipart
routerrpc,routing: limit max parts if the invoice doesn't declare MPP support
2021-02-03 16:53:49 -08:00
Oliver Gugger
02267565fe
multi: unify code blocks in READMEs 2021-01-22 09:14:11 +01:00
carla
64dad77e2e
multi: add get and set mission control to routerrpc 2021-01-19 10:57:15 +02:00
carla
edac5bb868
routing: add getter and setter for mission control config 2021-01-19 10:57:14 +02:00
carla
e10e8f11de
routing: extract probability estimator cfg and add validation
In preparation for allowing live update of mc config, we extract our
probability estimator cfg for easy update and add validation.
2021-01-19 10:57:13 +02:00
carla
7b24b586a0
routing: move locking for ReportPaymentSuccess and ReportPaymentFailure
All of the other mission control exported functions acquire their locks
immediately, and do not lock in the subsequent unexported functions.
This commit moves the lock up for the report payment functions so that
mission control's config values are covered by this lock, in preparation
for allowing config to be updated at runtime. Moving this lock means
that we will hold the lock for the additional time it takes to store a
single result, AddResult, to the store.
2021-01-19 10:57:12 +02:00
carla
97442da8f7
routing: add string method for cfg 2021-01-19 10:57:11 +02:00
carla
0735d359b9
router: move self node out of config
We are going to use the config struct to allow getting and setting
of the mission control config in the commits that follow. Self node
is not something we want to change, so we move it out for better
separation.
2021-01-19 10:57:10 +02:00
Juan Pablo Civile
f574c150aa routing: limit max parts if the invoice doesn't declare MPP support 2021-01-15 14:56:32 -03:00
András Bánki-Horváth
669663bfc2
Merge pull request #4822 from bhandras/add_globalfeatures
routing: add missing features to NetworkNodeUpdate (and also depreacte GlobalFeatures)
2020-12-08 10:16:50 +01:00
Yong
582b164c46
kvdb: add timeout options for bbolt (#4787)
* mod: bump btcwallet version to accept db timeout

* btcwallet: add DBTimeOut in config

* kvdb: add database timeout option for bbolt

This commit adds a DBTimeout option in bbolt config. The relevant
functions walletdb.Open/Create are updated to use this config. In
addition, the bolt compacter also applies the new timeout option.

* channeldb: add DBTimeout in db options

This commit adds the DBTimeout option for channeldb. A new unit
test file is created to test the default options. In addition,
the params used in kvdb.Create inside channeldb_test is updated
with a DefaultDBTimeout value.

* contractcourt+routing: use DBTimeout in kvdb

This commit touches multiple test files in contractcourt and routing.
The call of function kvdb.Create and kvdb.Open are now updated with
the new param DBTimeout, using the default value kvdb.DefaultDBTimeout.

* lncfg: add DBTimeout option in db config

The DBTimeout option is added to db config. A new unit test is
added to check the default DB config is created as expected.

* migration: add DBTimeout param in kvdb.Create/kvdb.Open

* keychain: update tests to use DBTimeout param

* htlcswitch+chainreg: add DBTimeout option

* macaroons: support DBTimeout config in creation

This commit adds the DBTimeout during the creation of macaroons.db.
The usage of kvdb.Create and kvdb.Open in its tests are updated with
a timeout value using kvdb.DefaultDBTimeout.

* walletunlocker: add dbTimeout option in UnlockerService

This commit adds a new param, dbTimeout, during the creation of
UnlockerService. This param is then passed to wallet.NewLoader
inside various service calls, specifying a timeout value to be
used when opening the bbolt. In addition, the macaroonService
is also called with this dbTimeout param.

* watchtower/wtdb: add dbTimeout param during creation

This commit adds the dbTimeout param for the creation of both
watchtower.db and wtclient.db.

* multi: add db timeout param for walletdb.Create

This commit adds the db timeout param for the function call
walletdb.Create. It touches only the test files found in chainntnfs,
lnwallet, and routing.

* lnd: pass DBTimeout config to relevant services

This commit enables lnd to pass the DBTimeout config to the following
services/config/functions,
  - chainControlConfig
  - walletunlocker
  - wallet.NewLoader
  - macaroons
  - watchtower
In addition, the usage of wallet.Create is updated too.

* sample-config: add dbtimeout option
2020-12-07 15:31:49 -08:00
Andras Banki-Horvath
98c61be342
routing: add missing GlobalFeatures to NetworkNodeUpdate 2020-12-07 15:47:09 +01:00
Oliver Gugger
2edc3cf98f
multi: update to latest btcd version
With this commit we update btcd to the latest version which allows us to
specify the btcd binary we want to use when spinning up a new node.
2020-12-03 11:30:22 +01:00
Olaoluwa Osuntokun
7e298f1434
Merge pull request #3367 from cfromknecht/batched-graph-updates
Batched graph updates
2020-11-25 18:40:40 -08:00
Olaoluwa Osuntokun
d996607470
routing+lnrpc: extend BuildRoute to accept raw payAddr
In this commit, we extend the `BuildRoute` method and RPC on the router
sub-server to accept a raw payment address which will be included as
part of an MPP payload for the finla hop. This change actually also
allows users to craft their own MPP paths using BuildRoute+SendToRoute.
Our primary goal however, was to fix some broken itests since we now
require the payAddr to be present for ALL payments other than key send
payments.
2020-11-25 16:32:02 -08:00
Conner Fromknecht
e8c545e909
routing/router: increase validation barrier size to 1000
This allows for a 1000 different persistent operations to proceed
concurrently. Now that we are batching operations at the db level, the
average number of outstanding requests will be higher since the commit
latency has increased. To compensate, we allow for more outstanding
requests to keep the router busy while batches are constructed.
2020-11-24 16:40:10 -08:00
Johan T. Halseth
df049ad755
routing: promote shard logs on resume and terminal failure to Info 2020-11-24 14:59:39 +01:00
Johan T. Halseth
f8493a7522
routing: define errShardHandlerExiting 2020-11-24 14:59:39 +01:00
Andras Banki-Horvath
d89f51d1d0
multi: add reset closure to kvdb.Update
Similarly as with kvdb.View this commits adds a reset closure to the
kvdb.Update call in order to be able to reset external state if the
underlying db backend needs to retry the transaction.
2020-11-05 17:57:12 +01:00
Andras Banki-Horvath
2a358327f4
multi: add reset closure to kvdb.View
This commit adds a reset() closure to the kvdb.View function which will
be called before each retry (including the first) of the view
transaction. The reset() closure can be used to reset external state
(eg slices or maps) where the view closure puts intermediate results.
2020-11-05 17:57:12 +01:00
carla
c92b030652
multi: remove experimential build flag for assumechanvalid 2020-10-21 14:13:50 +02:00
Johan T. Halseth
90a59fe70f
router: call CleanStore on startup 2020-10-06 10:46:04 +02:00
Johan T. Halseth
d1a118388d
payment_control: remove unused Attempts field 2020-10-06 10:41:25 +02:00
Joost Jager
bbfeeec8b1
routing: add proportional attempt cost 2020-09-08 15:47:08 +02:00
Joost Jager
60a22ff09d
routing/test: parametrize test amount 2020-09-08 15:28:49 +02:00
Joost Jager
17a6175e8b
routing+routerrpc: rename PaymentAttemptPenalty to AttemptCost
Make field names consistent with the command line flag.
2020-09-08 14:07:56 +02:00
Conner Fromknecht
6622c4814e
multi: enforce routing.MinCLTVDelta=18 for invoices + chanupd
This commit clamps all user-chosen CLTVs in LND to be at least 18, which
is the new conservative value used in the sepc. This minimum is applied
uniformly to forwarding CLTV deltas (via channel updates) as well as
final CLTV deltas for new invoices.
2020-07-24 13:13:56 -07:00
Olaoluwa Osuntokun
bdc0d875bc
Merge pull request #4327 from joostjager/stuck-payment-loop
routing: don't treat bad features as an unexpected error
2020-05-28 15:43:09 -07:00
Joost Jager
3ef68baf4a
routing: don't treat bad features as an unexpected error
Previous behavior led to the payment loop being abandoned immediately,
resulting in a payment stuck in state in_flight.
2020-05-27 12:15:53 +02:00
Conner Fromknecht
d0d2ca403d
multi: rename ReadTx to RTx 2020-05-26 18:20:37 -07:00
Conner Fromknecht
2f84d1a819
Merge pull request #4280 from cfromknecht/read-for-each-node
channeldb: remove Tx arg from ForEachNode
2020-05-13 16:37:10 -07:00
Conner Fromknecht
90d3bf532d
channeldb+routing: remove tx arg for ForEachNode 2020-05-12 17:53:20 -07:00
Joost Jager
674c199047
routing: return full htlc attempt from router 2020-05-12 19:56:52 +02:00
Joost Jager
cc37485432
routing: return full htlc attempt from shard handler 2020-05-12 19:56:50 +02:00
Joost Jager
c33d94ff27
routing+routerrpc: add multiple outgoing channel restriction 2020-05-12 07:17:24 +02:00
Joost Jager
53e4876a1d
routing/test: add channel id constants 2020-05-12 07:17:22 +02:00
Andras Banki-Horvath
556e3525ea misc: fix error formatting in multiple files 2020-04-24 19:15:08 +02:00
Andras Banki-Horvath
ebf058a2a5 routing: static check fix, time.Since instead of Now().Sub() 2020-04-24 19:15:08 +02:00
Andras Banki-Horvath
4773ae17d9 routing: remove unused code 2020-04-24 19:15:08 +02:00
Joost Jager
f6b2410011
routing+routerrpc: rename max_shards to max_parts
Don't introduce a new term and align with the P in MPP.
2020-04-22 14:49:19 +02:00
Joost Jager
7fc1938f10
routing: payment splitting pre-check
This commit reverts cb4cd49dc8d3b0255afe9ff29af9c46c2dbb2c98 to bring
back the insufficient local balance failure.

Distinguishing betweeen this failure and a regular "no route" failure
prevents meaningless htlcs from being sent out.
2020-04-18 08:30:26 +02:00
Joost Jager
f44a9e1d4c
routing/test: make test channel capacities configurable 2020-04-17 15:56:19 +02:00
Joost Jager
805641adf5
routing: do not split payment if destination does not support mpp 2020-04-17 14:23:57 +02:00
Joost Jager
9bd7eb74b6
routing: add prefix logger for payment session 2020-04-17 14:23:55 +02:00
Joost Jager
6e8442b333
routing: move payment session constructor 2020-04-16 16:25:24 +02:00
Joost Jager
969eecc7d2
routing+routerrpc+lncli: rename MaxHtlcs to MaxShards 2020-04-14 10:31:59 +02:00
Joost Jager
110c99f676
routing: continue trying after mpp timeout
It can happen that the receiver times out some htlcs of the set if it
took to long to complete. But because the sender's mission control is
now updated, it is worth to keep trying to send those shards again.
2020-04-09 08:20:52 +02:00
Joost Jager
e9bd691e6a
routerrpc+routing: adapt payment session for multi shard send
Modifies the payment session to launch additional pathfinding attempts
for lower amounts. If a single shot payment isn't possible, the goal is
to try to complete the payment using multiple htlcs. In previous
commits, the payment lifecycle has been prepared to deal with
partial-amount routes returned from the payment session. It will query
for additional shards if needed.

Additionally a new rpc payment parameter is added that controls the
maximum number of shards that will be used for the payment.
2020-04-09 08:20:49 +02:00
Joost Jager
46f5fc7400
routing: distinguish between receiver amount and total amount in newRoute 2020-04-09 08:20:47 +02:00
Joost Jager
e5c7e9a38c
routing/test: return pathfinding error 2020-04-09 08:20:45 +02:00
Joost Jager
0f8eb80965
routing/test: use fixed identifiers in test graph 2020-04-09 08:20:43 +02:00
Joost Jager
3c6e4612ff
routing/test: expose full list of htlc attempts 2020-04-09 08:20:41 +02:00
Joost Jager
b13616a593
routing/test: use payment session in integrated routing test
Cover the payment session in the integrated routing test as a
preparation for executing the upcoming mpp split logic as part of the
test.
2020-04-09 08:20:39 +02:00
Joost Jager
47f9c1c3fd
routing: use routingGraph interface in payment session
Preparation for more test coverage of payment session.

The function findPath now has the call signature of the former
findPathInternal function.
2020-04-09 08:20:37 +02:00
Joost Jager
cb4cd49dc8
routing: map insufficient local bandwidth error to no path
With mpp it isn't possible anymore for findPath to determine that there
isn't enough local bandwidth. The full payment amount isn't known at
that point.

In a follow-up, this payment outcome can be reintroduced on a higher
level (payment lifecycle).
2020-04-09 08:20:35 +02:00
Joost Jager
af4abe7d58
routing+routerrpc: notify full payment structures
This commit fixes the inconsistency between the payment state as
reported by routerrpc.SendPayment/routerrpc.TrackPayment and the main
rpc ListPayments call.

In addition to that, payment state changes are now sent out for every
state change. This opens the door to user interfaces giving more
feedback to the user about the payment process. This is especially
interesting for multi-part payments.
2020-04-08 09:26:33 +02:00
Joost Jager
278915e598
channeldb: return updated payment on attempt update
Similar to what is done for SettleAttempt.

Co-authored-by: Johan T. Halseth <johanth@gmail.com>
2020-04-08 08:54:01 +02:00
Joost Jager
5d0a117162
routing: fix log 2020-04-08 08:14:10 +02:00
Johan T. Halseth
5e72a4b77c
routing: exit on unexpected RequestRoute error
We whitelist a set of "expected" errors that can be returned from
RequestRoute, by converting them into a new type noRouteError. For any
other error returned by RequestRoute, we'll now exit immediately.
2020-04-02 19:31:24 +02:00
Johan T. Halseth
95c5a123c8
routing/router_test: add TestSendToRouteMultiShardSend 2020-04-02 19:31:23 +02:00
Johan T. Halseth
864e64e725
channeldb: validate MPP options when registering attempts
We add validation making sure we are not trying to register MPP shards
for non-MPP payments, and vice versa. We also add validtion of total
sent amount against payment value, and matching MPP options.

We also add methods for copying Route/Hop, since it is useful to use
for modifying the route amount in the test.
2020-04-02 19:31:23 +02:00
Johan T. Halseth
36a80b4d51
routing/router: enable MPP sends for SendToRoute
This commit enables MPP sends for SendToRoute, by allowing launching
another payment attempt if the hash is already registered with the
ControlTower.

We also set the total payment amount of of the payment from mpp record,
to indicate that the shard value might be different from the total
payment value.

We only mark non-MPP payments as failed in the database after
encountering a failure, since we might want to try more shards for MPP.
For now this means that MPP sendToRoute payments will be failed
only after a restart has happened.
2020-04-02 19:29:15 +02:00
Johan T. Halseth
431372c0cf
routing/payment_lifecycle_test: add MPP test cases 2020-04-02 19:29:15 +02:00
Johan T. Halseth
7b318a4be7
routing/payment_lifecycle+channeldb: enable multi shard send
This commit finally enables MP payments within the payment lifecycle
(used for SendPayment). This is done by letting the loop launch shards
as long as there is value remaining to send, inspecting the outcomes for
the sent shards when the full payment amount has been filled.

The method channeldb.MPPayment.SentAmt() is added to easily look up how
much value we have sent for the payment.
2020-04-02 19:29:15 +02:00
Johan T. Halseth
0fd71cd596
routing/payment_lifecycle_test: add step for terminal failure
And modify the MissionControl mock to return a non-nil failure reason in
this case.
2020-04-02 19:29:15 +02:00
Johan T. Halseth
2e63b518b7
routing/payment_lifecycle_test+mock: set up listener for FailAttempt
Also rename Success to SettleAttempt in the tests.
2020-04-02 19:29:15 +02:00
Johan T. Halseth
aa9c971dc0
routing/payment_lifecycle_test: extract route creation into method
This also fixes a test bug that the manually created route didn't match
the actual payment amount in the test cases, and adds some fees to the
route.
2020-04-02 19:29:14 +02:00
Johan T. Halseth
4d343bbb46
routing tests: move TestRouterPaymentStateMachine to own file
(almost) PURE CODE MOVE
The only code change is to change a few select cases from

case _ <- channel:
to
case <- channel:

to please the linter.

The test is testing the payment lifecycle, so move it to
payment_lifecycle_test.go
2020-04-02 19:29:14 +02:00