Allow selecting coins in `sendcoins` by yyforyongyu · Pull Request #8955 · lightningnetwork/lnd

yyforyongyu · 2024-07-30T09:35:33Z

Replaces #8516, fixes #6949

coderabbitai · 2024-07-30T09:35:37Z

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hieblmi

Thanks for picking this up @yyforyongyu! I've checked out the test cases you added and left a suggestion. Since the original commits did not change and were already approved I will only aim for a tAck in my next review round.

hieblmi · 2024-08-05T08:38:55Z

+
+	// Since the first two UTXOs have been sent to an address outside her
+	// wallet, Alice should see a single UTXO now.
+	ht.AssertNumUTXOs(alice, 1)


Could we further check that the remaining coin can't be selected and spent in its entirety so that the required reserves are not violated?

On this note, should the API allow to spend the coin up until the required reserve and not return an error unless other constraints like the dust limit of the sending amount are reached? Maybe further tests can document behavior here as well.

yeah I like it, added a test to show how it behaves atm.

guggero

Not too far off I think, mainly some code style changes on the wish list.

guggero · 2024-08-05T12:58:56Z


+		// Use select utxos, if provided.
+		if len(selectUtxos) > 0 {
+			utxos, err = fetchUtxosFromOutpoints(utxos,


nit: formatting.

hieblmi

Thanks for the additional itest that documents the utxo selection and channel reserves.

I've tested multiple scenarios in regtest that I also confirmed in the first version of this PR, tACK ✅

EDIT: The test failures seem unrelated to this PR.

hieblmi · 2024-08-06T17:17:15Z

+// also checks that change outputs will be created automatically if `SendAll`
+// flag is set.
+func testSendSelectedCoinsChannelReserve(ht *lntest.HarnessTest) {
+	chanAmt := btcutil.Amount(100000)


nit: 100_000

hieblmi · 2024-08-06T18:01:49Z

+	tx := ht.GetNumTxsFromMempool(1)[0]
+
+	// Assert the tx has the expected shape. It should have 2 inputs and 2
+	// output.


nit: outputs

guggero

Nice, LGTM 🎉

Signed-off-by: Ononiwu Maureen <59079323+Chinwendu20@users.noreply.github.com>

This commit updates the interface methods from `lnwallet.WalletController` to take optional input set which can be used to create the tx.

Signed-off-by: Ononiwu Maureen <59079323+Chinwendu20@users.noreply.github.com>

Also rename the send all coins test for clarity.

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 		},
 		cli.BoolFlag{
 			Name: "sweepall",
-			Usage: "if set, then the amount field will be ignored, " +


yyforyongyu added rpc Related to the RPC interface utxo sweeping labels Jul 30, 2024

yyforyongyu added this to the v0.18.3 milestone Jul 30, 2024

yyforyongyu requested review from guggero and hieblmi July 30, 2024 09:35

saubyk assigned yyforyongyu Aug 1, 2024

hieblmi reviewed Aug 5, 2024

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guggero mentioned this pull request Aug 5, 2024

Simplify coin selection for sendcoins #8516

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8 tasks

guggero reviewed Aug 5, 2024

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yyforyongyu force-pushed the cr-8516-240729-sendcoins branch 2 times, most recently from 6ccb920 to 0cb2739 Compare August 6, 2024 08:00

yyforyongyu requested review from guggero and hieblmi August 6, 2024 11:55

hieblmi approved these changes Aug 6, 2024

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guggero approved these changes Aug 7, 2024

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Chinwendu20 and others added 9 commits August 7, 2024 20:42

lnrpc: Add Outpoint field in SendCoinsRequest

468ca87

Signed-off-by: Ononiwu Maureen <59079323+Chinwendu20@users.noreply.github.com>

multi: expand SendOutputs and CreateSimpleTx to take utxos

99339f7

This commit updates the interface methods from `lnwallet.WalletController` to take optional input set which can be used to create the tx.

sweep: Add selectUtxos to CraftSweepAllTx args

13bad2c

lnd: modify sendcoin rpc impl for select utxos

b50a1e6

Signed-off-by: Ononiwu Maureen <59079323+Chinwendu20@users.noreply.github.com>

cmd: Export and move utxosToOutpoint.

900d7fd

Signed-off-by: Ononiwu Maureen <59079323+Chinwendu20@users.noreply.github.com>

lncli: Add outpoints flag to sendcoins command

0184846

Signed-off-by: Ononiwu Maureen <59079323+Chinwendu20@users.noreply.github.com>

itest+lntest: return the error from SendCoinsAssertErr

0041426

Also rename the send all coins test for clarity.

itest: add testSendSelectedCoins to check selected utxos

e542351

docs: update release notes

dcd8269

yyforyongyu force-pushed the cr-8516-240729-sendcoins branch from 0cb2739 to dcd8269 Compare August 7, 2024 12:43

guggero merged commit d776174 into lightningnetwork:master Aug 7, 2024

yyforyongyu deleted the cr-8516-240729-sendcoins branch August 7, 2024 15:02

kaloudis mentioned this pull request Aug 7, 2024

LND: ability to use full UTXO during channel open or on-chain payment ZeusLN/zeus#790

Closed

starius mentioned this pull request Sep 19, 2024

sweep, rpcserver: optimize SendAll cost wise #8936

Closed

6 tasks

kaloudis mentioned this pull request Sep 21, 2024

[feature]: External Accounts: Coin Control: add ability to spend a full UTXO #9130

Open

baldbull69 reviewed Dec 12, 2024

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Comment thread cmd/lncli/commands.go

},

cli.BoolFlag{

Name: "sweepall",

Usage: "if set, then the amount field will be ignored, " +

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losh11 mentioned this pull request May 19, 2025

Allow coin selection for SendCoins ltcsuite/lnd#14

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yyforyongyu commented Jul 30, 2024

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