lnrpc: add incoming/outgoing channel ids filter to forwarding history request #9356

funyug · 2024-12-13T09:33:07Z

Change Description

This PR adds incoming channel ids and outgoing channel ids filter to forwarding history rpc call by introducing incoming_channel_ids and outgoing_channel_ids parameters to filter the events.

Steps to Test

Steps for reviewers to follow to test the change.

Start LND
Run lncli fwdinghistory --incoming_chan_ids=m where m is a channel id

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Testing

Your PR passes all CI checks.
Tests covering the positive and negative (error paths) are included.
Bug fixes contain tests triggering the bug to prevent regressions.

Code Style and Documentation

The change obeys the Code Documentation and Commenting guidelines, and lines wrap at 80.
Commits follow the Ideal Git Commit Structure.
Any new logging statements use an appropriate subsystem and logging level.
Any new lncli commands have appropriate tags in the comments for the rpc in the proto file.
There is a change description in the release notes, or [skip ci] in the commit message for small changes.

📝 Please see our Contribution Guidelines for further guidance.

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Abdulkbk · 2025-04-01T16:54:53Z

Some CI are failing and the logs have expired. Could you rebase and push?

funyug · 2025-04-02T19:02:09Z

Rebased and pushed

Abdulkbk · 2025-04-02T20:35:35Z

Rebased and pushed

Great.

I will drop a review tomorrow. In the meantime I think the lint CI is failing; I think all you need to do is add an empty line after the statement here

funyug · 2025-04-03T15:00:06Z

Fixed the linting issue

Abdulkbk

This PR looks very neat. I just left a few nits and suggestions. Also don't forget to add a release-note.

I also tested this with a cluster of 3 nodes alice -> bob -> hank, made some transactions and the lncli fwdinghistory --incoming_chan_ids=<...> --outgoing_chan_ids=<...> works as expected, works correctly with the other existing params --max_events, --index_offset, ...

Good job!

Abdulkbk · 2025-04-03T18:58:18Z

cmd/commands/cmd_payments.go

@@ -1597,6 +1611,21 @@ func forwardingHistory(ctx *cli.Context) error {
 		NumMaxEvents:    maxEvents,
 		PeerAliasLookup: lookupPeerAlias,
 	}
+	outChan := ctx.Int64Slice("outgoing_chan_ids")


nit: could use outgoingChanIDs (and incomingChanIDs down) makes it immediately clear that these variables hold channel identifiers

channeldb/forwarding_log_test.go

Abdulkbk · 2025-04-04T20:31:32Z

channeldb/forwarding_log_test.go

+
+	require.Equal(t, expectedEvents, timeSlice.ForwardingEvents,
+		"unexpected events returned")
+}


I think we should also test for when IncomingChanIDs and OutgoingChanIDs are specified simultaneously.

@funyug - i think instead of having 2 verbose tests, you can just have 1 table driven tests with the various scenarios and expected results.

channeldb/forwarding_log.go

funyug · 2025-04-06T13:28:10Z

Thanks. Did the changes requested above, added the release note and rebased and squashed the commits.

Abdulkbk

LGTM 🚀

Left one more nit.

Also consider splitting your future PRs into structured commits to ease the review process.

Abdulkbk · 2025-04-07T06:30:38Z

docs/release-notes/release-notes-0.20.0.md

nit: maybe add your name under the contributors' section like it's done here

funyug · 2025-04-07T10:13:25Z

Thanks. Will split the PR into multiple commits in future.

guggero

Thanks for the feature. Looks pretty good, have a few simplifications to suggest.

guggero · 2025-04-11T11:07:57Z

channeldb/forwarding_log.go

+
+				// If both conditions are met, then we'll add
+				// the event to our return payload.
+				if incomingMatch && outgoingMatch {


Could invert this condition and do a continue. Then the rest of the code could continue without an additional level of indentation.

guggero · 2025-04-11T11:11:02Z

channeldb/forwarding_log_test.go

+	eventQuery := ForwardingEventQuery{
+		StartTime: initialTime,
+		EndTime:   endTime,
+		IncomingChanIDs: fn.NewSet(incomingChanIDs[0].ToUint64(),


nit: format these fn.NewSet() calls like other multi-line function calls.

Technically, the require.NoError() calls also fall under that rule, since they don't use string formatting templates (e.g. the function name doesn't end in an f to indicate formatting).

guggero · 2025-04-11T11:11:56Z

channeldb/forwarding_log_test.go

+		}
+	}
+
+	require.Equal(t, expectedEvents, timeSlice.ForwardingEvents,


See my comment above. IMO those additional context strings can just be omitted to make things tidier. The generated error message if this fails is pretty clear where things fail and what expectation failed. So often no additional context is needed in the first place.

guggero · 2025-04-11T11:12:45Z

channeldb/forwarding_log_test.go

+
+// TestForwardingLogQueryOutgoingChanIDs tests that querying the forwarding log
+// using only outgoing channel IDs returns the correct subset of events.
+func TestForwardingLogQueryOutgoingChanIDs(t *testing.T) {


Could this test be combined with the above? Creating events with both incoming and outgoing IDs, then do two different queries and compare the results?

cmd/commands/cmd_payments.go

rpcserver.go

guggero · 2025-04-11T11:22:43Z

rpcserver.go

+	incomingChanIDs = make(fn.Set[uint64], len(req.IncomingChanIds))
+	outgoingChanIDs = make(fn.Set[uint64], len(req.OutgoingChanIds))
+	for _, chanID := range req.IncomingChanIds {
+		incomingChanIDs.Add(chanID)
+	}
+
+	for _, chanID := range req.OutgoingChanIds {
+		outgoingChanIDs.Add(chanID)
+	}
+


Can just be:

incomingChanIDs := fn.NewSet(req.IncomingChanIds...) outgoingChanIDs := fn.NewSet(req.OutgoingChanIds...)

funyug · 2025-04-17T08:19:23Z

Did the changes mentioned above. Created a fixup commit and rebased the branch.

guggero · 2025-04-24T09:50:58Z

Will take a look once v0.19.0-beta (non-RC) is out and the feature freeze is over.

funyug · 2025-05-22T14:04:15Z

@guggero I see 0.19.0-beta is out. Should i rebase it for review now?

guggero · 2025-05-22T14:29:15Z

@guggero I see 0.19.0-beta is out. Should i rebase it for review now?

Yes please.

funyug · 2025-05-23T16:03:31Z

rebased

guggero

There are some unresolved comments from my last review. Can you please address those? This is quite close otherwise.

cmd/commands/cmd_payments.go

funyug · 2025-05-27T07:24:28Z

Can you point me to the ones that are unresolved. I think I did fix them all in the last commit.

lightninglabs-deploy · 2025-06-03T08:10:32Z

@funyug, remember to re-request review from reviewers when ready

funyug · 2025-06-03T10:40:29Z

@guggero waiting for further instructions

guggero · 2025-06-03T11:06:24Z

Can you point me to the ones that are unresolved. I think I did fix them all in the last commit.

Hmm, I must've looked at an old version by accident. Looks good now, thanks.

ellemouton

logic LGTM! I'll Approve it once the fixup commits have been squashed.

It's fine for this PR since it is relatively small, but I'd suggest that for future you try to structure your commits as follows:

first make the internal server changes (ie all your changes to channeldb and the unit test there. Ie, at this step the server can do the new thing but hasnt exposed the functionality yet.
Add the new proto fields (ie, expose the new server functionality)
Finally, update the client (lncli) to make use of the new server functionality.

This type of structure makes it way easier for a reviewer to "read" the PR

ellemouton · 2025-06-05T08:18:35Z

channeldb/forwarding_log_test.go

+
+	require.Equal(t, expectedEvents, timeSlice.ForwardingEvents,
+		"unexpected events returned")
+}


ellemouton · 2025-06-05T08:19:22Z

channeldb/forwarding_log_test.go

+
+	require.Equal(t, expectedEvents, timeSlice.ForwardingEvents,
+		"unexpected events returned")
+}


@funyug - i think instead of having 2 verbose tests, you can just have 1 table driven tests with the various scenarios and expected results.

ellemouton · 2025-06-10T06:22:34Z

@funyug - some changes were made to an area touched by this PR recently - so you'll need to please fix the merge conflicts 🙏

ellemouton

thanks @funyug 🙏

Please re-request review from me once you have squashed the fixup commits and addressed the test related comment 🙏

funyug · 2025-06-10T13:57:08Z

@ellemouton updated the tests as requested. Also fixed the linting issue, conflicts and squashed.

This commit adds incoming and outgoing channel ids filter to forwarding history request to filter events received/forwarded from/to a particular channel

ellemouton

thanks! LGTM! 🚀

saubyk assigned funyug Dec 13, 2024

saubyk added this to the 0.20.0 milestone Dec 13, 2024

funyug force-pushed the add-filters-fwdhistory branch from 21b7c97 to 12f979a Compare April 2, 2025 19:01

Abdulkbk reviewed Apr 4, 2025

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funyug force-pushed the add-filters-fwdhistory branch from 1040e23 to 9ae99da Compare April 6, 2025 13:27

Abdulkbk approved these changes Apr 7, 2025

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guggero self-requested a review April 7, 2025 08:16

funyug force-pushed the add-filters-fwdhistory branch from 9ae99da to ad4b755 Compare April 7, 2025 10:12

guggero reviewed Apr 11, 2025

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funyug force-pushed the add-filters-fwdhistory branch from ad4b755 to ab53876 Compare April 17, 2025 08:16

guggero requested review from guggero and removed request for guggero April 17, 2025 12:34

funyug force-pushed the add-filters-fwdhistory branch from ab53876 to 0e70bf1 Compare May 23, 2025 14:21

guggero self-requested a review May 26, 2025 07:22

guggero reviewed May 27, 2025

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cmd/commands/cmd_payments.go Outdated Show resolved Hide resolved

guggero approved these changes Jun 3, 2025

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guggero requested a review from ellemouton June 3, 2025 11:06

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funyug force-pushed the add-filters-fwdhistory branch from 587e4ef to b1cb0bc Compare June 10, 2025 11:26

ellemouton reviewed Jun 10, 2025

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funyug force-pushed the add-filters-fwdhistory branch from 74c846e to 6440b25 Compare June 10, 2025 13:54

lnrpc: add filters to forwardhistoryrequest

bfe1edf

This commit adds incoming and outgoing channel ids filter to forwarding history request to filter events received/forwarded from/to a particular channel

funyug force-pushed the add-filters-fwdhistory branch from 6440b25 to bfe1edf Compare June 11, 2025 03:40

funyug requested a review from ellemouton June 11, 2025 04:08

ellemouton approved these changes Jun 13, 2025

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yyforyongyu merged commit fe40542 into lightningnetwork:master Jun 14, 2025
37 of 38 checks passed

lnrpc: add incoming/outgoing channel ids filter to forwarding history request #9356

lnrpc: add incoming/outgoing channel ids filter to forwarding history request #9356

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funyug commented Dec 13, 2024

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