Add list_channels_by_counterparty method

[tnull]

While we already provide a list_channels method, it could result in quite a large Vec<ChannelDetails>. Here, we provide the means to query our channels by counterparty_node_id and DRY up the code.

[tnull]

Uh, CI is broken again, although seems unrelated:

error[E0793]: reference to packed field is unaligned
    --> C:\Users\runneradmin\.cargo\registry\src\git.colasdn.top-1ecc6299db9ec823\ntapi-0.3.7\src\ntexapi.rs:2783:52
     |
2783 |         *tick_count.QuadPart_mut() = read_volatile(&(*USER_SHARED_DATA).u.TickCountQuad);
     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
     = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)

error[E0793]: reference to packed field is unaligned
    --> C:\Users\runneradmin\.cargo\registry\src\git.colasdn.top-1ecc6299db9ec823\ntapi-0.3.7\src\ntexapi.rs:2807:25
     |
2807 |         ((read_volatile(&(*USER_SHARED_DATA).u.TickCountQuad)
     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |
     = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
     = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)

For more information about this error, try `rustc --explain E0793`.
error: could not compile `ntapi` due to 2 previous errors

[codecov-commenter]

Codecov Report

Patch coverage: 93.10% and project coverage change: +0.12 🎉

Comparison is base (d355ce1) 91.13% compared to head (8419d13) 91.25%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2079      +/-   ##
==========================================
+ Coverage   91.13%   91.25%   +0.12%     
==========================================
  Files         101      101              
  Lines       48769    49913    +1144     
  Branches    48769    49913    +1144     
==========================================
+ Hits        44445    45550    +1105     
- Misses       4324     4363      +39     

Impacted Files	Coverage Δ
lightning/src/ln/channelmanager.rs	88.87% <93.10%> (-0.05%)	⬇️
lightning/src/ln/functional_tests.rs	98.24% <0.00%> (+<0.01%)	⬆️
lightning-background-processor/src/lib.rs	78.51% <0.00%> (+0.09%)	⬆️
lightning/src/ln/peer_channel_encryptor.rs	92.85% <0.00%> (+0.51%)	⬆️
lightning-rapid-gossip-sync/src/lib.rs	88.77% <0.00%> (+0.61%)	⬆️
lightning-invoice/src/utils.rs	98.13% <0.00%> (+1.22%)	⬆️
lightning/src/ln/functional_test_utils.rs	94.34% <0.00%> (+2.01%)	⬆️
lightning/src/ln/peer_handler.rs	65.17% <0.00%> (+2.57%)	⬆️
lightning-invoice/src/de.rs	79.22% <0.00%> (+3.20%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[arik-so]

is this significantly faster than just doing a .filter on list_channels?

[tnull]

It should avoid the allocation of a large Vec<ChannelDetails> that we then filter down again. But really not sure what that does in actual performance. It would be nice to just expose list_channels_with_filter, but we of course can't do that since Channel is not public.

[jkczyz]

Scope not needed.

[jkczyz]

LGTM

[tnull]

Alright, never in a hast trust vim's formatting capabilities.

Squashed commits with the indentation fixups:

$ git diff-tree -U2 f08bdb57 8419d13d
diff --git a/lightning/src/ln/channelmanager.rs b/lightning/src/ln/channelmanager.rs
index 779cb5d2..50cdd2a4 100644
--- a/lightning/src/ln/channelmanager.rs
+++ b/lightning/src/ln/channelmanager.rs
@@ -1251,5 +1251,5 @@ impl ChannelDetails {
                                outbound_htlc_minimum_msat: if channel.have_received_message() {
                                        Some(channel.get_counterparty_htlc_minimum_msat()) } else { None },
-                                       outbound_htlc_maximum_msat: channel.get_counterparty_htlc_maximum_msat(),
+                               outbound_htlc_maximum_msat: channel.get_counterparty_htlc_maximum_msat(),
                        },
                        funding_txo: channel.get_funding_txo(),
@@ -1807,5 +1807,5 @@ where
                                .iter()
                                .map(|(_, channel)|
-                                        ChannelDetails::from_channel(channel, best_block_height, features.clone()))
+                                       ChannelDetails::from_channel(channel, best_block_height, features.clone()))
                                .collect();
                }