Commit Graph

2036 Commits

Author SHA1 Message Date
Rusty Russell
e28443ed40 bkpr: pass bkpr struct into all functions in recorder.c.
We want to access it in stmt2chain_event, so plumb it through.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
0afc4c0346 bookkeeper: use the in-memory rebalances.
Remove the rebalance field from channel_event, and use the
find_rebalance(bkpr, ev->db_id) to look it up instead.

chain_event's also had a `rebalance` field, but it was only ever set
(to false), never read.

Note: list_rebalances() was only used by tests, not a public API.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
6dcc580612 bkpr: infrastructure to keep rebalance pairs in mem & datastore.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
af2e403490 bkpr: use the in-memory event descriptions, not the database ones.
The new access APIs are more symmetrical:

1. edit_utxo_description -> add_utxo_description
2. add_payment_hash_desc -> add_payment_hash_description

And to read it, instead of accessing ->ev_desc (now removed) we use
chain_event_description() & channel_event_description(), threading bkpr though
as needed.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
e012a82c60 bookkeeper: infrastructure to keep descriptions (annotations) in mem and datastore.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
66d3680f0c bkpr: remove onchain_fees table.
This proves we don't access it any more.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
bf9c864e0f bkpr: save and restore onchain_fees from the datastore, not the db.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
4e49a66c03 bkpr: keep onchain_fees in memory & datastore.
This is not quite as efficient, perhaps, but in practice there are only
a handful of onchain fee records per account.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
568f12ea71 bkpr: remove redundant account_onchain_fees
It's account_get_chain_fees() without the ORDER BY clause, *and* it's
only used on the run-recorder.c test.

I also got ChatGPT to compare them, in case I missed something subtle.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
5dc88c9e84 bkpr: move onchain fees access into bkpr/onchain_fee.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
902f821f88 bkpr: remove accounts table from db altogether.
This proves we don't access it any more.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
fd657e8483 ]bkpr: save accounts in the datastore instead of database.
Note that the test where we remove the database causes the bookkeeper
plugin to assert, since we have removed part (but not all!) of its data
by removing the datastore.

Once the transition to the datastore is complete, this can be restored.

Note that we destroy the request before receiving a response, which causes
a message in the trace span which was confusing our test.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
9c786a20a7 bkpr: use direct names, not another table, in db.
This simplifies the transition (since accounts are going to be outside
the db).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
f72df6da9c bkpr: cache accounts table in memory.
When we don't have our own db, we're going to need to keep this information
in memory (and the datastore).  As a first step, simply cache it in memory
and still write through to the db.

This introduces some changes:
1. The account structures are not temporary, but in the hash table (so don't steal them).
2. test_forward_pad_fees_and_cltv assumed ordering, which was a latent bug.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
fb20a55706 bkpr: find_or_create_account() instead of raw new_account().
In practice, it's always either find_account() or find_or_create_account().

This means account_add can be made internal: we rename it to
account_db_add.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
40c0d86a5c bkpr: move account db functions from recorder.c into account.c.
This will let us cache them gradually in account.c, and eventually
remove the database table.

We also change find_close_account() to find_close_account_name(),
and maybe_mark_account_onchain() into account_onchain_closeheight()
and account_update_closeheight();

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
41856dc6c0 bkpr: expose struct bkpr to outside bookkeeper.c.
We're going to add more members here, so we will start handing around
the whole thing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
c00d12fa0d bookkeeper: use modern plugin_get_data() instead of globals.
Slightly neater as we expand this, but also handles memleak natively!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
030863d10b bkpr: strings in structures should be const.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
b7e95e49b4 bkpr: send a backtrace if we get a fatal db event.
Particularly useful if we do something outside a transaction if I mess
up the code, e.g:

```
bookkeeper: Attempting to prepare a db_stmt outside of a transaction: plugins/bkpr/recorder.c:591 (version v25.05-112-g4daf355-modded)
0x5caefda2414b send_backtrace
	common/daemon.c:33
0x5caefda08a30 db_error
	plugins/bkpr/db.c:133
0x5caefda4cb32 db_fatal
	db/utils.c:322
0x5caefda4cc9e db_prepare_v2_
	db/utils.c:103
0x5caefda0dcbe get_chain_events_by_id
	plugins/bkpr/recorder.c:591
0x5caefda063ce json_edit_desc_payment_id
	plugins/bkpr/bookkeeper.c:550
0x5caefda13ad3 ld_command_handle
	plugins/libplugin.c:2185
0x5caefda13d27 ld_read_json_one
	plugins/libplugin.c:2274
0x5caefda13dba ld_read_json
	plugins/libplugin.c:2294
0x5caefdab5478 next_plan
	ccan/ccan/io/io.c:60
0x5caefdab5949 do_plan
	ccan/ccan/io/io.c:422
0x5caefdab5a06 io_ready
	ccan/ccan/io/io.c:439
0x5caefdab7375 io_loop
	ccan/ccan/io/poll.c:455
0x5caefda1420c plugin_main
	plugins/libplugin.c:2507
0x5caefda07762 main
	plugins/bkpr/bookkeeper.c:2048
0x79a7c522a1c9 __libc_start_call_main
	../sysdeps/nptl/libc_start_call_main.h:58
0x79a7c522a28a __libc_start_main_impl
	../csu/libc-start.c:360
0x5caefda00374 ???
	???:0
0xffffffffffffffff ???
	???:0
Attempting to prepare a db_stmt outside of a transaction: plugins/bkpr/recorder.c:591
```
2025-08-19 13:37:50 +09:30
Rusty Russell
c5a80336a1 bkpr: NULL-out the function migrations.
Note that these migrations were inserted for v0.12, so only someone
upgrading directly from before that (2022-08-23) would be affected.

This avoids having to fix the migrations as we make changes.

We are going to mangle the db to allow testing, but then the final
step will be to migrate it to the core.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
19dab62d61 sql: avoid trying to do parallel refreshes.
Simply wait if there's one going already.  This is a minor
optimization, but critical for the case where we do partial refreshes
asynchonously (rather than deleting everything and reloading).  This
is currently only coinmoves and chainmoves, but the duplicated effort
is a waste everywhere.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
3ae222540b plugins/sql: use created_index as primary key, where available.
It's a unique integer, and very useful for querying changes.  Unlike
our generated rowid, it's *stable* across queries.

We still need an explicit rowid column for list commands which don't
(currently) have this.

Here's the documentation diff:

    @@ -85,69 +85,69 @@
     TABLES
     ------
     
    -Note that the first column of every table is a unique integer called `rowid`: this is used for related tables to refer to specific rows in their parent. sqlite3 usually has this as an implicit column, but we make it explicit as the implicit version is not allowed to be used as a foreign key.
    +Note that tables which have a `created_index` field use that as the primary key (and `rowid` is an alias to this), otherwise an explicit `rowid` integer primary key is generated, whose value changes on each refresh.  This field is used for related tables to refer to specific rows in their parent. (sqlite3 usually has this as an implicit column, but we make it explicit as the implicit version is not allowed to be used as a foreign key).
     
     The following tables are currently supported:
     - `bkpr_accountevents` (see lightning-bkpr-listaccountevents(7))
    @@ -119,14 +119,14 @@
       - `payment_id` (type `hex`, sqltype `BLOB`)
     
     - `chainmoves` indexed by `account_id` (see lightning-listchainmoves(7))
    -  - `created_index` (type `u64`, sqltype `INTEGER`)
    +  - `created_index` (type `u64`, sqltype `INTEGER PRIMARY KEY`)
       - `account_id` (type `string`, sqltype `TEXT`)
       - `credit_msat` (type `msat`, sqltype `INTEGER`)
       - `debit_msat` (type `msat`, sqltype `INTEGER`)
       - `timestamp` (type `u64`, sqltype `INTEGER`)
       - `primary_tag` (type `string`, sqltype `TEXT`)
       - related table `chainmoves_extra_tags`
    -    - `row` (reference to `chainmoves.rowid`, sqltype `INTEGER`)
    +    - `row` (reference to `chainmoves.created_index`, sqltype `INTEGER`)
         - `arrindex` (index within array, sqltype `INTEGER`)
         - `extra_tags` (type `string`, sqltype `TEXT`)
       - `peer_id` (type `pubkey`, sqltype `BLOB`)
    @@ -139,7 +139,7 @@
       - `blockheight` (type `u32`, sqltype `INTEGER`)
     
     - `channelmoves` indexed by `account_id` (see lightning-listchannelmoves(7))
    -  - `created_index` (type `u64`, sqltype `INTEGER`)
    +  - `created_index` (type `u64`, sqltype `INTEGER PRIMARY KEY`)
       - `account_id` (type `string`, sqltype `TEXT`)
       - `credit_msat` (type `msat`, sqltype `INTEGER`)
       - `debit_msat` (type `msat`, sqltype `INTEGER`)
    @@ -204,7 +204,7 @@
       - `last_stable_connection` (type `u64`, sqltype `INTEGER`)
     
     - `forwards` indexed by `in_channel` and `in_htlc_id` (see lightning-listforwards(7))
    -  - `created_index` (type `u64`, sqltype `INTEGER`)
    +  - `created_index` (type `u64`, sqltype `INTEGER PRIMARY KEY`)
       - `in_channel` (type `short_channel_id`, sqltype `TEXT`)
       - `in_htlc_id` (type `u64`, sqltype `INTEGER`)
       - `in_msat` (type `msat`, sqltype `INTEGER`)
    @@ -222,7 +222,7 @@
     
     - `htlcs` indexed by `short_channel_id` and `id` (see lightning-listhtlcs(7))
       - `short_channel_id` (type `short_channel_id`, sqltype `TEXT`)
    -  - `created_index` (type `u64`, sqltype `INTEGER`)
    +  - `created_index` (type `u64`, sqltype `INTEGER PRIMARY KEY`)
       - `updated_index` (type `u64`, sqltype `INTEGER`)
       - `id` (type `u64`, sqltype `INTEGER`)
       - `expiry` (type `u32`, sqltype `INTEGER`)
    @@ -242,7 +242,7 @@
       - `bolt12` (type `string`, sqltype `TEXT`)
       - `local_offer_id` (type `hash`, sqltype `BLOB`)
       - `invreq_payer_note` (type `string`, sqltype `TEXT`)
    -  - `created_index` (type `u64`, sqltype `INTEGER`)
    +  - `created_index` (type `u64`, sqltype `INTEGER PRIMARY KEY`)
       - `updated_index` (type `u64`, sqltype `INTEGER`)
       - `pay_index` (type `u64`, sqltype `INTEGER`)
       - `amount_received_msat` (type `msat`, sqltype `INTEGER`)
    @@ -408,7 +408,7 @@
       - `features` (type `hex`, sqltype `BLOB`)
     
     - `sendpays` indexed by `payment_hash` (see lightning-listsendpays(7))
    -  - `created_index` (type `u64`, sqltype `INTEGER`)
    +  - `created_index` (type `u64`, sqltype `INTEGER PRIMARY KEY`)
       - `id` (type `u64`, sqltype `INTEGER`)
       - `groupid` (type `u64`, sqltype `INTEGER`)
       - `partid` (type `u64`, sqltype `INTEGER`)

Changelog-Changed: Plugins: `sql` tables `forwards`, `htlcs`, `invoices`, `sendpays` all use `created_index` as their primary key (and `rowid` is now an alias to this).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
a36e7794f0 sql: optimize listchainmoves and listchannelmoves accesses.
We don't yet do the other list commands, as they are not append-only:
we would need to check deletes and updates.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-19 13:37:50 +09:30
Rusty Russell
cfbca30b7f plugins/sql: add listchainmoves and listchannelmoves.
And note the other commands in See Also section.

Note that this means handling the "outpoint" type.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `sql` plugin now supports `chainmoves` and `channelmoves` tables.
2025-08-19 13:37:50 +09:30
Rusty Russell
6799dbe656 xpay: add option to pay bip353.
Changelog-Added: JSON-RPC: `xpay` can now directly pay a BIP353 address, like `₿rusty@rustcorp.com.au`.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-18 14:57:46 +09:30
Rusty Russell
103a49ef51 xpay: support paying a (simple) bolt12 offer directly.
fetchinvoice is still good for detailed diagnostics and handling
recurring invoices and alternate currencies, but this covers the
"throw some sats" case well.

Changelog-Added: JSON-RPC: `xpay` can now pay a simple offer directly, rather than requiring fetchinvoice first.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-18 14:57:46 +09:30
Rusty Russell
5345e71727 offers: fix fetchinvoice from using disconnected peers.
We didn't remove them from the graph if they were disconnected, leading to us trying to send an onion message to it:

```
➜  ~ lightning-cli fetchinvoice 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 1sat 
{
   "code": -1,
   "message": "onion msg: unknown next peer 024b9a1fa8e006f1e3937f65f66c408e6da8e1ca728ea43222a7381df1cc449605"
}
```

Fixes: https://github.com/ElementsProject/lightning/issues/8225
Changelog-Fixed: JSON-RPC: `fetchinvoice` is now more reliable.
2025-08-18 14:19:27 +09:30
Alex Myers
1d513c2207 reckless-rpc: increase initial buffer size
Reckless uv installations typically produce 3KB+ of output.
2025-08-18 14:04:48 +09:30
Rusty Russell
6bac381a3f cln-plugin: adapt send_custom_notification to send modern-style notifications.
Modern style for notifications is to put everything inside an object
of same name as the method.

For now this means duplication for backward compatibility.  ChatGPT
helped me do that.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-18 10:01:07 +09:30
Rusty Russell
5d5741e681 libplugin: correctly wrap notifications we send in the notification name.
All the core notifications changed over to wrapping the notification
fields in an object with the name of the notification, but notifications
from plugins were missed.

Changelog-Added: Plugins: `channel_hint_update`, `pay_failure` and `pay_success` notifications now have objects of the same name containing the expected fields.
Changelog-Deprecated: Plugins: `channel_hint_update`, `pay_failure` and `pay_success` notification fields outside the same-named object.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-18 10:01:07 +09:30
Rusty Russell
16819f345d lightningd: make notifications from plugins just like native ones.
Rather than forcing them to wrap their parameters in a "payload"
sub-object, copy in params directly.  We include the "origin" field
one level up, if they care.

The next patch restores compatibility for the one place we currently use
them, which is the pay plugin.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: pyln-client: plugin custom notifications origins and payload (use parameters directly)
2025-08-18 10:01:07 +09:30
Lagrang3
1830c0e2e1 xpay: add developer option dev_maxparts
dev_maxparts limits the number of pending routes allowed at any given
time.

Changelog-None

Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
2025-08-15 16:13:19 +09:30
Lagrang3
0c5c7a5334 askrene: add maxparts
Changelog-Added: askrene: add a new parameter maxparts to getroutes that limits the number of routes in the solution.

Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
2025-08-15 16:13:19 +09:30
Lagrang3
b298e3fc97 askrene: refine: add helper function remove_flows
remove_flows is a helper function to remove flows from a set so that we
keep the number of flows limited.

Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
2025-08-15 16:13:19 +09:30
longhutianjie
f1bfa71e7b chore: fix some minor issues
Signed-off-by: longhutianjie <keplrnewton@icloud.com>
2025-08-15 11:05:51 +09:30
Rusty Russell
22b452ad19 lightningd: have onchaind inform us when to make a channel penalty_adj.
bookkeeper used to generate these as channel events, now lightningd does.

We also add a "journal" event, which we will need later too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
b1fa2ef30b bkpr: remove different currency support.
We still output the fields, they're just always the currency of the node.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Plugins: `bookkeeper` now explicitly assumes every transaction is in the same currency as the node (true unless you added manually)
2025-08-14 19:49:09 +09:30
Rusty Russell
47c2735e17 bkpr: remove currency support from balances.
We're going to get rid of this concept, but the main change is that the
account_get_balance API can be drastically simplified:

account_get_credit_debit() accesses the raw fields, never fails, but
returns the a flag which tells us if the account doesn't actually have
any events.

The one place we care about the balance, calculate by hand.  Then
account_get_balance() (and struct account_balance) can simply be
moved to th test.

Subtly, without the "GROUP BY" clause, you always get one row, even if
there are no rows (but the SUM are null).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
0c9dc4cf07 bkpr: remove unused "account_exits" parameter to account_get_balance().
Only used in tests.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
b0231a59d8 common: put "external" and "wallet" strings, and test functions into common/coin_mvt.h
They're scattered and reproduced in many places: unify them.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
841a8bd03a lightningd: extract core of coin_movement notification, for use in list functions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: JSON-RPC: `coin_movement` notification `utxo_txid`, `vout` and `txid` fields (use `utxo` and `spending_txid`).
Changelog-Added: JSON-RPC: `coin_movement` notification `utxo` field.
Changelog-Added: JSON-RPC: `coin_movement` notification `spending_txid` field.
2025-08-14 19:49:09 +09:30
Rusty Russell
650f3882dd lightningd: separate coin_movement tags array into primary_tag and extra_tags.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: JSON-RPC: `coin_movement` notification `tags` array (use `primary_tag` and `extra_tags`).
Changelog-Added: JSON-RPC: `coin_movement` notification `primary_tag` and `extra_tags`.
2025-08-14 19:49:09 +09:30
Rusty Russell
5756b54f38 common: rename enum mvt_tag values.
Prefix MVT_ to them, for clarity.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
6fc0b1f3d1 common/coin_mvt: add struct mvt_account_id to separate channels from others.
This means we can keep a pointer to the channel directly, *or* a string.
This avoids gratuitous formatting (on creation) and lookups (later).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
b8b1d45ddc db: hand amount_msat / amount_sat by copy, not pointer.
This is how we handle amount_msat and amount_sat everywhere these days, and this
wasn't updated.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
0534c524b5 common: remove "ignored" tag.
We don't actually set it any more.  The bookkeeper db does a migration
for old anchors.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
Rusty Russell
a25c1d45ad libplugin: make jsonrpc_set_datastore_binary() take an explicit length.
This means it doesn't have to be a tal ptr.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2025-08-14 19:49:09 +09:30
daywalker90
e3e41163e2 cln-bip353: add plugin that fetches payment instructions from human readable addresses
Changelog-Add: new plugin cln-bip353 that can fetch BIP-353 payment instructions from human readable addresses
2025-08-14 18:41:23 +09:30
Matt Whitlock
9112c1d518 common/json_parse_simple: make convenience functions inline
json_tok_streq(…) and json_get_member(…) are convenience wrappers for
json_tok_strneq(…) and json_get_membern(…) respectively. Unfortunately, using
them incurs a performance penalty in the common case where they are called with
a string literal argument because the compiler is unable to substitute a
compile-time constant in place of the buried call to strlen(…).

For example,

	json_get_member(buf, tok, "example");

…will have worse performance than…

	json_get_membern(buf, tok, "example", strlen("example"));

…because the former is forced to scan over "example" at run-time to count its
length whereas the latter is able to elide the strlen(…) call at compile time.

Hoist these convenience functions up into common/json_parse_simple.h and mark
them as inline so that the compiler can elide the strlen(…) call in the common
case of calling these functions with a string literal argument.

Changelog-None
2025-08-14 17:53:39 +09:30