It is just a copy-paste of "dijkstra" but the name
implies what it actually is. Not an implementation of minimum cost path
Dijkstra algorithm, but a helper data structure.
I keep the old "dijkstra.h/c" files for the moment to avoid breaking the
current code.
Changelog-EXPERIMENTAL: askrene: add priorityqueue
Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
As we can see from the previous test, l3 tells us why it rejected the payment:
```
lightningd-3 2024-11-19T03:56:27.151Z DEBUG 022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d59-chan#1: Failing HTLC because of an invalid payload (TLV 10 pos 104): cltv_expiry 136 > payment_constraint 130
```
It turns out, we were not updating the block height in the plugin!
Without this, when we create a (non-dummy) blinded path we set a
too-low CLTV restriction, and it doesn't work after a few blocks!
Note we were actually triggering this error in the xpay tests!
Reported-by: Vincenzo Palazzo
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: Offers: Receiving bolt12 payments where we have no public channels would fail a few blocks after startup.
Payer metadata is a field that controls the payer ID
provided during the fetchinvoice process.
There are use cases where this is highly useful, such as
proving that the payer has paid for the correct item.
Imagine visiting a merchant's website to pay for multiple offers, where
one of these offers is a default offer (with no description and no set amount).
In this scenario, the merchant could claim not to have received
payment for a specific item. Since the same offer may be used to
fetch invoices for different products, there needs to be a way to
identify which product the invoice corresponds to.
With this commit, it will be possible to inject payer metadata,
which helps solve the issue described above.
For example, possible payer metadata could be `to_hex(b"{payer_node_id}.{product_id}.{created_at}")`.
Changelog-Added: JSON-RPC: `fetchinvoice` allows setting invreq_metadata via `payer_metadata` parameter.
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
This is required for VLS which wants to know (and potentially decline) invoices
we're trying to pay.
As a nice side effect, our "check" command for xpay now does much more thorough
checking of arguments.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
As the first user of a persistent layer, this tripped tests which
assumed the datastore would be empty!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Note: won't work with grpc (or probably other tools), since the output
is different. But good for testing.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Config: option `xpay-handle-pay` can be used to call xpay when pay is used in many cases (but output is different from pay!)
Because we initalized plugin->io_rpc_conn *after* calling plugin->init,
send_outreq would do a (harmless, in our case) wakeup on an uninitialized address:
```
==1164079== Conditional jump or move depends on uninitialised value(s)
==1164079== at 0x1628FC: backend_wake (poll.c:227)
==1164079== by 0x160B98: io_wake (io.c:384)
==1164079== by 0x1160A8: ld_rpc_send (libplugin.c:255)
==1164079== by 0x1187E0: send_outreq (libplugin.c:1099)
==1164079== by 0x115041: init (xpay.c:1620)
```
Solution is simple: set plugin->io_rpc_conn to NULL, and don't wake it in this case.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The `send_outreq` function is a good place to suspend and resume
traces, since these are usually the places where we hand off control
back to the `io_loop`. This assumes that we do not continue doing
heavy liftin after we have queued an `outreq` call, but that is most
likely the case anyway. This frees us from having to track suspensions
whenever we call the RPC from a plugin.
And use it for `exposesecret-passphrase`. This is probably overly
cautious, but it makes me feel a little better that we won't leak it
to someone with read-only access.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Being able to back up the hsm_secret is critical, but you cannot do
this through a UI, because of course we do not allow such access.
People have lost funds because they didn't back up.
This allows access to the hsm_secret if you use a password set in the
config file. (If it's not set, the command does not work). This is a
compromise, of course.
Changelog-Added: `exposesecret` command for encouraging hsm_secret backups.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This means we don't consume *all* the CPU.
Changelog-Fixed: Plugins: `autoclean` is now gentler on the node when doing giant cleans.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
On a large node, especially with postgres, this causes every other command
to take 30 seconds plus. The first, obvious, step is to reduce how many
commands we will do at once.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Given an {outpoint}, sets the description on the matching outpoint (if exists).
Note that if no outpoint exists in bookkeeper, will return an empty list
Changleog-Added: PLUGINS: bookkeeper has a new RPC `bkrp-editdescriptionbyoutpoint` which will set/update a description for an outpoint creation event.
This takes an {payment_id} and {description}.
It looks for all chain + channel events that match
that {payment_id} and updates the description for those events.
We return all the updated events. If no events are updated, an empty
list is returned.
Changelog-Added: PLUGINS: bookkeeper has a new RPC `bkpr-editdescriptionbypaymentid` which will update the description for any event with matching payment_id
The command called “splice” can take a json payload or a ‘splice script’, process it into a list of ‘actions’ and then execute those actions.
These actions include or will include everything you would want to do with a splice:
* Splice into a channel
* Splice out of a channel
* Fund from wallet
* Deposit to wallet
* Send funds to bitcoin address
Changelog-Added: A new magic “splice” command is added that can take a ‘splice script’ or json payload and perform any complex splice across multiple channels merging the result into a single transaction. Some features are disabled and will be added in time.
This lets you place annotated biases on channels, to influence routing.
Uses include avoiding TOR nodes, slow channels or other local preferences.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-None: askrene is new anyway.
Without knowing what method was called, we can't have useful general logging
methods, so go through the pain of adding "const char *method" everywhere,
and add:
1. ignore_and_complete - we're done when jsonrpc returned
2. log_broken_and_complete - we're done, but emit BROKEN log.
3. plugin_broken_cb - if this happens, fail the plugin.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When we used to allow cmd to be NULL, we had to hand the plugin
everywhere. We no longer do.
1. Various jsonrpc_ functions no longer need the plugin arg.
2. send_outreq no longer needs a plugin arg.
3. The init function takes a command, not a plugin.
4. Remove command_deprecated_in_nocmd_ok.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
