1102d8063e
We have the issue of aliases: xpay uses scids like 0x0x0 for routehints and blinded paths, and then can apply reservations to them. But generally, reservations are *global*, so we need to differentiate. Changelog-Added: Plugins: `askrene-reserve` and `askrene-unreserve` can take an optional `layer` inside `path` elements. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
#ifndef LIGHTNING_PLUGINS_ASKRENE_RESERVE_H
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#define LIGHTNING_PLUGINS_ASKRENE_RESERVE_H
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/* We have to know what payments are in progress, so we can take into
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* account the reduced capacity of channels. We do this by telling
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* everyone to reserve / unreserve paths as they use them. */
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#include "config.h"
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#include <bitcoin/short_channel_id.h>
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#include <common/amount.h>
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#include <common/fp16.h>
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/* Initialize hash table for reservations */
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struct reserve_htable *new_reserve_htable(const tal_t *ctx);
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struct reserve_hop {
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struct short_channel_id_dir scidd;
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struct amount_msat amount;
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/* If non-NULL, only applies to this layer */
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const struct layer *layer;
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};
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/* Add a reservation. */
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void reserve_add(struct reserve_htable *reserved,
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const struct reserve_hop *rhop,
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const char *cmd_id TAKES);
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/* Try to remove a reservation, if it exists. */
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bool reserve_remove(struct reserve_htable *reserved,
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const struct reserve_hop *rhop);
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/* Clear capacities array where we have reserves */
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void reserves_clear_capacities(struct reserve_htable *reserved,
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const struct gossmap *gossmap,
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fp16_t *capacities);
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/* Subtract any reserves for scidd from this amount */
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void reserve_sub(const struct reserve_htable *reserved,
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const struct short_channel_id_dir *scidd,
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const struct layer **layers,
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struct amount_msat *amount);
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/* Add any reserves for scidd to this amount */
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bool reserve_accumulate(const struct reserve_htable *reserved,
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const struct short_channel_id_dir *scidd,
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const struct layer *layer,
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struct amount_msat *amount);
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/* To explain why we couldn't route */
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const char *fmt_reservations(const tal_t *ctx,
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const struct reserve_htable *reserved,
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const struct short_channel_id_dir *scidd,
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const struct layer **layers);
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/* Print out a json object for all reservations */
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void json_add_reservations(struct json_stream *js,
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const struct reserve_htable *reserved,
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const char *fieldname,
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const struct layer **layers);
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#endif /* LIGHTNING_PLUGINS_ASKRENE_RESERVE_H */
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