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321ec0875f
This is a bit more efficient, but moreover the JSONRPC API is more logical this way. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
#ifndef LIGHTNING_PLUGINS_ASKRENE_ASKRENE_H
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#define LIGHTNING_PLUGINS_ASKRENE_ASKRENE_H
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#include "config.h"
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#include <bitcoin/short_channel_id.h>
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#include <ccan/htable/htable_type.h>
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#include <ccan/list/list.h>
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#include <common/amount.h>
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#include <common/fp16.h>
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#include <common/node_id.h>
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#include <plugins/libplugin.h>
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struct gossmap_chan;
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/* A single route. */
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struct route {
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/* Actual path to take */
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struct route_hop *hops;
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/* Probability estimate (0-1) */
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double success_prob;
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};
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/* Grab-bag of "globals" for this plugin */
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struct askrene {
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struct plugin *plugin;
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struct gossmap *gossmap;
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/* List of layers */
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struct list_head layers;
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/* In-flight payment attempts */
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struct reserve_htable *reserved;
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/* Compact cache of gossmap capacities */
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fp16_t *capacities;
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/* My own id */
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struct node_id my_id;
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};
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/* Information for a single route query. */
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struct route_query {
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/* Command pointer, mainly for command id. */
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struct command *cmd;
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/* Plugin pointer, for logging mainly */
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struct plugin *plugin;
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/* This is *not* updated during a query! Has all layers applied. */
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const struct gossmap *gossmap;
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/* We need to take in-flight payments into account */
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const struct reserve_htable *reserved;
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/* Array of layers we're applying */
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const struct layer **layers;
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/* Cache of channel capacities for non-reserved, unknown channels. */
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fp16_t *capacities;
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/* Additional per-htlc cost for local channels */
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const struct additional_cost_htable *additional_costs;
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};
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/* Given a gossmap channel, get the current known min/max */
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void get_constraints(const struct route_query *rq,
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const struct gossmap_chan *chan,
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int dir,
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struct amount_msat *min,
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struct amount_msat *max);
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/* Is there a known additional per-htlc cost for this channel? */
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struct amount_msat get_additional_per_htlc_cost(const struct route_query *rq,
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const struct short_channel_id_dir *scidd);
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/* Useful plugin->askrene mapping */
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static inline struct askrene *get_askrene(struct plugin *plugin)
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{
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return plugin_get_data(plugin, struct askrene);
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}
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/* Convenience routine for hash tables */
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static inline size_t hash_scidd(const struct short_channel_id_dir *scidd)
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{
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/* scids cost money to generate, so simple hash works here */
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return (scidd->scid.u64 >> 32) ^ (scidd->scid.u64 >> 16) ^ (scidd->scid.u64 << 1) ^ scidd->dir;
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}
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#endif /* LIGHTNING_PLUGINS_ASKRENE_ASKRENE_H */
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