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c0dd3cd826
Expecting to have more than just a bunch of disabled channels if we prune the lightning network heavily I am changing the internal data structure of disabledmap from a simple array to a hashtable. Have a finer control over disabled channels by targeting short_channel_id_dir instead of short_channel_id, ie. we can disable a single direction of a channel. Signed-off-by: Lagrang3 <lagrang3@protonmail.com>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
#ifndef LIGHTNING_PLUGINS_RENEPAY_DISABLEDMAP_H
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#define LIGHTNING_PLUGINS_RENEPAY_DISABLEDMAP_H
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#include "config.h"
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#include <bitcoin/short_channel_id.h>
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#include <ccan/bitmap/bitmap.h>
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#include <ccan/htable/htable_type.h>
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#include <common/gossmap.h>
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#include <common/node_id.h>
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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. Letting same
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* scid with two directions collide. */
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return (scidd.scid.u64 >> 32) ^ (scidd.scid.u64 >> 16) ^ scidd.scid.u64;
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}
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static inline struct short_channel_id_dir
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self_scidd(const struct short_channel_id_dir *self)
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{
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return *self;
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}
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static inline bool
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my_short_channel_id_dir_eq(const struct short_channel_id_dir *scidd_a,
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const struct short_channel_id_dir scidd_b)
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{
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return short_channel_id_eq(scidd_a->scid, scidd_b.scid) &&
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scidd_a->dir == scidd_b.dir;
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}
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/* A htable for short_channel_id_dir, the structure itself is the element key.
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*/
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HTABLE_DEFINE_TYPE(struct short_channel_id_dir, self_scidd, hash_scidd,
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my_short_channel_id_dir_eq, scidd_map);
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struct disabledmap {
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/* Channels we decided to disable for various reasons. */
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struct scidd_map *disabled_map;
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tal_t *disabled_ctx;
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/* Channels that we flagged for failures. If warned two times we will
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* disable it. */
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struct scidd_map *warned_map;
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tal_t *warned_ctx;
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/* nodes we disable */
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// FIXME: use a map also for nodes
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struct node_id *disabled_nodes;
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};
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void disabledmap_reset(struct disabledmap *p);
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struct disabledmap *disabledmap_new(const tal_t *ctx);
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void disabledmap_add_channel(struct disabledmap *p,
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struct short_channel_id_dir scidd);
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void disabledmap_warn_channel(struct disabledmap *p,
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struct short_channel_id_dir scidd);
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void disabledmap_add_node(struct disabledmap *p, struct node_id node);
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bool disabledmap_channel_is_warned(struct disabledmap *p,
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struct short_channel_id_dir scidd);
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bitmap *tal_disabledmap_get_bitmap(const tal_t *ctx, struct disabledmap *p,
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const struct gossmap *gossmap);
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#endif /* LIGHTNING_PLUGINS_RENEPAY_DISABLEDMAP_H */
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