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77 lines
2.0 KiB
77 lines
2.0 KiB
#ifndef LIGHTNING_GOSSIPD_GOSSIP_STORE_H
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#define LIGHTNING_GOSSIPD_GOSSIP_STORE_H
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#include "config.h"
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#include <bitcoin/short_channel_id.h>
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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#include <gossipd/routing.h>
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/**
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* gossip_store -- On-disk storage related information
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*/
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struct broadcast_state;
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struct gossip_store;
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struct routing_state;
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struct gossip_store *gossip_store_new(struct routing_state *rstate);
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/**
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* Load the initial gossip store, if any.
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*
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* @param rstate The routing state to load init.
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* @param gs The `gossip_store` to read from
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*/
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void gossip_store_load(struct routing_state *rstate, struct gossip_store *gs);
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/**
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* Add a gossip message to the gossip_store (and optional addendum)
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*/
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u64 gossip_store_add(struct gossip_store *gs, const u8 *gossip_msg,
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const u8 *addendum);
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/**
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* Remember that we deleted a channel as a result of its outpoint being spent
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*/
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void gossip_store_add_channel_delete(struct gossip_store *gs,
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const struct short_channel_id *scid);
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/**
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* Direct store accessor: loads gossip msg back from store.
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*
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* Caller must ensure offset != 0. Never returns NULL.
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*/
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const u8 *gossip_store_get(const tal_t *ctx,
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struct gossip_store *gs,
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u64 offset);
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/**
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* If we need to compact the gossip store, do so.
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* @gs: the gossip store.
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* @bs: a pointer to the broadcast state: replaced if we compact it.
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* @offset: the change in the store, if any.
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*
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* If return value is true, caller must update peers.
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*/
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bool gossip_store_maybe_compact(struct gossip_store *gs,
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struct broadcast_state **bs,
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u32 *offset);
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/* Expose for dev-compact-gossip-store to force compaction. */
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bool gossip_store_compact(struct gossip_store *gs,
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struct broadcast_state **bs,
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u32 *offset);
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/**
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* Get a readonly fd for the gossip_store.
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* @gs: the gossip store.
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*
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* Returns -1 on failure, and sets errno.
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*/
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int gossip_store_readonly_fd(struct gossip_store *gs);
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#endif /* LIGHTNING_GOSSIPD_GOSSIP_STORE_H */
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