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98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
#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 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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struct list_head *peers);
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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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* Returns the last-modified time of the store, or 0 if it was created new.
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*/
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u32 gossip_store_load(struct routing_state *rstate, struct gossip_store *gs);
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/**
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* Add a private channel_update message to the gossip_store
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*/
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u64 gossip_store_add_private_update(struct gossip_store *gs, const u8 *update);
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/**
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* Add a gossip message to the gossip_store (and optional addendum)
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* @gs: gossip store
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* @gossip_msg: the gossip message to insert.
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* @timestamp: the timestamp for filtering of this messsage.
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* @push: true if this should be sent to peers despite any timestamp filters.
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* @addendum: another message to append immediately after this
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* (for appending amounts to channel_announcements for internal use).
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*/
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u64 gossip_store_add(struct gossip_store *gs, const u8 *gossip_msg,
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u32 timestamp, bool push, const u8 *addendum);
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/**
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* Delete the broadcast associated with this (if any).
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*
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* In developer mode, checks that type is correct.
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*/
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void gossip_store_delete(struct gossip_store *gs,
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struct broadcastable *bcast,
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int type);
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/**
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* Mark that the channel is about to be deleted, for convenience of
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* others mapping the gossip_store.
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*/
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void gossip_store_mark_channel_deleted(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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* Direct store accessor: loads private 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_private_update(const tal_t *ctx,
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struct gossip_store *gs,
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u64 offset);
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/* Exposed for dev-compact-gossip-store to force compaction. */
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bool gossip_store_compact(struct gossip_store *gs);
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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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/* Callback inside gossipd when store is compacted */
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void update_peers_broadcast_index(struct list_head *peers, u32 offset);
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#endif /* LIGHTNING_GOSSIPD_GOSSIP_STORE_H */
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