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5591c0b5d8
Keeping the uintmap ordering all the broadcastable messages is expensive: 130MB for the million-channels project. But now we delete obsolete entries from the store, we can have the per-peer daemons simply read that sequentially and stream the gossip itself. This is the most primitive version, where all gossip is streamed; successive patches will bring back proper handling of timestamp filtering and initial_routing_sync. We add a gossip_state field to track what's happening with our gossip streaming: it's initialized in gossipd, and currently always set, but once we handle timestamps the per-peer daemon may do it when the first filter is sent. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
34 lines
835 B
C
34 lines
835 B
C
#ifndef LIGHTNING_COMMON_GOSSIP_STORE_H
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#define LIGHTNING_COMMON_GOSSIP_STORE_H
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#include "config.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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struct per_peer_state;
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/**
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* gossip_store -- On-disk storage related information
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*/
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#define GOSSIP_STORE_VERSION 5
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/**
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* Bit of length we use to mark a deleted record.
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*/
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#define GOSSIP_STORE_LEN_DELETED_BIT 0x80000000U
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/**
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* Direct store accessor: loads gossip msg from store.
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*
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* Returns NULL and resets time_to_next_gossip(pps) if there are no
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* more gossip msgs.
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*/
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u8 *gossip_store_next(const tal_t *ctx, struct per_peer_state *pps);
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/**
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* Switches the gossip store fd, and gets to the correct offset.
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*/
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void gossip_store_switch_fd(struct per_peer_state *pps,
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int newfd, u64 offset_shorter);
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#endif /* LIGHTNING_COMMON_GOSSIP_STORE_H */
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