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#ifndef LIGHTNING_COMMON_GOSSIP_STORE_H
#define LIGHTNING_COMMON_GOSSIP_STORE_H
#include "config.h"
#include <ccan/endian/endian.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
struct per_peer_state;
/**
* gossip_store -- On-disk storage related information
*/
#define GOSSIP_STORE_VERSION 7
/**
* Bit of length we use to mark a deleted record.
*/
#define GOSSIP_STORE_LEN_DELETED_BIT 0x80000000U
/**
* Bit of length we use to mark an important record.
*/
#define GOSSIP_STORE_LEN_PUSH_BIT 0x40000000U
/* Mask for extracting just the length part of len field */
#define GOSSIP_STORE_LEN_MASK \
(~(GOSSIP_STORE_LEN_PUSH_BIT | GOSSIP_STORE_LEN_DELETED_BIT))
/**
* gossip_hdr -- On-disk format header.
*/
struct gossip_hdr {
beint32_t len; /* Length of message after header. */
beint32_t crc; /* crc of message of timestamp, after header. */
beint32_t timestamp; /* timestamp of msg. */
};
/**
* Direct store accessor: loads gossip msg from store.
*
* Returns NULL and resets time_to_next_gossip(pps) if there are no
* more gossip msgs.
*/
u8 *gossip_store_next(const tal_t *ctx, struct per_peer_state *pps);
/**
* Switches the gossip store fd, and gets to the correct offset.
*/
void gossip_store_switch_fd(struct per_peer_state *pps,
int newfd, u64 offset_shorter);
/**
* Sets up the tiemstamp filter once they told us to set it.(
*/
void gossip_setup_timestamp_filter(struct per_peer_state *pps,
u32 first_timestamp,
u32 timestamp_range);
#endif /* LIGHTNING_COMMON_GOSSIP_STORE_H */