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60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
#include "config.h"
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#include <common/timeout.h>
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#include <gossipd/gossipd.h>
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#include <gossipd/txout_failures.h>
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/* Convenience to tell the two failure maps apart */
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#define RECENT 0
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#define AGED 1
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#define MAX_ENTRIES 10000
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/* Once an hour, or at 10000 entries, we expire old ones */
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static void txout_failures_age(struct txout_failures *txf)
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{
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uintmap_clear(&txf->failures[AGED]);
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txf->failures[AGED] = txf->failures[RECENT];
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uintmap_init(&txf->failures[RECENT]);
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txf->num = 0;
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txf->age_timer = new_reltimer(&txf->daemon->timers, txf,
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time_from_sec(3600),
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txout_failures_age, txf);
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}
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struct txout_failures *txout_failures_new(const tal_t *ctx, struct daemon *daemon)
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{
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struct txout_failures *txf = tal(ctx, struct txout_failures);
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txf->daemon = daemon;
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uintmap_init(&txf->failures[RECENT]);
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uintmap_init(&txf->failures[AGED]);
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txout_failures_age(txf);
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return txf;
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}
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void txout_failures_add(struct txout_failures *txf,
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const struct short_channel_id scid)
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{
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if (uintmap_add(&txf->failures[RECENT], scid.u64, true)
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&& ++txf->num == MAX_ENTRIES) {
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tal_free(txf->age_timer);
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txout_failures_age(txf);
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}
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}
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bool in_txout_failures(struct txout_failures *txf,
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const struct short_channel_id scid)
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{
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if (uintmap_get(&txf->failures[RECENT], scid.u64))
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return true;
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/* If we were going to expire it, we no longer are. */
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if (uintmap_get(&txf->failures[AGED], scid.u64)) {
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txout_failures_add(txf, scid);
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return true;
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}
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return false;
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}
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