/*
* __txn_log_recover --
* Roll the log forward to recover committed changes.
*/
static int
__txn_log_recover(WT_SESSION_IMPL *session,
WT_ITEM *logrec, WT_LSN *lsnp, WT_LSN *next_lsnp,
void *cookie, int firstrecord)
{
WT_RECOVERY *r;
const uint8_t *end, *p;
uint64_t txnid;
uint32_t rectype;
WT_UNUSED(next_lsnp);
r = cookie;
p = WT_LOG_SKIP_HEADER(logrec->data);
end = (const uint8_t *)logrec->data + logrec->size;
WT_UNUSED(firstrecord);
/* First, peek at the log record type. */
WT_RET(__wt_logrec_read(session, &p, end, &rectype));
switch (rectype) {
case WT_LOGREC_CHECKPOINT:
if (r->metadata_only)
WT_RET(__wt_txn_checkpoint_logread(
session, &p, end, &r->ckpt_lsn));
break;
case WT_LOGREC_COMMIT:
WT_RET(__wt_vunpack_uint(&p, WT_PTRDIFF(end, p), &txnid));
WT_UNUSED(txnid);
WT_RET(__txn_commit_apply(r, lsnp, &p, end));
break;
}
return (0);
}
/*
* __txn_log_recover --
* Roll the log forward to recover committed changes.
*/
static int
__txn_log_recover(WT_SESSION_IMPL *session,
WT_ITEM *logrec, WT_LSN *lsnp, WT_LSN *next_lsnp,
void *cookie, int firstrecord)
{
WT_DECL_RET;
WT_RECOVERY *r;
uint64_t txnid_unused;
uint32_t rectype;
const uint8_t *end, *p;
r = cookie;
p = WT_LOG_SKIP_HEADER(logrec->data);
end = (const uint8_t *)logrec->data + logrec->size;
WT_UNUSED(firstrecord);
/* First, peek at the log record type. */
WT_RET(__wt_logrec_read(session, &p, end, &rectype));
/*
* Record the highest LSN we process during the metadata phase.
* If not the metadata phase, then stop at that LSN.
*/
if (r->metadata_only)
r->max_rec_lsn = *next_lsnp;
else if (__wt_log_cmp(lsnp, &r->max_rec_lsn) >= 0)
return (0);
switch (rectype) {
case WT_LOGREC_CHECKPOINT:
if (r->metadata_only)
WT_RET(__wt_txn_checkpoint_logread(
session, &p, end, &r->ckpt_lsn));
break;
case WT_LOGREC_COMMIT:
if ((ret = __wt_vunpack_uint(
&p, WT_PTRDIFF(end, p), &txnid_unused)) != 0)
WT_RET_MSG(
session, ret, "txn_log_recover: unpack failure");
WT_RET(__txn_commit_apply(r, lsnp, &p, end));
break;
}
return (0);
}
