/*
* __txn_printlog --
* Print a log record in a human-readable format.
*/
static int
__txn_printlog(
WT_SESSION_IMPL *session, WT_ITEM *logrec, WT_LSN *lsnp, void *cookie)
{
FILE *out;
WT_LSN ckpt_lsn;
const uint8_t *end, *p;
const char *msg;
uint64_t txnid;
uint32_t fileid, rectype;
int32_t start;
out = cookie;
p = (const uint8_t *)logrec->data + offsetof(WT_LOG_RECORD, record);
end = (const uint8_t *)logrec->data + logrec->size;
/* First, peek at the log record type. */
WT_RET(__wt_logrec_read(session, &p, end, &rectype));
if (fprintf(out, " { \"lsn\" : [%" PRIu32 ",%" PRId64 "],\n",
lsnp->file, lsnp->offset) < 0)
return (errno);
switch (rectype) {
case WT_LOGREC_CHECKPOINT:
WT_RET(__wt_struct_unpack(session, p, WT_PTRDIFF(end, p),
WT_UNCHECKED_STRING(IQ), &ckpt_lsn.file, &ckpt_lsn.offset));
if (fprintf(out, " \"type\" : \"checkpoint\"\n") < 0 ||
fprintf(
out, " \"ckpt_lsn\" : [%" PRIu32 ",%" PRId64 "],\n",
ckpt_lsn.file, ckpt_lsn.offset) < 0)
return (errno);
break;
case WT_LOGREC_COMMIT:
WT_RET(__wt_vunpack_uint(&p, WT_PTRDIFF(end, p), &txnid));
if (fprintf(out, " \"type\" : \"commit\"\n") < 0 ||
fprintf(out, " \"txnid\" : %" PRIu64 ",\n", txnid) < 0)
return (errno);
WT_RET(__txn_commit_printlog(session, &p, end, out));
break;
case WT_LOGREC_FILE_SYNC:
WT_RET(__wt_struct_unpack(session, p, WT_PTRDIFF(end, p),
WT_UNCHECKED_STRING(Ii), &fileid, &start));
if (fprintf(out, " \"type\" : \"file_sync\"\n") < 0 ||
fprintf(out, " \"fileid\" : %" PRIu32 "\n",
fileid) < 0 ||
fprintf(out, " \"start\" : %" PRId32 "\n", start) < 0)
return (errno);
break;
case WT_LOGREC_MESSAGE:
WT_RET(__wt_struct_unpack(session, p, WT_PTRDIFF(end, p),
WT_UNCHECKED_STRING(S), &msg));
if (fprintf(out, " \"type\" : \"message\"\n") < 0 ||
fprintf(out, " \"message\" : \"%s\"\n", msg) < 0)
return (errno);
break;
}
if (fprintf(out, " },\n") < 0)
return (errno);
return (0);
}
/*
* __txn_printlog --
* Print a log record in a human-readable format.
*/
static int
__txn_printlog(WT_SESSION_IMPL *session,
WT_ITEM *rawrec, WT_LSN *lsnp, WT_LSN *next_lsnp,
void *cookie, int firstrecord)
{
FILE *out;
WT_LOG_RECORD *logrec;
WT_LSN ckpt_lsn;
int compressed;
uint64_t txnid;
uint32_t fileid, rectype;
int32_t start;
const uint8_t *end, *p;
const char *msg;
WT_UNUSED(next_lsnp);
out = cookie;
p = WT_LOG_SKIP_HEADER(rawrec->data);
end = (const uint8_t *)rawrec->data + rawrec->size;
logrec = (WT_LOG_RECORD *)rawrec->data;
compressed = F_ISSET(logrec, WT_LOG_RECORD_COMPRESSED);
/* First, peek at the log record type. */
WT_RET(__wt_logrec_read(session, &p, end, &rectype));
if (!firstrecord)
WT_RET(__wt_fprintf(out, ",\n"));
WT_RET(__wt_fprintf(out,
" { \"lsn\" : [%" PRIu32 ",%" PRId64 "],\n",
lsnp->file, lsnp->offset));
WT_RET(__wt_fprintf(out,
" \"hdr_flags\" : \"%s\",\n", compressed ? "compressed" : ""));
WT_RET(__wt_fprintf(out,
" \"rec_len\" : %" PRIu32 ",\n", logrec->len));
WT_RET(__wt_fprintf(out,
" \"mem_len\" : %" PRIu32 ",\n",
compressed ? logrec->mem_len : logrec->len));
switch (rectype) {
case WT_LOGREC_CHECKPOINT:
WT_RET(__wt_struct_unpack(session, p, WT_PTRDIFF(end, p),
WT_UNCHECKED_STRING(IQ), &ckpt_lsn.file, &ckpt_lsn.offset));
WT_RET(__wt_fprintf(out, " \"type\" : \"checkpoint\",\n"));
WT_RET(__wt_fprintf(out,
" \"ckpt_lsn\" : [%" PRIu32 ",%" PRId64 "]\n",
ckpt_lsn.file, ckpt_lsn.offset));
break;
case WT_LOGREC_COMMIT:
WT_RET(__wt_vunpack_uint(&p, WT_PTRDIFF(end, p), &txnid));
WT_RET(__wt_fprintf(out, " \"type\" : \"commit\",\n"));
WT_RET(__wt_fprintf(out,
" \"txnid\" : %" PRIu64 ",\n", txnid));
WT_RET(__txn_commit_printlog(session, &p, end, out));
break;
case WT_LOGREC_FILE_SYNC:
WT_RET(__wt_struct_unpack(session, p, WT_PTRDIFF(end, p),
WT_UNCHECKED_STRING(Ii), &fileid, &start));
WT_RET(__wt_fprintf(out, " \"type\" : \"file_sync\",\n"));
WT_RET(__wt_fprintf(out,
" \"fileid\" : %" PRIu32 ",\n", fileid));
WT_RET(__wt_fprintf(out,
" \"start\" : %" PRId32 "\n", start));
break;
case WT_LOGREC_MESSAGE:
WT_RET(__wt_struct_unpack(session, p, WT_PTRDIFF(end, p),
WT_UNCHECKED_STRING(S), &msg));
WT_RET(__wt_fprintf(out, " \"type\" : \"message\",\n"));
WT_RET(__wt_fprintf(out, " \"message\" : \"%s\"\n", msg));
break;
}
WT_RET(__wt_fprintf(out, " }"));
return (0);
}
