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logs-show: show seqnum info in export+json output mode

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This commit is contained in:
Lennart Poettering 2023-01-19 22:42:03 +01:00
parent b1712fabd1
commit 2bc70e2e9d
3 changed files with 35 additions and 12 deletions
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6
src/shared/journal-importer.c
View File

@ -14,6 +14,7 @@
#include "journal-util.h"
#include "parse-util.h"
#include "string-util.h"
#include "strv.h"
#include "unaligned.h"
enum {
@ -217,9 +218,8 @@ static int process_special_field(JournalImporter *imp, char *line) {
assert(line);
value = startswith(line, "__CURSOR=");
if (value)
/* ignore __CURSOR */
if (STARTSWITH_SET(line, "__CURSOR=", "__SEQNUM=", "__SEQNUM_ID="))
/* ignore __CURSOR=, __SEQNUM=, __SEQNUM_ID= which we cannot replicate */
return 1;
value = startswith(line, "__REALTIME_TIMESTAMP=");

39
src/shared/logs-show.c
View File

@ -791,11 +791,12 @@ static int output_export(
const dual_timestamp *previous_display_ts,
const sd_id128_t *previous_boot_id) {
sd_id128_t journal_boot_id, seqnum_id;
_cleanup_free_ char *cursor = NULL;
const void *data;
size_t length;
usec_t monotonic, realtime;
sd_id128_t journal_boot_id;
const void *data;
uint64_t seqnum;
size_t length;
int r;
assert(j);
@ -818,14 +819,22 @@ static int output_export(
if (r < 0)
return log_error_errno(r, "Failed to get monotonic timestamp: %m");
r = sd_journal_get_seqnum(j, &seqnum, &seqnum_id);
if (r < 0)
return log_error_errno(r, "Failed to get seqnum: %m");
fprintf(f,
"__CURSOR=%s\n"
"__REALTIME_TIMESTAMP="USEC_FMT"\n"
"__MONOTONIC_TIMESTAMP="USEC_FMT"\n"
"__REALTIME_TIMESTAMP=" USEC_FMT "\n"
"__MONOTONIC_TIMESTAMP=" USEC_FMT "\n"
"__SEQNUM=%" PRIu64 "\n"
"__SEQNUM_ID=%s\n"
"_BOOT_ID=%s\n",
cursor,
realtime,
monotonic,
seqnum,
SD_ID128_TO_STRING(seqnum_id),
SD_ID128_TO_STRING(journal_boot_id));
JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
@ -1040,15 +1049,16 @@ static int output_json(
const dual_timestamp *previous_display_ts,
const sd_id128_t *previous_boot_id) {
char usecbuf[DECIMAL_STR_MAX(usec_t)];
char usecbuf[CONST_MAX(DECIMAL_STR_MAX(usec_t), DECIMAL_STR_MAX(uint64_t))];
_cleanup_(json_variant_unrefp) JsonVariant *object = NULL;
sd_id128_t journal_boot_id, seqnum_id;
_cleanup_free_ char *cursor = NULL;
usec_t realtime, monotonic;
JsonVariant **array = NULL;
struct json_data *d;
Hashmap *h = NULL;
uint64_t seqnum;
size_t n = 0;
usec_t realtime, monotonic;
sd_id128_t journal_boot_id;
int r;
assert(j);
@ -1071,6 +1081,10 @@ static int output_json(
if (r < 0)
return log_error_errno(r, "Failed to get monotonic timestamp: %m");
r = sd_journal_get_seqnum(j, &seqnum, &seqnum_id);
if (r < 0)
return log_error_errno(r, "Failed to get seqnum: %m");
h = hashmap_new(&string_hash_ops);
if (!h)
return log_oom();
@ -1093,6 +1107,15 @@ static int output_json(
if (r < 0)
goto finish;
xsprintf(usecbuf, USEC_FMT, seqnum);
r = update_json_data(h, flags, "__SEQNUM", usecbuf, SIZE_MAX);
if (r < 0)
goto finish;
r = update_json_data(h, flags, "__SEQNUM_ID", SD_ID128_TO_STRING(seqnum_id), SIZE_MAX);
if (r < 0)
goto finish;
for (;;) {
const void *data;
size_t size;

2
test/units/testsuite-04.sh
View File

@ -70,7 +70,7 @@ ID=$(journalctl --new-id128 | sed -n 2p)
printf $'foo' | systemd-cat -t "$ID" --level-prefix false
journalctl --sync
journalctl -b -o export --output-fields=MESSAGE,FOO --output-fields=PRIORITY,MESSAGE -t "$ID" >/output
[[ $(grep -c . /output) -eq 6 ]]
[[ $(grep -c . /output) -eq 8 ]]
grep -q '^__CURSOR=' /output
grep -q '^MESSAGE=foo$' /output
grep -q '^PRIORITY=6$' /output