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Send virLogMetadata fields onto the journal

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The systemd journal accepts arbitrary user specified log
fields. These can be passed into virLogMessage via the
virLogMetadata structure. Allow up to 5 custom fields to
be reported by libvirt callers.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2014-02-21 17:21:55 +00:00
parent 97962616c1
commit 54209df345
1 changed files with 16 additions and 2 deletions
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18
src/util/virlog.c
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@ -1153,7 +1153,7 @@ virLogOutputToJournald(virLogSource source,
int linenr,
const char *funcname,
const char *timestamp ATTRIBUTE_UNUSED,
virLogMetadataPtr metadata ATTRIBUTE_UNUSED,
virLogMetadataPtr metadata,
unsigned int flags,
const char *rawstr,
const char *str ATTRIBUTE_UNUSED,
@ -1172,8 +1172,11 @@ virLogOutputToJournald(virLogSource source,
* be a tmpfs, and one that is available from early boot on
* and where unprivileged users can create files. */
char path[] = "/dev/shm/journal.XXXXXX";
size_t nmetadata = 0;
# define NUM_FIELDS 6
# define NUM_FIELDS_CORE 6
# define NUM_FIELDS_META 5
# define NUM_FIELDS (NUM_FIELDS_CORE + NUM_FIELDS_META)
struct iovec iov[NUM_FIELDS * 5];
char iov_bufs[NUM_FIELDS][JOURNAL_BUF_SIZE];
struct journalState state;
@ -1192,6 +1195,17 @@ virLogOutputToJournald(virLogSource source,
journalAddInt(&state, "CODE_LINE", linenr);
if (funcname)
journalAddString(&state, "CODE_FUNC", funcname);
if (metadata != NULL) {
while (metadata->key != NULL &&
nmetadata < NUM_FIELDS_META) {
if (metadata->s != NULL)
journalAddString(&state, metadata->key, metadata->s);
else
journalAddInt(&state, metadata->key, metadata->iv);
metadata++;
nmetadata++;
}
}
memset(&sa, 0, sizeof(sa));
sa.sun_family = AF_UNIX;