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journal: implement GetUsage() (sd_journal_get_usage()) #122

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merged 1 commit into from
Nov 4, 2015
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Merged

journal: implement GetUsage() (sd_journal_get_usage()) #122

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14 changes: 14 additions & 0 deletions sdjournal/journal.go
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Original file line number Diff line number Diff line change
Expand Up @@ -237,3 +237,17 @@ func (j *Journal) Wait(timeout time.Duration) int {

return int(r)
}

// GetUsage returns the journal disk space usage, in bytes.
func (j *Journal) GetUsage() (uint64, error) {
var out C.uint64_t
j.mu.Lock()
err := C.sd_journal_get_usage(j.cjournal, &out)
j.mu.Unlock()

if err != 0 {
return 0, fmt.Errorf("failed to get journal disk space usage: %d", err)
}

return uint64(out), nil
}
20 changes: 20 additions & 0 deletions sdjournal/journal_test.go
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Expand Up @@ -68,3 +68,23 @@ func TestJournalFollow(t *testing.T) {
t.Fatalf("Error during follow: %s", err)
}
}

func TestJournalGetUsage(t *testing.T) {
j, err := NewJournal()

if err != nil {
t.Fatalf("Error opening journal: %s", err)
}

if j == nil {
t.Fatal("Got a nil journal")
}

defer j.Close()

_, err = j.GetUsage()

if err != nil {
t.Fatalf("Error getting journal size: %s", err)
}
}