// Lock tries to set a temporary lock in the database.
// If a lock already exists with the given name/owner, then the lock is renewed
//
// Lock does not block, instead, it returns true and its expiration time
// is the lock has been successfully acquired or false otherwise
func Lock(name string, duration time.Duration, owner string) (bool, time.Time) {
pruneLocks()
until := time.Now().Add(duration)
untilString := strconv.FormatInt(until.Unix(), 10)
// Try to get the expiration time of a lock with the same name/owner
currentExpiration, err := toValue(cayley.StartPath(store, name).Has("locked_by", owner).Out("locked_until"))
if err == nil && currentExpiration != "" {
// Renew our lock
if currentExpiration == untilString {
return true, until
}
t := cayley.NewTransaction()
t.RemoveQuad(cayley.Quad(name, "locked_until", currentExpiration, ""))
t.AddQuad(cayley.Quad(name, "locked_until", untilString, ""))
// It is not necessary to verify if the lock is ours again in the transaction
// because if someone took it, the lock's current expiration probably changed and the transaction will fail
return store.ApplyTransaction(t) == nil, until
}
t := cayley.NewTransaction()
t.AddQuad(cayley.Quad(name, "locked", "locked", "")) // Necessary to make the transaction fails if the lock already exists (and has not been pruned)
t.AddQuad(cayley.Quad(name, "locked_until", untilString, ""))
t.AddQuad(cayley.Quad(name, "locked_by", owner, ""))
glog.SetStderrThreshold("FATAL")
success := store.ApplyTransaction(t) == nil
glog.SetStderrThreshold("ERROR")
return success, until
}
// Healthcheck simply adds and then remove a quad in Cayley to ensure it is working
// It returns true when everything is ok
func Healthcheck() health.Status {
var err error
if store != nil {
t := cayley.NewTransaction()
q := cayley.Triple("cayley", "is", "healthy")
t.AddQuad(q)
t.RemoveQuad(q)
glog.SetStderrThreshold("FATAL") // TODO REMOVE ME
err = store.ApplyTransaction(t)
glog.SetStderrThreshold("ERROR") // TODO REMOVE ME
}
return health.Status{IsEssential: true, IsHealthy: err == nil, Details: nil}
}
func benchmarkVulnerabilities(b *testing.B, sublayersCount, packagesCount, packagesPerBranchesCount int) {
glog.SetVerbosity(0)
glog.SetAlsoToStderr(false)
glog.SetStderrThreshold("FATAL")
reset()
err := database.Open("sql", dbInfo)
if err != nil {
panic(err)
}
defer database.Close()
defer reset()
layerID := generateLayersData(sublayersCount, packagesCount, packagesPerBranchesCount)
var v []*database.Vulnerability
for n := 0; n < b.N; n++ {
// store result to prevent the compiler eliminating the function call.
v = getVulnerabilities(layerID)
}
// store result to prevent the compiler eliminating the Benchmark itself.
vulnerabilities = v
}