// FinishAndSaveScan was created to alert that the scan being executed finished. This
// function is necessary to garantee concurrency acces for the current scan information.
// Will set all necessary information and save the scan into the database for future
// reports. Only a part of the scan is saved into the database, because some information
// is only useful during the execution
func FinishAndSaveScan(hadErrors bool, f func(*Scan) error) error {
shelterCurrentScanLock.Lock()
defer shelterCurrentScanLock.Unlock()
if hadErrors {
shelterCurrentScan.Status = ScanStatusExecutedWithErrors
} else {
shelterCurrentScan.Status = ScanStatusExecuted
}
shelterCurrentScan.FinishedAt = time.Now()
// Save the scan
err := f(&shelterCurrentScan.Scan)
// Change the current scan state to prepare for the next scan
shelterCurrentScan = CurrentScan{
Scan: Scan{
Status: ScanStatusWaitingExecution,
NameserverStatistics: make(map[string]uint64),
DSStatistics: make(map[string]uint64),
},
LastModifiedAt: time.Now(),
}
// We only check the err after reseting the shelterCurrentScan variable because we want
// to change the variable even if we had an error
if err != nil {
return err
}
// Retrieve the scan next execution. We only do this here because we want to be the last
// thing from the method, avoiding that an error of this action prevent other actions to
// run
nextExecution, err := scheduler.NextExecutionByType(scheduler.JobTypeScan)
if err != nil {
// Didn't find a scan job in the scheduler, really strange! Return the error to report
// the problem (probably by log messages)
return err
}
shelterCurrentScan.ScheduledAt = nextExecution
return nil
}
// Function to fill current scan variable for the first time. Should run after the
// scheduler registered the scan job, to determinate the next execution time. Returns an
// error if this function is executed before the scheduler register the scan job
func InitializeCurrentScan() error {
shelterCurrentScanLock.Lock()
defer shelterCurrentScanLock.Unlock()
nextExecution, err := scheduler.NextExecutionByType(scheduler.JobTypeScan)
shelterCurrentScan = CurrentScan{
Scan: Scan{
Status: ScanStatusWaitingExecution,
NameserverStatistics: make(map[string]uint64),
DSStatistics: make(map[string]uint64),
},
ScheduledAt: nextExecution,
LastModifiedAt: time.Now(),
}
// If err from different from nil we didn't find a scan job in the scheduler! Propably
// this function was executed before the scheduler registered the scan job
return err
}