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This commit is contained in:
Simon Zolin 2019-10-21 19:49:56 +03:00
parent a52c4b4362
commit 67f31ccf43
1 changed files with 10 additions and 3 deletions
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13
home/filter.go
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@ -217,8 +217,12 @@ func refreshFilters() (int, error) {
// . For each filter run the download and checksum check operation // . For each filter run the download and checksum check operation
// . For each filter: // . For each filter:
// . If filter data hasn't changed, just set new update time on file // . If filter data hasn't changed, just set new update time on file
// . If filter data has changed: rename the old file, store the new data on disk // . If filter data has changed:
// . Pass new filters to dnsfilter object // . rename the old file (1.txt -> 1.txt.old)
// . store the new data on disk (1.txt)
// . Pass new filters to dnsfilter object - it analyzes new data while the old filters are still active
// . dnsfilter activates new filters
// . Remove the old filter files (1.txt.old)
func refreshFiltersIfNecessary(force bool) int { func refreshFiltersIfNecessary(force bool) int {
var updateFilters []filter var updateFilters []filter
var updateFlags []bool // 'true' if filter data has changed var updateFlags []bool // 'true' if filter data has changed
@ -431,7 +435,10 @@ func (filter *filter) save() error {
func (filter *filter) saveAndBackupOld() error { func (filter *filter) saveAndBackupOld() error {
filterFilePath := filter.Path() filterFilePath := filter.Path()
_ = os.Rename(filterFilePath, filterFilePath+".old") err := os.Rename(filterFilePath, filterFilePath+".old")
if err != nil {
return err
}
return filter.save() return filter.save()
} }