hashprefix

type EmptyMetrics struct{}

type Filter struct {
	// contains filtered or unexported fields
}

type FilterConfig struct {
	// Logger is used for logging the operation of the filter.
	Logger *slog.Logger

	// Cloner is used to clone messages taken from filtering-result cache.
	Cloner *dnsmsg.Cloner

	// CacheManager is the global cache manager.  CacheManager must not be nil.
	CacheManager agdcache.Manager

	// Hashes are the hostname hashes for this filter.
	Hashes *Storage

	// URL is the URL used to update the filter.
	URL *url.URL

	// ErrColl is used to collect non-critical and rare errors.
	ErrColl errcoll.Interface

	// HashPrefixMtcs are the specific metrics for the hashprefix filter.
	HashPrefixMtcs Metrics

	// Metrics are the metrics for the hashprefix filter.
	Metrics filter.Metrics

	// ID is the ID of this hash storage for logging and error reporting.
	ID filter.ID

	// CachePath is the path to the file containing the cached filtered
	// hostnames, one per line.
	CachePath string

	// ReplacementHost is the replacement host for this filter.  Queries matched
	// by the filter receive a response with the IP addresses of this host.  If
	// ReplacementHost contains a valid IP, that IP is used.  Otherwise, it
	// should be a valid domain name.
	ReplacementHost string

	// Staleness is the time after which a file is considered stale.
	Staleness time.Duration

	// CacheTTL is the time-to-live value used to cache the results of the
	// filter.
	//
	// TODO(a.garipov): Currently unused.  See AGDNS-398.
	CacheTTL time.Duration

	// RefreshTimeout is the timeout for the filter update operation.
	RefreshTimeout time.Duration

	// CacheCount is the count of the elements in the filter's result cache.
	CacheCount int

	// MaxSize is the maximum size of the downloadable rule-list.
	MaxSize datasize.ByteSize
}

type Matcher struct {
	// contains filtered or unexported fields
}

type Metrics interface {
	// IncrementLookups increments the number of lookups.  hit is true if the
	// lookup returned a value.
	IncrementLookups(ctx context.Context, hit bool)

	// UpdateCacheSize is called when the cache size is updated.
	UpdateCacheSize(ctx context.Context, cacheLen int)
}

type Prefix [PrefixLen]byte

type Storage struct {
	// contains filtered or unexported fields
}