logstore

type Backend interface {
	// Create returns a write sink for ref, replacing any existing object.
	Create(ref string) (io.WriteCloser, error)
	// Open returns the raw stored bytes for ref (still gzip-compressed when the
	// store compresses). ErrNotFound when the object is absent.
	Open(ref string) (io.ReadCloser, error)
	// Delete removes the object for ref. Absent is not an error.
	Delete(ref string) error
	// Sweep deletes every object last modified before cutoff and returns the
	// number removed.
	Sweep(cutoff time.Time) (int, error)
	// Name identifies the backend for logging (e.g. "filesystem").
	Name() string
}

type Config struct {
	// MaxBytes caps a single externalized log; past it the middle is dropped and
	// Truncated is set (0 = no cap).
	MaxBytes int64
	// TailBytes is the size of the bounded tail the store returns for the DB row.
	TailBytes int
	// Compress gzip-compresses objects at rest when true.
	Compress bool
	// RetentionDays is how long objects are kept by Sweep (0 = keep forever).
	RetentionDays int
}

type Result struct {
	Ref       string // object key (empty when the store is disabled)
	Bytes     int64  // uncompressed size actually stored
	Lines     int    // line count actually stored
	Truncated bool   // middle was dropped to honor MaxBytes
	Tail      string // bounded last slice for the DB LogTail column
}

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