Update vendoring of prometheus/tsdb

vendor/github.com/prometheus/tsdb/chunks.go

@@ -170,6 +170,7 @@ func (w *chunkWriter) finalizeTail() error {
 	if err := tf.Truncate(off); err != nil {
 		return err
 	}
+
 	return tf.Close()
 }
 
@@ -276,7 +277,12 @@ func (w *chunkWriter) seq() int {
 }
 
 func (w *chunkWriter) Close() error {
-	return w.finalizeTail()
+	if err := w.finalizeTail(); err != nil {
+		return err
+	}
+
+	// close dir file (if not windows platform will fail on rename)
+	return w.dirFile.Close()
 }
 
 // ChunkReader provides reading access of serialized time series data.

vendor/github.com/prometheus/tsdb/compact.go

@@ -426,12 +426,22 @@ func (c *LeveledCompactor) write(dest string, meta *BlockMeta, blocks ...BlockRe
 	if err != nil {
 		return errors.Wrap(err, "open temporary block dir")
 	}
-	defer df.Close()
+	defer func() {
+		if df != nil {
+			df.Close()
+		}
+	}()
 
 	if err := fileutil.Fsync(df); err != nil {
 		return errors.Wrap(err, "sync temporary dir file")
 	}
 
+	// close temp dir before rename block dir(for windows platform)
+	if err = df.Close(); err != nil {
+		return errors.Wrap(err, "close temporary dir")
+	}
+	df = nil
+
 	// Block successfully written, make visible and remove old ones.
 	if err := renameFile(tmp, dir); err != nil {
 		return errors.Wrap(err, "rename block dir")

vendor/github.com/prometheus/tsdb/db_windows.go

@@ -21,8 +21,7 @@ import (
 
 func mmap(f *os.File, sz int) ([]byte, error) {
 	low, high := uint32(sz), uint32(sz>>32)
-
+	h, errno := syscall.CreateFileMapping(syscall.Handle(f.Fd()), nil, syscall.PAGE_READONLY, high, low, nil)
-	h, errno := syscall.CreateFileMapping(syscall.Handle(f.Fd()), nil, syscall.PAGE_READONLY, low, high, nil)
 	if h == 0 {
 		return nil, os.NewSyscallError("CreateFileMapping", errno)
 	}

vendor/github.com/prometheus/tsdb/head.go

@@ -142,7 +142,7 @@ func newHeadMetrics(h *Head, r prometheus.Registerer) *headMetrics {
 	})
 	m.samplesAppended = prometheus.NewCounter(prometheus.CounterOpts{
 		Name: "prometheus_tsdb_head_samples_appended_total",
-		Help: "Total number of appended sampledb.",
+		Help: "Total number of appended samples.",
 	})
 
 	if r != nil {

vendor/github.com/prometheus/tsdb/index.go

@@ -153,6 +153,8 @@ func newIndexWriter(dir string) (*indexWriter, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer df.Close() // close for flatform windows
+
 	f, err := os.OpenFile(filepath.Join(dir, indexFilename), os.O_CREATE|os.O_WRONLY, 0666)
 	if err != nil {
 		return nil, err

vendor/github.com/prometheus/tsdb/tombstones.go

@@ -49,7 +49,11 @@ func writeTombstoneFile(dir string, tr tombstoneReader) error {
 	if err != nil {
 		return err
 	}
-	defer f.Close()
+	defer func() {
+		if f != nil {
+			f.Close()
+		}
+	}()
 
 	buf := encbuf{b: make([]byte, 3*binary.MaxVarintLen64)}
 	buf.reset()
@@ -82,6 +86,10 @@ func writeTombstoneFile(dir string, tr tombstoneReader) error {
 		return err
 	}
 
+	if err = f.Close(); err != nil {
+		return err
+	}
+	f = nil
 	return renameFile(tmp, path)
 }
 

vendor/github.com/prometheus/tsdb/wal.go

@@ -190,6 +190,7 @@ type SegmentWAL struct {
 
 	stopc   chan struct{}
 	donec   chan struct{}
+	actorc  chan func() error // sequentialized background operations
 	buffers sync.Pool
 }
 
@@ -213,6 +214,7 @@ func OpenSegmentWAL(dir string, logger log.Logger, flushInterval time.Duration,
 		flushInterval: flushInterval,
 		donec:         make(chan struct{}),
 		stopc:         make(chan struct{}),
+		actorc:        make(chan func() error, 1),
 		segmentSize:   walSegmentSizeBytes,
 		crc32:         newCRC32(),
 	}
@@ -384,7 +386,7 @@ func (w *SegmentWAL) Truncate(mint int64, keep func(uint64) bool) error {
 		w.putBuffer(buf)
 
 		if err != nil {
-			return err
+			return errors.Wrap(err, "write to compaction segment")
 		}
 	}
 	if r.Err() != nil {
@@ -401,14 +403,15 @@ func (w *SegmentWAL) Truncate(mint int64, keep func(uint64) bool) error {
 	csf.Sync()
 	csf.Close()
 
+	candidates[0].Close() // need close before remove on platform windows
 	if err := renameFile(csf.Name(), candidates[0].Name()); err != nil {
-		return err
+		return errors.Wrap(err, "rename compaction segment")
 	}
 	for _, f := range candidates[1:] {
+		f.Close() // need close before remove on platform windows
 		if err := os.RemoveAll(f.Name()); err != nil {
 			return errors.Wrap(err, "delete WAL segment file")
 		}
-		f.Close()
 	}
 	if err := w.dirFile.Sync(); err != nil {
 		return err
@@ -522,6 +525,15 @@ func (w *SegmentWAL) openSegmentFile(name string) (*os.File, error) {
 	}
 	metab := make([]byte, 8)
 
+	// If there is an error, we need close f for platform windows before gc.
+	// Otherwise, file op may fail.
+	hasError := true
+	defer func() {
+		if hasError {
+			f.Close()
+		}
+	}()
+
 	if n, err := f.Read(metab); err != nil {
 		return nil, errors.Wrapf(err, "validate meta %q", f.Name())
 	} else if n != 8 {
@@ -534,6 +546,7 @@ func (w *SegmentWAL) openSegmentFile(name string) (*os.File, error) {
 	if metab[4] != WALFormatDefault {
 		return nil, errors.Errorf("unknown WAL segment format %d in %q", metab[4], f.Name())
 	}
+	hasError = false
 	return f, nil
 }
 
@@ -569,18 +582,21 @@ func (w *SegmentWAL) cut() error {
 		// Finish last segment asynchronously to not block the WAL moving along
 		// in the new segment.
 		go func() {
+			w.actorc <- func() error {
 				off, err := hf.Seek(0, os.SEEK_CUR)
 				if err != nil {
-				level.Error(w.logger).Log("msg", "finish old segment", "segment", hf.Name(), "err", err)
+					return errors.Wrapf(err, "finish old segment %s", hf.Name())
 				}
 				if err := hf.Truncate(off); err != nil {
-				level.Error(w.logger).Log("msg", "finish old segment", "segment", hf.Name(), "err", err)
+					return errors.Wrapf(err, "finish old segment %s", hf.Name())
 				}
 				if err := hf.Sync(); err != nil {
-				level.Error(w.logger).Log("msg", "finish old segment", "segment", hf.Name(), "err", err)
+					return errors.Wrapf(err, "finish old segment %s", hf.Name())
 				}
 				if err := hf.Close(); err != nil {
-				level.Error(w.logger).Log("msg", "finish old segment", "segment", hf.Name(), "err", err)
+					return errors.Wrapf(err, "finish old segment %s", hf.Name())
+				}
+				return nil
 			}
 		}()
 	}
@@ -595,8 +611,8 @@ func (w *SegmentWAL) cut() error {
 	}
 
 	go func() {
-		if err = w.dirFile.Sync(); err != nil {
+		w.actorc <- func() error {
-			level.Error(w.logger).Log("msg", "sync WAL directory", "err", err)
+			return errors.Wrap(w.dirFile.Sync(), "sync WAL directory")
 		}
 	}()
 
@@ -675,9 +691,23 @@ func (w *SegmentWAL) run(interval time.Duration) {
 	defer close(w.donec)
 
 	for {
+		// Processing all enqueued operations has precedence over shutdown and
+		// background syncs.
+		select {
+		case f := <-w.actorc:
+			if err := f(); err != nil {
+				level.Error(w.logger).Log("msg", "operation failed", "err", err)
+			}
+			continue
+		default:
+		}
 		select {
 		case <-w.stopc:
 			return
+		case f := <-w.actorc:
+			if err := f(); err != nil {
+				level.Error(w.logger).Log("msg", "operation failed", "err", err)
+			}
 		case <-tick:
 			if err := w.Sync(); err != nil {
 				level.Error(w.logger).Log("msg", "sync failed", "err", err)
@@ -702,7 +732,8 @@ func (w *SegmentWAL) Close() error {
 	if hf := w.head(); hf != nil {
 		return errors.Wrapf(hf.Close(), "closing WAL head %s", hf.Name())
 	}
-	return nil
+
+	return w.dirFile.Close()
 }
 
 const (

vendor/vendor.json

@@ -846,10 +846,10 @@
 			"revisionTime": "2016-04-11T19:08:41Z"
 		},
 		{
-			"checksumSHA1": "qbhdcw451oyIWXj+0zlkR+rDi9Y=",
+			"checksumSHA1": "MZoz9kpR5PSUM9mJLh3c7nSrk9c=",
 			"path": "github.com/prometheus/tsdb",
-			"revision": "5d28c849c7ff3b43e2829a44a9aac16468e076ce",
+			"revision": "b1df85781931b0ff48d09a364174016d16a4dc3e",
-			"revisionTime": "2017-10-25T14:52:11Z"
+			"revisionTime": "2017-11-01T17:11:22Z"
 		},
 		{
 			"checksumSHA1": "uy6ySJ6EZqof+yMD2wTkYob8BeU=",