podman logs: fix tailing

Fix issues with tailing of container logs as described
in issue #16.  Also add in the ability to use a duration or
known time stamp formats for the --since flag.

Signed-off-by: baude <bbaude@redhat.com>

Closes: #317
Approved by: mheon

1 files changed, 0 insertions, 118 deletions

diff --git a/vendor/github.com/hpcloud/tail/watch/polling.go b/vendor/github.com/hpcloud/tail/watch/polling.go
deleted file mode 100644
index 49491f21d..000000000
--- a/vendor/github.com/hpcloud/tail/watch/polling.go
+++ /dev/null
@@ -1,118 +0,0 @@
-// Copyright (c) 2015 HPE Software Inc. All rights reserved.
-// Copyright (c) 2013 ActiveState Software Inc. All rights reserved.
-
-package watch
-
-import (
-	"os"
-	"runtime"
-	"time"
-
-	"github.com/hpcloud/tail/util"
-	"gopkg.in/tomb.v1"
-)
-
-// PollingFileWatcher polls the file for changes.
-type PollingFileWatcher struct {
-	Filename string
-	Size     int64
-}
-
-func NewPollingFileWatcher(filename string) *PollingFileWatcher {
-	fw := &PollingFileWatcher{filename, 0}
-	return fw
-}
-
-var POLL_DURATION time.Duration
-
-func (fw *PollingFileWatcher) BlockUntilExists(t *tomb.Tomb) error {
-	for {
-		if _, err := os.Stat(fw.Filename); err == nil {
-			return nil
-		} else if !os.IsNotExist(err) {
-			return err
-		}
-		select {
-		case <-time.After(POLL_DURATION):
-			continue
-		case <-t.Dying():
-			return tomb.ErrDying
-		}
-	}
-	panic("unreachable")
-}
-
-func (fw *PollingFileWatcher) ChangeEvents(t *tomb.Tomb, pos int64) (*FileChanges, error) {
-	origFi, err := os.Stat(fw.Filename)
-	if err != nil {
-		return nil, err
-	}
-
-	changes := NewFileChanges()
-	var prevModTime time.Time
-
-	// XXX: use tomb.Tomb to cleanly manage these goroutines. replace
-	// the fatal (below) with tomb's Kill.
-
-	fw.Size = pos
-
-	go func() {
-		prevSize := fw.Size
-		for {
-			select {
-			case <-t.Dying():
-				return
-			default:
-			}
-
-			time.Sleep(POLL_DURATION)
-			fi, err := os.Stat(fw.Filename)
-			if err != nil {
-				// Windows cannot delete a file if a handle is still open (tail keeps one open)
-				// so it gives access denied to anything trying to read it until all handles are released.
-				if os.IsNotExist(err) || (runtime.GOOS == "windows" && os.IsPermission(err)) {
-					// File does not exist (has been deleted).
-					changes.NotifyDeleted()
-					return
-				}
-
-				// XXX: report this error back to the user
-				util.Fatal("Failed to stat file %v: %v", fw.Filename, err)
-			}
-
-			// File got moved/renamed?
-			if !os.SameFile(origFi, fi) {
-				changes.NotifyDeleted()
-				return
-			}
-
-			// File got truncated?
-			fw.Size = fi.Size()
-			if prevSize > 0 && prevSize > fw.Size {
-				changes.NotifyTruncated()
-				prevSize = fw.Size
-				continue
-			}
-			// File got bigger?
-			if prevSize > 0 && prevSize < fw.Size {
-				changes.NotifyModified()
-				prevSize = fw.Size
-				continue
-			}
-			prevSize = fw.Size
-
-			// File was appended to (changed)?
-			modTime := fi.ModTime()
-			if modTime != prevModTime {
-				prevModTime = modTime
-				changes.NotifyModified()
-			}
-		}
-	}()
-
-	return changes, nil
-}
-
-func init() {
-	POLL_DURATION = 250 * time.Millisecond
-}