replace hpcloud/tail with nxadm/tail

The hpcloud is not maintained anymore.  nxadm is already part of the
dependency chain, so it won't add work for downstream packages.

While testing upcoming changes to the events-file backend, I noticed
that nxadm is shipping required fixes.

[NO NEW TESTS NEEDED]

Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

4 files changed, 0 insertions, 168 deletions

diff --git a/vendor/github.com/hpcloud/tail/ratelimiter/Licence b/vendor/github.com/hpcloud/tail/ratelimiter/Licence
deleted file mode 100644
index 434aab19f..000000000
--- a/vendor/github.com/hpcloud/tail/ratelimiter/Licence
+++ /dev/null
@@ -1,7 +0,0 @@
-Copyright (C) 2013 99designs
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/hpcloud/tail/ratelimiter/leakybucket.go b/vendor/github.com/hpcloud/tail/ratelimiter/leakybucket.go
deleted file mode 100644
index 358b69e7f..000000000
--- a/vendor/github.com/hpcloud/tail/ratelimiter/leakybucket.go
+++ /dev/null
@@ -1,97 +0,0 @@
-// Package ratelimiter implements the Leaky Bucket ratelimiting algorithm with memcached and in-memory backends.
-package ratelimiter
-
-import (
-	"time"
-)
-
-type LeakyBucket struct {
-	Size         uint16
-	Fill         float64
-	LeakInterval time.Duration // time.Duration for 1 unit of size to leak
-	Lastupdate   time.Time
-	Now          func() time.Time
-}
-
-func NewLeakyBucket(size uint16, leakInterval time.Duration) *LeakyBucket {
-	bucket := LeakyBucket{
-		Size:         size,
-		Fill:         0,
-		LeakInterval: leakInterval,
-		Now:          time.Now,
-		Lastupdate:   time.Now(),
-	}
-
-	return &bucket
-}
-
-func (b *LeakyBucket) updateFill() {
-	now := b.Now()
-	if b.Fill > 0 {
-		elapsed := now.Sub(b.Lastupdate)
-
-		b.Fill -= float64(elapsed) / float64(b.LeakInterval)
-		if b.Fill < 0 {
-			b.Fill = 0
-		}
-	}
-	b.Lastupdate = now
-}
-
-func (b *LeakyBucket) Pour(amount uint16) bool {
-	b.updateFill()
-
-	var newfill float64 = b.Fill + float64(amount)
-
-	if newfill > float64(b.Size) {
-		return false
-	}
-
-	b.Fill = newfill
-
-	return true
-}
-
-// The time at which this bucket will be completely drained
-func (b *LeakyBucket) DrainedAt() time.Time {
-	return b.Lastupdate.Add(time.Duration(b.Fill * float64(b.LeakInterval)))
-}
-
-// The duration until this bucket is completely drained
-func (b *LeakyBucket) TimeToDrain() time.Duration {
-	return b.DrainedAt().Sub(b.Now())
-}
-
-func (b *LeakyBucket) TimeSinceLastUpdate() time.Duration {
-	return b.Now().Sub(b.Lastupdate)
-}
-
-type LeakyBucketSer struct {
-	Size         uint16
-	Fill         float64
-	LeakInterval time.Duration // time.Duration for 1 unit of size to leak
-	Lastupdate   time.Time
-}
-
-func (b *LeakyBucket) Serialise() *LeakyBucketSer {
-	bucket := LeakyBucketSer{
-		Size:         b.Size,
-		Fill:         b.Fill,
-		LeakInterval: b.LeakInterval,
-		Lastupdate:   b.Lastupdate,
-	}
-
-	return &bucket
-}
-
-func (b *LeakyBucketSer) DeSerialise() *LeakyBucket {
-	bucket := LeakyBucket{
-		Size:         b.Size,
-		Fill:         b.Fill,
-		LeakInterval: b.LeakInterval,
-		Lastupdate:   b.Lastupdate,
-		Now:          time.Now,
-	}
-
-	return &bucket
-}
diff --git a/vendor/github.com/hpcloud/tail/ratelimiter/memory.go b/vendor/github.com/hpcloud/tail/ratelimiter/memory.go
deleted file mode 100644
index 8f6a5784a..000000000
--- a/vendor/github.com/hpcloud/tail/ratelimiter/memory.go
+++ /dev/null
@@ -1,58 +0,0 @@
-package ratelimiter
-
-import (
-	"errors"
-	"time"
-)
-
-const GC_SIZE int = 100
-
-type Memory struct {
-	store           map[string]LeakyBucket
-	lastGCCollected time.Time
-}
-
-func NewMemory() *Memory {
-	m := new(Memory)
-	m.store = make(map[string]LeakyBucket)
-	m.lastGCCollected = time.Now()
-	return m
-}
-
-func (m *Memory) GetBucketFor(key string) (*LeakyBucket, error) {
-
-	bucket, ok := m.store[key]
-	if !ok {
-		return nil, errors.New("miss")
-	}
-
-	return &bucket, nil
-}
-
-func (m *Memory) SetBucketFor(key string, bucket LeakyBucket) error {
-
-	if len(m.store) > GC_SIZE {
-		m.GarbageCollect()
-	}
-
-	m.store[key] = bucket
-
-	return nil
-}
-
-func (m *Memory) GarbageCollect() {
-	now := time.Now()
-
-	// rate limit GC to once per minute
-	if now.Add(60*time.Second).Unix() > m.lastGCCollected.Unix() {
-
-		for key, bucket := range m.store {
-			// if the bucket is drained, then GC
-			if bucket.DrainedAt().Unix() > now.Unix() {
-				delete(m.store, key)
-			}
-		}
-
-		m.lastGCCollected = now
-	}
-}
diff --git a/vendor/github.com/hpcloud/tail/ratelimiter/storage.go b/vendor/github.com/hpcloud/tail/ratelimiter/storage.go
deleted file mode 100644
index 89b2fe882..000000000
--- a/vendor/github.com/hpcloud/tail/ratelimiter/storage.go
+++ /dev/null
@@ -1,6 +0,0 @@
-package ratelimiter
-
-type Storage interface {
-	GetBucketFor(string) (*LeakyBucket, error)
-	SetBucketFor(string, LeakyBucket) error
-}