Merge branch 'master' into docs

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+### 0.24.1 (2016-10-10)
+
+- Fix issue with running cAdvisor in a container on some distributions.
+
 ### 0.24.0 (2016-09-19)
 
 - Added host-level inode stats (total & available)

Makefile

@@ -23,6 +23,9 @@ test:
 test-integration:
 	@./build/integration.sh
 
+test-runner:
+	@$(GO) build github.com/google/cadvisor/integration/runner
+
 format:
 	@echo ">> formatting code"
 	@$(GO) fmt $(pkgs)

build/jenkins_e2e.sh

@@ -31,8 +31,11 @@ if [[ ! -z "$(git diff --name-only pages)" ]]; then
   exit 1
 fi
 
-make
-go build -tags test github.com/google/cadvisor/integration/runner
+# Build & test with go 1.7
+docker run --rm \
+       -w "/go/src/github.com/google/cadvisor" \
+       -v "${GOPATH}/src/github.com/google/cadvisor:/go/src/github.com/google/cadvisor" \
+       golang:1.7.1 make all test-runner
 
 # Nodes that are currently stable. When tests fail on a specific node, and the failure is not remedied within a week, that node will be removed from this list.
 golden_nodes=(

fs/fs.go

@@ -346,7 +346,7 @@ func (self *RealFsInfo) GetFsInfoForPath(mountSet map[string]struct{}) ([]Fs, er
 	return filesystems, nil
 }
 
-var partitionRegex = regexp.MustCompile(`^(?:(?:s|xv)d[a-z]+\d*|dm-\d+)$`)
+var partitionRegex = regexp.MustCompile(`^(?:(?:s|v|xv)d[a-z]+\d*|dm-\d+)$`)
 
 func getDiskStatsMap(diskStatsFile string) (map[string]DiskStats, error) {
 	diskStatsMap := make(map[string]DiskStats)

info/v2/conversion.go

@@ -119,6 +119,8 @@ func ContainerStatsFromV1(spec *v1.ContainerSpec, stats []*v1.ContainerStats) []
 		if spec.HasNetwork {
 			// TODO: Handle TcpStats
 			stat.Network = &NetworkStats{
+				Tcp:        TcpStat(val.Network.Tcp),
+				Tcp6:       TcpStat(val.Network.Tcp6),
 				Interfaces: val.Network.Interfaces,
 			}
 		}

utils/tail/tail.go

@@ -45,6 +45,16 @@ const (
 
 // NewTail starts opens the given file and watches it for deletion/rotation
 func NewTail(filename string) (*Tail, error) {
+	t, err := newTail(filename)
+	if err != nil {
+		return nil, err
+	}
+	go t.watchLoop()
+	return t, nil
+}
+
+// newTail creates a Tail object.
+func newTail(filename string) (*Tail, error) {
 	t := &Tail{
 		filename: filename,
 	}
@@ -54,7 +64,9 @@ func NewTail(filename string) (*Tail, error) {
 	if err != nil {
 		return nil, fmt.Errorf("inotify init failed on %s: %v", t.filename, err)
 	}
-	go t.watchLoop()
+	// Initialize readerErr as io.EOF, so that the reader can work properly
+	// during initialization.
+	t.readerErr = io.EOF
 	return t, nil
 }
 
@@ -62,23 +74,23 @@ func NewTail(filename string) (*Tail, error) {
 func (t *Tail) Read(p []byte) (int, error) {
 	t.readerLock.RLock()
 	defer t.readerLock.RUnlock()
-	if t.reader == nil || t.readerErr != nil {
+	if t.readerErr != nil {
 		return 0, t.readerErr
 	}
 	return t.reader.Read(p)
 }
 
-var _ io.Reader = &Tail{}
+var _ io.ReadCloser = &Tail{}
 
 // Close stops watching and closes the file
-func (t *Tail) Close() {
+func (t *Tail) Close() error {
 	close(t.stop)
+	return nil
 }
 
 func (t *Tail) attemptOpen() error {
 	t.readerLock.Lock()
 	defer t.readerLock.Unlock()
-	t.reader = nil
 	t.readerErr = nil
 	attempt := 0
 	for interval := defaultRetryInterval; ; interval *= 2 {

utils/tail/tail_test.go

@@ -0,0 +1,34 @@
+// Copyright 2016 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tail
+
+import (
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestReadNewTail(t *testing.T) {
+	// Read should return (0, io.EOF) before first
+	// attemptOpen.
+	tail, err := newTail("test/nonexist/file")
+	assert.NoError(t, err)
+	buf := make([]byte, 0, 100)
+	n, err := tail.Read(buf)
+	assert.Equal(t, n, 0)
+	assert.Equal(t, len(buf), 0)
+	assert.EqualError(t, err, io.EOF.Error())
+}