You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@trafficcontrol.apache.org by ne...@apache.org on 2017/01/30 15:29:10 UTC
[04/19] incubator-trafficcontrol git commit: Move TM2 to
trafficcontrol/traffic_monitor_golang
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fen.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fen.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fen.go
new file mode 100644
index 0000000..ced39cb
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fen.go
@@ -0,0 +1,37 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build solaris
+
+package fsnotify
+
+import (
+ "errors"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+ Events chan Event
+ Errors chan error
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+ return nil, errors.New("FEN based watcher not yet supported for fsnotify\n")
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+ return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+ return nil
+}
+
+// Remove stops watching the the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+ return nil
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fsnotify.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fsnotify.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fsnotify.go
new file mode 100644
index 0000000..d1d39a0
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/fsnotify.go
@@ -0,0 +1,62 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !plan9
+
+// Package fsnotify provides a platform-independent interface for file system notifications.
+package fsnotify
+
+import (
+ "bytes"
+ "fmt"
+)
+
+// Event represents a single file system notification.
+type Event struct {
+ Name string // Relative path to the file or directory.
+ Op Op // File operation that triggered the event.
+}
+
+// Op describes a set of file operations.
+type Op uint32
+
+// These are the generalized file operations that can trigger a notification.
+const (
+ Create Op = 1 << iota
+ Write
+ Remove
+ Rename
+ Chmod
+)
+
+// String returns a string representation of the event in the form
+// "file: REMOVE|WRITE|..."
+func (e Event) String() string {
+ // Use a buffer for efficient string concatenation
+ var buffer bytes.Buffer
+
+ if e.Op&Create == Create {
+ buffer.WriteString("|CREATE")
+ }
+ if e.Op&Remove == Remove {
+ buffer.WriteString("|REMOVE")
+ }
+ if e.Op&Write == Write {
+ buffer.WriteString("|WRITE")
+ }
+ if e.Op&Rename == Rename {
+ buffer.WriteString("|RENAME")
+ }
+ if e.Op&Chmod == Chmod {
+ buffer.WriteString("|CHMOD")
+ }
+
+ // If buffer remains empty, return no event names
+ if buffer.Len() == 0 {
+ return fmt.Sprintf("%q: ", e.Name)
+ }
+
+ // Return a list of event names, with leading pipe character stripped
+ return fmt.Sprintf("%q: %s", e.Name, buffer.String()[1:])
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify.go
new file mode 100644
index 0000000..9700df5
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify.go
@@ -0,0 +1,325 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+ "errors"
+ "fmt"
+ "io"
+ "os"
+ "path/filepath"
+ "strings"
+ "sync"
+ "unsafe"
+
+ "golang.org/x/sys/unix"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+ Events chan Event
+ Errors chan error
+ mu sync.Mutex // Map access
+ cv *sync.Cond // sync removing on rm_watch with IN_IGNORE
+ fd int
+ poller *fdPoller
+ watches map[string]*watch // Map of inotify watches (key: path)
+ paths map[int]string // Map of watched paths (key: watch descriptor)
+ done chan struct{} // Channel for sending a "quit message" to the reader goroutine
+ doneResp chan struct{} // Channel to respond to Close
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+ // Create inotify fd
+ fd, errno := unix.InotifyInit()
+ if fd == -1 {
+ return nil, errno
+ }
+ // Create epoll
+ poller, err := newFdPoller(fd)
+ if err != nil {
+ unix.Close(fd)
+ return nil, err
+ }
+ w := &Watcher{
+ fd: fd,
+ poller: poller,
+ watches: make(map[string]*watch),
+ paths: make(map[int]string),
+ Events: make(chan Event),
+ Errors: make(chan error),
+ done: make(chan struct{}),
+ doneResp: make(chan struct{}),
+ }
+ w.cv = sync.NewCond(&w.mu)
+
+ go w.readEvents()
+ return w, nil
+}
+
+func (w *Watcher) isClosed() bool {
+ select {
+ case <-w.done:
+ return true
+ default:
+ return false
+ }
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+ if w.isClosed() {
+ return nil
+ }
+
+ // Send 'close' signal to goroutine, and set the Watcher to closed.
+ close(w.done)
+
+ // Wake up goroutine
+ w.poller.wake()
+
+ // Wait for goroutine to close
+ <-w.doneResp
+
+ return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+ name = filepath.Clean(name)
+ if w.isClosed() {
+ return errors.New("inotify instance already closed")
+ }
+
+ const agnosticEvents = unix.IN_MOVED_TO | unix.IN_MOVED_FROM |
+ unix.IN_CREATE | unix.IN_ATTRIB | unix.IN_MODIFY |
+ unix.IN_MOVE_SELF | unix.IN_DELETE | unix.IN_DELETE_SELF
+
+ var flags uint32 = agnosticEvents
+
+ w.mu.Lock()
+ watchEntry, found := w.watches[name]
+ w.mu.Unlock()
+ if found {
+ watchEntry.flags |= flags
+ flags |= unix.IN_MASK_ADD
+ }
+ wd, errno := unix.InotifyAddWatch(w.fd, name, flags)
+ if wd == -1 {
+ return errno
+ }
+
+ w.mu.Lock()
+ w.watches[name] = &watch{wd: uint32(wd), flags: flags}
+ w.paths[wd] = name
+ w.mu.Unlock()
+
+ return nil
+}
+
+// Remove stops watching the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+ name = filepath.Clean(name)
+
+ // Fetch the watch.
+ w.mu.Lock()
+ defer w.mu.Unlock()
+ watch, ok := w.watches[name]
+
+ // Remove it from inotify.
+ if !ok {
+ return fmt.Errorf("can't remove non-existent inotify watch for: %s", name)
+ }
+ // inotify_rm_watch will return EINVAL if the file has been deleted;
+ // the inotify will already have been removed.
+ // watches and pathes are deleted in ignoreLinux() implicitly and asynchronously
+ // by calling inotify_rm_watch() below. e.g. readEvents() goroutine receives IN_IGNORE
+ // so that EINVAL means that the wd is being rm_watch()ed or its file removed
+ // by another thread and we have not received IN_IGNORE event.
+ success, errno := unix.InotifyRmWatch(w.fd, watch.wd)
+ if success == -1 {
+ // TODO: Perhaps it's not helpful to return an error here in every case.
+ // the only two possible errors are:
+ // EBADF, which happens when w.fd is not a valid file descriptor of any kind.
+ // EINVAL, which is when fd is not an inotify descriptor or wd is not a valid watch descriptor.
+ // Watch descriptors are invalidated when they are removed explicitly or implicitly;
+ // explicitly by inotify_rm_watch, implicitly when the file they are watching is deleted.
+ return errno
+ }
+
+ // wait until ignoreLinux() deleting maps
+ exists := true
+ for exists {
+ w.cv.Wait()
+ _, exists = w.watches[name]
+ }
+
+ return nil
+}
+
+type watch struct {
+ wd uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall)
+ flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags)
+}
+
+// readEvents reads from the inotify file descriptor, converts the
+// received events into Event objects and sends them via the Events channel
+func (w *Watcher) readEvents() {
+ var (
+ buf [unix.SizeofInotifyEvent * 4096]byte // Buffer for a maximum of 4096 raw events
+ n int // Number of bytes read with read()
+ errno error // Syscall errno
+ ok bool // For poller.wait
+ )
+
+ defer close(w.doneResp)
+ defer close(w.Errors)
+ defer close(w.Events)
+ defer unix.Close(w.fd)
+ defer w.poller.close()
+
+ for {
+ // See if we have been closed.
+ if w.isClosed() {
+ return
+ }
+
+ ok, errno = w.poller.wait()
+ if errno != nil {
+ select {
+ case w.Errors <- errno:
+ case <-w.done:
+ return
+ }
+ continue
+ }
+
+ if !ok {
+ continue
+ }
+
+ n, errno = unix.Read(w.fd, buf[:])
+ // If a signal interrupted execution, see if we've been asked to close, and try again.
+ // http://man7.org/linux/man-pages/man7/signal.7.html :
+ // "Before Linux 3.8, reads from an inotify(7) file descriptor were not restartable"
+ if errno == unix.EINTR {
+ continue
+ }
+
+ // unix.Read might have been woken up by Close. If so, we're done.
+ if w.isClosed() {
+ return
+ }
+
+ if n < unix.SizeofInotifyEvent {
+ var err error
+ if n == 0 {
+ // If EOF is received. This should really never happen.
+ err = io.EOF
+ } else if n < 0 {
+ // If an error occurred while reading.
+ err = errno
+ } else {
+ // Read was too short.
+ err = errors.New("notify: short read in readEvents()")
+ }
+ select {
+ case w.Errors <- err:
+ case <-w.done:
+ return
+ }
+ continue
+ }
+
+ var offset uint32
+ // We don't know how many events we just read into the buffer
+ // While the offset points to at least one whole event...
+ for offset <= uint32(n-unix.SizeofInotifyEvent) {
+ // Point "raw" to the event in the buffer
+ raw := (*unix.InotifyEvent)(unsafe.Pointer(&buf[offset]))
+
+ mask := uint32(raw.Mask)
+ nameLen := uint32(raw.Len)
+ // If the event happened to the watched directory or the watched file, the kernel
+ // doesn't append the filename to the event, but we would like to always fill the
+ // the "Name" field with a valid filename. We retrieve the path of the watch from
+ // the "paths" map.
+ w.mu.Lock()
+ name := w.paths[int(raw.Wd)]
+ w.mu.Unlock()
+ if nameLen > 0 {
+ // Point "bytes" at the first byte of the filename
+ bytes := (*[unix.PathMax]byte)(unsafe.Pointer(&buf[offset+unix.SizeofInotifyEvent]))
+ // The filename is padded with NULL bytes. TrimRight() gets rid of those.
+ name += "/" + strings.TrimRight(string(bytes[0:nameLen]), "\000")
+ }
+
+ event := newEvent(name, mask)
+
+ // Send the events that are not ignored on the events channel
+ if !event.ignoreLinux(w, raw.Wd, mask) {
+ select {
+ case w.Events <- event:
+ case <-w.done:
+ return
+ }
+ }
+
+ // Move to the next event in the buffer
+ offset += unix.SizeofInotifyEvent + nameLen
+ }
+ }
+}
+
+// Certain types of events can be "ignored" and not sent over the Events
+// channel. Such as events marked ignore by the kernel, or MODIFY events
+// against files that do not exist.
+func (e *Event) ignoreLinux(w *Watcher, wd int32, mask uint32) bool {
+ // Ignore anything the inotify API says to ignore
+ if mask&unix.IN_IGNORED == unix.IN_IGNORED {
+ w.mu.Lock()
+ defer w.mu.Unlock()
+ name := w.paths[int(wd)]
+ delete(w.paths, int(wd))
+ delete(w.watches, name)
+ w.cv.Broadcast()
+ return true
+ }
+
+ // If the event is not a DELETE or RENAME, the file must exist.
+ // Otherwise the event is ignored.
+ // *Note*: this was put in place because it was seen that a MODIFY
+ // event was sent after the DELETE. This ignores that MODIFY and
+ // assumes a DELETE will come or has come if the file doesn't exist.
+ if !(e.Op&Remove == Remove || e.Op&Rename == Rename) {
+ _, statErr := os.Lstat(e.Name)
+ return os.IsNotExist(statErr)
+ }
+ return false
+}
+
+// newEvent returns an platform-independent Event based on an inotify mask.
+func newEvent(name string, mask uint32) Event {
+ e := Event{Name: name}
+ if mask&unix.IN_CREATE == unix.IN_CREATE || mask&unix.IN_MOVED_TO == unix.IN_MOVED_TO {
+ e.Op |= Create
+ }
+ if mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF || mask&unix.IN_DELETE == unix.IN_DELETE {
+ e.Op |= Remove
+ }
+ if mask&unix.IN_MODIFY == unix.IN_MODIFY {
+ e.Op |= Write
+ }
+ if mask&unix.IN_MOVE_SELF == unix.IN_MOVE_SELF || mask&unix.IN_MOVED_FROM == unix.IN_MOVED_FROM {
+ e.Op |= Rename
+ }
+ if mask&unix.IN_ATTRIB == unix.IN_ATTRIB {
+ e.Op |= Chmod
+ }
+ return e
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller.go
new file mode 100644
index 0000000..cc7db4b
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller.go
@@ -0,0 +1,187 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+ "errors"
+
+ "golang.org/x/sys/unix"
+)
+
+type fdPoller struct {
+ fd int // File descriptor (as returned by the inotify_init() syscall)
+ epfd int // Epoll file descriptor
+ pipe [2]int // Pipe for waking up
+}
+
+func emptyPoller(fd int) *fdPoller {
+ poller := new(fdPoller)
+ poller.fd = fd
+ poller.epfd = -1
+ poller.pipe[0] = -1
+ poller.pipe[1] = -1
+ return poller
+}
+
+// Create a new inotify poller.
+// This creates an inotify handler, and an epoll handler.
+func newFdPoller(fd int) (*fdPoller, error) {
+ var errno error
+ poller := emptyPoller(fd)
+ defer func() {
+ if errno != nil {
+ poller.close()
+ }
+ }()
+ poller.fd = fd
+
+ // Create epoll fd
+ poller.epfd, errno = unix.EpollCreate1(0)
+ if poller.epfd == -1 {
+ return nil, errno
+ }
+ // Create pipe; pipe[0] is the read end, pipe[1] the write end.
+ errno = unix.Pipe2(poller.pipe[:], unix.O_NONBLOCK)
+ if errno != nil {
+ return nil, errno
+ }
+
+ // Register inotify fd with epoll
+ event := unix.EpollEvent{
+ Fd: int32(poller.fd),
+ Events: unix.EPOLLIN,
+ }
+ errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.fd, &event)
+ if errno != nil {
+ return nil, errno
+ }
+
+ // Register pipe fd with epoll
+ event = unix.EpollEvent{
+ Fd: int32(poller.pipe[0]),
+ Events: unix.EPOLLIN,
+ }
+ errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.pipe[0], &event)
+ if errno != nil {
+ return nil, errno
+ }
+
+ return poller, nil
+}
+
+// Wait using epoll.
+// Returns true if something is ready to be read,
+// false if there is not.
+func (poller *fdPoller) wait() (bool, error) {
+ // 3 possible events per fd, and 2 fds, makes a maximum of 6 events.
+ // I don't know whether epoll_wait returns the number of events returned,
+ // or the total number of events ready.
+ // I decided to catch both by making the buffer one larger than the maximum.
+ events := make([]unix.EpollEvent, 7)
+ for {
+ n, errno := unix.EpollWait(poller.epfd, events, -1)
+ if n == -1 {
+ if errno == unix.EINTR {
+ continue
+ }
+ return false, errno
+ }
+ if n == 0 {
+ // If there are no events, try again.
+ continue
+ }
+ if n > 6 {
+ // This should never happen. More events were returned than should be possible.
+ return false, errors.New("epoll_wait returned more events than I know what to do with")
+ }
+ ready := events[:n]
+ epollhup := false
+ epollerr := false
+ epollin := false
+ for _, event := range ready {
+ if event.Fd == int32(poller.fd) {
+ if event.Events&unix.EPOLLHUP != 0 {
+ // This should not happen, but if it does, treat it as a wakeup.
+ epollhup = true
+ }
+ if event.Events&unix.EPOLLERR != 0 {
+ // If an error is waiting on the file descriptor, we should pretend
+ // something is ready to read, and let unix.Read pick up the error.
+ epollerr = true
+ }
+ if event.Events&unix.EPOLLIN != 0 {
+ // There is data to read.
+ epollin = true
+ }
+ }
+ if event.Fd == int32(poller.pipe[0]) {
+ if event.Events&unix.EPOLLHUP != 0 {
+ // Write pipe descriptor was closed, by us. This means we're closing down the
+ // watcher, and we should wake up.
+ }
+ if event.Events&unix.EPOLLERR != 0 {
+ // If an error is waiting on the pipe file descriptor.
+ // This is an absolute mystery, and should never ever happen.
+ return false, errors.New("Error on the pipe descriptor.")
+ }
+ if event.Events&unix.EPOLLIN != 0 {
+ // This is a regular wakeup, so we have to clear the buffer.
+ err := poller.clearWake()
+ if err != nil {
+ return false, err
+ }
+ }
+ }
+ }
+
+ if epollhup || epollerr || epollin {
+ return true, nil
+ }
+ return false, nil
+ }
+}
+
+// Close the write end of the poller.
+func (poller *fdPoller) wake() error {
+ buf := make([]byte, 1)
+ n, errno := unix.Write(poller.pipe[1], buf)
+ if n == -1 {
+ if errno == unix.EAGAIN {
+ // Buffer is full, poller will wake.
+ return nil
+ }
+ return errno
+ }
+ return nil
+}
+
+func (poller *fdPoller) clearWake() error {
+ // You have to be woken up a LOT in order to get to 100!
+ buf := make([]byte, 100)
+ n, errno := unix.Read(poller.pipe[0], buf)
+ if n == -1 {
+ if errno == unix.EAGAIN {
+ // Buffer is empty, someone else cleared our wake.
+ return nil
+ }
+ return errno
+ }
+ return nil
+}
+
+// Close all poller file descriptors, but not the one passed to it.
+func (poller *fdPoller) close() {
+ if poller.pipe[1] != -1 {
+ unix.Close(poller.pipe[1])
+ }
+ if poller.pipe[0] != -1 {
+ unix.Close(poller.pipe[0])
+ }
+ if poller.epfd != -1 {
+ unix.Close(poller.epfd)
+ }
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller_test.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller_test.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller_test.go
new file mode 100644
index 0000000..26623ef
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_poller_test.go
@@ -0,0 +1,229 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+)
+
+type testFd [2]int
+
+func makeTestFd(t *testing.T) testFd {
+ var tfd testFd
+ errno := unix.Pipe(tfd[:])
+ if errno != nil {
+ t.Fatalf("Failed to create pipe: %v", errno)
+ }
+ return tfd
+}
+
+func (tfd testFd) fd() int {
+ return tfd[0]
+}
+
+func (tfd testFd) closeWrite(t *testing.T) {
+ errno := unix.Close(tfd[1])
+ if errno != nil {
+ t.Fatalf("Failed to close write end of pipe: %v", errno)
+ }
+}
+
+func (tfd testFd) put(t *testing.T) {
+ buf := make([]byte, 10)
+ _, errno := unix.Write(tfd[1], buf)
+ if errno != nil {
+ t.Fatalf("Failed to write to pipe: %v", errno)
+ }
+}
+
+func (tfd testFd) get(t *testing.T) {
+ buf := make([]byte, 10)
+ _, errno := unix.Read(tfd[0], buf)
+ if errno != nil {
+ t.Fatalf("Failed to read from pipe: %v", errno)
+ }
+}
+
+func (tfd testFd) close() {
+ unix.Close(tfd[1])
+ unix.Close(tfd[0])
+}
+
+func makePoller(t *testing.T) (testFd, *fdPoller) {
+ tfd := makeTestFd(t)
+ poller, err := newFdPoller(tfd.fd())
+ if err != nil {
+ t.Fatalf("Failed to create poller: %v", err)
+ }
+ return tfd, poller
+}
+
+func TestPollerWithBadFd(t *testing.T) {
+ _, err := newFdPoller(-1)
+ if err != unix.EBADF {
+ t.Fatalf("Expected EBADF, got: %v", err)
+ }
+}
+
+func TestPollerWithData(t *testing.T) {
+ tfd, poller := makePoller(t)
+ defer tfd.close()
+ defer poller.close()
+
+ tfd.put(t)
+ ok, err := poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ if !ok {
+ t.Fatalf("expected poller to return true")
+ }
+ tfd.get(t)
+}
+
+func TestPollerWithWakeup(t *testing.T) {
+ tfd, poller := makePoller(t)
+ defer tfd.close()
+ defer poller.close()
+
+ err := poller.wake()
+ if err != nil {
+ t.Fatalf("wake failed: %v", err)
+ }
+ ok, err := poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ if ok {
+ t.Fatalf("expected poller to return false")
+ }
+}
+
+func TestPollerWithClose(t *testing.T) {
+ tfd, poller := makePoller(t)
+ defer tfd.close()
+ defer poller.close()
+
+ tfd.closeWrite(t)
+ ok, err := poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ if !ok {
+ t.Fatalf("expected poller to return true")
+ }
+}
+
+func TestPollerWithWakeupAndData(t *testing.T) {
+ tfd, poller := makePoller(t)
+ defer tfd.close()
+ defer poller.close()
+
+ tfd.put(t)
+ err := poller.wake()
+ if err != nil {
+ t.Fatalf("wake failed: %v", err)
+ }
+
+ // both data and wakeup
+ ok, err := poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ if !ok {
+ t.Fatalf("expected poller to return true")
+ }
+
+ // data is still in the buffer, wakeup is cleared
+ ok, err = poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ if !ok {
+ t.Fatalf("expected poller to return true")
+ }
+
+ tfd.get(t)
+ // data is gone, only wakeup now
+ err = poller.wake()
+ if err != nil {
+ t.Fatalf("wake failed: %v", err)
+ }
+ ok, err = poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ if ok {
+ t.Fatalf("expected poller to return false")
+ }
+}
+
+func TestPollerConcurrent(t *testing.T) {
+ tfd, poller := makePoller(t)
+ defer tfd.close()
+ defer poller.close()
+
+ oks := make(chan bool)
+ live := make(chan bool)
+ defer close(live)
+ go func() {
+ defer close(oks)
+ for {
+ ok, err := poller.wait()
+ if err != nil {
+ t.Fatalf("poller failed: %v", err)
+ }
+ oks <- ok
+ if !<-live {
+ return
+ }
+ }
+ }()
+
+ // Try a write
+ select {
+ case <-time.After(50 * time.Millisecond):
+ case <-oks:
+ t.Fatalf("poller did not wait")
+ }
+ tfd.put(t)
+ if !<-oks {
+ t.Fatalf("expected true")
+ }
+ tfd.get(t)
+ live <- true
+
+ // Try a wakeup
+ select {
+ case <-time.After(50 * time.Millisecond):
+ case <-oks:
+ t.Fatalf("poller did not wait")
+ }
+ err := poller.wake()
+ if err != nil {
+ t.Fatalf("wake failed: %v", err)
+ }
+ if <-oks {
+ t.Fatalf("expected false")
+ }
+ live <- true
+
+ // Try a close
+ select {
+ case <-time.After(50 * time.Millisecond):
+ case <-oks:
+ t.Fatalf("poller did not wait")
+ }
+ tfd.closeWrite(t)
+ if !<-oks {
+ t.Fatalf("expected true")
+ }
+ tfd.get(t)
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_test.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_test.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_test.go
new file mode 100644
index 0000000..2527cad
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/inotify_test.go
@@ -0,0 +1,344 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+ "fmt"
+ "os"
+ "path/filepath"
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+)
+
+func TestInotifyCloseRightAway(t *testing.T) {
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher")
+ }
+
+ // Close immediately; it won't even reach the first unix.Read.
+ w.Close()
+
+ // Wait for the close to complete.
+ <-time.After(50 * time.Millisecond)
+ isWatcherReallyClosed(t, w)
+}
+
+func TestInotifyCloseSlightlyLater(t *testing.T) {
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher")
+ }
+
+ // Wait until readEvents has reached unix.Read, and Close.
+ <-time.After(50 * time.Millisecond)
+ w.Close()
+
+ // Wait for the close to complete.
+ <-time.After(50 * time.Millisecond)
+ isWatcherReallyClosed(t, w)
+}
+
+func TestInotifyCloseSlightlyLaterWithWatch(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher")
+ }
+ w.Add(testDir)
+
+ // Wait until readEvents has reached unix.Read, and Close.
+ <-time.After(50 * time.Millisecond)
+ w.Close()
+
+ // Wait for the close to complete.
+ <-time.After(50 * time.Millisecond)
+ isWatcherReallyClosed(t, w)
+}
+
+func TestInotifyCloseAfterRead(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher")
+ }
+
+ err = w.Add(testDir)
+ if err != nil {
+ t.Fatalf("Failed to add .")
+ }
+
+ // Generate an event.
+ os.Create(filepath.Join(testDir, "somethingSOMETHINGsomethingSOMETHING"))
+
+ // Wait for readEvents to read the event, then close the watcher.
+ <-time.After(50 * time.Millisecond)
+ w.Close()
+
+ // Wait for the close to complete.
+ <-time.After(50 * time.Millisecond)
+ isWatcherReallyClosed(t, w)
+}
+
+func isWatcherReallyClosed(t *testing.T, w *Watcher) {
+ select {
+ case err, ok := <-w.Errors:
+ if ok {
+ t.Fatalf("w.Errors is not closed; readEvents is still alive after closing (error: %v)", err)
+ }
+ default:
+ t.Fatalf("w.Errors would have blocked; readEvents is still alive!")
+ }
+
+ select {
+ case _, ok := <-w.Events:
+ if ok {
+ t.Fatalf("w.Events is not closed; readEvents is still alive after closing")
+ }
+ default:
+ t.Fatalf("w.Events would have blocked; readEvents is still alive!")
+ }
+}
+
+func TestInotifyCloseCreate(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher: %v", err)
+ }
+ defer w.Close()
+
+ err = w.Add(testDir)
+ if err != nil {
+ t.Fatalf("Failed to add testDir: %v", err)
+ }
+ h, err := os.Create(filepath.Join(testDir, "testfile"))
+ if err != nil {
+ t.Fatalf("Failed to create file in testdir: %v", err)
+ }
+ h.Close()
+ select {
+ case _ = <-w.Events:
+ case err := <-w.Errors:
+ t.Fatalf("Error from watcher: %v", err)
+ case <-time.After(50 * time.Millisecond):
+ t.Fatalf("Took too long to wait for event")
+ }
+
+ // At this point, we've received one event, so the goroutine is ready.
+ // It's also blocking on unix.Read.
+ // Now we try to swap the file descriptor under its nose.
+ w.Close()
+ w, err = NewWatcher()
+ defer w.Close()
+ if err != nil {
+ t.Fatalf("Failed to create second watcher: %v", err)
+ }
+
+ <-time.After(50 * time.Millisecond)
+ err = w.Add(testDir)
+ if err != nil {
+ t.Fatalf("Error adding testDir again: %v", err)
+ }
+}
+
+func TestInotifyStress(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+ testFile := filepath.Join(testDir, "testfile")
+
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher: %v", err)
+ }
+ defer w.Close()
+
+ killchan := make(chan struct{})
+ defer close(killchan)
+
+ err = w.Add(testDir)
+ if err != nil {
+ t.Fatalf("Failed to add testDir: %v", err)
+ }
+
+ proc, err := os.FindProcess(os.Getpid())
+ if err != nil {
+ t.Fatalf("Error finding process: %v", err)
+ }
+
+ go func() {
+ for {
+ select {
+ case <-time.After(5 * time.Millisecond):
+ err := proc.Signal(unix.SIGUSR1)
+ if err != nil {
+ t.Fatalf("Signal failed: %v", err)
+ }
+ case <-killchan:
+ return
+ }
+ }
+ }()
+
+ go func() {
+ for {
+ select {
+ case <-time.After(11 * time.Millisecond):
+ err := w.poller.wake()
+ if err != nil {
+ t.Fatalf("Wake failed: %v", err)
+ }
+ case <-killchan:
+ return
+ }
+ }
+ }()
+
+ go func() {
+ for {
+ select {
+ case <-killchan:
+ return
+ default:
+ handle, err := os.Create(testFile)
+ if err != nil {
+ t.Fatalf("Create failed: %v", err)
+ }
+ handle.Close()
+ time.Sleep(time.Millisecond)
+ err = os.Remove(testFile)
+ if err != nil {
+ t.Fatalf("Remove failed: %v", err)
+ }
+ }
+ }
+ }()
+
+ creates := 0
+ removes := 0
+ after := time.After(5 * time.Second)
+ for {
+ select {
+ case <-after:
+ if creates-removes > 1 || creates-removes < -1 {
+ t.Fatalf("Creates and removes should not be off by more than one: %d creates, %d removes", creates, removes)
+ }
+ if creates < 50 {
+ t.Fatalf("Expected at least 50 creates, got %d", creates)
+ }
+ return
+ case err := <-w.Errors:
+ t.Fatalf("Got an error from watcher: %v", err)
+ case evt := <-w.Events:
+ if evt.Name != testFile {
+ t.Fatalf("Got an event for an unknown file: %s", evt.Name)
+ }
+ if evt.Op == Create {
+ creates++
+ }
+ if evt.Op == Remove {
+ removes++
+ }
+ }
+ }
+}
+
+func TestInotifyRemoveTwice(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+ testFile := filepath.Join(testDir, "testfile")
+
+ handle, err := os.Create(testFile)
+ if err != nil {
+ t.Fatalf("Create failed: %v", err)
+ }
+ handle.Close()
+
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher: %v", err)
+ }
+ defer w.Close()
+
+ err = w.Add(testFile)
+ if err != nil {
+ t.Fatalf("Failed to add testFile: %v", err)
+ }
+
+ err = os.Remove(testFile)
+ if err != nil {
+ t.Fatalf("Failed to remove testFile: %v", err)
+ }
+
+ err = w.Remove(testFile)
+ if err == nil {
+ t.Fatalf("no error on removing invalid file")
+ }
+ s1 := fmt.Sprintf("%s", err)
+
+ err = w.Remove(testFile)
+ if err == nil {
+ t.Fatalf("no error on removing invalid file")
+ }
+ s2 := fmt.Sprintf("%s", err)
+
+ if s1 != s2 {
+ t.Fatalf("receive different error - %s / %s", s1, s2)
+ }
+}
+
+func TestInotifyInnerMapLength(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+ testFile := filepath.Join(testDir, "testfile")
+
+ handle, err := os.Create(testFile)
+ if err != nil {
+ t.Fatalf("Create failed: %v", err)
+ }
+ handle.Close()
+
+ w, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("Failed to create watcher: %v", err)
+ }
+ defer w.Close()
+
+ err = w.Add(testFile)
+ if err != nil {
+ t.Fatalf("Failed to add testFile: %v", err)
+ }
+ go func() {
+ for err := range w.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ err = os.Remove(testFile)
+ if err != nil {
+ t.Fatalf("Failed to remove testFile: %v", err)
+ }
+ _ = <-w.Events // consume Remove event
+ <-time.After(50 * time.Millisecond) // wait IN_IGNORE propagated
+
+ w.mu.Lock()
+ defer w.mu.Unlock()
+ if len(w.watches) != 0 {
+ t.Fatalf("Expected watches len is 0, but got: %d, %v", len(w.watches), w.watches)
+ }
+ if len(w.paths) != 0 {
+ t.Fatalf("Expected paths len is 0, but got: %d, %v", len(w.paths), w.paths)
+ }
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_darwin_test.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_darwin_test.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_darwin_test.go
new file mode 100644
index 0000000..5564554
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_darwin_test.go
@@ -0,0 +1,147 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package fsnotify
+
+import (
+ "os"
+ "path/filepath"
+ "testing"
+ "time"
+
+ "golang.org/x/sys/unix"
+)
+
+// testExchangedataForWatcher tests the watcher with the exchangedata operation on OS X.
+//
+// This is widely used for atomic saves on OS X, e.g. TextMate and in Apple's NSDocument.
+//
+// See https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man2/exchangedata.2.html
+// Also see: https://github.com/textmate/textmate/blob/cd016be29489eba5f3c09b7b70b06da134dda550/Frameworks/io/src/swap_file_data.cc#L20
+func testExchangedataForWatcher(t *testing.T, watchDir bool) {
+ // Create directory to watch
+ testDir1 := tempMkdir(t)
+
+ // For the intermediate file
+ testDir2 := tempMkdir(t)
+
+ defer os.RemoveAll(testDir1)
+ defer os.RemoveAll(testDir2)
+
+ resolvedFilename := "TestFsnotifyEvents.file"
+
+ // TextMate does:
+ //
+ // 1. exchangedata (intermediate, resolved)
+ // 2. unlink intermediate
+ //
+ // Let's try to simulate that:
+ resolved := filepath.Join(testDir1, resolvedFilename)
+ intermediate := filepath.Join(testDir2, resolvedFilename+"~")
+
+ // Make sure we create the file before we start watching
+ createAndSyncFile(t, resolved)
+
+ watcher := newWatcher(t)
+
+ // Test both variants in isolation
+ if watchDir {
+ addWatch(t, watcher, testDir1)
+ } else {
+ addWatch(t, watcher, resolved)
+ }
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var removeReceived counter
+ var createReceived counter
+
+ done := make(chan bool)
+
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(resolved) {
+ if event.Op&Remove == Remove {
+ removeReceived.increment()
+ }
+ if event.Op&Create == Create {
+ createReceived.increment()
+ }
+ }
+ t.Logf("event received: %s", event)
+ }
+ done <- true
+ }()
+
+ // Repeat to make sure the watched file/directory "survives" the REMOVE/CREATE loop.
+ for i := 1; i <= 3; i++ {
+ // The intermediate file is created in a folder outside the watcher
+ createAndSyncFile(t, intermediate)
+
+ // 1. Swap
+ if err := unix.Exchangedata(intermediate, resolved, 0); err != nil {
+ t.Fatalf("[%d] exchangedata failed: %s", i, err)
+ }
+
+ time.Sleep(50 * time.Millisecond)
+
+ // 2. Delete the intermediate file
+ err := os.Remove(intermediate)
+
+ if err != nil {
+ t.Fatalf("[%d] remove %s failed: %s", i, intermediate, err)
+ }
+
+ time.Sleep(50 * time.Millisecond)
+
+ }
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+
+ // The events will be (CHMOD + REMOVE + CREATE) X 2. Let's focus on the last two:
+ if removeReceived.value() < 3 {
+ t.Fatal("fsnotify remove events have not been received after 500 ms")
+ }
+
+ if createReceived.value() < 3 {
+ t.Fatal("fsnotify create events have not been received after 500 ms")
+ }
+
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+}
+
+// TestExchangedataInWatchedDir test exchangedata operation on file in watched dir.
+func TestExchangedataInWatchedDir(t *testing.T) {
+ testExchangedataForWatcher(t, true)
+}
+
+// TestExchangedataInWatchedDir test exchangedata operation on watched file.
+func TestExchangedataInWatchedFile(t *testing.T) {
+ testExchangedataForWatcher(t, false)
+}
+
+func createAndSyncFile(t *testing.T, filepath string) {
+ f1, err := os.OpenFile(filepath, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating %s failed: %s", filepath, err)
+ }
+ f1.Sync()
+ f1.Close()
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_test.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_test.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_test.go
new file mode 100644
index 0000000..8b7e9d3
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/integration_test.go
@@ -0,0 +1,1237 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !plan9,!solaris
+
+package fsnotify
+
+import (
+ "io/ioutil"
+ "os"
+ "os/exec"
+ "path"
+ "path/filepath"
+ "runtime"
+ "sync/atomic"
+ "testing"
+ "time"
+)
+
+// An atomic counter
+type counter struct {
+ val int32
+}
+
+func (c *counter) increment() {
+ atomic.AddInt32(&c.val, 1)
+}
+
+func (c *counter) value() int32 {
+ return atomic.LoadInt32(&c.val)
+}
+
+func (c *counter) reset() {
+ atomic.StoreInt32(&c.val, 0)
+}
+
+// tempMkdir makes a temporary directory
+func tempMkdir(t *testing.T) string {
+ dir, err := ioutil.TempDir("", "fsnotify")
+ if err != nil {
+ t.Fatalf("failed to create test directory: %s", err)
+ }
+ return dir
+}
+
+// tempMkFile makes a temporary file.
+func tempMkFile(t *testing.T, dir string) string {
+ f, err := ioutil.TempFile(dir, "fsnotify")
+ if err != nil {
+ t.Fatalf("failed to create test file: %v", err)
+ }
+ defer f.Close()
+ return f.Name()
+}
+
+// newWatcher initializes an fsnotify Watcher instance.
+func newWatcher(t *testing.T) *Watcher {
+ watcher, err := NewWatcher()
+ if err != nil {
+ t.Fatalf("NewWatcher() failed: %s", err)
+ }
+ return watcher
+}
+
+// addWatch adds a watch for a directory
+func addWatch(t *testing.T, watcher *Watcher, dir string) {
+ if err := watcher.Add(dir); err != nil {
+ t.Fatalf("watcher.Add(%q) failed: %s", dir, err)
+ }
+}
+
+func TestFsnotifyMultipleOperations(t *testing.T) {
+ watcher := newWatcher(t)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create directory that's not watched
+ testDirToMoveFiles := tempMkdir(t)
+ defer os.RemoveAll(testDirToMoveFiles)
+
+ testFile := filepath.Join(testDir, "TestFsnotifySeq.testfile")
+ testFileRenamed := filepath.Join(testDirToMoveFiles, "TestFsnotifySeqRename.testfile")
+
+ addWatch(t, watcher, testDir)
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var createReceived, modifyReceived, deleteReceived, renameReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) {
+ t.Logf("event received: %s", event)
+ if event.Op&Remove == Remove {
+ deleteReceived.increment()
+ }
+ if event.Op&Write == Write {
+ modifyReceived.increment()
+ }
+ if event.Op&Create == Create {
+ createReceived.increment()
+ }
+ if event.Op&Rename == Rename {
+ renameReceived.increment()
+ }
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ time.Sleep(time.Millisecond)
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ if err := testRename(testFile, testFileRenamed); err != nil {
+ t.Fatalf("rename failed: %s", err)
+ }
+
+ // Modify the file outside of the watched dir
+ f, err = os.Open(testFileRenamed)
+ if err != nil {
+ t.Fatalf("open test renamed file failed: %s", err)
+ }
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ // Recreate the file that was moved
+ f, err = os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Close()
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ cReceived := createReceived.value()
+ if cReceived != 2 {
+ t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 2)
+ }
+ mReceived := modifyReceived.value()
+ if mReceived != 1 {
+ t.Fatalf("incorrect number of modify events received after 500 ms (%d vs %d)", mReceived, 1)
+ }
+ dReceived := deleteReceived.value()
+ rReceived := renameReceived.value()
+ if dReceived+rReceived != 1 {
+ t.Fatalf("incorrect number of rename+delete events received after 500 ms (%d vs %d)", rReceived+dReceived, 1)
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+}
+
+func TestFsnotifyMultipleCreates(t *testing.T) {
+ watcher := newWatcher(t)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ testFile := filepath.Join(testDir, "TestFsnotifySeq.testfile")
+
+ addWatch(t, watcher, testDir)
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var createReceived, modifyReceived, deleteReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) {
+ t.Logf("event received: %s", event)
+ if event.Op&Remove == Remove {
+ deleteReceived.increment()
+ }
+ if event.Op&Create == Create {
+ createReceived.increment()
+ }
+ if event.Op&Write == Write {
+ modifyReceived.increment()
+ }
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ time.Sleep(time.Millisecond)
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ os.Remove(testFile)
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ // Recreate the file
+ f, err = os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Close()
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ // Modify
+ f, err = os.OpenFile(testFile, os.O_WRONLY, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ time.Sleep(time.Millisecond)
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ // Modify
+ f, err = os.OpenFile(testFile, os.O_WRONLY, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ time.Sleep(time.Millisecond)
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ cReceived := createReceived.value()
+ if cReceived != 2 {
+ t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 2)
+ }
+ mReceived := modifyReceived.value()
+ if mReceived < 3 {
+ t.Fatalf("incorrect number of modify events received after 500 ms (%d vs atleast %d)", mReceived, 3)
+ }
+ dReceived := deleteReceived.value()
+ if dReceived != 1 {
+ t.Fatalf("incorrect number of rename+delete events received after 500 ms (%d vs %d)", dReceived, 1)
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+}
+
+func TestFsnotifyDirOnly(t *testing.T) {
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create a file before watching directory
+ // This should NOT add any events to the fsnotify event queue
+ testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
+ {
+ var f *os.File
+ f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+ }
+
+ addWatch(t, watcher, testDir)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ testFile := filepath.Join(testDir, "TestFsnotifyDirOnly.testfile")
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var createReceived, modifyReceived, deleteReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) || event.Name == filepath.Clean(testFileAlreadyExists) {
+ t.Logf("event received: %s", event)
+ if event.Op&Remove == Remove {
+ deleteReceived.increment()
+ }
+ if event.Op&Write == Write {
+ modifyReceived.increment()
+ }
+ if event.Op&Create == Create {
+ createReceived.increment()
+ }
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ time.Sleep(time.Millisecond)
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(50 * time.Millisecond) // give system time to sync write change before delete
+
+ os.Remove(testFile)
+ os.Remove(testFileAlreadyExists)
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ cReceived := createReceived.value()
+ if cReceived != 1 {
+ t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 1)
+ }
+ mReceived := modifyReceived.value()
+ if mReceived != 1 {
+ t.Fatalf("incorrect number of modify events received after 500 ms (%d vs %d)", mReceived, 1)
+ }
+ dReceived := deleteReceived.value()
+ if dReceived != 2 {
+ t.Fatalf("incorrect number of delete events received after 500 ms (%d vs %d)", dReceived, 2)
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+}
+
+func TestFsnotifyDeleteWatchedDir(t *testing.T) {
+ watcher := newWatcher(t)
+ defer watcher.Close()
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create a file before watching directory
+ testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
+ {
+ var f *os.File
+ f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+ }
+
+ addWatch(t, watcher, testDir)
+
+ // Add a watch for testFile
+ addWatch(t, watcher, testFileAlreadyExists)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var deleteReceived counter
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFileAlreadyExists) {
+ t.Logf("event received: %s", event)
+ if event.Op&Remove == Remove {
+ deleteReceived.increment()
+ }
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ }()
+
+ os.RemoveAll(testDir)
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ dReceived := deleteReceived.value()
+ if dReceived < 2 {
+ t.Fatalf("did not receive at least %d delete events, received %d after 500 ms", 2, dReceived)
+ }
+}
+
+func TestFsnotifySubDir(t *testing.T) {
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ testFile1 := filepath.Join(testDir, "TestFsnotifyFile1.testfile")
+ testSubDir := filepath.Join(testDir, "sub")
+ testSubDirFile := filepath.Join(testDir, "sub/TestFsnotifyFile1.testfile")
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var createReceived, deleteReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testSubDir) || event.Name == filepath.Clean(testFile1) {
+ t.Logf("event received: %s", event)
+ if event.Op&Create == Create {
+ createReceived.increment()
+ }
+ if event.Op&Remove == Remove {
+ deleteReceived.increment()
+ }
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ addWatch(t, watcher, testDir)
+
+ // Create sub-directory
+ if err := os.Mkdir(testSubDir, 0777); err != nil {
+ t.Fatalf("failed to create test sub-directory: %s", err)
+ }
+
+ // Create a file
+ var f *os.File
+ f, err := os.OpenFile(testFile1, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+
+ // Create a file (Should not see this! we are not watching subdir)
+ var fs *os.File
+ fs, err = os.OpenFile(testSubDirFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ fs.Sync()
+ fs.Close()
+
+ time.Sleep(200 * time.Millisecond)
+
+ // Make sure receive deletes for both file and sub-directory
+ os.RemoveAll(testSubDir)
+ os.Remove(testFile1)
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ cReceived := createReceived.value()
+ if cReceived != 2 {
+ t.Fatalf("incorrect number of create events received after 500 ms (%d vs %d)", cReceived, 2)
+ }
+ dReceived := deleteReceived.value()
+ if dReceived != 2 {
+ t.Fatalf("incorrect number of delete events received after 500 ms (%d vs %d)", dReceived, 2)
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+}
+
+func TestFsnotifyRename(t *testing.T) {
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ addWatch(t, watcher, testDir)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ testFile := filepath.Join(testDir, "TestFsnotifyEvents.testfile")
+ testFileRenamed := filepath.Join(testDir, "TestFsnotifyEvents.testfileRenamed")
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var renameReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) || event.Name == filepath.Clean(testFileRenamed) {
+ if event.Op&Rename == Rename {
+ renameReceived.increment()
+ }
+ t.Logf("event received: %s", event)
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ // Add a watch for testFile
+ addWatch(t, watcher, testFile)
+
+ if err := testRename(testFile, testFileRenamed); err != nil {
+ t.Fatalf("rename failed: %s", err)
+ }
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ if renameReceived.value() == 0 {
+ t.Fatal("fsnotify rename events have not been received after 500 ms")
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+
+ os.Remove(testFileRenamed)
+}
+
+func TestFsnotifyRenameToCreate(t *testing.T) {
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create directory to get file
+ testDirFrom := tempMkdir(t)
+ defer os.RemoveAll(testDirFrom)
+
+ addWatch(t, watcher, testDir)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ testFile := filepath.Join(testDirFrom, "TestFsnotifyEvents.testfile")
+ testFileRenamed := filepath.Join(testDir, "TestFsnotifyEvents.testfileRenamed")
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var createReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) || event.Name == filepath.Clean(testFileRenamed) {
+ if event.Op&Create == Create {
+ createReceived.increment()
+ }
+ t.Logf("event received: %s", event)
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+
+ if err := testRename(testFile, testFileRenamed); err != nil {
+ t.Fatalf("rename failed: %s", err)
+ }
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ if createReceived.value() == 0 {
+ t.Fatal("fsnotify create events have not been received after 500 ms")
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+
+ os.Remove(testFileRenamed)
+}
+
+func TestFsnotifyRenameToOverwrite(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9", "windows":
+ t.Skipf("skipping test on %q (os.Rename over existing file does not create event).", runtime.GOOS)
+ }
+
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create directory to get file
+ testDirFrom := tempMkdir(t)
+ defer os.RemoveAll(testDirFrom)
+
+ testFile := filepath.Join(testDirFrom, "TestFsnotifyEvents.testfile")
+ testFileRenamed := filepath.Join(testDir, "TestFsnotifyEvents.testfileRenamed")
+
+ // Create a file
+ var fr *os.File
+ fr, err := os.OpenFile(testFileRenamed, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ fr.Sync()
+ fr.Close()
+
+ addWatch(t, watcher, testDir)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ var eventReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testFileRenamed) {
+ eventReceived.increment()
+ t.Logf("event received: %s", event)
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err = os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+
+ if err := testRename(testFile, testFileRenamed); err != nil {
+ t.Fatalf("rename failed: %s", err)
+ }
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+ if eventReceived.value() == 0 {
+ t.Fatal("fsnotify events have not been received after 500 ms")
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(2 * time.Second):
+ t.Fatal("event stream was not closed after 2 seconds")
+ }
+
+ os.Remove(testFileRenamed)
+}
+
+func TestRemovalOfWatch(t *testing.T) {
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create a file before watching directory
+ testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
+ {
+ var f *os.File
+ f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+ }
+
+ watcher := newWatcher(t)
+ defer watcher.Close()
+
+ addWatch(t, watcher, testDir)
+ if err := watcher.Remove(testDir); err != nil {
+ t.Fatalf("Could not remove the watch: %v\n", err)
+ }
+
+ go func() {
+ select {
+ case ev := <-watcher.Events:
+ t.Fatalf("We received event: %v\n", ev)
+ case <-time.After(500 * time.Millisecond):
+ t.Log("No event received, as expected.")
+ }
+ }()
+
+ time.Sleep(200 * time.Millisecond)
+ // Modify the file outside of the watched dir
+ f, err := os.Open(testFileAlreadyExists)
+ if err != nil {
+ t.Fatalf("Open test file failed: %s", err)
+ }
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+ if err := os.Chmod(testFileAlreadyExists, 0700); err != nil {
+ t.Fatalf("chmod failed: %s", err)
+ }
+ time.Sleep(400 * time.Millisecond)
+}
+
+func TestFsnotifyAttrib(t *testing.T) {
+ if runtime.GOOS == "windows" {
+ t.Skip("attributes don't work on Windows.")
+ }
+
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for err := range watcher.Errors {
+ t.Fatalf("error received: %s", err)
+ }
+ }()
+
+ testFile := filepath.Join(testDir, "TestFsnotifyAttrib.testfile")
+
+ // Receive events on the event channel on a separate goroutine
+ eventstream := watcher.Events
+ // The modifyReceived counter counts IsModify events that are not IsAttrib,
+ // and the attribReceived counts IsAttrib events (which are also IsModify as
+ // a consequence).
+ var modifyReceived counter
+ var attribReceived counter
+ done := make(chan bool)
+ go func() {
+ for event := range eventstream {
+ // Only count relevant events
+ if event.Name == filepath.Clean(testDir) || event.Name == filepath.Clean(testFile) {
+ if event.Op&Write == Write {
+ modifyReceived.increment()
+ }
+ if event.Op&Chmod == Chmod {
+ attribReceived.increment()
+ }
+ t.Logf("event received: %s", event)
+ } else {
+ t.Logf("unexpected event received: %s", event)
+ }
+ }
+ done <- true
+ }()
+
+ // Create a file
+ // This should add at least one event to the fsnotify event queue
+ var f *os.File
+ f, err := os.OpenFile(testFile, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+
+ f.WriteString("data")
+ f.Sync()
+ f.Close()
+
+ // Add a watch for testFile
+ addWatch(t, watcher, testFile)
+
+ if err := os.Chmod(testFile, 0700); err != nil {
+ t.Fatalf("chmod failed: %s", err)
+ }
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ // Creating/writing a file changes also the mtime, so IsAttrib should be set to true here
+ time.Sleep(500 * time.Millisecond)
+ if modifyReceived.value() != 0 {
+ t.Fatal("received an unexpected modify event when creating a test file")
+ }
+ if attribReceived.value() == 0 {
+ t.Fatal("fsnotify attribute events have not received after 500 ms")
+ }
+
+ // Modifying the contents of the file does not set the attrib flag (although eg. the mtime
+ // might have been modified).
+ modifyReceived.reset()
+ attribReceived.reset()
+
+ f, err = os.OpenFile(testFile, os.O_WRONLY, 0)
+ if err != nil {
+ t.Fatalf("reopening test file failed: %s", err)
+ }
+
+ f.WriteString("more data")
+ f.Sync()
+ f.Close()
+
+ time.Sleep(500 * time.Millisecond)
+
+ if modifyReceived.value() != 1 {
+ t.Fatal("didn't receive a modify event after changing test file contents")
+ }
+
+ if attribReceived.value() != 0 {
+ t.Fatal("did receive an unexpected attrib event after changing test file contents")
+ }
+
+ modifyReceived.reset()
+ attribReceived.reset()
+
+ // Doing a chmod on the file should trigger an event with the "attrib" flag set (the contents
+ // of the file are not changed though)
+ if err := os.Chmod(testFile, 0600); err != nil {
+ t.Fatalf("chmod failed: %s", err)
+ }
+
+ time.Sleep(500 * time.Millisecond)
+
+ if attribReceived.value() != 1 {
+ t.Fatal("didn't receive an attribute change after 500ms")
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+ t.Log("waiting for the event channel to become closed...")
+ select {
+ case <-done:
+ t.Log("event channel closed")
+ case <-time.After(1e9):
+ t.Fatal("event stream was not closed after 1 second")
+ }
+
+ os.Remove(testFile)
+}
+
+func TestFsnotifyClose(t *testing.T) {
+ watcher := newWatcher(t)
+ watcher.Close()
+
+ var done int32
+ go func() {
+ watcher.Close()
+ atomic.StoreInt32(&done, 1)
+ }()
+
+ time.Sleep(50e6) // 50 ms
+ if atomic.LoadInt32(&done) == 0 {
+ t.Fatal("double Close() test failed: second Close() call didn't return")
+ }
+
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ if err := watcher.Add(testDir); err == nil {
+ t.Fatal("expected error on Watch() after Close(), got nil")
+ }
+}
+
+func TestFsnotifyFakeSymlink(t *testing.T) {
+ if runtime.GOOS == "windows" {
+ t.Skip("symlinks don't work on Windows.")
+ }
+
+ watcher := newWatcher(t)
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ var errorsReceived counter
+ // Receive errors on the error channel on a separate goroutine
+ go func() {
+ for errors := range watcher.Errors {
+ t.Logf("Received error: %s", errors)
+ errorsReceived.increment()
+ }
+ }()
+
+ // Count the CREATE events received
+ var createEventsReceived, otherEventsReceived counter
+ go func() {
+ for ev := range watcher.Events {
+ t.Logf("event received: %s", ev)
+ if ev.Op&Create == Create {
+ createEventsReceived.increment()
+ } else {
+ otherEventsReceived.increment()
+ }
+ }
+ }()
+
+ addWatch(t, watcher, testDir)
+
+ if err := os.Symlink(filepath.Join(testDir, "zzz"), filepath.Join(testDir, "zzznew")); err != nil {
+ t.Fatalf("Failed to create bogus symlink: %s", err)
+ }
+ t.Logf("Created bogus symlink")
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+
+ // Should not be error, just no events for broken links (watching nothing)
+ if errorsReceived.value() > 0 {
+ t.Fatal("fsnotify errors have been received.")
+ }
+ if otherEventsReceived.value() > 0 {
+ t.Fatal("fsnotify other events received on the broken link")
+ }
+
+ // Except for 1 create event (for the link itself)
+ if createEventsReceived.value() == 0 {
+ t.Fatal("fsnotify create events were not received after 500 ms")
+ }
+ if createEventsReceived.value() > 1 {
+ t.Fatal("fsnotify more create events received than expected")
+ }
+
+ // Try closing the fsnotify instance
+ t.Log("calling Close()")
+ watcher.Close()
+}
+
+func TestCyclicSymlink(t *testing.T) {
+ if runtime.GOOS == "windows" {
+ t.Skip("symlinks don't work on Windows.")
+ }
+
+ watcher := newWatcher(t)
+
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ link := path.Join(testDir, "link")
+ if err := os.Symlink(".", link); err != nil {
+ t.Fatalf("could not make symlink: %v", err)
+ }
+ addWatch(t, watcher, testDir)
+
+ var createEventsReceived counter
+ go func() {
+ for ev := range watcher.Events {
+ if ev.Op&Create == Create {
+ createEventsReceived.increment()
+ }
+ }
+ }()
+
+ if err := os.Remove(link); err != nil {
+ t.Fatalf("Error removing link: %v", err)
+ }
+
+ // It would be nice to be able to expect a delete event here, but kqueue has
+ // no way for us to get events on symlinks themselves, because opening them
+ // opens an fd to the file to which they point.
+
+ if err := ioutil.WriteFile(link, []byte("foo"), 0700); err != nil {
+ t.Fatalf("could not make symlink: %v", err)
+ }
+
+ // We expect this event to be received almost immediately, but let's wait 500 ms to be sure
+ time.Sleep(500 * time.Millisecond)
+
+ if got := createEventsReceived.value(); got == 0 {
+ t.Errorf("want at least 1 create event got %v", got)
+ }
+
+ watcher.Close()
+}
+
+// TestConcurrentRemovalOfWatch tests that concurrent calls to RemoveWatch do not race.
+// See https://codereview.appspot.com/103300045/
+// go test -test.run=TestConcurrentRemovalOfWatch -test.cpu=1,1,1,1,1 -race
+func TestConcurrentRemovalOfWatch(t *testing.T) {
+ if runtime.GOOS != "darwin" {
+ t.Skip("regression test for race only present on darwin")
+ }
+
+ // Create directory to watch
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ // Create a file before watching directory
+ testFileAlreadyExists := filepath.Join(testDir, "TestFsnotifyEventsExisting.testfile")
+ {
+ var f *os.File
+ f, err := os.OpenFile(testFileAlreadyExists, os.O_WRONLY|os.O_CREATE, 0666)
+ if err != nil {
+ t.Fatalf("creating test file failed: %s", err)
+ }
+ f.Sync()
+ f.Close()
+ }
+
+ watcher := newWatcher(t)
+ defer watcher.Close()
+
+ addWatch(t, watcher, testDir)
+
+ // Test that RemoveWatch can be invoked concurrently, with no data races.
+ removed1 := make(chan struct{})
+ go func() {
+ defer close(removed1)
+ watcher.Remove(testDir)
+ }()
+ removed2 := make(chan struct{})
+ go func() {
+ close(removed2)
+ watcher.Remove(testDir)
+ }()
+ <-removed1
+ <-removed2
+}
+
+func TestClose(t *testing.T) {
+ // Regression test for #59 bad file descriptor from Close
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ watcher := newWatcher(t)
+ if err := watcher.Add(testDir); err != nil {
+ t.Fatalf("Expected no error on Add, got %v", err)
+ }
+ err := watcher.Close()
+ if err != nil {
+ t.Fatalf("Expected no error on Close, got %v.", err)
+ }
+}
+
+// TestRemoveWithClose tests if one can handle Remove events and, at the same
+// time, close Watcher object without any data races.
+func TestRemoveWithClose(t *testing.T) {
+ testDir := tempMkdir(t)
+ defer os.RemoveAll(testDir)
+
+ const fileN = 200
+ tempFiles := make([]string, 0, fileN)
+ for i := 0; i < fileN; i++ {
+ tempFiles = append(tempFiles, tempMkFile(t, testDir))
+ }
+ watcher := newWatcher(t)
+ if err := watcher.Add(testDir); err != nil {
+ t.Fatalf("Expected no error on Add, got %v", err)
+ }
+ startC, stopC := make(chan struct{}), make(chan struct{})
+ errC := make(chan error)
+ go func() {
+ for {
+ select {
+ case <-watcher.Errors:
+ case <-watcher.Events:
+ case <-stopC:
+ return
+ }
+ }
+ }()
+ go func() {
+ <-startC
+ for _, fileName := range tempFiles {
+ os.Remove(fileName)
+ }
+ }()
+ go func() {
+ <-startC
+ errC <- watcher.Close()
+ }()
+ close(startC)
+ defer close(stopC)
+ if err := <-errC; err != nil {
+ t.Fatalf("Expected no error on Close, got %v.", err)
+ }
+}
+
+func testRename(file1, file2 string) error {
+ switch runtime.GOOS {
+ case "windows", "plan9":
+ return os.Rename(file1, file2)
+ default:
+ cmd := exec.Command("mv", file1, file2)
+ return cmd.Run()
+ }
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/kqueue.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/kqueue.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/kqueue.go
new file mode 100644
index 0000000..c2b4acb
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/kqueue.go
@@ -0,0 +1,503 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd dragonfly darwin
+
+package fsnotify
+
+import (
+ "errors"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "path/filepath"
+ "sync"
+ "time"
+
+ "golang.org/x/sys/unix"
+)
+
+// Watcher watches a set of files, delivering events to a channel.
+type Watcher struct {
+ Events chan Event
+ Errors chan error
+ done chan bool // Channel for sending a "quit message" to the reader goroutine
+
+ kq int // File descriptor (as returned by the kqueue() syscall).
+
+ mu sync.Mutex // Protects access to watcher data
+ watches map[string]int // Map of watched file descriptors (key: path).
+ externalWatches map[string]bool // Map of watches added by user of the library.
+ dirFlags map[string]uint32 // Map of watched directories to fflags used in kqueue.
+ paths map[int]pathInfo // Map file descriptors to path names for processing kqueue events.
+ fileExists map[string]bool // Keep track of if we know this file exists (to stop duplicate create events).
+ isClosed bool // Set to true when Close() is first called
+}
+
+type pathInfo struct {
+ name string
+ isDir bool
+}
+
+// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
+func NewWatcher() (*Watcher, error) {
+ kq, err := kqueue()
+ if err != nil {
+ return nil, err
+ }
+
+ w := &Watcher{
+ kq: kq,
+ watches: make(map[string]int),
+ dirFlags: make(map[string]uint32),
+ paths: make(map[int]pathInfo),
+ fileExists: make(map[string]bool),
+ externalWatches: make(map[string]bool),
+ Events: make(chan Event),
+ Errors: make(chan error),
+ done: make(chan bool),
+ }
+
+ go w.readEvents()
+ return w, nil
+}
+
+// Close removes all watches and closes the events channel.
+func (w *Watcher) Close() error {
+ w.mu.Lock()
+ if w.isClosed {
+ w.mu.Unlock()
+ return nil
+ }
+ w.isClosed = true
+ w.mu.Unlock()
+
+ // copy paths to remove while locked
+ w.mu.Lock()
+ var pathsToRemove = make([]string, 0, len(w.watches))
+ for name := range w.watches {
+ pathsToRemove = append(pathsToRemove, name)
+ }
+ w.mu.Unlock()
+ // unlock before calling Remove, which also locks
+
+ var err error
+ for _, name := range pathsToRemove {
+ if e := w.Remove(name); e != nil && err == nil {
+ err = e
+ }
+ }
+
+ // Send "quit" message to the reader goroutine:
+ w.done <- true
+
+ return nil
+}
+
+// Add starts watching the named file or directory (non-recursively).
+func (w *Watcher) Add(name string) error {
+ w.mu.Lock()
+ w.externalWatches[name] = true
+ w.mu.Unlock()
+ _, err := w.addWatch(name, noteAllEvents)
+ return err
+}
+
+// Remove stops watching the the named file or directory (non-recursively).
+func (w *Watcher) Remove(name string) error {
+ name = filepath.Clean(name)
+ w.mu.Lock()
+ watchfd, ok := w.watches[name]
+ w.mu.Unlock()
+ if !ok {
+ return fmt.Errorf("can't remove non-existent kevent watch for: %s", name)
+ }
+
+ const registerRemove = unix.EV_DELETE
+ if err := register(w.kq, []int{watchfd}, registerRemove, 0); err != nil {
+ return err
+ }
+
+ unix.Close(watchfd)
+
+ w.mu.Lock()
+ isDir := w.paths[watchfd].isDir
+ delete(w.watches, name)
+ delete(w.paths, watchfd)
+ delete(w.dirFlags, name)
+ w.mu.Unlock()
+
+ // Find all watched paths that are in this directory that are not external.
+ if isDir {
+ var pathsToRemove []string
+ w.mu.Lock()
+ for _, path := range w.paths {
+ wdir, _ := filepath.Split(path.name)
+ if filepath.Clean(wdir) == name {
+ if !w.externalWatches[path.name] {
+ pathsToRemove = append(pathsToRemove, path.name)
+ }
+ }
+ }
+ w.mu.Unlock()
+ for _, name := range pathsToRemove {
+ // Since these are internal, not much sense in propagating error
+ // to the user, as that will just confuse them with an error about
+ // a path they did not explicitly watch themselves.
+ w.Remove(name)
+ }
+ }
+
+ return nil
+}
+
+// Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE)
+const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME
+
+// keventWaitTime to block on each read from kevent
+var keventWaitTime = durationToTimespec(100 * time.Millisecond)
+
+// addWatch adds name to the watched file set.
+// The flags are interpreted as described in kevent(2).
+// Returns the real path to the file which was added, if any, which may be different from the one passed in the case of symlinks.
+func (w *Watcher) addWatch(name string, flags uint32) (string, error) {
+ var isDir bool
+ // Make ./name and name equivalent
+ name = filepath.Clean(name)
+
+ w.mu.Lock()
+ if w.isClosed {
+ w.mu.Unlock()
+ return "", errors.New("kevent instance already closed")
+ }
+ watchfd, alreadyWatching := w.watches[name]
+ // We already have a watch, but we can still override flags.
+ if alreadyWatching {
+ isDir = w.paths[watchfd].isDir
+ }
+ w.mu.Unlock()
+
+ if !alreadyWatching {
+ fi, err := os.Lstat(name)
+ if err != nil {
+ return "", err
+ }
+
+ // Don't watch sockets.
+ if fi.Mode()&os.ModeSocket == os.ModeSocket {
+ return "", nil
+ }
+
+ // Don't watch named pipes.
+ if fi.Mode()&os.ModeNamedPipe == os.ModeNamedPipe {
+ return "", nil
+ }
+
+ // Follow Symlinks
+ // Unfortunately, Linux can add bogus symlinks to watch list without
+ // issue, and Windows can't do symlinks period (AFAIK). To maintain
+ // consistency, we will act like everything is fine. There will simply
+ // be no file events for broken symlinks.
+ // Hence the returns of nil on errors.
+ if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
+ name, err = filepath.EvalSymlinks(name)
+ if err != nil {
+ return "", nil
+ }
+
+ w.mu.Lock()
+ _, alreadyWatching = w.watches[name]
+ w.mu.Unlock()
+
+ if alreadyWatching {
+ return name, nil
+ }
+
+ fi, err = os.Lstat(name)
+ if err != nil {
+ return "", nil
+ }
+ }
+
+ watchfd, err = unix.Open(name, openMode, 0700)
+ if watchfd == -1 {
+ return "", err
+ }
+
+ isDir = fi.IsDir()
+ }
+
+ const registerAdd = unix.EV_ADD | unix.EV_CLEAR | unix.EV_ENABLE
+ if err := register(w.kq, []int{watchfd}, registerAdd, flags); err != nil {
+ unix.Close(watchfd)
+ return "", err
+ }
+
+ if !alreadyWatching {
+ w.mu.Lock()
+ w.watches[name] = watchfd
+ w.paths[watchfd] = pathInfo{name: name, isDir: isDir}
+ w.mu.Unlock()
+ }
+
+ if isDir {
+ // Watch the directory if it has not been watched before,
+ // or if it was watched before, but perhaps only a NOTE_DELETE (watchDirectoryFiles)
+ w.mu.Lock()
+
+ watchDir := (flags&unix.NOTE_WRITE) == unix.NOTE_WRITE &&
+ (!alreadyWatching || (w.dirFlags[name]&unix.NOTE_WRITE) != unix.NOTE_WRITE)
+ // Store flags so this watch can be updated later
+ w.dirFlags[name] = flags
+ w.mu.Unlock()
+
+ if watchDir {
+ if err := w.watchDirectoryFiles(name); err != nil {
+ return "", err
+ }
+ }
+ }
+ return name, nil
+}
+
+// readEvents reads from kqueue and converts the received kevents into
+// Event values that it sends down the Events channel.
+func (w *Watcher) readEvents() {
+ eventBuffer := make([]unix.Kevent_t, 10)
+
+ for {
+ // See if there is a message on the "done" channel
+ select {
+ case <-w.done:
+ err := unix.Close(w.kq)
+ if err != nil {
+ w.Errors <- err
+ }
+ close(w.Events)
+ close(w.Errors)
+ return
+ default:
+ }
+
+ // Get new events
+ kevents, err := read(w.kq, eventBuffer, &keventWaitTime)
+ // EINTR is okay, the syscall was interrupted before timeout expired.
+ if err != nil && err != unix.EINTR {
+ w.Errors <- err
+ continue
+ }
+
+ // Flush the events we received to the Events channel
+ for len(kevents) > 0 {
+ kevent := &kevents[0]
+ watchfd := int(kevent.Ident)
+ mask := uint32(kevent.Fflags)
+ w.mu.Lock()
+ path := w.paths[watchfd]
+ w.mu.Unlock()
+ event := newEvent(path.name, mask)
+
+ if path.isDir && !(event.Op&Remove == Remove) {
+ // Double check to make sure the directory exists. This can happen when
+ // we do a rm -fr on a recursively watched folders and we receive a
+ // modification event first but the folder has been deleted and later
+ // receive the delete event
+ if _, err := os.Lstat(event.Name); os.IsNotExist(err) {
+ // mark is as delete event
+ event.Op |= Remove
+ }
+ }
+
+ if event.Op&Rename == Rename || event.Op&Remove == Remove {
+ w.Remove(event.Name)
+ w.mu.Lock()
+ delete(w.fileExists, event.Name)
+ w.mu.Unlock()
+ }
+
+ if path.isDir && event.Op&Write == Write && !(event.Op&Remove == Remove) {
+ w.sendDirectoryChangeEvents(event.Name)
+ } else {
+ // Send the event on the Events channel
+ w.Events <- event
+ }
+
+ if event.Op&Remove == Remove {
+ // Look for a file that may have overwritten this.
+ // For example, mv f1 f2 will delete f2, then create f2.
+ if path.isDir {
+ fileDir := filepath.Clean(event.Name)
+ w.mu.Lock()
+ _, found := w.watches[fileDir]
+ w.mu.Unlock()
+ if found {
+ // make sure the directory exists before we watch for changes. When we
+ // do a recursive watch and perform rm -fr, the parent directory might
+ // have gone missing, ignore the missing directory and let the
+ // upcoming delete event remove the watch from the parent directory.
+ if _, err := os.Lstat(fileDir); err == nil {
+ w.sendDirectoryChangeEvents(fileDir)
+ }
+ }
+ } else {
+ filePath := filepath.Clean(event.Name)
+ if fileInfo, err := os.Lstat(filePath); err == nil {
+ w.sendFileCreatedEventIfNew(filePath, fileInfo)
+ }
+ }
+ }
+
+ // Move to next event
+ kevents = kevents[1:]
+ }
+ }
+}
+
+// newEvent returns an platform-independent Event based on kqueue Fflags.
+func newEvent(name string, mask uint32) Event {
+ e := Event{Name: name}
+ if mask&unix.NOTE_DELETE == unix.NOTE_DELETE {
+ e.Op |= Remove
+ }
+ if mask&unix.NOTE_WRITE == unix.NOTE_WRITE {
+ e.Op |= Write
+ }
+ if mask&unix.NOTE_RENAME == unix.NOTE_RENAME {
+ e.Op |= Rename
+ }
+ if mask&unix.NOTE_ATTRIB == unix.NOTE_ATTRIB {
+ e.Op |= Chmod
+ }
+ return e
+}
+
+func newCreateEvent(name string) Event {
+ return Event{Name: name, Op: Create}
+}
+
+// watchDirectoryFiles to mimic inotify when adding a watch on a directory
+func (w *Watcher) watchDirectoryFiles(dirPath string) error {
+ // Get all files
+ files, err := ioutil.ReadDir(dirPath)
+ if err != nil {
+ return err
+ }
+
+ for _, fileInfo := range files {
+ filePath := filepath.Join(dirPath, fileInfo.Name())
+ filePath, err = w.internalWatch(filePath, fileInfo)
+ if err != nil {
+ return err
+ }
+
+ w.mu.Lock()
+ w.fileExists[filePath] = true
+ w.mu.Unlock()
+ }
+
+ return nil
+}
+
+// sendDirectoryEvents searches the directory for newly created files
+// and sends them over the event channel. This functionality is to have
+// the BSD version of fsnotify match Linux inotify which provides a
+// create event for files created in a watched directory.
+func (w *Watcher) sendDirectoryChangeEvents(dirPath string) {
+ // Get all files
+ files, err := ioutil.ReadDir(dirPath)
+ if err != nil {
+ w.Errors <- err
+ }
+
+ // Search for new files
+ for _, fileInfo := range files {
+ filePath := filepath.Join(dirPath, fileInfo.Name())
+ err := w.sendFileCreatedEventIfNew(filePath, fileInfo)
+
+ if err != nil {
+ return
+ }
+ }
+}
+
+// sendFileCreatedEvent sends a create event if the file isn't already being tracked.
+func (w *Watcher) sendFileCreatedEventIfNew(filePath string, fileInfo os.FileInfo) (err error) {
+ w.mu.Lock()
+ _, doesExist := w.fileExists[filePath]
+ w.mu.Unlock()
+ if !doesExist {
+ // Send create event
+ w.Events <- newCreateEvent(filePath)
+ }
+
+ // like watchDirectoryFiles (but without doing another ReadDir)
+ filePath, err = w.internalWatch(filePath, fileInfo)
+ if err != nil {
+ return err
+ }
+
+ w.mu.Lock()
+ w.fileExists[filePath] = true
+ w.mu.Unlock()
+
+ return nil
+}
+
+func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) (string, error) {
+ if fileInfo.IsDir() {
+ // mimic Linux providing delete events for subdirectories
+ // but preserve the flags used if currently watching subdirectory
+ w.mu.Lock()
+ flags := w.dirFlags[name]
+ w.mu.Unlock()
+
+ flags |= unix.NOTE_DELETE | unix.NOTE_RENAME
+ return w.addWatch(name, flags)
+ }
+
+ // watch file to mimic Linux inotify
+ return w.addWatch(name, noteAllEvents)
+}
+
+// kqueue creates a new kernel event queue and returns a descriptor.
+func kqueue() (kq int, err error) {
+ kq, err = unix.Kqueue()
+ if kq == -1 {
+ return kq, err
+ }
+ return kq, nil
+}
+
+// register events with the queue
+func register(kq int, fds []int, flags int, fflags uint32) error {
+ changes := make([]unix.Kevent_t, len(fds))
+
+ for i, fd := range fds {
+ // SetKevent converts int to the platform-specific types:
+ unix.SetKevent(&changes[i], fd, unix.EVFILT_VNODE, flags)
+ changes[i].Fflags = fflags
+ }
+
+ // register the events
+ success, err := unix.Kevent(kq, changes, nil, nil)
+ if success == -1 {
+ return err
+ }
+ return nil
+}
+
+// read retrieves pending events, or waits until an event occurs.
+// A timeout of nil blocks indefinitely, while 0 polls the queue.
+func read(kq int, events []unix.Kevent_t, timeout *unix.Timespec) ([]unix.Kevent_t, error) {
+ n, err := unix.Kevent(kq, nil, events, timeout)
+ if err != nil {
+ return nil, err
+ }
+ return events[0:n], nil
+}
+
+// durationToTimespec prepares a timeout value
+func durationToTimespec(d time.Duration) unix.Timespec {
+ return unix.NsecToTimespec(d.Nanoseconds())
+}
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_bsd.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_bsd.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_bsd.go
new file mode 100644
index 0000000..7d8de14
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_bsd.go
@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd dragonfly
+
+package fsnotify
+
+import "golang.org/x/sys/unix"
+
+const openMode = unix.O_NONBLOCK | unix.O_RDONLY
http://git-wip-us.apache.org/repos/asf/incubator-trafficcontrol/blob/594b8517/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_darwin.go
----------------------------------------------------------------------
diff --git a/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_darwin.go b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_darwin.go
new file mode 100644
index 0000000..9139e17
--- /dev/null
+++ b/traffic_monitor_golang/vendor/gopkg.in/fsnotify.v1/open_mode_darwin.go
@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin
+
+package fsnotify
+
+import "golang.org/x/sys/unix"
+
+// note: this constant is not defined on BSD
+const openMode = unix.O_EVTONLY