2 files changed, 0 insertions, 282 deletions
diff --git a/vendor/github.com/facebookgo/grace/gracenet/license b/vendor/github.com/facebookgo/grace/gracenet/license
deleted file mode 100644
index 3aea8753..00000000
--- a/vendor/github.com/facebookgo/grace/gracenet/license
+++ /dev/null
@@ -1,30 +0,0 @@
-BSD License
-
-For grace software
-
-Copyright (c) 2015, Facebook, Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above copyright notice,
-   this list of conditions and the following disclaimer in the documentation
-   and/or other materials provided with the distribution.
-
- * Neither the name Facebook nor the names of its contributors may be used to
-   endorse or promote products derived from this software without specific
-   prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/facebookgo/grace/gracenet/net.go b/vendor/github.com/facebookgo/grace/gracenet/net.go
deleted file mode 100644
index a980954a..00000000
--- a/vendor/github.com/facebookgo/grace/gracenet/net.go
+++ /dev/null
@@ -1,252 +0,0 @@
-// Package gracenet provides a family of Listen functions that either open a
-// fresh connection or provide an inherited connection from when the process
-// was started. The behave like their counterparts in the net package, but
-// transparently provide support for graceful restarts without dropping
-// connections. This is provided in a systemd socket activation compatible form
-// to allow using socket activation.
-//
-// BUG: Doesn't handle closing of listeners.
-package gracenet
-
-import (
-	"fmt"
-	"net"
-	"os"
-	"os/exec"
-	"strconv"
-	"strings"
-	"sync"
-)
-
-const (
-	// Used to indicate a graceful restart in the new process.
-	envCountKey       = "LISTEN_FDS"
-	envCountKeyPrefix = envCountKey + "="
-)
-
-// In order to keep the working directory the same as when we started we record
-// it at startup.
-var originalWD, _ = os.Getwd()
-
-// Net provides the family of Listen functions and maintains the associated
-// state. Typically you will have only once instance of Net per application.
-type Net struct {
-	inherited   []net.Listener
-	active      []net.Listener
-	mutex       sync.Mutex
-	inheritOnce sync.Once
-
-	// used in tests to override the default behavior of starting from fd 3.
-	fdStart int
-}
-
-func (n *Net) inherit() error {
-	var retErr error
-	n.inheritOnce.Do(func() {
-		n.mutex.Lock()
-		defer n.mutex.Unlock()
-		countStr := os.Getenv(envCountKey)
-		if countStr == "" {
-			return
-		}
-		count, err := strconv.Atoi(countStr)
-		if err != nil {
-			retErr = fmt.Errorf("found invalid count value: %s=%s", envCountKey, countStr)
-			return
-		}
-
-		// In tests this may be overridden.
-		fdStart := n.fdStart
-		if fdStart == 0 {
-			// In normal operations if we are inheriting, the listeners will begin at
-			// fd 3.
-			fdStart = 3
-		}
-
-		for i := fdStart; i < fdStart+count; i++ {
-			file := os.NewFile(uintptr(i), "listener")
-			l, err := net.FileListener(file)
-			if err != nil {
-				file.Close()
-				retErr = fmt.Errorf("error inheriting socket fd %d: %s", i, err)
-				return
-			}
-			if err := file.Close(); err != nil {
-				retErr = fmt.Errorf("error closing inherited socket fd %d: %s", i, err)
-				return
-			}
-			n.inherited = append(n.inherited, l)
-		}
-	})
-	return retErr
-}
-
-// Listen announces on the local network address laddr. The network net must be
-// a stream-oriented network: "tcp", "tcp4", "tcp6", "unix" or "unixpacket". It
-// returns an inherited net.Listener for the matching network and address, or
-// creates a new one using net.Listen.
-func (n *Net) Listen(nett, laddr string) (net.Listener, error) {
-	switch nett {
-	default:
-		return nil, net.UnknownNetworkError(nett)
-	case "tcp", "tcp4", "tcp6":
-		addr, err := net.ResolveTCPAddr(nett, laddr)
-		if err != nil {
-			return nil, err
-		}
-		return n.ListenTCP(nett, addr)
-	case "unix", "unixpacket", "invalid_unix_net_for_test":
-		addr, err := net.ResolveUnixAddr(nett, laddr)
-		if err != nil {
-			return nil, err
-		}
-		return n.ListenUnix(nett, addr)
-	}
-}
-
-// ListenTCP announces on the local network address laddr. The network net must
-// be: "tcp", "tcp4" or "tcp6". It returns an inherited net.Listener for the
-// matching network and address, or creates a new one using net.ListenTCP.
-func (n *Net) ListenTCP(nett string, laddr *net.TCPAddr) (*net.TCPListener, error) {
-	if err := n.inherit(); err != nil {
-		return nil, err
-	}
-
-	n.mutex.Lock()
-	defer n.mutex.Unlock()
-
-	// look for an inherited listener
-	for i, l := range n.inherited {
-		if l == nil { // we nil used inherited listeners
-			continue
-		}
-		if isSameAddr(l.Addr(), laddr) {
-			n.inherited[i] = nil
-			n.active = append(n.active, l)
-			return l.(*net.TCPListener), nil
-		}
-	}
-
-	// make a fresh listener
-	l, err := net.ListenTCP(nett, laddr)
-	if err != nil {
-		return nil, err
-	}
-	n.active = append(n.active, l)
-	return l, nil
-}
-
-// ListenUnix announces on the local network address laddr. The network net
-// must be a: "unix" or "unixpacket". It returns an inherited net.Listener for
-// the matching network and address, or creates a new one using net.ListenUnix.
-func (n *Net) ListenUnix(nett string, laddr *net.UnixAddr) (*net.UnixListener, error) {
-	if err := n.inherit(); err != nil {
-		return nil, err
-	}
-
-	n.mutex.Lock()
-	defer n.mutex.Unlock()
-
-	// look for an inherited listener
-	for i, l := range n.inherited {
-		if l == nil { // we nil used inherited listeners
-			continue
-		}
-		if isSameAddr(l.Addr(), laddr) {
-			n.inherited[i] = nil
-			n.active = append(n.active, l)
-			return l.(*net.UnixListener), nil
-		}
-	}
-
-	// make a fresh listener
-	l, err := net.ListenUnix(nett, laddr)
-	if err != nil {
-		return nil, err
-	}
-	n.active = append(n.active, l)
-	return l, nil
-}
-
-// activeListeners returns a snapshot copy of the active listeners.
-func (n *Net) activeListeners() ([]net.Listener, error) {
-	n.mutex.Lock()
-	defer n.mutex.Unlock()
-	ls := make([]net.Listener, len(n.active))
-	copy(ls, n.active)
-	return ls, nil
-}
-
-func isSameAddr(a1, a2 net.Addr) bool {
-	if a1.Network() != a2.Network() {
-		return false
-	}
-	a1s := a1.String()
-	a2s := a2.String()
-	if a1s == a2s {
-		return true
-	}
-
-	// This allows for ipv6 vs ipv4 local addresses to compare as equal. This
-	// scenario is common when listening on localhost.
-	const ipv6prefix = "[::]"
-	a1s = strings.TrimPrefix(a1s, ipv6prefix)
-	a2s = strings.TrimPrefix(a2s, ipv6prefix)
-	const ipv4prefix = "0.0.0.0"
-	a1s = strings.TrimPrefix(a1s, ipv4prefix)
-	a2s = strings.TrimPrefix(a2s, ipv4prefix)
-	return a1s == a2s
-}
-
-// StartProcess starts a new process passing it the active listeners. It
-// doesn't fork, but starts a new process using the same environment and
-// arguments as when it was originally started. This allows for a newly
-// deployed binary to be started. It returns the pid of the newly started
-// process when successful.
-func (n *Net) StartProcess() (int, error) {
-	listeners, err := n.activeListeners()
-	if err != nil {
-		return 0, err
-	}
-
-	// Extract the fds from the listeners.
-	files := make([]*os.File, len(listeners))
-	for i, l := range listeners {
-		files[i], err = l.(filer).File()
-		if err != nil {
-			return 0, err
-		}
-		defer files[i].Close()
-	}
-
-	// Use the original binary location. This works with symlinks such that if
-	// the file it points to has been changed we will use the updated symlink.
-	argv0, err := exec.LookPath(os.Args[0])
-	if err != nil {
-		return 0, err
-	}
-
-	// Pass on the environment and replace the old count key with the new one.
-	var env []string
-	for _, v := range os.Environ() {
-		if !strings.HasPrefix(v, envCountKeyPrefix) {
-			env = append(env, v)
-		}
-	}
-	env = append(env, fmt.Sprintf("%s%d", envCountKeyPrefix, len(listeners)))
-
-	allFiles := append([]*os.File{os.Stdin, os.Stdout, os.Stderr}, files...)
-	process, err := os.StartProcess(argv0, os.Args, &os.ProcAttr{
-		Dir:   originalWD,
-		Env:   env,
-		Files: allFiles,
-	})
-	if err != nil {
-		return 0, err
-	}
-	return process.Pid, nil
-}
-
-type filer interface {
-	File() (*os.File, error)
-}