Update logrus vendor

closes #2125

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

registry/registry.go

@@ -12,7 +12,7 @@ import (
 	"rsc.io/letsencrypt"
 
 	log "github.com/Sirupsen/logrus"
-	"github.com/Sirupsen/logrus/formatters/logstash"
+	logstash "github.com/bshuster-repo/logrus-logstash-hook"
 	"github.com/bugsnag/bugsnag-go"
 	"github.com/docker/distribution/configuration"
 	"github.com/docker/distribution/context"

vendor.conf

@@ -1,6 +1,7 @@
 github.com/Azure/azure-sdk-for-go/storage 0b5fe2abe0271ba07049eacaa65922d67c319543
-github.com/Sirupsen/logrus 55eb11d21d2a31a3cc93838241d04800f52e823d
+github.com/Sirupsen/logrus d26492970760ca5d33129d2d799e34be5c4782eb
 github.com/aws/aws-sdk-go 90dec2183a5f5458ee79cbaf4b8e9ab910bc81a6
+github.com/bshuster-repo/logrus-logstash-hook 5f729f2fb50a301153cae84ff5c58981d51c095a
 github.com/bugsnag/bugsnag-go b1d153021fcd90ca3f080db36bec96dc690fb274
 github.com/bugsnag/osext 0dd3f918b21bec95ace9dc86c7e70266cfc5c702
 github.com/bugsnag/panicwrap e2c28503fcd0675329da73bf48b33404db873782

vendor/github.com/Sirupsen/logrus/alt_exit.go

@@ -0,0 +1,64 @@
+package logrus
+
+// The following code was sourced and modified from the
+// https://bitbucket.org/tebeka/atexit package governed by the following license:
+//
+// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import (
+	"fmt"
+	"os"
+)
+
+var handlers = []func(){}
+
+func runHandler(handler func()) {
+	defer func() {
+		if err := recover(); err != nil {
+			fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
+		}
+	}()
+
+	handler()
+}
+
+func runHandlers() {
+	for _, handler := range handlers {
+		runHandler(handler)
+	}
+}
+
+// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
+func Exit(code int) {
+	runHandlers()
+	os.Exit(code)
+}
+
+// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
+// all handlers. The handlers will also be invoked when any Fatal log entry is
+// made.
+//
+// This method is useful when a caller wishes to use logrus to log a fatal
+// message but also needs to gracefully shutdown. An example usecase could be
+// closing database connections, or sending a alert that the application is
+// closing.
+func RegisterExitHandler(handler func()) {
+	handlers = append(handlers, handler)
+}

vendor/github.com/Sirupsen/logrus/doc.go

@@ -0,0 +1,26 @@
+/*
+Package logrus is a structured logger for Go, completely API compatible with the standard library logger.
+
+
+The simplest way to use Logrus is simply the package-level exported logger:
+
+  package main
+
+  import (
+    log "github.com/Sirupsen/logrus"
+  )
+
+  func main() {
+    log.WithFields(log.Fields{
+      "animal": "walrus",
+      "number": 1,
+      "size":   10,
+    }).Info("A walrus appears")
+  }
+
+Output:
+  time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
+
+For a full guide visit https://github.com/Sirupsen/logrus
+*/
+package logrus

vendor/github.com/Sirupsen/logrus/entry.go

@@ -3,11 +3,24 @@ package logrus
 import (
 	"bytes"
 	"fmt"
-	"io"
 	"os"
+	"sync"
 	"time"
 )
 
+var bufferPool *sync.Pool
+
+func init() {
+	bufferPool = &sync.Pool{
+		New: func() interface{} {
+			return new(bytes.Buffer)
+		},
+	}
+}
+
+// Defines the key when adding errors using WithError.
+var ErrorKey = "error"
+
 // An entry is the final or intermediate Logrus logging entry. It contains all
 // the fields passed with WithField{,s}. It's finally logged when Debug, Info,
 // Warn, Error, Fatal or Panic is called on it. These objects can be reused and
@@ -26,6 +39,9 @@ type Entry struct {
 
 	// Message passed to Debug, Info, Warn, Error, Fatal or Panic
 	Message string
+
+	// When formatter is called in entry.log(), an Buffer may be set to entry
+	Buffer *bytes.Buffer
 }
 
 func NewEntry(logger *Logger) *Entry {
@@ -36,21 +52,20 @@ func NewEntry(logger *Logger) *Entry {
 	}
 }
 
-// Returns a reader for the entry, which is a proxy to the formatter.
-func (entry *Entry) Reader() (*bytes.Buffer, error) {
-	serialized, err := entry.Logger.Formatter.Format(entry)
-	return bytes.NewBuffer(serialized), err
-}
-
 // Returns the string representation from the reader and ultimately the
 // formatter.
 func (entry *Entry) String() (string, error) {
-	reader, err := entry.Reader()
+	serialized, err := entry.Logger.Formatter.Format(entry)
 	if err != nil {
 		return "", err
 	}
+	str := string(serialized)
+	return str, nil
+}
 
-	return reader.String(), err
+// Add an error as single field (using the key defined in ErrorKey) to the Entry.
+func (entry *Entry) WithError(err error) *Entry {
+	return entry.WithField(ErrorKey, err)
 }
 
 // Add a single field to the Entry.
@@ -60,7 +75,7 @@ func (entry *Entry) WithField(key string, value interface{}) *Entry {
 
 // Add a map of fields to the Entry.
 func (entry *Entry) WithFields(fields Fields) *Entry {
-	data := Fields{}
+	data := make(Fields, len(entry.Data)+len(fields))
 	for k, v := range entry.Data {
 		data[k] = v
 	}
@@ -70,37 +85,43 @@ func (entry *Entry) WithFields(fields Fields) *Entry {
 	return &Entry{Logger: entry.Logger, Data: data}
 }
 
-func (entry *Entry) log(level Level, msg string) {
+// This function is not declared with a pointer value because otherwise
+// race conditions will occur when using multiple goroutines
+func (entry Entry) log(level Level, msg string) {
+	var buffer *bytes.Buffer
 	entry.Time = time.Now()
 	entry.Level = level
 	entry.Message = msg
 
-	if err := entry.Logger.Hooks.Fire(level, entry); err != nil {
+	if err := entry.Logger.Hooks.Fire(level, &entry); err != nil {
 		entry.Logger.mu.Lock()
 		fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
 		entry.Logger.mu.Unlock()
 	}
-
-	reader, err := entry.Reader()
+	buffer = bufferPool.Get().(*bytes.Buffer)
+	buffer.Reset()
+	defer bufferPool.Put(buffer)
+	entry.Buffer = buffer
+	serialized, err := entry.Logger.Formatter.Format(&entry)
+	entry.Buffer = nil
 	if err != nil {
 		entry.Logger.mu.Lock()
 		fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
 		entry.Logger.mu.Unlock()
-	}
-
-	entry.Logger.mu.Lock()
-	defer entry.Logger.mu.Unlock()
-
-	_, err = io.Copy(entry.Logger.Out, reader)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
+	} else {
+		entry.Logger.mu.Lock()
+		_, err = entry.Logger.Out.Write(serialized)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
+		}
+		entry.Logger.mu.Unlock()
 	}
 
 	// To avoid Entry#log() returning a value that only would make sense for
 	// panic() to use in Entry#Panic(), we avoid the allocation by checking
 	// directly here.
 	if level <= PanicLevel {
-		panic(entry)
+		panic(&entry)
 	}
 }
 
@@ -140,7 +161,7 @@ func (entry *Entry) Fatal(args ...interface{}) {
 	if entry.Logger.Level >= FatalLevel {
 		entry.log(FatalLevel, fmt.Sprint(args...))
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (entry *Entry) Panic(args ...interface{}) {
@@ -188,6 +209,7 @@ func (entry *Entry) Fatalf(format string, args ...interface{}) {
 	if entry.Logger.Level >= FatalLevel {
 		entry.Fatal(fmt.Sprintf(format, args...))
 	}
+	Exit(1)
 }
 
 func (entry *Entry) Panicf(format string, args ...interface{}) {
@@ -234,6 +256,7 @@ func (entry *Entry) Fatalln(args ...interface{}) {
 	if entry.Logger.Level >= FatalLevel {
 		entry.Fatal(entry.sprintlnn(args...))
 	}
+	Exit(1)
 }
 
 func (entry *Entry) Panicln(args ...interface{}) {

vendor/github.com/Sirupsen/logrus/exported.go

@@ -48,6 +48,11 @@ func AddHook(hook Hook) {
 	std.Hooks.Add(hook)
 }
 
+// WithError creates an entry from the standard logger and adds an error to it, using the value defined in ErrorKey as key.
+func WithError(err error) *Entry {
+	return std.WithField(ErrorKey, err)
+}
+
 // WithField creates an entry from the standard logger and adds a field to
 // it. If you want multiple fields, use `WithFields`.
 //

vendor/github.com/Sirupsen/logrus/formatter.go

@@ -31,18 +31,15 @@ type Formatter interface {
 // It's not exported because it's still using Data in an opinionated way. It's to
 // avoid code duplication between the two default formatters.
 func prefixFieldClashes(data Fields) {
-	_, ok := data["time"]
-	if ok {
-		data["fields.time"] = data["time"]
+	if t, ok := data["time"]; ok {
+		data["fields.time"] = t
 	}
 
-	_, ok = data["msg"]
-	if ok {
-		data["fields.msg"] = data["msg"]
+	if m, ok := data["msg"]; ok {
+		data["fields.msg"] = m
 	}
 
-	_, ok = data["level"]
-	if ok {
-		data["fields.level"] = data["level"]
+	if l, ok := data["level"]; ok {
+		data["fields.level"] = l
 	}
 }

vendor/github.com/Sirupsen/logrus/formatters/logstash/logstash.go

@@ -1,56 +0,0 @@
-package logstash
-
-import (
-	"encoding/json"
-	"fmt"
-
-	"github.com/Sirupsen/logrus"
-)
-
-// Formatter generates json in logstash format.
-// Logstash site: http://logstash.net/
-type LogstashFormatter struct {
-	Type string // if not empty use for logstash type field.
-
-	// TimestampFormat sets the format used for timestamps.
-	TimestampFormat string
-}
-
-func (f *LogstashFormatter) Format(entry *logrus.Entry) ([]byte, error) {
-	entry.Data["@version"] = 1
-
-	if f.TimestampFormat == "" {
-		f.TimestampFormat = logrus.DefaultTimestampFormat
-	}
-
-	entry.Data["@timestamp"] = entry.Time.Format(f.TimestampFormat)
-
-	// set message field
-	v, ok := entry.Data["message"]
-	if ok {
-		entry.Data["fields.message"] = v
-	}
-	entry.Data["message"] = entry.Message
-
-	// set level field
-	v, ok = entry.Data["level"]
-	if ok {
-		entry.Data["fields.level"] = v
-	}
-	entry.Data["level"] = entry.Level.String()
-
-	// set type field
-	if f.Type != "" {
-		v, ok = entry.Data["type"]
-		if ok {
-			entry.Data["fields.type"] = v
-		}
-		entry.Data["type"] = f.Type
-	}
-
-	serialized, err := json.Marshal(entry.Data)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
-	}
-	return append(serialized, '\n'), nil
-}

vendor/github.com/Sirupsen/logrus/hooks.go

@@ -11,11 +11,11 @@ type Hook interface {
 }
 
 // Internal type for storing the hooks on a logger instance.
-type levelHooks map[Level][]Hook
+type LevelHooks map[Level][]Hook
 
 // Add a hook to an instance of logger. This is called with
 // `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface.
-func (hooks levelHooks) Add(hook Hook) {
+func (hooks LevelHooks) Add(hook Hook) {
 	for _, level := range hook.Levels() {
 		hooks[level] = append(hooks[level], hook)
 	}
@@ -23,7 +23,7 @@ func (hooks levelHooks) Add(hook Hook) {
 
 // Fire all the hooks for the passed level. Used by `entry.log` to fire
 // appropriate hooks for a log entry.
-func (hooks levelHooks) Fire(level Level, entry *Entry) error {
+func (hooks LevelHooks) Fire(level Level, entry *Entry) error {
 	for _, hook := range hooks[level] {
 		if err := hook.Fire(entry); err != nil {
 			return err

vendor/github.com/Sirupsen/logrus/json_formatter.go

@@ -24,11 +24,12 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 	}
 	prefixFieldClashes(data)
 
-	if f.TimestampFormat == "" {
-		f.TimestampFormat = DefaultTimestampFormat
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = DefaultTimestampFormat
 	}
 
-	data["time"] = entry.Time.Format(f.TimestampFormat)
+	data["time"] = entry.Time.Format(timestampFormat)
 	data["msg"] = entry.Message
 	data["level"] = entry.Level.String()
 

vendor/github.com/Sirupsen/logrus/logger.go

@@ -8,13 +8,13 @@ import (
 
 type Logger struct {
 	// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
-	// file, or leave it default which is `os.Stdout`. You can also set this to
+	// file, or leave it default which is `os.Stderr`. You can also set this to
 	// something more adventorous, such as logging to Kafka.
 	Out io.Writer
 	// Hooks for the logger instance. These allow firing events based on logging
 	// levels and log entries. For example, to send errors to an error tracking
 	// service, log to StatsD or dump the core on fatal errors.
-	Hooks levelHooks
+	Hooks LevelHooks
 	// All log entries pass through the formatter before logged to Out. The
 	// included formatters are `TextFormatter` and `JSONFormatter` for which
 	// TextFormatter is the default. In development (when a TTY is attached) it
@@ -26,8 +26,31 @@ type Logger struct {
 	// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
 	// logged. `logrus.Debug` is useful in
 	Level Level
-	// Used to sync writing to the log.
-	mu sync.Mutex
+	// Used to sync writing to the log. Locking is enabled by Default
+	mu MutexWrap
+	// Reusable empty entry
+	entryPool sync.Pool
+}
+
+type MutexWrap struct {
+	lock     sync.Mutex
+	disabled bool
+}
+
+func (mw *MutexWrap) Lock() {
+	if !mw.disabled {
+		mw.lock.Lock()
+	}
+}
+
+func (mw *MutexWrap) Unlock() {
+	if !mw.disabled {
+		mw.lock.Unlock()
+	}
+}
+
+func (mw *MutexWrap) Disable() {
+	mw.disabled = true
 }
 
 // Creates a new logger. Configuration should be set by changing `Formatter`,
@@ -37,167 +60,249 @@ type Logger struct {
 //    var log = &Logger{
 //      Out: os.Stderr,
 //      Formatter: new(JSONFormatter),
-//      Hooks: make(levelHooks),
+//      Hooks: make(LevelHooks),
 //      Level: logrus.DebugLevel,
 //    }
 //
 // It's recommended to make this a global instance called `log`.
 func New() *Logger {
 	return &Logger{
-		Out:       os.Stdout,
+		Out:       os.Stderr,
 		Formatter: new(TextFormatter),
-		Hooks:     make(levelHooks),
+		Hooks:     make(LevelHooks),
 		Level:     InfoLevel,
 	}
 }
 
-// Adds a field to the log entry, note that you it doesn't log until you call
+func (logger *Logger) newEntry() *Entry {
+	entry, ok := logger.entryPool.Get().(*Entry)
+	if ok {
+		return entry
+	}
+	return NewEntry(logger)
+}
+
+func (logger *Logger) releaseEntry(entry *Entry) {
+	logger.entryPool.Put(entry)
+}
+
+// Adds a field to the log entry, note that it doesn't log until you call
 // Debug, Print, Info, Warn, Fatal or Panic. It only creates a log entry.
-// Ff you want multiple fields, use `WithFields`.
+// If you want multiple fields, use `WithFields`.
 func (logger *Logger) WithField(key string, value interface{}) *Entry {
-	return NewEntry(logger).WithField(key, value)
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithField(key, value)
 }
 
 // Adds a struct of fields to the log entry. All it does is call `WithField` for
 // each `Field`.
 func (logger *Logger) WithFields(fields Fields) *Entry {
-	return NewEntry(logger).WithFields(fields)
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithFields(fields)
+}
+
+// Add an error as single field to the log entry.  All it does is call
+// `WithError` for the given `error`.
+func (logger *Logger) WithError(err error) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithError(err)
 }
 
 func (logger *Logger) Debugf(format string, args ...interface{}) {
 	if logger.Level >= DebugLevel {
-		NewEntry(logger).Debugf(format, args...)
+		entry := logger.newEntry()
+		entry.Debugf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Infof(format string, args ...interface{}) {
 	if logger.Level >= InfoLevel {
-		NewEntry(logger).Infof(format, args...)
+		entry := logger.newEntry()
+		entry.Infof(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Printf(format string, args ...interface{}) {
-	NewEntry(logger).Printf(format, args...)
+	entry := logger.newEntry()
+	entry.Printf(format, args...)
+	logger.releaseEntry(entry)
 }
 
 func (logger *Logger) Warnf(format string, args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnf(format, args...)
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Warningf(format string, args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnf(format, args...)
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Errorf(format string, args ...interface{}) {
 	if logger.Level >= ErrorLevel {
-		NewEntry(logger).Errorf(format, args...)
+		entry := logger.newEntry()
+		entry.Errorf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Fatalf(format string, args ...interface{}) {
 	if logger.Level >= FatalLevel {
-		NewEntry(logger).Fatalf(format, args...)
+		entry := logger.newEntry()
+		entry.Fatalf(format, args...)
+		logger.releaseEntry(entry)
 	}
+	Exit(1)
 }
 
 func (logger *Logger) Panicf(format string, args ...interface{}) {
 	if logger.Level >= PanicLevel {
-		NewEntry(logger).Panicf(format, args...)
+		entry := logger.newEntry()
+		entry.Panicf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Debug(args ...interface{}) {
 	if logger.Level >= DebugLevel {
-		NewEntry(logger).Debug(args...)
+		entry := logger.newEntry()
+		entry.Debug(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Info(args ...interface{}) {
 	if logger.Level >= InfoLevel {
-		NewEntry(logger).Info(args...)
+		entry := logger.newEntry()
+		entry.Info(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Print(args ...interface{}) {
-	NewEntry(logger).Info(args...)
+	entry := logger.newEntry()
+	entry.Info(args...)
+	logger.releaseEntry(entry)
 }
 
 func (logger *Logger) Warn(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warn(args...)
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Warning(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warn(args...)
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Error(args ...interface{}) {
 	if logger.Level >= ErrorLevel {
-		NewEntry(logger).Error(args...)
+		entry := logger.newEntry()
+		entry.Error(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Fatal(args ...interface{}) {
 	if logger.Level >= FatalLevel {
-		NewEntry(logger).Fatal(args...)
+		entry := logger.newEntry()
+		entry.Fatal(args...)
+		logger.releaseEntry(entry)
 	}
+	Exit(1)
 }
 
 func (logger *Logger) Panic(args ...interface{}) {
 	if logger.Level >= PanicLevel {
-		NewEntry(logger).Panic(args...)
+		entry := logger.newEntry()
+		entry.Panic(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Debugln(args ...interface{}) {
 	if logger.Level >= DebugLevel {
-		NewEntry(logger).Debugln(args...)
+		entry := logger.newEntry()
+		entry.Debugln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Infoln(args ...interface{}) {
 	if logger.Level >= InfoLevel {
-		NewEntry(logger).Infoln(args...)
+		entry := logger.newEntry()
+		entry.Infoln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Println(args ...interface{}) {
-	NewEntry(logger).Println(args...)
+	entry := logger.newEntry()
+	entry.Println(args...)
+	logger.releaseEntry(entry)
 }
 
 func (logger *Logger) Warnln(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnln(args...)
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Warningln(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnln(args...)
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Errorln(args ...interface{}) {
 	if logger.Level >= ErrorLevel {
-		NewEntry(logger).Errorln(args...)
+		entry := logger.newEntry()
+		entry.Errorln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Fatalln(args ...interface{}) {
 	if logger.Level >= FatalLevel {
-		NewEntry(logger).Fatalln(args...)
+		entry := logger.newEntry()
+		entry.Fatalln(args...)
+		logger.releaseEntry(entry)
 	}
+	Exit(1)
 }
 
 func (logger *Logger) Panicln(args ...interface{}) {
 	if logger.Level >= PanicLevel {
-		NewEntry(logger).Panicln(args...)
+		entry := logger.newEntry()
+		entry.Panicln(args...)
+		logger.releaseEntry(entry)
 	}
 }
+
+//When file is opened with appending mode, it's safe to
+//write concurrently to a file (within 4k message on Linux).
+//In these cases user can choose to disable the lock.
+func (logger *Logger) SetNoLock() {
+	logger.mu.Disable()
+}

vendor/github.com/Sirupsen/logrus/logrus.go

@@ -3,6 +3,7 @@ package logrus
 import (
 	"fmt"
 	"log"
+	"strings"
 )
 
 // Fields type, used to pass to `WithFields`.
@@ -33,7 +34,7 @@ func (level Level) String() string {
 
 // ParseLevel takes a string level and returns the Logrus log level constant.
 func ParseLevel(lvl string) (Level, error) {
-	switch lvl {
+	switch strings.ToLower(lvl) {
 	case "panic":
 		return PanicLevel, nil
 	case "fatal":
@@ -52,6 +53,16 @@ func ParseLevel(lvl string) (Level, error) {
 	return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
 }
 
+// A constant exposing all logging levels
+var AllLevels = []Level{
+	PanicLevel,
+	FatalLevel,
+	ErrorLevel,
+	WarnLevel,
+	InfoLevel,
+	DebugLevel,
+}
+
 // These are the different logging levels. You can set the logging level to log
 // on your instance of logger, obtained with `logrus.New()`.
 const (
@@ -74,7 +85,11 @@ const (
 )
 
 // Won't compile if StdLogger can't be realized by a log.Logger
-var _ StdLogger = &log.Logger{}
+var (
+	_ StdLogger = &log.Logger{}
+	_ StdLogger = &Entry{}
+	_ StdLogger = &Logger{}
+)
 
 // StdLogger is what your logrus-enabled library should take, that way
 // it'll accept a stdlib logger and a logrus logger. There's no standard
@@ -92,3 +107,37 @@ type StdLogger interface {
 	Panicf(string, ...interface{})
 	Panicln(...interface{})
 }
+
+// The FieldLogger interface generalizes the Entry and Logger types
+type FieldLogger interface {
+	WithField(key string, value interface{}) *Entry
+	WithFields(fields Fields) *Entry
+	WithError(err error) *Entry
+
+	Debugf(format string, args ...interface{})
+	Infof(format string, args ...interface{})
+	Printf(format string, args ...interface{})
+	Warnf(format string, args ...interface{})
+	Warningf(format string, args ...interface{})
+	Errorf(format string, args ...interface{})
+	Fatalf(format string, args ...interface{})
+	Panicf(format string, args ...interface{})
+
+	Debug(args ...interface{})
+	Info(args ...interface{})
+	Print(args ...interface{})
+	Warn(args ...interface{})
+	Warning(args ...interface{})
+	Error(args ...interface{})
+	Fatal(args ...interface{})
+	Panic(args ...interface{})
+
+	Debugln(args ...interface{})
+	Infoln(args ...interface{})
+	Println(args ...interface{})
+	Warnln(args ...interface{})
+	Warningln(args ...interface{})
+	Errorln(args ...interface{})
+	Fatalln(args ...interface{})
+	Panicln(args ...interface{})
+}

vendor/github.com/Sirupsen/logrus/terminal_appengine.go

@@ -0,0 +1,8 @@
+// +build appengine
+
+package logrus
+
+// IsTerminal returns true if stderr's file descriptor is a terminal.
+func IsTerminal() bool {
+	return true
+}

vendor/github.com/Sirupsen/logrus/terminal_bsd.go

@@ -1,3 +1,6 @@
+// +build darwin freebsd openbsd netbsd dragonfly
+// +build !appengine
+
 package logrus
 
 import "syscall"

vendor/github.com/Sirupsen/logrus/terminal_darwin.go

@@ -1,12 +0,0 @@
-// Based on ssh/terminal:
-// 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.
-
-package logrus
-
-import "syscall"
-
-const ioctlReadTermios = syscall.TIOCGETA
-
-type Termios syscall.Termios

vendor/github.com/Sirupsen/logrus/terminal_freebsd.go

@@ -1,20 +0,0 @@
-/*
-  Go 1.2 doesn't include Termios for FreeBSD. This should be added in 1.3 and this could be merged with terminal_darwin.
-*/
-package logrus
-
-import (
-	"syscall"
-)
-
-const ioctlReadTermios = syscall.TIOCGETA
-
-type Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed uint32
-	Ospeed uint32
-}

vendor/github.com/Sirupsen/logrus/terminal_linux.go

@@ -3,6 +3,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !appengine
+
 package logrus
 
 import "syscall"

vendor/github.com/Sirupsen/logrus/terminal_notwindows.go

@@ -3,7 +3,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build linux darwin freebsd openbsd
+// +build linux darwin freebsd openbsd netbsd dragonfly
+// +build !appengine
 
 package logrus
 
@@ -12,9 +13,9 @@ import (
 	"unsafe"
 )
 
-// IsTerminal returns true if the given file descriptor is a terminal.
+// IsTerminal returns true if stderr's file descriptor is a terminal.
 func IsTerminal() bool {
-	fd := syscall.Stdout
+	fd := syscall.Stderr
 	var termios Termios
 	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
 	return err == 0

vendor/github.com/Sirupsen/logrus/terminal_solaris.go

@@ -0,0 +1,15 @@
+// +build solaris,!appengine
+
+package logrus
+
+import (
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal() bool {
+	_, err := unix.IoctlGetTermios(int(os.Stdout.Fd()), unix.TCGETA)
+	return err == nil
+}

vendor/github.com/Sirupsen/logrus/terminal_windows.go

@@ -3,7 +3,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build windows
+// +build windows,!appengine
 
 package logrus
 
@@ -18,9 +18,9 @@ var (
 	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
 )
 
-// IsTerminal returns true if the given file descriptor is a terminal.
+// IsTerminal returns true if stderr's file descriptor is a terminal.
 func IsTerminal() bool {
-	fd := syscall.Stdout
+	fd := syscall.Stderr
 	var st uint32
 	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
 	return r != 0 && e == 0

vendor/github.com/Sirupsen/logrus/text_formatter.go

@@ -3,6 +3,7 @@ package logrus
 import (
 	"bytes"
 	"fmt"
+	"runtime"
 	"sort"
 	"strings"
 	"time"
@@ -56,6 +57,7 @@ type TextFormatter struct {
 }
 
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
+	var b *bytes.Buffer
 	var keys []string = make([]string, 0, len(entry.Data))
 	for k := range entry.Data {
 		keys = append(keys, k)
@@ -64,24 +66,31 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	if !f.DisableSorting {
 		sort.Strings(keys)
 	}
-
-	b := &bytes.Buffer{}
+	if entry.Buffer != nil {
+		b = entry.Buffer
+	} else {
+		b = &bytes.Buffer{}
+	}
 
 	prefixFieldClashes(entry.Data)
 
-	isColored := (f.ForceColors || isTerminal) && !f.DisableColors
+	isColorTerminal := isTerminal && (runtime.GOOS != "windows")
+	isColored := (f.ForceColors || isColorTerminal) && !f.DisableColors
 
-	if f.TimestampFormat == "" {
-		f.TimestampFormat = DefaultTimestampFormat
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = DefaultTimestampFormat
 	}
 	if isColored {
-		f.printColored(b, entry, keys)
+		f.printColored(b, entry, keys, timestampFormat)
 	} else {
 		if !f.DisableTimestamp {
-			f.appendKeyValue(b, "time", entry.Time.Format(f.TimestampFormat))
+			f.appendKeyValue(b, "time", entry.Time.Format(timestampFormat))
 		}
 		f.appendKeyValue(b, "level", entry.Level.String())
-		f.appendKeyValue(b, "msg", entry.Message)
+		if entry.Message != "" {
+			f.appendKeyValue(b, "msg", entry.Message)
+		}
 		for _, key := range keys {
 			f.appendKeyValue(b, key, entry.Data[key])
 		}
@@ -91,7 +100,7 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	return b.Bytes(), nil
 }
 
-func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string) {
+func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string, timestampFormat string) {
 	var levelColor int
 	switch entry.Level {
 	case DebugLevel:
@@ -109,11 +118,12 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 	if !f.FullTimestamp {
 		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d] %-44s ", levelColor, levelText, miniTS(), entry.Message)
 	} else {
-		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s] %-44s ", levelColor, levelText, entry.Time.Format(f.TimestampFormat), entry.Message)
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s] %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), entry.Message)
 	}
 	for _, k := range keys {
 		v := entry.Data[k]
-		fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=%v", levelColor, k, v)
+		fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
+		f.appendValue(b, v)
 	}
 }
 
@@ -123,27 +133,36 @@ func needsQuoting(text string) bool {
 			(ch >= 'A' && ch <= 'Z') ||
 			(ch >= '0' && ch <= '9') ||
 			ch == '-' || ch == '.') {
-			return false
+			return true
 		}
 	}
-	return true
+	return false
 }
 
-func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key, value interface{}) {
-	switch value.(type) {
+func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
+
+	b.WriteString(key)
+	b.WriteByte('=')
+	f.appendValue(b, value)
+	b.WriteByte(' ')
+}
+
+func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
+	switch value := value.(type) {
 	case string:
-		if needsQuoting(value.(string)) {
-			fmt.Fprintf(b, "%v=%s ", key, value)
+		if !needsQuoting(value) {
+			b.WriteString(value)
 		} else {
-			fmt.Fprintf(b, "%v=%q ", key, value)
+			fmt.Fprintf(b, "%q", value)
 		}
 	case error:
-		if needsQuoting(value.(error).Error()) {
-			fmt.Fprintf(b, "%v=%s ", key, value)
+		errmsg := value.Error()
+		if !needsQuoting(errmsg) {
+			b.WriteString(errmsg)
 		} else {
-			fmt.Fprintf(b, "%v=%q ", key, value)
+			fmt.Fprintf(b, "%q", errmsg)
 		}
 	default:
-		fmt.Fprintf(b, "%v=%v ", key, value)
+		fmt.Fprint(b, value)
 	}
 }

vendor/github.com/Sirupsen/logrus/writer.go

@@ -7,18 +7,40 @@ import (
 )
 
 func (logger *Logger) Writer() *io.PipeWriter {
+	return logger.WriterLevel(InfoLevel)
+}
+
+func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
 	reader, writer := io.Pipe()
 
-	go logger.writerScanner(reader)
+	var printFunc func(args ...interface{})
+	switch level {
+	case DebugLevel:
+		printFunc = logger.Debug
+	case InfoLevel:
+		printFunc = logger.Info
+	case WarnLevel:
+		printFunc = logger.Warn
+	case ErrorLevel:
+		printFunc = logger.Error
+	case FatalLevel:
+		printFunc = logger.Fatal
+	case PanicLevel:
+		printFunc = logger.Panic
+	default:
+		printFunc = logger.Print
+	}
+
+	go logger.writerScanner(reader, printFunc)
 	runtime.SetFinalizer(writer, writerFinalizer)
 
 	return writer
 }
 
-func (logger *Logger) writerScanner(reader *io.PipeReader) {
+func (logger *Logger) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
 	scanner := bufio.NewScanner(reader)
 	for scanner.Scan() {
-		logger.Print(scanner.Text())
+		printFunc(scanner.Text())
 	}
 	if err := scanner.Err(); err != nil {
 		logger.Errorf("Error while reading from Writer: %s", err)

vendor/github.com/bshuster-repo/logrus-logstash-hook/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Boaz Shuster
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/bshuster-repo/logrus-logstash-hook/logstash.go

@@ -0,0 +1,129 @@
+package logrus_logstash
+
+import (
+	"net"
+	"strings"
+
+	"github.com/Sirupsen/logrus"
+)
+
+// Hook represents a connection to a Logstash instance
+type Hook struct {
+	conn             net.Conn
+	appName          string
+	alwaysSentFields logrus.Fields
+	hookOnlyPrefix   string
+}
+
+// NewHook creates a new hook to a Logstash instance, which listens on
+// `protocol`://`address`.
+func NewHook(protocol, address, appName string) (*Hook, error) {
+	return NewHookWithFields(protocol, address, appName, make(logrus.Fields))
+}
+
+// NewHookWithConn creates a new hook to a Logstash instance, using the supplied connection
+func NewHookWithConn(conn net.Conn, appName string) (*Hook, error) {
+	return NewHookWithFieldsAndConn(conn, appName, make(logrus.Fields))
+}
+
+// NewHookWithFields creates a new hook to a Logstash instance, which listens on
+// `protocol`://`address`. alwaysSentFields will be sent with every log entry.
+func NewHookWithFields(protocol, address, appName string, alwaysSentFields logrus.Fields) (*Hook, error) {
+	return NewHookWithFieldsAndPrefix(protocol, address, appName, alwaysSentFields, "")
+}
+
+// NewHookWithFieldsAndPrefix creates a new hook to a Logstash instance, which listens on
+// `protocol`://`address`. alwaysSentFields will be sent with every log entry. prefix is used to select fields to filter
+func NewHookWithFieldsAndPrefix(protocol, address, appName string, alwaysSentFields logrus.Fields, prefix string) (*Hook, error) {
+	conn, err := net.Dial(protocol, address)
+	if err != nil {
+		return nil, err
+	}
+	return NewHookWithFieldsAndConnAndPrefix(conn, appName, alwaysSentFields, prefix)
+}
+
+// NewHookWithFieldsAndConn creates a new hook to a Logstash instance using the supplied connection
+func NewHookWithFieldsAndConn(conn net.Conn, appName string, alwaysSentFields logrus.Fields) (*Hook, error) {
+	return NewHookWithFieldsAndConnAndPrefix(conn, appName, alwaysSentFields, "")
+}
+
+//NewHookWithFieldsAndConnAndPrefix creates a new hook to a Logstash instance using the suppolied connection and prefix
+func NewHookWithFieldsAndConnAndPrefix(conn net.Conn, appName string, alwaysSentFields logrus.Fields, prefix string) (*Hook, error) {
+	return &Hook{conn: conn, appName: appName, alwaysSentFields: alwaysSentFields, hookOnlyPrefix: prefix}, nil
+}
+
+//NewFilterHook makes a new hook which does not forward to logstash, but simply enforces the prefix rules
+func NewFilterHook() *Hook {
+	return NewFilterHookWithPrefix("")
+}
+
+//NewFilterHookWithPrefix make a new hook which does not forward to logstash, but simply enforces the specified prefix
+func NewFilterHookWithPrefix(prefix string) *Hook {
+	return &Hook{conn: nil, appName: "", alwaysSentFields: make(logrus.Fields), hookOnlyPrefix: prefix}
+}
+
+func (h *Hook) filterHookOnly(entry *logrus.Entry) {
+	if h.hookOnlyPrefix != "" {
+		for key := range entry.Data {
+			if strings.HasPrefix(key, h.hookOnlyPrefix) {
+				delete(entry.Data, key)
+			}
+		}
+	}
+
+}
+
+//WithPrefix sets a prefix filter to use in all subsequent logging
+func (h *Hook) WithPrefix(prefix string) {
+	h.hookOnlyPrefix = prefix
+}
+
+func (h *Hook) WithField(key string, value interface{}) {
+	h.alwaysSentFields[key] = value
+}
+
+func (h *Hook) WithFields(fields logrus.Fields) {
+	//Add all the new fields to the 'alwaysSentFields', possibly overwriting exising fields
+	for key, value := range fields {
+		h.alwaysSentFields[key] = value
+	}
+}
+
+func (h *Hook) Fire(entry *logrus.Entry) error {
+	//make sure we always clear the hookonly fields from the entry
+	defer h.filterHookOnly(entry)
+
+	// Add in the alwaysSentFields. We don't override fields that are already set.
+	for k, v := range h.alwaysSentFields {
+		if _, inMap := entry.Data[k]; !inMap {
+			entry.Data[k] = v
+		}
+	}
+
+	//For a filteringHook, stop here
+	if h.conn == nil {
+		return nil
+	}
+
+	formatter := LogstashFormatter{Type: h.appName}
+
+	dataBytes, err := formatter.FormatWithPrefix(entry, h.hookOnlyPrefix)
+	if err != nil {
+		return err
+	}
+	if _, err = h.conn.Write(dataBytes); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (h *Hook) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.PanicLevel,
+		logrus.FatalLevel,
+		logrus.ErrorLevel,
+		logrus.WarnLevel,
+		logrus.InfoLevel,
+		logrus.DebugLevel,
+	}
+}

vendor/github.com/bshuster-repo/logrus-logstash-hook/logstash_formatter.go

@@ -0,0 +1,81 @@
+package logrus_logstash
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/Sirupsen/logrus"
+)
+
+// Formatter generates json in logstash format.
+// Logstash site: http://logstash.net/
+type LogstashFormatter struct {
+	Type string // if not empty use for logstash type field.
+
+	// TimestampFormat sets the format used for timestamps.
+	TimestampFormat string
+}
+
+func (f *LogstashFormatter) Format(entry *logrus.Entry) ([]byte, error) {
+	return f.FormatWithPrefix(entry, "")
+}
+
+func (f *LogstashFormatter) FormatWithPrefix(entry *logrus.Entry, prefix string) ([]byte, error) {
+	fields := make(logrus.Fields)
+	for k, v := range entry.Data {
+		//remvove the prefix when sending the fields to logstash
+		if prefix != "" && strings.HasPrefix(k, prefix) {
+			k = strings.TrimPrefix(k, prefix)
+		}
+
+		switch v := v.(type) {
+		case error:
+			// Otherwise errors are ignored by `encoding/json`
+			// https://github.com/Sirupsen/logrus/issues/377
+			fields[k] = v.Error()
+		default:
+			fields[k] = v
+		}
+	}
+
+	fields["@version"] = "1"
+
+	timeStampFormat := f.TimestampFormat
+
+	if timeStampFormat == "" {
+		//timeStampFormat = logrus.DefaultTimestampFormat
+		timeStampFormat = "2006-01-02 15:04:05.000"
+	}
+
+	fields["@timestamp"] = entry.Time.Format(timeStampFormat)
+
+	// set message field
+	v, ok := entry.Data["message"]
+	if ok {
+		fields["fields.message"] = v
+	}
+	fields["message"] = entry.Message
+
+	// set level field
+	v, ok = entry.Data["level"]
+	if ok {
+		fields["fields.level"] = v
+	}
+	fields["level"] = entry.Level.String()
+
+	// set type field
+	if f.Type != "" {
+		v, ok = entry.Data["type"]
+		if ok {
+			fields["fields.type"] = v
+		}
+		fields["type"] = f.Type
+	}
+
+	serialized, err := json.Marshal(fields)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+	}
+	return append(serialized, '\n'), nil
+}