1 files changed, 0 insertions, 458 deletions
diff --git a/vendor/github.com/getlantern/golog/golog.go b/vendor/github.com/getlantern/golog/golog.go
deleted file mode 100644
index 143e904..0000000
--- a/vendor/github.com/getlantern/golog/golog.go
+++ /dev/null
@@ -1,458 +0,0 @@
-// Package golog implements logging functions that log errors to stderr and
-// debug messages to stdout. Trace logging is also supported.
-// Trace logs go to stdout as well, but they are only written if the program
-// is run with environment variable "TRACE=true".
-// A stack dump will be printed after the message if "PRINT_STACK=true".
-package golog
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"log"
-	"os"
-	"path/filepath"
-	"runtime"
-	"sort"
-	"strconv"
-	"strings"
-	"sync"
-	"sync/atomic"
-
-	"github.com/getlantern/errors"
-	"github.com/getlantern/hidden"
-	"github.com/getlantern/ops"
-	"github.com/oxtoacart/bpool"
-)
-
-const (
-	// ERROR is an error Severity
-	ERROR = 500
-
-	// FATAL is an error Severity
-	FATAL = 600
-)
-
-var (
-	outs           atomic.Value
-	reporters      []ErrorReporter
-	reportersMutex sync.RWMutex
-
-	bufferPool = bpool.NewBufferPool(200)
-
-	onFatal atomic.Value
-)
-
-// Severity is a level of error (higher values are more severe)
-type Severity int
-
-func (s Severity) String() string {
-	switch s {
-	case ERROR:
-		return "ERROR"
-	case FATAL:
-		return "FATAL"
-	default:
-		return "UNKNOWN"
-	}
-}
-
-func init() {
-	DefaultOnFatal()
-	ResetOutputs()
-}
-
-func SetOutputs(errorOut io.Writer, debugOut io.Writer) {
-	outs.Store(&outputs{
-		ErrorOut: errorOut,
-		DebugOut: debugOut,
-	})
-}
-
-func ResetOutputs() {
-	SetOutputs(os.Stderr, os.Stdout)
-}
-
-func GetOutputs() *outputs {
-	return outs.Load().(*outputs)
-}
-
-// RegisterReporter registers the given ErrorReporter. All logged Errors are
-// sent to this reporter.
-func RegisterReporter(reporter ErrorReporter) {
-	reportersMutex.Lock()
-	reporters = append(reporters, reporter)
-	reportersMutex.Unlock()
-}
-
-// OnFatal configures golog to call the given function on any FATAL error. By
-// default, golog calls os.Exit(1) on any FATAL error.
-func OnFatal(fn func(err error)) {
-	onFatal.Store(fn)
-}
-
-// DefaultOnFatal enables the default behavior for OnFatal
-func DefaultOnFatal() {
-	onFatal.Store(func(err error) {
-		os.Exit(1)
-	})
-}
-
-type outputs struct {
-	ErrorOut io.Writer
-	DebugOut io.Writer
-}
-
-// MultiLine is an interface for arguments that support multi-line output.
-type MultiLine interface {
-	// MultiLinePrinter returns a function that can be used to print the
-	// multi-line output. The returned function writes one line to the buffer and
-	// returns true if there are more lines to write. This function does not need
-	// to take care of trailing carriage returns, golog handles that
-	// automatically.
-	MultiLinePrinter() func(buf *bytes.Buffer) bool
-}
-
-// ErrorReporter is a function to which the logger will report errors.
-// It the given error and corresponding message along with associated ops
-// context. This should return quickly as it executes on the critical code
-// path. The recommended approach is to buffer as much as possible and discard
-// new reports if the buffer becomes saturated.
-type ErrorReporter func(err error, linePrefix string, severity Severity, ctx map[string]interface{})
-
-type Logger interface {
-	// Debug logs to stdout
-	Debug(arg interface{})
-	// Debugf logs to stdout
-	Debugf(message string, args ...interface{})
-
-	// Error logs to stderr
-	Error(arg interface{}) error
-	// Errorf logs to stderr. It returns the first argument that's an error, or
-	// a new error built using fmt.Errorf if none of the arguments are errors.
-	Errorf(message string, args ...interface{}) error
-
-	// Fatal logs to stderr and then exits with status 1
-	Fatal(arg interface{})
-	// Fatalf logs to stderr and then exits with status 1
-	Fatalf(message string, args ...interface{})
-
-	// Trace logs to stderr only if TRACE=true
-	Trace(arg interface{})
-	// Tracef logs to stderr only if TRACE=true
-	Tracef(message string, args ...interface{})
-
-	// TraceOut provides access to an io.Writer to which trace information can
-	// be streamed. If running with environment variable "TRACE=true", TraceOut
-	// will point to os.Stderr, otherwise it will point to a ioutil.Discared.
-	// Each line of trace information will be prefixed with this Logger's
-	// prefix.
-	TraceOut() io.Writer
-
-	// IsTraceEnabled() indicates whether or not tracing is enabled for this
-	// logger.
-	IsTraceEnabled() bool
-
-	// AsStdLogger returns an standard logger
-	AsStdLogger() *log.Logger
-}
-
-func LoggerFor(prefix string) Logger {
-	l := &logger{
-		prefix: prefix + ": ",
-		pc:     make([]uintptr, 10),
-	}
-
-	trace := os.Getenv("TRACE")
-	l.traceOn, _ = strconv.ParseBool(trace)
-	if !l.traceOn {
-		prefixes := strings.Split(trace, ",")
-		for _, p := range prefixes {
-			if prefix == strings.Trim(p, " ") {
-				l.traceOn = true
-				break
-			}
-		}
-	}
-	if l.traceOn {
-		l.traceOut = l.newTraceWriter()
-	} else {
-		l.traceOut = ioutil.Discard
-	}
-
-	printStack := os.Getenv("PRINT_STACK")
-	l.printStack, _ = strconv.ParseBool(printStack)
-
-	return l
-}
-
-type logger struct {
-	prefix     string
-	traceOn    bool
-	traceOut   io.Writer
-	printStack bool
-	outs       atomic.Value
-	pc         []uintptr
-	funcForPc  *runtime.Func
-}
-
-// attaches the file and line number corresponding to
-// the log message
-func (l *logger) linePrefix(skipFrames int) string {
-	runtime.Callers(skipFrames, l.pc)
-	funcForPc := runtime.FuncForPC(l.pc[0])
-	file, line := funcForPc.FileLine(l.pc[0] - 1)
-	return fmt.Sprintf("%s%s:%d ", l.prefix, filepath.Base(file), line)
-}
-
-func (l *logger) print(out io.Writer, skipFrames int, severity string, arg interface{}) string {
-	buf := bufferPool.Get()
-	defer bufferPool.Put(buf)
-
-	linePrefix := l.linePrefix(skipFrames)
-	writeHeader := func() {
-		buf.WriteString(severity)
-		buf.WriteString(" ")
-		buf.WriteString(linePrefix)
-	}
-	if arg != nil {
-		ml, isMultiline := arg.(MultiLine)
-		if !isMultiline {
-			writeHeader()
-			fmt.Fprintf(buf, "%v", arg)
-			printContext(buf, arg)
-			buf.WriteByte('\n')
-		} else {
-			mlp := ml.MultiLinePrinter()
-			first := true
-			for {
-				writeHeader()
-				more := mlp(buf)
-				if first {
-					printContext(buf, arg)
-					first = false
-				}
-				buf.WriteByte('\n')
-				if !more {
-					break
-				}
-			}
-		}
-	}
-	b := []byte(hidden.Clean(buf.String()))
-	_, err := out.Write(b)
-	if err != nil {
-		errorOnLogging(err)
-	}
-	if l.printStack {
-		l.doPrintStack()
-	}
-
-	return linePrefix
-}
-
-func (l *logger) printf(out io.Writer, skipFrames int, severity string, err error, message string, args ...interface{}) string {
-	buf := bufferPool.Get()
-	defer bufferPool.Put(buf)
-
-	linePrefix := l.linePrefix(skipFrames)
-	buf.WriteString(severity)
-	buf.WriteString(" ")
-	buf.WriteString(linePrefix)
-	fmt.Fprintf(buf, message, args...)
-	printContext(buf, err)
-	buf.WriteByte('\n')
-	b := []byte(hidden.Clean(buf.String()))
-	_, err2 := out.Write(b)
-	if err2 != nil {
-		errorOnLogging(err)
-	}
-	if l.printStack {
-		l.doPrintStack()
-	}
-	return linePrefix
-}
-
-func (l *logger) Debug(arg interface{}) {
-	l.print(GetOutputs().DebugOut, 4, "DEBUG", arg)
-}
-
-func (l *logger) Debugf(message string, args ...interface{}) {
-	l.printf(GetOutputs().DebugOut, 4, "DEBUG", nil, message, args...)
-}
-
-func (l *logger) Error(arg interface{}) error {
-	return l.errorSkipFrames(arg, 1, ERROR)
-}
-
-func (l *logger) Errorf(message string, args ...interface{}) error {
-	return l.errorSkipFrames(errors.NewOffset(1, message, args...), 1, ERROR)
-}
-
-func (l *logger) Fatal(arg interface{}) {
-	fatal(l.errorSkipFrames(arg, 1, FATAL))
-}
-
-func (l *logger) Fatalf(message string, args ...interface{}) {
-	fatal(l.errorSkipFrames(errors.NewOffset(1, message, args...), 1, FATAL))
-}
-
-func fatal(err error) {
-	fn := onFatal.Load().(func(err error))
-	fn(err)
-}
-
-func (l *logger) errorSkipFrames(arg interface{}, skipFrames int, severity Severity) error {
-	var err error
-	switch e := arg.(type) {
-	case error:
-		err = e
-	default:
-		err = fmt.Errorf("%v", e)
-	}
-	linePrefix := l.print(GetOutputs().ErrorOut, skipFrames+4, severity.String(), err)
-	return report(err, linePrefix, severity)
-}
-
-func (l *logger) Trace(arg interface{}) {
-	if l.traceOn {
-		l.print(GetOutputs().DebugOut, 4, "TRACE", arg)
-	}
-}
-
-func (l *logger) Tracef(message string, args ...interface{}) {
-	if l.traceOn {
-		l.printf(GetOutputs().DebugOut, 4, "TRACE", nil, message, args...)
-	}
-}
-
-func (l *logger) TraceOut() io.Writer {
-	return l.traceOut
-}
-
-func (l *logger) IsTraceEnabled() bool {
-	return l.traceOn
-}
-
-func (l *logger) newTraceWriter() io.Writer {
-	pr, pw := io.Pipe()
-	br := bufio.NewReader(pr)
-
-	if !l.traceOn {
-		return pw
-	}
-	go func() {
-		defer func() {
-			if err := pr.Close(); err != nil {
-				errorOnLogging(err)
-			}
-		}()
-		defer func() {
-			if err := pw.Close(); err != nil {
-				errorOnLogging(err)
-			}
-		}()
-
-		for {
-			line, err := br.ReadString('\n')
-			if err == nil {
-				// Log the line (minus the trailing newline)
-				l.print(GetOutputs().DebugOut, 6, "TRACE", line[:len(line)-1])
-			} else {
-				l.printf(GetOutputs().DebugOut, 6, "TRACE", nil, "TraceWriter closed due to unexpected error: %v", err)
-				return
-			}
-		}
-	}()
-
-	return pw
-}
-
-type errorWriter struct {
-	l *logger
-}
-
-// Write implements method of io.Writer, due to different call depth,
-// it will not log correct file and line prefix
-func (w *errorWriter) Write(p []byte) (n int, err error) {
-	s := string(p)
-	if s[len(s)-1] == '\n' {
-		s = s[:len(s)-1]
-	}
-	w.l.print(GetOutputs().ErrorOut, 6, "ERROR", s)
-	return len(p), nil
-}
-
-func (l *logger) AsStdLogger() *log.Logger {
-	return log.New(&errorWriter{l}, "", 0)
-}
-
-func (l *logger) doPrintStack() {
-	var b []byte
-	buf := bytes.NewBuffer(b)
-	for _, pc := range l.pc {
-		funcForPc := runtime.FuncForPC(pc)
-		if funcForPc == nil {
-			break
-		}
-		name := funcForPc.Name()
-		if strings.HasPrefix(name, "runtime.") {
-			break
-		}
-		file, line := funcForPc.FileLine(pc)
-		fmt.Fprintf(buf, "\t%s\t%s: %d\n", name, file, line)
-	}
-	if _, err := buf.WriteTo(os.Stderr); err != nil {
-		errorOnLogging(err)
-	}
-}
-
-func errorOnLogging(err error) {
-	fmt.Fprintf(os.Stderr, "Unable to log: %v\n", err)
-}
-
-func printContext(buf *bytes.Buffer, err interface{}) {
-	// Note - we don't include globals when printing in order to avoid polluting the text log
-	values := ops.AsMap(err, false)
-	if len(values) == 0 {
-		return
-	}
-	buf.WriteString(" [")
-	var keys []string
-	for key := range values {
-		keys = append(keys, key)
-	}
-	sort.Strings(keys)
-	for i, key := range keys {
-		value := values[key]
-		if i > 0 {
-			buf.WriteString(" ")
-		}
-		buf.WriteString(key)
-		buf.WriteString("=")
-		fmt.Fprintf(buf, "%v", value)
-	}
-	buf.WriteByte(']')
-}
-
-func report(err error, linePrefix string, severity Severity) error {
-	var reportersCopy []ErrorReporter
-	reportersMutex.RLock()
-	if len(reporters) > 0 {
-		reportersCopy = make([]ErrorReporter, len(reporters))
-		copy(reportersCopy, reporters)
-	}
-	reportersMutex.RUnlock()
-
-	if len(reportersCopy) > 0 {
-		ctx := ops.AsMap(err, true)
-		ctx["severity"] = severity.String()
-		for _, reporter := range reportersCopy {
-			// We include globals when reporting
-			reporter(err, linePrefix, severity, ctx)
-		}
-	}
-	return err
-}