Make Nix builds work

1 files changed, 442 insertions, 0 deletions

diff --git a/vendor/github.com/sirupsen/logrus/entry.go b/vendor/github.com/sirupsen/logrus/entry.go
new file mode 100644
index 0000000..71cdbbc
--- /dev/null
+++ b/vendor/github.com/sirupsen/logrus/entry.go
@@ -0,0 +1,442 @@
+package logrus
+
+import (
+        "bytes"
+        "context"
+        "fmt"
+        "os"
+        "reflect"
+        "runtime"
+        "strings"
+        "sync"
+        "time"
+)
+
+var (
+
+        // qualified package name, cached at first use
+        logrusPackage string
+
+        // Positions in the call stack when tracing to report the calling method
+        minimumCallerDepth int
+
+        // Used for caller information initialisation
+        callerInitOnce sync.Once
+)
+
+const (
+        maximumCallerDepth int = 25
+        knownLogrusFrames  int = 4
+)
+
+func init() {
+        // start at the bottom of the stack before the package-name cache is primed
+        minimumCallerDepth = 1
+}
+
+// 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 Trace, Debug,
+// Info, Warn, Error, Fatal or Panic is called on it. These objects can be
+// reused and passed around as much as you wish to avoid field duplication.
+type Entry struct {
+        Logger *Logger
+
+        // Contains all the fields set by the user.
+        Data Fields
+
+        // Time at which the log entry was created
+        Time time.Time
+
+        // Level the log entry was logged at: Trace, Debug, Info, Warn, Error, Fatal or Panic
+        // This field will be set on entry firing and the value will be equal to the one in Logger struct field.
+        Level Level
+
+        // Calling method, with package name
+        Caller *runtime.Frame
+
+        // Message passed to Trace, Debug, Info, Warn, Error, Fatal or Panic
+        Message string
+
+        // When formatter is called in entry.log(), a Buffer may be set to entry
+        Buffer *bytes.Buffer
+
+        // Contains the context set by the user. Useful for hook processing etc.
+        Context context.Context
+
+        // err may contain a field formatting error
+        err string
+}
+
+func NewEntry(logger *Logger) *Entry {
+        return &Entry{
+                Logger: logger,
+                // Default is three fields, plus one optional.  Give a little extra room.
+                Data: make(Fields, 6),
+        }
+}
+
+func (entry *Entry) Dup() *Entry {
+        data := make(Fields, len(entry.Data))
+        for k, v := range entry.Data {
+                data[k] = v
+        }
+        return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, Context: entry.Context, err: entry.err}
+}
+
+// Returns the bytes representation of this entry from the formatter.
+func (entry *Entry) Bytes() ([]byte, error) {
+        return entry.Logger.Formatter.Format(entry)
+}
+
+// Returns the string representation from the reader and ultimately the
+// formatter.
+func (entry *Entry) String() (string, error) {
+        serialized, err := entry.Bytes()
+        if err != nil {
+                return "", err
+        }
+        str := string(serialized)
+        return str, nil
+}
+
+// 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 context to the Entry.
+func (entry *Entry) WithContext(ctx context.Context) *Entry {
+        dataCopy := make(Fields, len(entry.Data))
+        for k, v := range entry.Data {
+                dataCopy[k] = v
+        }
+        return &Entry{Logger: entry.Logger, Data: dataCopy, Time: entry.Time, err: entry.err, Context: ctx}
+}
+
+// Add a single field to the Entry.
+func (entry *Entry) WithField(key string, value interface{}) *Entry {
+        return entry.WithFields(Fields{key: value})
+}
+
+// Add a map of fields to the Entry.
+func (entry *Entry) WithFields(fields Fields) *Entry {
+        data := make(Fields, len(entry.Data)+len(fields))
+        for k, v := range entry.Data {
+                data[k] = v
+        }
+        fieldErr := entry.err
+        for k, v := range fields {
+                isErrField := false
+                if t := reflect.TypeOf(v); t != nil {
+                        switch {
+                        case t.Kind() == reflect.Func, t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Func:
+                                isErrField = true
+                        }
+                }
+                if isErrField {
+                        tmp := fmt.Sprintf("can not add field %q", k)
+                        if fieldErr != "" {
+                                fieldErr = entry.err + ", " + tmp
+                        } else {
+                                fieldErr = tmp
+                        }
+                } else {
+                        data[k] = v
+                }
+        }
+        return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: fieldErr, Context: entry.Context}
+}
+
+// Overrides the time of the Entry.
+func (entry *Entry) WithTime(t time.Time) *Entry {
+        dataCopy := make(Fields, len(entry.Data))
+        for k, v := range entry.Data {
+                dataCopy[k] = v
+        }
+        return &Entry{Logger: entry.Logger, Data: dataCopy, Time: t, err: entry.err, Context: entry.Context}
+}
+
+// getPackageName reduces a fully qualified function name to the package name
+// There really ought to be to be a better way...
+func getPackageName(f string) string {
+        for {
+                lastPeriod := strings.LastIndex(f, ".")
+                lastSlash := strings.LastIndex(f, "/")
+                if lastPeriod > lastSlash {
+                        f = f[:lastPeriod]
+                } else {
+                        break
+                }
+        }
+
+        return f
+}
+
+// getCaller retrieves the name of the first non-logrus calling function
+func getCaller() *runtime.Frame {
+        // cache this package's fully-qualified name
+        callerInitOnce.Do(func() {
+                pcs := make([]uintptr, maximumCallerDepth)
+                _ = runtime.Callers(0, pcs)
+
+                // dynamic get the package name and the minimum caller depth
+                for i := 0; i < maximumCallerDepth; i++ {
+                        funcName := runtime.FuncForPC(pcs[i]).Name()
+                        if strings.Contains(funcName, "getCaller") {
+                                logrusPackage = getPackageName(funcName)
+                                break
+                        }
+                }
+
+                minimumCallerDepth = knownLogrusFrames
+        })
+
+        // Restrict the lookback frames to avoid runaway lookups
+        pcs := make([]uintptr, maximumCallerDepth)
+        depth := runtime.Callers(minimumCallerDepth, pcs)
+        frames := runtime.CallersFrames(pcs[:depth])
+
+        for f, again := frames.Next(); again; f, again = frames.Next() {
+                pkg := getPackageName(f.Function)
+
+                // If the caller isn't part of this package, we're done
+                if pkg != logrusPackage {
+                        return &f //nolint:scopelint
+                }
+        }
+
+        // if we got here, we failed to find the caller's context
+        return nil
+}
+
+func (entry Entry) HasCaller() (has bool) {
+        return entry.Logger != nil &&
+                entry.Logger.ReportCaller &&
+                entry.Caller != nil
+}
+
+func (entry *Entry) log(level Level, msg string) {
+        var buffer *bytes.Buffer
+
+        newEntry := entry.Dup()
+
+        if newEntry.Time.IsZero() {
+                newEntry.Time = time.Now()
+        }
+
+        newEntry.Level = level
+        newEntry.Message = msg
+
+        newEntry.Logger.mu.Lock()
+        reportCaller := newEntry.Logger.ReportCaller
+        bufPool := newEntry.getBufferPool()
+        newEntry.Logger.mu.Unlock()
+
+        if reportCaller {
+                newEntry.Caller = getCaller()
+        }
+
+        newEntry.fireHooks()
+        buffer = bufPool.Get()
+        defer func() {
+                newEntry.Buffer = nil
+                buffer.Reset()
+                bufPool.Put(buffer)
+        }()
+        buffer.Reset()
+        newEntry.Buffer = buffer
+
+        newEntry.write()
+
+        newEntry.Buffer = nil
+
+        // 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(newEntry)
+        }
+}
+
+func (entry *Entry) getBufferPool() (pool BufferPool) {
+        if entry.Logger.BufferPool != nil {
+                return entry.Logger.BufferPool
+        }
+        return bufferPool
+}
+
+func (entry *Entry) fireHooks() {
+        var tmpHooks LevelHooks
+        entry.Logger.mu.Lock()
+        tmpHooks = make(LevelHooks, len(entry.Logger.Hooks))
+        for k, v := range entry.Logger.Hooks {
+                tmpHooks[k] = v
+        }
+        entry.Logger.mu.Unlock()
+
+        err := tmpHooks.Fire(entry.Level, entry)
+        if err != nil {
+                fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
+        }
+}
+
+func (entry *Entry) write() {
+        entry.Logger.mu.Lock()
+        defer entry.Logger.mu.Unlock()
+        serialized, err := entry.Logger.Formatter.Format(entry)
+        if err != nil {
+                fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
+                return
+        }
+        if _, err := entry.Logger.Out.Write(serialized); err != nil {
+                fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
+        }
+}
+
+// Log will log a message at the level given as parameter.
+// Warning: using Log at Panic or Fatal level will not respectively Panic nor Exit.
+// For this behaviour Entry.Panic or Entry.Fatal should be used instead.
+func (entry *Entry) Log(level Level, args ...interface{}) {
+        if entry.Logger.IsLevelEnabled(level) {
+                entry.log(level, fmt.Sprint(args...))
+        }
+}
+
+func (entry *Entry) Trace(args ...interface{}) {
+        entry.Log(TraceLevel, args...)
+}
+
+func (entry *Entry) Debug(args ...interface{}) {
+        entry.Log(DebugLevel, args...)
+}
+
+func (entry *Entry) Print(args ...interface{}) {
+        entry.Info(args...)
+}
+
+func (entry *Entry) Info(args ...interface{}) {
+        entry.Log(InfoLevel, args...)
+}
+
+func (entry *Entry) Warn(args ...interface{}) {
+        entry.Log(WarnLevel, args...)
+}
+
+func (entry *Entry) Warning(args ...interface{}) {
+        entry.Warn(args...)
+}
+
+func (entry *Entry) Error(args ...interface{}) {
+        entry.Log(ErrorLevel, args...)
+}
+
+func (entry *Entry) Fatal(args ...interface{}) {
+        entry.Log(FatalLevel, args...)
+        entry.Logger.Exit(1)
+}
+
+func (entry *Entry) Panic(args ...interface{}) {
+        entry.Log(PanicLevel, args...)
+}
+
+// Entry Printf family functions
+
+func (entry *Entry) Logf(level Level, format string, args ...interface{}) {
+        if entry.Logger.IsLevelEnabled(level) {
+                entry.Log(level, fmt.Sprintf(format, args...))
+        }
+}
+
+func (entry *Entry) Tracef(format string, args ...interface{}) {
+        entry.Logf(TraceLevel, format, args...)
+}
+
+func (entry *Entry) Debugf(format string, args ...interface{}) {
+        entry.Logf(DebugLevel, format, args...)
+}
+
+func (entry *Entry) Infof(format string, args ...interface{}) {
+        entry.Logf(InfoLevel, format, args...)
+}
+
+func (entry *Entry) Printf(format string, args ...interface{}) {
+        entry.Infof(format, args...)
+}
+
+func (entry *Entry) Warnf(format string, args ...interface{}) {
+        entry.Logf(WarnLevel, format, args...)
+}
+
+func (entry *Entry) Warningf(format string, args ...interface{}) {
+        entry.Warnf(format, args...)
+}
+
+func (entry *Entry) Errorf(format string, args ...interface{}) {
+        entry.Logf(ErrorLevel, format, args...)
+}
+
+func (entry *Entry) Fatalf(format string, args ...interface{}) {
+        entry.Logf(FatalLevel, format, args...)
+        entry.Logger.Exit(1)
+}
+
+func (entry *Entry) Panicf(format string, args ...interface{}) {
+        entry.Logf(PanicLevel, format, args...)
+}
+
+// Entry Println family functions
+
+func (entry *Entry) Logln(level Level, args ...interface{}) {
+        if entry.Logger.IsLevelEnabled(level) {
+                entry.Log(level, entry.sprintlnn(args...))
+        }
+}
+
+func (entry *Entry) Traceln(args ...interface{}) {
+        entry.Logln(TraceLevel, args...)
+}
+
+func (entry *Entry) Debugln(args ...interface{}) {
+        entry.Logln(DebugLevel, args...)
+}
+
+func (entry *Entry) Infoln(args ...interface{}) {
+        entry.Logln(InfoLevel, args...)
+}
+
+func (entry *Entry) Println(args ...interface{}) {
+        entry.Infoln(args...)
+}
+
+func (entry *Entry) Warnln(args ...interface{}) {
+        entry.Logln(WarnLevel, args...)
+}
+
+func (entry *Entry) Warningln(args ...interface{}) {
+        entry.Warnln(args...)
+}
+
+func (entry *Entry) Errorln(args ...interface{}) {
+        entry.Logln(ErrorLevel, args...)
+}
+
+func (entry *Entry) Fatalln(args ...interface{}) {
+        entry.Logln(FatalLevel, args...)
+        entry.Logger.Exit(1)
+}
+
+func (entry *Entry) Panicln(args ...interface{}) {
+        entry.Logln(PanicLevel, args...)
+}
+
+// Sprintlnn => Sprint no newline. This is to get the behavior of how
+// fmt.Sprintln where spaces are always added between operands, regardless of
+// their type. Instead of vendoring the Sprintln implementation to spare a
+// string allocation, we do the simplest thing.
+func (entry *Entry) sprintlnn(args ...interface{}) string {
+        msg := fmt.Sprintln(args...)
+        return msg[:len(msg)-1]
+}