vendor

vendor/github.com/cloudflare/cfssl/log/log.go

@@ -0,0 +1,162 @@
+// Package log implements a wrapper around the Go standard library's
+// logging package. Clients should set the current log level; only
+// messages below that level will actually be logged. For example, if
+// Level is set to LevelWarning, only log messages at the Warning,
+// Error, and Critical levels will be logged.
+package log
+
+import (
+	"fmt"
+	"log"
+	"os"
+)
+
+// The following constants represent logging levels in increasing levels of seriousness.
+const (
+	// LevelDebug is the log level for Debug statements.
+	LevelDebug = iota
+	// LevelInfo is the log level for Info statements.
+	LevelInfo
+	// LevelWarning is the log level for Warning statements.
+	LevelWarning
+	// LevelError is the log level for Error statements.
+	LevelError
+	// LevelCritical is the log level for Critical statements.
+	LevelCritical
+	// LevelFatal is the log level for Fatal statements.
+	LevelFatal
+)
+
+var levelPrefix = [...]string{
+	LevelDebug:    "DEBUG",
+	LevelInfo:     "INFO",
+	LevelWarning:  "WARNING",
+	LevelError:    "ERROR",
+	LevelCritical: "CRITICAL",
+	LevelFatal:    "FATAL",
+}
+
+// Level stores the current logging level.
+var Level = LevelInfo
+
+// SyslogWriter specifies the necessary methods for an alternate output
+// destination passed in via SetLogger.
+//
+// SyslogWriter is satisfied by *syslog.Writer.
+type SyslogWriter interface {
+	Debug(string)
+	Info(string)
+	Warning(string)
+	Err(string)
+	Crit(string)
+	Emerg(string)
+}
+
+// syslogWriter stores the SetLogger() parameter.
+var syslogWriter SyslogWriter
+
+// SetLogger sets the output used for output by this package.
+// A *syslog.Writer is a good choice for the logger parameter.
+// Call with a nil parameter to revert to default behavior.
+func SetLogger(logger SyslogWriter) {
+	syslogWriter = logger
+}
+
+func print(l int, msg string) {
+	if l >= Level {
+		if syslogWriter != nil {
+			switch l {
+			case LevelDebug:
+				syslogWriter.Debug(msg)
+			case LevelInfo:
+				syslogWriter.Info(msg)
+			case LevelWarning:
+				syslogWriter.Warning(msg)
+			case LevelError:
+				syslogWriter.Err(msg)
+			case LevelCritical:
+				syslogWriter.Crit(msg)
+			case LevelFatal:
+				syslogWriter.Emerg(msg)
+			}
+		} else {
+			log.Printf("[%s] %s", levelPrefix[l], msg)
+		}
+	}
+}
+
+func outputf(l int, format string, v []interface{}) {
+	print(l, fmt.Sprintf(format, v...))
+}
+
+func output(l int, v []interface{}) {
+	print(l, fmt.Sprint(v...))
+}
+
+// Fatalf logs a formatted message at the "fatal" level and then exits. The
+// arguments are handled in the same manner as fmt.Printf.
+func Fatalf(format string, v ...interface{}) {
+	outputf(LevelFatal, format, v)
+	os.Exit(1)
+}
+
+// Fatal logs its arguments at the "fatal" level and then exits.
+func Fatal(v ...interface{}) {
+	output(LevelFatal, v)
+	os.Exit(1)
+}
+
+// Criticalf logs a formatted message at the "critical" level. The
+// arguments are handled in the same manner as fmt.Printf.
+func Criticalf(format string, v ...interface{}) {
+	outputf(LevelCritical, format, v)
+}
+
+// Critical logs its arguments at the "critical" level.
+func Critical(v ...interface{}) {
+	output(LevelCritical, v)
+}
+
+// Errorf logs a formatted message at the "error" level. The arguments
+// are handled in the same manner as fmt.Printf.
+func Errorf(format string, v ...interface{}) {
+	outputf(LevelError, format, v)
+}
+
+// Error logs its arguments at the "error" level.
+func Error(v ...interface{}) {
+	output(LevelError, v)
+}
+
+// Warningf logs a formatted message at the "warning" level. The
+// arguments are handled in the same manner as fmt.Printf.
+func Warningf(format string, v ...interface{}) {
+	outputf(LevelWarning, format, v)
+}
+
+// Warning logs its arguments at the "warning" level.
+func Warning(v ...interface{}) {
+	output(LevelWarning, v)
+}
+
+// Infof logs a formatted message at the "info" level. The arguments
+// are handled in the same manner as fmt.Printf.
+func Infof(format string, v ...interface{}) {
+	outputf(LevelInfo, format, v)
+}
+
+// Info logs its arguments at the "info" level.
+func Info(v ...interface{}) {
+	output(LevelInfo, v)
+}
+
+// Debugf logs a formatted message at the "debug" level. The arguments
+// are handled in the same manner as fmt.Printf.
+func Debugf(format string, v ...interface{}) {
+	outputf(LevelDebug, format, v)
+}
+
+// Debug logs its arguments at the "debug" level.
+func Debug(v ...interface{}) {
+	output(LevelDebug, v)
+}