open-consul/logging/grpc.go

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Go
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package logging
import (
"fmt"
"github.com/hashicorp/go-hclog"
)
// GRPCLogger wrapps a hclog.Logger and implements the grpclog.LoggerV2 interface
// allowing gRPC servers to log to the standard Consul logger.
type GRPCLogger struct {
level string
logger hclog.Logger
}
// NewGRPCLogger creates a grpclog.LoggerV2 that will output to the supplied
// logger with Severity/Verbosity level appropriate for the given config.
//
// Note that grpclog has Info, Warning, Error, Fatal severity levels AND integer
// verbosity levels for additional info. Verbose logs in glog are always INFO
// severity so we map Info,V0 to INFO, Info,V1 to DEBUG, and Info,V>1 to TRACE.
func NewGRPCLogger(config *Config, logger hclog.Logger) *GRPCLogger {
return &GRPCLogger{
level: config.LogLevel,
logger: logger,
}
}
// Info implements grpclog.LoggerV2
func (g *GRPCLogger) Info(args ...interface{}) {
g.logger.Info(fmt.Sprint(args...))
}
// Infoln implements grpclog.LoggerV2
func (g *GRPCLogger) Infoln(args ...interface{}) {
g.Info(fmt.Sprint(args...))
}
// Infof implements grpclog.LoggerV2
func (g *GRPCLogger) Infof(format string, args ...interface{}) {
g.Info(fmt.Sprintf(format, args...))
}
// Warning implements grpclog.LoggerV2
func (g *GRPCLogger) Warning(args ...interface{}) {
g.logger.Warn(fmt.Sprint(args...))
}
// Warningln implements grpclog.LoggerV2
func (g *GRPCLogger) Warningln(args ...interface{}) {
g.Warning(fmt.Sprint(args...))
}
// Warningf implements grpclog.LoggerV2
func (g *GRPCLogger) Warningf(format string, args ...interface{}) {
g.Warning(fmt.Sprintf(format, args...))
}
// Error implements grpclog.LoggerV2
func (g *GRPCLogger) Error(args ...interface{}) {
g.logger.Error(fmt.Sprint(args...))
}
// Errorln implements grpclog.LoggerV2
func (g *GRPCLogger) Errorln(args ...interface{}) {
g.Error(fmt.Sprint(args...))
}
// Errorf implements grpclog.LoggerV2
func (g *GRPCLogger) Errorf(format string, args ...interface{}) {
g.Error(fmt.Sprintf(format, args...))
}
// Fatal implements grpclog.LoggerV2
func (g *GRPCLogger) Fatal(args ...interface{}) {
g.logger.Error(fmt.Sprint(args...))
}
// Fatalln implements grpclog.LoggerV2
func (g *GRPCLogger) Fatalln(args ...interface{}) {
g.Fatal(fmt.Sprint(args...))
}
// Fatalf implements grpclog.LoggerV2
func (g *GRPCLogger) Fatalf(format string, args ...interface{}) {
g.Fatal(fmt.Sprintf(format, args...))
}
// V implements grpclog.LoggerV2
func (g *GRPCLogger) V(l int) bool {
switch g.level {
case "TRACE":
// Enable ALL the verbosity!
return true
case "DEBUG":
return l < 2
case "INFO":
return l < 1
default:
return false
}
}