adding in logging

vendor/go.uber.org/zap/benchmarks/apex_test.go

@@ -0,0 +1,58 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"io/ioutil"
+	"time"
+
+	"github.com/apex/log"
+	"github.com/apex/log/handlers/json"
+)
+
+func newDisabledApexLog() *log.Logger {
+	return &log.Logger{
+		Handler: json.New(ioutil.Discard),
+		Level:   log.ErrorLevel,
+	}
+}
+
+func newApexLog() *log.Logger {
+	return &log.Logger{
+		Handler: json.New(ioutil.Discard),
+		Level:   log.DebugLevel,
+	}
+}
+
+func fakeApexFields() log.Fields {
+	return log.Fields{
+		"int":               1,
+		"int64":             int64(1),
+		"float":             3.0,
+		"string":            "four!",
+		"bool":              true,
+		"time":              time.Unix(0, 0),
+		"error":             errExample.Error(),
+		"duration":          time.Second,
+		"user-defined type": _jane,
+		"another string":    "done!",
+	}
+}

vendor/go.uber.org/zap/benchmarks/doc.go

@@ -0,0 +1,23 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+// Package benchmarks contains only benchmarks comparing zap to other
+// structured logging libraries.
+package benchmarks

vendor/go.uber.org/zap/benchmarks/kit_test.go

@@ -0,0 +1,31 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"io/ioutil"
+
+	"github.com/go-kit/kit/log"
+)
+
+func newKitLog(fields ...interface{}) log.Logger {
+	return log.With(log.NewJSONLogger(ioutil.Discard), fields...)
+}

vendor/go.uber.org/zap/benchmarks/lion_test.go

@@ -0,0 +1,31 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"io/ioutil"
+
+	"go.pedge.io/lion"
+)
+
+func newLion() lion.Logger {
+	return lion.NewLogger(lion.NewJSONWritePusher(ioutil.Discard))
+}

vendor/go.uber.org/zap/benchmarks/log15_test.go

@@ -0,0 +1,33 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"io/ioutil"
+
+	"gopkg.in/inconshreveable/log15.v2"
+)
+
+func newLog15() log15.Logger {
+	logger := log15.New()
+	logger.SetHandler(log15.StreamHandler(ioutil.Discard, log15.JsonFormat()))
+	return logger
+}

vendor/go.uber.org/zap/benchmarks/logrus_test.go

@@ -0,0 +1,58 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"io/ioutil"
+	"time"
+
+	"github.com/sirupsen/logrus"
+)
+
+func newDisabledLogrus() *logrus.Logger {
+	logger := newLogrus()
+	logger.Level = logrus.ErrorLevel
+	return logger
+}
+
+func newLogrus() *logrus.Logger {
+	return &logrus.Logger{
+		Out:       ioutil.Discard,
+		Formatter: new(logrus.JSONFormatter),
+		Hooks:     make(logrus.LevelHooks),
+		Level:     logrus.DebugLevel,
+	}
+}
+
+func fakeLogrusFields() logrus.Fields {
+	return logrus.Fields{
+		"int":               1,
+		"int64":             int64(1),
+		"float":             3.0,
+		"string":            "four!",
+		"bool":              true,
+		"time":              time.Unix(0, 0),
+		"error":             errExample.Error(),
+		"duration":          time.Second,
+		"user-defined type": _jane,
+		"another string":    "done!",
+	}
+}

vendor/go.uber.org/zap/benchmarks/scenario_bench_test.go

@@ -0,0 +1,565 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"io/ioutil"
+	"log"
+	"testing"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+func BenchmarkDisabledWithoutFields(b *testing.B) {
+	b.Logf("Logging at a disabled level without any structured context.")
+	b.Run("Zap", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.Check", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				if m := logger.Check(zap.InfoLevel, getMessage(0)); m != nil {
+					m.Write()
+				}
+			}
+		})
+	})
+	b.Run("Zap.Sugar", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.SugarFormatting", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infof("%v %v %v %s %v %v %v %v %v %s\n",
+					1,
+					int64(1),
+					3.0,
+					"four!",
+					true,
+					time.Unix(0, 0),
+					errExample,
+					time.Second,
+					_jane,
+					"done!",
+				)
+			}
+		})
+	})
+	b.Run("apex/log", func(b *testing.B) {
+		logger := newDisabledApexLog()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("sirupsen/logrus", func(b *testing.B) {
+		logger := newDisabledLogrus()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+}
+
+func BenchmarkDisabledAccumulatedContext(b *testing.B) {
+	b.Logf("Logging at a disabled level with some accumulated context.")
+	b.Run("Zap", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).With(fakeFields()...)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.Check", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).With(fakeFields()...)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				if m := logger.Check(zap.InfoLevel, getMessage(0)); m != nil {
+					m.Write()
+				}
+			}
+		})
+	})
+	b.Run("Zap.Sugar", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).With(fakeFields()...).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.SugarFormatting", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).With(fakeFields()...).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infof("%v %v %v %s %v %v %v %v %v %s\n",
+					1,
+					int64(1),
+					3.0,
+					"four!",
+					true,
+					time.Unix(0, 0),
+					errExample,
+					time.Second,
+					_jane,
+					"done!",
+				)
+			}
+		})
+	})
+	b.Run("apex/log", func(b *testing.B) {
+		logger := newDisabledApexLog().WithFields(fakeApexFields())
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("sirupsen/logrus", func(b *testing.B) {
+		logger := newDisabledLogrus().WithFields(fakeLogrusFields())
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+}
+
+func BenchmarkDisabledAddingFields(b *testing.B) {
+	b.Logf("Logging at a disabled level, adding context at each log site.")
+	b.Run("Zap", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0), fakeFields()...)
+			}
+		})
+	})
+	b.Run("Zap.Check", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				if m := logger.Check(zap.InfoLevel, getMessage(0)); m != nil {
+					m.Write(fakeFields()...)
+				}
+			}
+		})
+	})
+	b.Run("Zap.Sugar", func(b *testing.B) {
+		logger := newZapLogger(zap.ErrorLevel).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infow(getMessage(0), fakeSugarFields()...)
+			}
+		})
+	})
+	b.Run("apex/log", func(b *testing.B) {
+		logger := newDisabledApexLog()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.WithFields(fakeApexFields()).Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("sirupsen/logrus", func(b *testing.B) {
+		logger := newDisabledLogrus()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.WithFields(fakeLogrusFields()).Info(getMessage(0))
+			}
+		})
+	})
+}
+
+func BenchmarkWithoutFields(b *testing.B) {
+	b.Logf("Logging without any structured context.")
+	b.Run("Zap", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.Check", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				if ce := logger.Check(zap.InfoLevel, getMessage(0)); ce != nil {
+					ce.Write()
+				}
+			}
+		})
+	})
+	b.Run("Zap.CheckSampled", func(b *testing.B) {
+		logger := newSampledLogger(zap.DebugLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			i := 0
+			for pb.Next() {
+				i++
+				if ce := logger.Check(zap.InfoLevel, getMessage(i)); ce != nil {
+					ce.Write()
+				}
+			}
+		})
+	})
+	b.Run("Zap.Sugar", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.SugarFormatting", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infof("%v %v %v %s %v %v %v %v %v %s\n",
+					1,
+					int64(1),
+					3.0,
+					"four!",
+					true,
+					time.Unix(0, 0),
+					errExample,
+					time.Second,
+					_jane,
+					"done!",
+				)
+			}
+		})
+	})
+	b.Run("apex/log", func(b *testing.B) {
+		logger := newApexLog()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("go-kit/kit/log", func(b *testing.B) {
+		logger := newKitLog()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Log(getMessage(0), getMessage(1))
+			}
+		})
+	})
+	b.Run("inconshreveable/log15", func(b *testing.B) {
+		logger := newLog15()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("sirupsen/logrus", func(b *testing.B) {
+		logger := newLogrus()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("go.pedge.io/lion", func(b *testing.B) {
+		logger := newLion()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Printf(getMessage(0))
+			}
+		})
+	})
+	b.Run("stdlib.Println", func(b *testing.B) {
+		logger := log.New(ioutil.Discard, "", log.LstdFlags)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Println(getMessage(0))
+			}
+		})
+	})
+	b.Run("stdlib.Printf", func(b *testing.B) {
+		logger := log.New(ioutil.Discard, "", log.LstdFlags)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Printf("%v %v %v %s %v %v %v %v %v %s\n",
+					1,
+					int64(1),
+					3.0,
+					"four!",
+					true,
+					time.Unix(0, 0),
+					errExample,
+					time.Second,
+					_jane,
+					"done!",
+				)
+			}
+		})
+	})
+}
+
+func BenchmarkAccumulatedContext(b *testing.B) {
+	b.Logf("Logging with some accumulated context.")
+	b.Run("Zap", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).With(fakeFields()...)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.Check", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).With(fakeFields()...)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				if ce := logger.Check(zap.InfoLevel, getMessage(0)); ce != nil {
+					ce.Write()
+				}
+			}
+		})
+	})
+	b.Run("Zap.CheckSampled", func(b *testing.B) {
+		logger := newSampledLogger(zap.DebugLevel).With(fakeFields()...)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			i := 0
+			for pb.Next() {
+				i++
+				if ce := logger.Check(zap.InfoLevel, getMessage(i)); ce != nil {
+					ce.Write()
+				}
+			}
+		})
+	})
+	b.Run("Zap.Sugar", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).With(fakeFields()...).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("Zap.SugarFormatting", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).With(fakeFields()...).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infof("%v %v %v %s %v %v %v %v %v %s\n",
+					1,
+					int64(1),
+					3.0,
+					"four!",
+					true,
+					time.Unix(0, 0),
+					errExample,
+					time.Second,
+					_jane,
+					"done!",
+				)
+			}
+		})
+	})
+	b.Run("apex/log", func(b *testing.B) {
+		logger := newApexLog().WithFields(fakeApexFields())
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("go-kit/kit/log", func(b *testing.B) {
+		logger := newKitLog(fakeSugarFields()...)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Log(getMessage(0), getMessage(1))
+			}
+		})
+	})
+	b.Run("inconshreveable/log15", func(b *testing.B) {
+		logger := newLog15().New(fakeSugarFields())
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("sirupsen/logrus", func(b *testing.B) {
+		logger := newLogrus().WithFields(fakeLogrusFields())
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("go.pedge.io/lion", func(b *testing.B) {
+		logger := newLion().WithFields(fakeLogrusFields())
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infof(getMessage(0))
+			}
+		})
+	})
+}
+
+func BenchmarkAddingFields(b *testing.B) {
+	b.Logf("Logging with additional context at each log site.")
+	b.Run("Zap", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0), fakeFields()...)
+			}
+		})
+	})
+	b.Run("Zap.Check", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				if ce := logger.Check(zap.InfoLevel, getMessage(0)); ce != nil {
+					ce.Write(fakeFields()...)
+				}
+			}
+		})
+	})
+	b.Run("Zap.CheckSampled", func(b *testing.B) {
+		logger := newSampledLogger(zap.DebugLevel)
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			i := 0
+			for pb.Next() {
+				i++
+				if ce := logger.Check(zap.InfoLevel, getMessage(i)); ce != nil {
+					ce.Write(fakeFields()...)
+				}
+			}
+		})
+	})
+	b.Run("Zap.Sugar", func(b *testing.B) {
+		logger := newZapLogger(zap.DebugLevel).Sugar()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Infow(getMessage(0), fakeSugarFields()...)
+			}
+		})
+	})
+	b.Run("apex/log", func(b *testing.B) {
+		logger := newApexLog()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.WithFields(fakeApexFields()).Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("go-kit/kit/log", func(b *testing.B) {
+		logger := newKitLog()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Log(fakeSugarFields()...)
+			}
+		})
+	})
+	b.Run("inconshreveable/log15", func(b *testing.B) {
+		logger := newLog15()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.Info(getMessage(0), fakeSugarFields()...)
+			}
+		})
+	})
+	b.Run("sirupsen/logrus", func(b *testing.B) {
+		logger := newLogrus()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.WithFields(fakeLogrusFields()).Info(getMessage(0))
+			}
+		})
+	})
+	b.Run("go.pedge.io/lion", func(b *testing.B) {
+		logger := newLion()
+		b.ResetTimer()
+		b.RunParallel(func(pb *testing.PB) {
+			for pb.Next() {
+				logger.WithFields(fakeLogrusFields()).Infof(getMessage(0))
+			}
+		})
+	})
+}

vendor/go.uber.org/zap/benchmarks/zap_test.go

@@ -0,0 +1,117 @@
+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// 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.
+
+package benchmarks
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"go.uber.org/zap/zaptest"
+)
+
+var (
+	errExample = errors.New("fail")
+
+	_messages = fakeMessages(1000)
+)
+
+func fakeMessages(n int) []string {
+	messages := make([]string, n)
+	for i := range messages {
+		messages[i] = fmt.Sprintf("Test logging, but use a somewhat realistic message length. (#%v)", i)
+	}
+	return messages
+}
+
+func getMessage(iter int) string {
+	return _messages[iter%1000]
+}
+
+type user struct {
+	Name      string    `json:"name"`
+	Email     string    `json:"email"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+func (u user) MarshalLogObject(enc zapcore.ObjectEncoder) error {
+	enc.AddString("name", u.Name)
+	enc.AddString("email", u.Email)
+	enc.AddInt64("created_at", u.CreatedAt.UnixNano())
+	return nil
+}
+
+var _jane = user{
+	Name:      "Jane Doe",
+	Email:     "jane@test.com",
+	CreatedAt: time.Date(1980, 1, 1, 12, 0, 0, 0, time.UTC),
+}
+
+func newZapLogger(lvl zapcore.Level) *zap.Logger {
+	// use the canned production encoder configuration
+	enc := zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig())
+	return zap.New(zapcore.NewCore(
+		enc,
+		&zaptest.Discarder{},
+		lvl,
+	))
+}
+
+func newSampledLogger(lvl zapcore.Level) *zap.Logger {
+	return zap.New(zapcore.NewSampler(
+		newZapLogger(zap.DebugLevel).Core(),
+		100*time.Millisecond,
+		10, // first
+		10, // thereafter
+	))
+}
+
+func fakeFields() []zapcore.Field {
+	return []zapcore.Field{
+		zap.Int("int", 1),
+		zap.Int64("int64", 2),
+		zap.Float64("float", 3.0),
+		zap.String("string", "four!"),
+		zap.Bool("bool", true),
+		zap.Time("time", time.Unix(0, 0)),
+		zap.Error(errExample),
+		zap.Duration("duration", time.Second),
+		zap.Object("user-defined type", _jane),
+		zap.String("another string", "done!"),
+	}
+}
+
+func fakeSugarFields() []interface{} {
+	return []interface{}{
+		"int", 1,
+		"int64", 2,
+		"float", 3.0,
+		"string", "four!",
+		"bool", true,
+		"time", time.Unix(0, 0),
+		"error", errExample,
+		"duration", time.Second,
+		"user-defined type", _jane,
+		"another string", "done!",
+	}
+}