VOL-2408 - Refactor / Use voltha-lib-go Logging
Change-Id: I6e7d9eaba49c104cd50bb5692a2ff9733014fac4
diff --git a/vendor/go.uber.org/zap/zapcore/console_encoder.go b/vendor/go.uber.org/zap/zapcore/console_encoder.go
new file mode 100644
index 0000000..b787596
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/console_encoder.go
@@ -0,0 +1,147 @@
+// 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 zapcore
+
+import (
+ "fmt"
+ "sync"
+
+ "go.uber.org/zap/buffer"
+ "go.uber.org/zap/internal/bufferpool"
+)
+
+var _sliceEncoderPool = sync.Pool{
+ New: func() interface{} {
+ return &sliceArrayEncoder{elems: make([]interface{}, 0, 2)}
+ },
+}
+
+func getSliceEncoder() *sliceArrayEncoder {
+ return _sliceEncoderPool.Get().(*sliceArrayEncoder)
+}
+
+func putSliceEncoder(e *sliceArrayEncoder) {
+ e.elems = e.elems[:0]
+ _sliceEncoderPool.Put(e)
+}
+
+type consoleEncoder struct {
+ *jsonEncoder
+}
+
+// NewConsoleEncoder creates an encoder whose output is designed for human -
+// rather than machine - consumption. It serializes the core log entry data
+// (message, level, timestamp, etc.) in a plain-text format and leaves the
+// structured context as JSON.
+//
+// Note that although the console encoder doesn't use the keys specified in the
+// encoder configuration, it will omit any element whose key is set to the empty
+// string.
+func NewConsoleEncoder(cfg EncoderConfig) Encoder {
+ return consoleEncoder{newJSONEncoder(cfg, true)}
+}
+
+func (c consoleEncoder) Clone() Encoder {
+ return consoleEncoder{c.jsonEncoder.Clone().(*jsonEncoder)}
+}
+
+func (c consoleEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer, error) {
+ line := bufferpool.Get()
+
+ // We don't want the entry's metadata to be quoted and escaped (if it's
+ // encoded as strings), which means that we can't use the JSON encoder. The
+ // simplest option is to use the memory encoder and fmt.Fprint.
+ //
+ // If this ever becomes a performance bottleneck, we can implement
+ // ArrayEncoder for our plain-text format.
+ arr := getSliceEncoder()
+ if c.TimeKey != "" && c.EncodeTime != nil {
+ c.EncodeTime(ent.Time, arr)
+ }
+ if c.LevelKey != "" && c.EncodeLevel != nil {
+ c.EncodeLevel(ent.Level, arr)
+ }
+ if ent.LoggerName != "" && c.NameKey != "" {
+ nameEncoder := c.EncodeName
+
+ if nameEncoder == nil {
+ // Fall back to FullNameEncoder for backward compatibility.
+ nameEncoder = FullNameEncoder
+ }
+
+ nameEncoder(ent.LoggerName, arr)
+ }
+ if ent.Caller.Defined && c.CallerKey != "" && c.EncodeCaller != nil {
+ c.EncodeCaller(ent.Caller, arr)
+ }
+ for i := range arr.elems {
+ if i > 0 {
+ line.AppendByte('\t')
+ }
+ fmt.Fprint(line, arr.elems[i])
+ }
+ putSliceEncoder(arr)
+
+ // Add the message itself.
+ if c.MessageKey != "" {
+ c.addTabIfNecessary(line)
+ line.AppendString(ent.Message)
+ }
+
+ // Add any structured context.
+ c.writeContext(line, fields)
+
+ // If there's no stacktrace key, honor that; this allows users to force
+ // single-line output.
+ if ent.Stack != "" && c.StacktraceKey != "" {
+ line.AppendByte('\n')
+ line.AppendString(ent.Stack)
+ }
+
+ if c.LineEnding != "" {
+ line.AppendString(c.LineEnding)
+ } else {
+ line.AppendString(DefaultLineEnding)
+ }
+ return line, nil
+}
+
+func (c consoleEncoder) writeContext(line *buffer.Buffer, extra []Field) {
+ context := c.jsonEncoder.Clone().(*jsonEncoder)
+ defer context.buf.Free()
+
+ addFields(context, extra)
+ context.closeOpenNamespaces()
+ if context.buf.Len() == 0 {
+ return
+ }
+
+ c.addTabIfNecessary(line)
+ line.AppendByte('{')
+ line.Write(context.buf.Bytes())
+ line.AppendByte('}')
+}
+
+func (c consoleEncoder) addTabIfNecessary(line *buffer.Buffer) {
+ if line.Len() > 0 {
+ line.AppendByte('\t')
+ }
+}
diff --git a/vendor/go.uber.org/zap/zapcore/core.go b/vendor/go.uber.org/zap/zapcore/core.go
new file mode 100644
index 0000000..a1ef8b0
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/core.go
@@ -0,0 +1,113 @@
+// 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 zapcore
+
+// Core is a minimal, fast logger interface. It's designed for library authors
+// to wrap in a more user-friendly API.
+type Core interface {
+ LevelEnabler
+
+ // With adds structured context to the Core.
+ With([]Field) Core
+ // Check determines whether the supplied Entry should be logged (using the
+ // embedded LevelEnabler and possibly some extra logic). If the entry
+ // should be logged, the Core adds itself to the CheckedEntry and returns
+ // the result.
+ //
+ // Callers must use Check before calling Write.
+ Check(Entry, *CheckedEntry) *CheckedEntry
+ // Write serializes the Entry and any Fields supplied at the log site and
+ // writes them to their destination.
+ //
+ // If called, Write should always log the Entry and Fields; it should not
+ // replicate the logic of Check.
+ Write(Entry, []Field) error
+ // Sync flushes buffered logs (if any).
+ Sync() error
+}
+
+type nopCore struct{}
+
+// NewNopCore returns a no-op Core.
+func NewNopCore() Core { return nopCore{} }
+func (nopCore) Enabled(Level) bool { return false }
+func (n nopCore) With([]Field) Core { return n }
+func (nopCore) Check(_ Entry, ce *CheckedEntry) *CheckedEntry { return ce }
+func (nopCore) Write(Entry, []Field) error { return nil }
+func (nopCore) Sync() error { return nil }
+
+// NewCore creates a Core that writes logs to a WriteSyncer.
+func NewCore(enc Encoder, ws WriteSyncer, enab LevelEnabler) Core {
+ return &ioCore{
+ LevelEnabler: enab,
+ enc: enc,
+ out: ws,
+ }
+}
+
+type ioCore struct {
+ LevelEnabler
+ enc Encoder
+ out WriteSyncer
+}
+
+func (c *ioCore) With(fields []Field) Core {
+ clone := c.clone()
+ addFields(clone.enc, fields)
+ return clone
+}
+
+func (c *ioCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
+ if c.Enabled(ent.Level) {
+ return ce.AddCore(ent, c)
+ }
+ return ce
+}
+
+func (c *ioCore) Write(ent Entry, fields []Field) error {
+ buf, err := c.enc.EncodeEntry(ent, fields)
+ if err != nil {
+ return err
+ }
+ _, err = c.out.Write(buf.Bytes())
+ buf.Free()
+ if err != nil {
+ return err
+ }
+ if ent.Level > ErrorLevel {
+ // Since we may be crashing the program, sync the output. Ignore Sync
+ // errors, pending a clean solution to issue #370.
+ c.Sync()
+ }
+ return nil
+}
+
+func (c *ioCore) Sync() error {
+ return c.out.Sync()
+}
+
+func (c *ioCore) clone() *ioCore {
+ return &ioCore{
+ LevelEnabler: c.LevelEnabler,
+ enc: c.enc.Clone(),
+ out: c.out,
+ }
+}
diff --git a/vendor/go.uber.org/zap/zapcore/doc.go b/vendor/go.uber.org/zap/zapcore/doc.go
new file mode 100644
index 0000000..31000e9
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/doc.go
@@ -0,0 +1,24 @@
+// 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 zapcore defines and implements the low-level interfaces upon which
+// zap is built. By providing alternate implementations of these interfaces,
+// external packages can extend zap's capabilities.
+package zapcore // import "go.uber.org/zap/zapcore"
diff --git a/vendor/go.uber.org/zap/zapcore/encoder.go b/vendor/go.uber.org/zap/zapcore/encoder.go
new file mode 100644
index 0000000..f050952
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/encoder.go
@@ -0,0 +1,348 @@
+// 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 zapcore
+
+import (
+ "time"
+
+ "go.uber.org/zap/buffer"
+)
+
+// DefaultLineEnding defines the default line ending when writing logs.
+// Alternate line endings specified in EncoderConfig can override this
+// behavior.
+const DefaultLineEnding = "\n"
+
+// A LevelEncoder serializes a Level to a primitive type.
+type LevelEncoder func(Level, PrimitiveArrayEncoder)
+
+// LowercaseLevelEncoder serializes a Level to a lowercase string. For example,
+// InfoLevel is serialized to "info".
+func LowercaseLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
+ enc.AppendString(l.String())
+}
+
+// LowercaseColorLevelEncoder serializes a Level to a lowercase string and adds coloring.
+// For example, InfoLevel is serialized to "info" and colored blue.
+func LowercaseColorLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
+ s, ok := _levelToLowercaseColorString[l]
+ if !ok {
+ s = _unknownLevelColor.Add(l.String())
+ }
+ enc.AppendString(s)
+}
+
+// CapitalLevelEncoder serializes a Level to an all-caps string. For example,
+// InfoLevel is serialized to "INFO".
+func CapitalLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
+ enc.AppendString(l.CapitalString())
+}
+
+// CapitalColorLevelEncoder serializes a Level to an all-caps string and adds color.
+// For example, InfoLevel is serialized to "INFO" and colored blue.
+func CapitalColorLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
+ s, ok := _levelToCapitalColorString[l]
+ if !ok {
+ s = _unknownLevelColor.Add(l.CapitalString())
+ }
+ enc.AppendString(s)
+}
+
+// UnmarshalText unmarshals text to a LevelEncoder. "capital" is unmarshaled to
+// CapitalLevelEncoder, "coloredCapital" is unmarshaled to CapitalColorLevelEncoder,
+// "colored" is unmarshaled to LowercaseColorLevelEncoder, and anything else
+// is unmarshaled to LowercaseLevelEncoder.
+func (e *LevelEncoder) UnmarshalText(text []byte) error {
+ switch string(text) {
+ case "capital":
+ *e = CapitalLevelEncoder
+ case "capitalColor":
+ *e = CapitalColorLevelEncoder
+ case "color":
+ *e = LowercaseColorLevelEncoder
+ default:
+ *e = LowercaseLevelEncoder
+ }
+ return nil
+}
+
+// A TimeEncoder serializes a time.Time to a primitive type.
+type TimeEncoder func(time.Time, PrimitiveArrayEncoder)
+
+// EpochTimeEncoder serializes a time.Time to a floating-point number of seconds
+// since the Unix epoch.
+func EpochTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
+ nanos := t.UnixNano()
+ sec := float64(nanos) / float64(time.Second)
+ enc.AppendFloat64(sec)
+}
+
+// EpochMillisTimeEncoder serializes a time.Time to a floating-point number of
+// milliseconds since the Unix epoch.
+func EpochMillisTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
+ nanos := t.UnixNano()
+ millis := float64(nanos) / float64(time.Millisecond)
+ enc.AppendFloat64(millis)
+}
+
+// EpochNanosTimeEncoder serializes a time.Time to an integer number of
+// nanoseconds since the Unix epoch.
+func EpochNanosTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
+ enc.AppendInt64(t.UnixNano())
+}
+
+// ISO8601TimeEncoder serializes a time.Time to an ISO8601-formatted string
+// with millisecond precision.
+func ISO8601TimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
+ enc.AppendString(t.Format("2006-01-02T15:04:05.000Z0700"))
+}
+
+// UnmarshalText unmarshals text to a TimeEncoder. "iso8601" and "ISO8601" are
+// unmarshaled to ISO8601TimeEncoder, "millis" is unmarshaled to
+// EpochMillisTimeEncoder, and anything else is unmarshaled to EpochTimeEncoder.
+func (e *TimeEncoder) UnmarshalText(text []byte) error {
+ switch string(text) {
+ case "iso8601", "ISO8601":
+ *e = ISO8601TimeEncoder
+ case "millis":
+ *e = EpochMillisTimeEncoder
+ case "nanos":
+ *e = EpochNanosTimeEncoder
+ default:
+ *e = EpochTimeEncoder
+ }
+ return nil
+}
+
+// A DurationEncoder serializes a time.Duration to a primitive type.
+type DurationEncoder func(time.Duration, PrimitiveArrayEncoder)
+
+// SecondsDurationEncoder serializes a time.Duration to a floating-point number of seconds elapsed.
+func SecondsDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
+ enc.AppendFloat64(float64(d) / float64(time.Second))
+}
+
+// NanosDurationEncoder serializes a time.Duration to an integer number of
+// nanoseconds elapsed.
+func NanosDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
+ enc.AppendInt64(int64(d))
+}
+
+// StringDurationEncoder serializes a time.Duration using its built-in String
+// method.
+func StringDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
+ enc.AppendString(d.String())
+}
+
+// UnmarshalText unmarshals text to a DurationEncoder. "string" is unmarshaled
+// to StringDurationEncoder, and anything else is unmarshaled to
+// NanosDurationEncoder.
+func (e *DurationEncoder) UnmarshalText(text []byte) error {
+ switch string(text) {
+ case "string":
+ *e = StringDurationEncoder
+ case "nanos":
+ *e = NanosDurationEncoder
+ default:
+ *e = SecondsDurationEncoder
+ }
+ return nil
+}
+
+// A CallerEncoder serializes an EntryCaller to a primitive type.
+type CallerEncoder func(EntryCaller, PrimitiveArrayEncoder)
+
+// FullCallerEncoder serializes a caller in /full/path/to/package/file:line
+// format.
+func FullCallerEncoder(caller EntryCaller, enc PrimitiveArrayEncoder) {
+ // TODO: consider using a byte-oriented API to save an allocation.
+ enc.AppendString(caller.String())
+}
+
+// ShortCallerEncoder serializes a caller in package/file:line format, trimming
+// all but the final directory from the full path.
+func ShortCallerEncoder(caller EntryCaller, enc PrimitiveArrayEncoder) {
+ // TODO: consider using a byte-oriented API to save an allocation.
+ enc.AppendString(caller.TrimmedPath())
+}
+
+// UnmarshalText unmarshals text to a CallerEncoder. "full" is unmarshaled to
+// FullCallerEncoder and anything else is unmarshaled to ShortCallerEncoder.
+func (e *CallerEncoder) UnmarshalText(text []byte) error {
+ switch string(text) {
+ case "full":
+ *e = FullCallerEncoder
+ default:
+ *e = ShortCallerEncoder
+ }
+ return nil
+}
+
+// A NameEncoder serializes a period-separated logger name to a primitive
+// type.
+type NameEncoder func(string, PrimitiveArrayEncoder)
+
+// FullNameEncoder serializes the logger name as-is.
+func FullNameEncoder(loggerName string, enc PrimitiveArrayEncoder) {
+ enc.AppendString(loggerName)
+}
+
+// UnmarshalText unmarshals text to a NameEncoder. Currently, everything is
+// unmarshaled to FullNameEncoder.
+func (e *NameEncoder) UnmarshalText(text []byte) error {
+ switch string(text) {
+ case "full":
+ *e = FullNameEncoder
+ default:
+ *e = FullNameEncoder
+ }
+ return nil
+}
+
+// An EncoderConfig allows users to configure the concrete encoders supplied by
+// zapcore.
+type EncoderConfig struct {
+ // Set the keys used for each log entry. If any key is empty, that portion
+ // of the entry is omitted.
+ MessageKey string `json:"messageKey" yaml:"messageKey"`
+ LevelKey string `json:"levelKey" yaml:"levelKey"`
+ TimeKey string `json:"timeKey" yaml:"timeKey"`
+ NameKey string `json:"nameKey" yaml:"nameKey"`
+ CallerKey string `json:"callerKey" yaml:"callerKey"`
+ StacktraceKey string `json:"stacktraceKey" yaml:"stacktraceKey"`
+ LineEnding string `json:"lineEnding" yaml:"lineEnding"`
+ // Configure the primitive representations of common complex types. For
+ // example, some users may want all time.Times serialized as floating-point
+ // seconds since epoch, while others may prefer ISO8601 strings.
+ EncodeLevel LevelEncoder `json:"levelEncoder" yaml:"levelEncoder"`
+ EncodeTime TimeEncoder `json:"timeEncoder" yaml:"timeEncoder"`
+ EncodeDuration DurationEncoder `json:"durationEncoder" yaml:"durationEncoder"`
+ EncodeCaller CallerEncoder `json:"callerEncoder" yaml:"callerEncoder"`
+ // Unlike the other primitive type encoders, EncodeName is optional. The
+ // zero value falls back to FullNameEncoder.
+ EncodeName NameEncoder `json:"nameEncoder" yaml:"nameEncoder"`
+}
+
+// ObjectEncoder is a strongly-typed, encoding-agnostic interface for adding a
+// map- or struct-like object to the logging context. Like maps, ObjectEncoders
+// aren't safe for concurrent use (though typical use shouldn't require locks).
+type ObjectEncoder interface {
+ // Logging-specific marshalers.
+ AddArray(key string, marshaler ArrayMarshaler) error
+ AddObject(key string, marshaler ObjectMarshaler) error
+
+ // Built-in types.
+ AddBinary(key string, value []byte) // for arbitrary bytes
+ AddByteString(key string, value []byte) // for UTF-8 encoded bytes
+ AddBool(key string, value bool)
+ AddComplex128(key string, value complex128)
+ AddComplex64(key string, value complex64)
+ AddDuration(key string, value time.Duration)
+ AddFloat64(key string, value float64)
+ AddFloat32(key string, value float32)
+ AddInt(key string, value int)
+ AddInt64(key string, value int64)
+ AddInt32(key string, value int32)
+ AddInt16(key string, value int16)
+ AddInt8(key string, value int8)
+ AddString(key, value string)
+ AddTime(key string, value time.Time)
+ AddUint(key string, value uint)
+ AddUint64(key string, value uint64)
+ AddUint32(key string, value uint32)
+ AddUint16(key string, value uint16)
+ AddUint8(key string, value uint8)
+ AddUintptr(key string, value uintptr)
+
+ // AddReflected uses reflection to serialize arbitrary objects, so it's slow
+ // and allocation-heavy.
+ AddReflected(key string, value interface{}) error
+ // OpenNamespace opens an isolated namespace where all subsequent fields will
+ // be added. Applications can use namespaces to prevent key collisions when
+ // injecting loggers into sub-components or third-party libraries.
+ OpenNamespace(key string)
+}
+
+// ArrayEncoder is a strongly-typed, encoding-agnostic interface for adding
+// array-like objects to the logging context. Of note, it supports mixed-type
+// arrays even though they aren't typical in Go. Like slices, ArrayEncoders
+// aren't safe for concurrent use (though typical use shouldn't require locks).
+type ArrayEncoder interface {
+ // Built-in types.
+ PrimitiveArrayEncoder
+
+ // Time-related types.
+ AppendDuration(time.Duration)
+ AppendTime(time.Time)
+
+ // Logging-specific marshalers.
+ AppendArray(ArrayMarshaler) error
+ AppendObject(ObjectMarshaler) error
+
+ // AppendReflected uses reflection to serialize arbitrary objects, so it's
+ // slow and allocation-heavy.
+ AppendReflected(value interface{}) error
+}
+
+// PrimitiveArrayEncoder is the subset of the ArrayEncoder interface that deals
+// only in Go's built-in types. It's included only so that Duration- and
+// TimeEncoders cannot trigger infinite recursion.
+type PrimitiveArrayEncoder interface {
+ // Built-in types.
+ AppendBool(bool)
+ AppendByteString([]byte) // for UTF-8 encoded bytes
+ AppendComplex128(complex128)
+ AppendComplex64(complex64)
+ AppendFloat64(float64)
+ AppendFloat32(float32)
+ AppendInt(int)
+ AppendInt64(int64)
+ AppendInt32(int32)
+ AppendInt16(int16)
+ AppendInt8(int8)
+ AppendString(string)
+ AppendUint(uint)
+ AppendUint64(uint64)
+ AppendUint32(uint32)
+ AppendUint16(uint16)
+ AppendUint8(uint8)
+ AppendUintptr(uintptr)
+}
+
+// Encoder is a format-agnostic interface for all log entry marshalers. Since
+// log encoders don't need to support the same wide range of use cases as
+// general-purpose marshalers, it's possible to make them faster and
+// lower-allocation.
+//
+// Implementations of the ObjectEncoder interface's methods can, of course,
+// freely modify the receiver. However, the Clone and EncodeEntry methods will
+// be called concurrently and shouldn't modify the receiver.
+type Encoder interface {
+ ObjectEncoder
+
+ // Clone copies the encoder, ensuring that adding fields to the copy doesn't
+ // affect the original.
+ Clone() Encoder
+
+ // EncodeEntry encodes an entry and fields, along with any accumulated
+ // context, into a byte buffer and returns it.
+ EncodeEntry(Entry, []Field) (*buffer.Buffer, error)
+}
diff --git a/vendor/go.uber.org/zap/zapcore/entry.go b/vendor/go.uber.org/zap/zapcore/entry.go
new file mode 100644
index 0000000..7d9893f
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/entry.go
@@ -0,0 +1,257 @@
+// 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 zapcore
+
+import (
+ "fmt"
+ "strings"
+ "sync"
+ "time"
+
+ "go.uber.org/zap/internal/bufferpool"
+ "go.uber.org/zap/internal/exit"
+
+ "go.uber.org/multierr"
+)
+
+var (
+ _cePool = sync.Pool{New: func() interface{} {
+ // Pre-allocate some space for cores.
+ return &CheckedEntry{
+ cores: make([]Core, 4),
+ }
+ }}
+)
+
+func getCheckedEntry() *CheckedEntry {
+ ce := _cePool.Get().(*CheckedEntry)
+ ce.reset()
+ return ce
+}
+
+func putCheckedEntry(ce *CheckedEntry) {
+ if ce == nil {
+ return
+ }
+ _cePool.Put(ce)
+}
+
+// NewEntryCaller makes an EntryCaller from the return signature of
+// runtime.Caller.
+func NewEntryCaller(pc uintptr, file string, line int, ok bool) EntryCaller {
+ if !ok {
+ return EntryCaller{}
+ }
+ return EntryCaller{
+ PC: pc,
+ File: file,
+ Line: line,
+ Defined: true,
+ }
+}
+
+// EntryCaller represents the caller of a logging function.
+type EntryCaller struct {
+ Defined bool
+ PC uintptr
+ File string
+ Line int
+}
+
+// String returns the full path and line number of the caller.
+func (ec EntryCaller) String() string {
+ return ec.FullPath()
+}
+
+// FullPath returns a /full/path/to/package/file:line description of the
+// caller.
+func (ec EntryCaller) FullPath() string {
+ if !ec.Defined {
+ return "undefined"
+ }
+ buf := bufferpool.Get()
+ buf.AppendString(ec.File)
+ buf.AppendByte(':')
+ buf.AppendInt(int64(ec.Line))
+ caller := buf.String()
+ buf.Free()
+ return caller
+}
+
+// TrimmedPath returns a package/file:line description of the caller,
+// preserving only the leaf directory name and file name.
+func (ec EntryCaller) TrimmedPath() string {
+ if !ec.Defined {
+ return "undefined"
+ }
+ // nb. To make sure we trim the path correctly on Windows too, we
+ // counter-intuitively need to use '/' and *not* os.PathSeparator here,
+ // because the path given originates from Go stdlib, specifically
+ // runtime.Caller() which (as of Mar/17) returns forward slashes even on
+ // Windows.
+ //
+ // See https://github.com/golang/go/issues/3335
+ // and https://github.com/golang/go/issues/18151
+ //
+ // for discussion on the issue on Go side.
+ //
+ // Find the last separator.
+ //
+ idx := strings.LastIndexByte(ec.File, '/')
+ if idx == -1 {
+ return ec.FullPath()
+ }
+ // Find the penultimate separator.
+ idx = strings.LastIndexByte(ec.File[:idx], '/')
+ if idx == -1 {
+ return ec.FullPath()
+ }
+ buf := bufferpool.Get()
+ // Keep everything after the penultimate separator.
+ buf.AppendString(ec.File[idx+1:])
+ buf.AppendByte(':')
+ buf.AppendInt(int64(ec.Line))
+ caller := buf.String()
+ buf.Free()
+ return caller
+}
+
+// An Entry represents a complete log message. The entry's structured context
+// is already serialized, but the log level, time, message, and call site
+// information are available for inspection and modification.
+//
+// Entries are pooled, so any functions that accept them MUST be careful not to
+// retain references to them.
+type Entry struct {
+ Level Level
+ Time time.Time
+ LoggerName string
+ Message string
+ Caller EntryCaller
+ Stack string
+}
+
+// CheckWriteAction indicates what action to take after a log entry is
+// processed. Actions are ordered in increasing severity.
+type CheckWriteAction uint8
+
+const (
+ // WriteThenNoop indicates that nothing special needs to be done. It's the
+ // default behavior.
+ WriteThenNoop CheckWriteAction = iota
+ // WriteThenPanic causes a panic after Write.
+ WriteThenPanic
+ // WriteThenFatal causes a fatal os.Exit after Write.
+ WriteThenFatal
+)
+
+// CheckedEntry is an Entry together with a collection of Cores that have
+// already agreed to log it.
+//
+// CheckedEntry references should be created by calling AddCore or Should on a
+// nil *CheckedEntry. References are returned to a pool after Write, and MUST
+// NOT be retained after calling their Write method.
+type CheckedEntry struct {
+ Entry
+ ErrorOutput WriteSyncer
+ dirty bool // best-effort detection of pool misuse
+ should CheckWriteAction
+ cores []Core
+}
+
+func (ce *CheckedEntry) reset() {
+ ce.Entry = Entry{}
+ ce.ErrorOutput = nil
+ ce.dirty = false
+ ce.should = WriteThenNoop
+ for i := range ce.cores {
+ // don't keep references to cores
+ ce.cores[i] = nil
+ }
+ ce.cores = ce.cores[:0]
+}
+
+// Write writes the entry to the stored Cores, returns any errors, and returns
+// the CheckedEntry reference to a pool for immediate re-use. Finally, it
+// executes any required CheckWriteAction.
+func (ce *CheckedEntry) Write(fields ...Field) {
+ if ce == nil {
+ return
+ }
+
+ if ce.dirty {
+ if ce.ErrorOutput != nil {
+ // Make a best effort to detect unsafe re-use of this CheckedEntry.
+ // If the entry is dirty, log an internal error; because the
+ // CheckedEntry is being used after it was returned to the pool,
+ // the message may be an amalgamation from multiple call sites.
+ fmt.Fprintf(ce.ErrorOutput, "%v Unsafe CheckedEntry re-use near Entry %+v.\n", time.Now(), ce.Entry)
+ ce.ErrorOutput.Sync()
+ }
+ return
+ }
+ ce.dirty = true
+
+ var err error
+ for i := range ce.cores {
+ err = multierr.Append(err, ce.cores[i].Write(ce.Entry, fields))
+ }
+ if ce.ErrorOutput != nil {
+ if err != nil {
+ fmt.Fprintf(ce.ErrorOutput, "%v write error: %v\n", time.Now(), err)
+ ce.ErrorOutput.Sync()
+ }
+ }
+
+ should, msg := ce.should, ce.Message
+ putCheckedEntry(ce)
+
+ switch should {
+ case WriteThenPanic:
+ panic(msg)
+ case WriteThenFatal:
+ exit.Exit()
+ }
+}
+
+// AddCore adds a Core that has agreed to log this CheckedEntry. It's intended to be
+// used by Core.Check implementations, and is safe to call on nil CheckedEntry
+// references.
+func (ce *CheckedEntry) AddCore(ent Entry, core Core) *CheckedEntry {
+ if ce == nil {
+ ce = getCheckedEntry()
+ ce.Entry = ent
+ }
+ ce.cores = append(ce.cores, core)
+ return ce
+}
+
+// Should sets this CheckedEntry's CheckWriteAction, which controls whether a
+// Core will panic or fatal after writing this log entry. Like AddCore, it's
+// safe to call on nil CheckedEntry references.
+func (ce *CheckedEntry) Should(ent Entry, should CheckWriteAction) *CheckedEntry {
+ if ce == nil {
+ ce = getCheckedEntry()
+ ce.Entry = ent
+ }
+ ce.should = should
+ return ce
+}
diff --git a/vendor/go.uber.org/zap/zapcore/error.go b/vendor/go.uber.org/zap/zapcore/error.go
new file mode 100644
index 0000000..a67c7ba
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/error.go
@@ -0,0 +1,120 @@
+// Copyright (c) 2017 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 zapcore
+
+import (
+ "fmt"
+ "sync"
+)
+
+// Encodes the given error into fields of an object. A field with the given
+// name is added for the error message.
+//
+// If the error implements fmt.Formatter, a field with the name ${key}Verbose
+// is also added with the full verbose error message.
+//
+// Finally, if the error implements errorGroup (from go.uber.org/multierr) or
+// causer (from github.com/pkg/errors), a ${key}Causes field is added with an
+// array of objects containing the errors this error was comprised of.
+//
+// {
+// "error": err.Error(),
+// "errorVerbose": fmt.Sprintf("%+v", err),
+// "errorCauses": [
+// ...
+// ],
+// }
+func encodeError(key string, err error, enc ObjectEncoder) error {
+ basic := err.Error()
+ enc.AddString(key, basic)
+
+ switch e := err.(type) {
+ case errorGroup:
+ return enc.AddArray(key+"Causes", errArray(e.Errors()))
+ case fmt.Formatter:
+ verbose := fmt.Sprintf("%+v", e)
+ if verbose != basic {
+ // This is a rich error type, like those produced by
+ // github.com/pkg/errors.
+ enc.AddString(key+"Verbose", verbose)
+ }
+ }
+ return nil
+}
+
+type errorGroup interface {
+ // Provides read-only access to the underlying list of errors, preferably
+ // without causing any allocs.
+ Errors() []error
+}
+
+type causer interface {
+ // Provides access to the error that caused this error.
+ Cause() error
+}
+
+// Note that errArry and errArrayElem are very similar to the version
+// implemented in the top-level error.go file. We can't re-use this because
+// that would require exporting errArray as part of the zapcore API.
+
+// Encodes a list of errors using the standard error encoding logic.
+type errArray []error
+
+func (errs errArray) MarshalLogArray(arr ArrayEncoder) error {
+ for i := range errs {
+ if errs[i] == nil {
+ continue
+ }
+
+ el := newErrArrayElem(errs[i])
+ arr.AppendObject(el)
+ el.Free()
+ }
+ return nil
+}
+
+var _errArrayElemPool = sync.Pool{New: func() interface{} {
+ return &errArrayElem{}
+}}
+
+// Encodes any error into a {"error": ...} re-using the same errors logic.
+//
+// May be passed in place of an array to build a single-element array.
+type errArrayElem struct{ err error }
+
+func newErrArrayElem(err error) *errArrayElem {
+ e := _errArrayElemPool.Get().(*errArrayElem)
+ e.err = err
+ return e
+}
+
+func (e *errArrayElem) MarshalLogArray(arr ArrayEncoder) error {
+ return arr.AppendObject(e)
+}
+
+func (e *errArrayElem) MarshalLogObject(enc ObjectEncoder) error {
+ return encodeError("error", e.err, enc)
+}
+
+func (e *errArrayElem) Free() {
+ e.err = nil
+ _errArrayElemPool.Put(e)
+}
diff --git a/vendor/go.uber.org/zap/zapcore/field.go b/vendor/go.uber.org/zap/zapcore/field.go
new file mode 100644
index 0000000..ae772e4
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/field.go
@@ -0,0 +1,212 @@
+// 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 zapcore
+
+import (
+ "bytes"
+ "fmt"
+ "math"
+ "reflect"
+ "time"
+)
+
+// A FieldType indicates which member of the Field union struct should be used
+// and how it should be serialized.
+type FieldType uint8
+
+const (
+ // UnknownType is the default field type. Attempting to add it to an encoder will panic.
+ UnknownType FieldType = iota
+ // ArrayMarshalerType indicates that the field carries an ArrayMarshaler.
+ ArrayMarshalerType
+ // ObjectMarshalerType indicates that the field carries an ObjectMarshaler.
+ ObjectMarshalerType
+ // BinaryType indicates that the field carries an opaque binary blob.
+ BinaryType
+ // BoolType indicates that the field carries a bool.
+ BoolType
+ // ByteStringType indicates that the field carries UTF-8 encoded bytes.
+ ByteStringType
+ // Complex128Type indicates that the field carries a complex128.
+ Complex128Type
+ // Complex64Type indicates that the field carries a complex128.
+ Complex64Type
+ // DurationType indicates that the field carries a time.Duration.
+ DurationType
+ // Float64Type indicates that the field carries a float64.
+ Float64Type
+ // Float32Type indicates that the field carries a float32.
+ Float32Type
+ // Int64Type indicates that the field carries an int64.
+ Int64Type
+ // Int32Type indicates that the field carries an int32.
+ Int32Type
+ // Int16Type indicates that the field carries an int16.
+ Int16Type
+ // Int8Type indicates that the field carries an int8.
+ Int8Type
+ // StringType indicates that the field carries a string.
+ StringType
+ // TimeType indicates that the field carries a time.Time.
+ TimeType
+ // Uint64Type indicates that the field carries a uint64.
+ Uint64Type
+ // Uint32Type indicates that the field carries a uint32.
+ Uint32Type
+ // Uint16Type indicates that the field carries a uint16.
+ Uint16Type
+ // Uint8Type indicates that the field carries a uint8.
+ Uint8Type
+ // UintptrType indicates that the field carries a uintptr.
+ UintptrType
+ // ReflectType indicates that the field carries an interface{}, which should
+ // be serialized using reflection.
+ ReflectType
+ // NamespaceType signals the beginning of an isolated namespace. All
+ // subsequent fields should be added to the new namespace.
+ NamespaceType
+ // StringerType indicates that the field carries a fmt.Stringer.
+ StringerType
+ // ErrorType indicates that the field carries an error.
+ ErrorType
+ // SkipType indicates that the field is a no-op.
+ SkipType
+)
+
+// A Field is a marshaling operation used to add a key-value pair to a logger's
+// context. Most fields are lazily marshaled, so it's inexpensive to add fields
+// to disabled debug-level log statements.
+type Field struct {
+ Key string
+ Type FieldType
+ Integer int64
+ String string
+ Interface interface{}
+}
+
+// AddTo exports a field through the ObjectEncoder interface. It's primarily
+// useful to library authors, and shouldn't be necessary in most applications.
+func (f Field) AddTo(enc ObjectEncoder) {
+ var err error
+
+ switch f.Type {
+ case ArrayMarshalerType:
+ err = enc.AddArray(f.Key, f.Interface.(ArrayMarshaler))
+ case ObjectMarshalerType:
+ err = enc.AddObject(f.Key, f.Interface.(ObjectMarshaler))
+ case BinaryType:
+ enc.AddBinary(f.Key, f.Interface.([]byte))
+ case BoolType:
+ enc.AddBool(f.Key, f.Integer == 1)
+ case ByteStringType:
+ enc.AddByteString(f.Key, f.Interface.([]byte))
+ case Complex128Type:
+ enc.AddComplex128(f.Key, f.Interface.(complex128))
+ case Complex64Type:
+ enc.AddComplex64(f.Key, f.Interface.(complex64))
+ case DurationType:
+ enc.AddDuration(f.Key, time.Duration(f.Integer))
+ case Float64Type:
+ enc.AddFloat64(f.Key, math.Float64frombits(uint64(f.Integer)))
+ case Float32Type:
+ enc.AddFloat32(f.Key, math.Float32frombits(uint32(f.Integer)))
+ case Int64Type:
+ enc.AddInt64(f.Key, f.Integer)
+ case Int32Type:
+ enc.AddInt32(f.Key, int32(f.Integer))
+ case Int16Type:
+ enc.AddInt16(f.Key, int16(f.Integer))
+ case Int8Type:
+ enc.AddInt8(f.Key, int8(f.Integer))
+ case StringType:
+ enc.AddString(f.Key, f.String)
+ case TimeType:
+ if f.Interface != nil {
+ enc.AddTime(f.Key, time.Unix(0, f.Integer).In(f.Interface.(*time.Location)))
+ } else {
+ // Fall back to UTC if location is nil.
+ enc.AddTime(f.Key, time.Unix(0, f.Integer))
+ }
+ case Uint64Type:
+ enc.AddUint64(f.Key, uint64(f.Integer))
+ case Uint32Type:
+ enc.AddUint32(f.Key, uint32(f.Integer))
+ case Uint16Type:
+ enc.AddUint16(f.Key, uint16(f.Integer))
+ case Uint8Type:
+ enc.AddUint8(f.Key, uint8(f.Integer))
+ case UintptrType:
+ enc.AddUintptr(f.Key, uintptr(f.Integer))
+ case ReflectType:
+ err = enc.AddReflected(f.Key, f.Interface)
+ case NamespaceType:
+ enc.OpenNamespace(f.Key)
+ case StringerType:
+ err = encodeStringer(f.Key, f.Interface, enc)
+ case ErrorType:
+ encodeError(f.Key, f.Interface.(error), enc)
+ case SkipType:
+ break
+ default:
+ panic(fmt.Sprintf("unknown field type: %v", f))
+ }
+
+ if err != nil {
+ enc.AddString(fmt.Sprintf("%sError", f.Key), err.Error())
+ }
+}
+
+// Equals returns whether two fields are equal. For non-primitive types such as
+// errors, marshalers, or reflect types, it uses reflect.DeepEqual.
+func (f Field) Equals(other Field) bool {
+ if f.Type != other.Type {
+ return false
+ }
+ if f.Key != other.Key {
+ return false
+ }
+
+ switch f.Type {
+ case BinaryType, ByteStringType:
+ return bytes.Equal(f.Interface.([]byte), other.Interface.([]byte))
+ case ArrayMarshalerType, ObjectMarshalerType, ErrorType, ReflectType:
+ return reflect.DeepEqual(f.Interface, other.Interface)
+ default:
+ return f == other
+ }
+}
+
+func addFields(enc ObjectEncoder, fields []Field) {
+ for i := range fields {
+ fields[i].AddTo(enc)
+ }
+}
+
+func encodeStringer(key string, stringer interface{}, enc ObjectEncoder) (err error) {
+ defer func() {
+ if v := recover(); v != nil {
+ err = fmt.Errorf("PANIC=%v", v)
+ }
+ }()
+
+ enc.AddString(key, stringer.(fmt.Stringer).String())
+ return
+}
diff --git a/vendor/go.uber.org/zap/zapcore/hook.go b/vendor/go.uber.org/zap/zapcore/hook.go
new file mode 100644
index 0000000..5db4afb
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/hook.go
@@ -0,0 +1,68 @@
+// 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 zapcore
+
+import "go.uber.org/multierr"
+
+type hooked struct {
+ Core
+ funcs []func(Entry) error
+}
+
+// RegisterHooks wraps a Core and runs a collection of user-defined callback
+// hooks each time a message is logged. Execution of the callbacks is blocking.
+//
+// This offers users an easy way to register simple callbacks (e.g., metrics
+// collection) without implementing the full Core interface.
+func RegisterHooks(core Core, hooks ...func(Entry) error) Core {
+ funcs := append([]func(Entry) error{}, hooks...)
+ return &hooked{
+ Core: core,
+ funcs: funcs,
+ }
+}
+
+func (h *hooked) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
+ // Let the wrapped Core decide whether to log this message or not. This
+ // also gives the downstream a chance to register itself directly with the
+ // CheckedEntry.
+ if downstream := h.Core.Check(ent, ce); downstream != nil {
+ return downstream.AddCore(ent, h)
+ }
+ return ce
+}
+
+func (h *hooked) With(fields []Field) Core {
+ return &hooked{
+ Core: h.Core.With(fields),
+ funcs: h.funcs,
+ }
+}
+
+func (h *hooked) Write(ent Entry, _ []Field) error {
+ // Since our downstream had a chance to register itself directly with the
+ // CheckedMessage, we don't need to call it here.
+ var err error
+ for i := range h.funcs {
+ err = multierr.Append(err, h.funcs[i](ent))
+ }
+ return err
+}
diff --git a/vendor/go.uber.org/zap/zapcore/json_encoder.go b/vendor/go.uber.org/zap/zapcore/json_encoder.go
new file mode 100644
index 0000000..9aec4ea
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/json_encoder.go
@@ -0,0 +1,505 @@
+// 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 zapcore
+
+import (
+ "encoding/base64"
+ "encoding/json"
+ "math"
+ "sync"
+ "time"
+ "unicode/utf8"
+
+ "go.uber.org/zap/buffer"
+ "go.uber.org/zap/internal/bufferpool"
+)
+
+// For JSON-escaping; see jsonEncoder.safeAddString below.
+const _hex = "0123456789abcdef"
+
+var _jsonPool = sync.Pool{New: func() interface{} {
+ return &jsonEncoder{}
+}}
+
+func getJSONEncoder() *jsonEncoder {
+ return _jsonPool.Get().(*jsonEncoder)
+}
+
+func putJSONEncoder(enc *jsonEncoder) {
+ if enc.reflectBuf != nil {
+ enc.reflectBuf.Free()
+ }
+ enc.EncoderConfig = nil
+ enc.buf = nil
+ enc.spaced = false
+ enc.openNamespaces = 0
+ enc.reflectBuf = nil
+ enc.reflectEnc = nil
+ _jsonPool.Put(enc)
+}
+
+type jsonEncoder struct {
+ *EncoderConfig
+ buf *buffer.Buffer
+ spaced bool // include spaces after colons and commas
+ openNamespaces int
+
+ // for encoding generic values by reflection
+ reflectBuf *buffer.Buffer
+ reflectEnc *json.Encoder
+}
+
+// NewJSONEncoder creates a fast, low-allocation JSON encoder. The encoder
+// appropriately escapes all field keys and values.
+//
+// Note that the encoder doesn't deduplicate keys, so it's possible to produce
+// a message like
+// {"foo":"bar","foo":"baz"}
+// This is permitted by the JSON specification, but not encouraged. Many
+// libraries will ignore duplicate key-value pairs (typically keeping the last
+// pair) when unmarshaling, but users should attempt to avoid adding duplicate
+// keys.
+func NewJSONEncoder(cfg EncoderConfig) Encoder {
+ return newJSONEncoder(cfg, false)
+}
+
+func newJSONEncoder(cfg EncoderConfig, spaced bool) *jsonEncoder {
+ return &jsonEncoder{
+ EncoderConfig: &cfg,
+ buf: bufferpool.Get(),
+ spaced: spaced,
+ }
+}
+
+func (enc *jsonEncoder) AddArray(key string, arr ArrayMarshaler) error {
+ enc.addKey(key)
+ return enc.AppendArray(arr)
+}
+
+func (enc *jsonEncoder) AddObject(key string, obj ObjectMarshaler) error {
+ enc.addKey(key)
+ return enc.AppendObject(obj)
+}
+
+func (enc *jsonEncoder) AddBinary(key string, val []byte) {
+ enc.AddString(key, base64.StdEncoding.EncodeToString(val))
+}
+
+func (enc *jsonEncoder) AddByteString(key string, val []byte) {
+ enc.addKey(key)
+ enc.AppendByteString(val)
+}
+
+func (enc *jsonEncoder) AddBool(key string, val bool) {
+ enc.addKey(key)
+ enc.AppendBool(val)
+}
+
+func (enc *jsonEncoder) AddComplex128(key string, val complex128) {
+ enc.addKey(key)
+ enc.AppendComplex128(val)
+}
+
+func (enc *jsonEncoder) AddDuration(key string, val time.Duration) {
+ enc.addKey(key)
+ enc.AppendDuration(val)
+}
+
+func (enc *jsonEncoder) AddFloat64(key string, val float64) {
+ enc.addKey(key)
+ enc.AppendFloat64(val)
+}
+
+func (enc *jsonEncoder) AddInt64(key string, val int64) {
+ enc.addKey(key)
+ enc.AppendInt64(val)
+}
+
+func (enc *jsonEncoder) resetReflectBuf() {
+ if enc.reflectBuf == nil {
+ enc.reflectBuf = bufferpool.Get()
+ enc.reflectEnc = json.NewEncoder(enc.reflectBuf)
+
+ // For consistency with our custom JSON encoder.
+ enc.reflectEnc.SetEscapeHTML(false)
+ } else {
+ enc.reflectBuf.Reset()
+ }
+}
+
+func (enc *jsonEncoder) AddReflected(key string, obj interface{}) error {
+ enc.resetReflectBuf()
+ err := enc.reflectEnc.Encode(obj)
+ if err != nil {
+ return err
+ }
+ enc.reflectBuf.TrimNewline()
+ enc.addKey(key)
+ _, err = enc.buf.Write(enc.reflectBuf.Bytes())
+ return err
+}
+
+func (enc *jsonEncoder) OpenNamespace(key string) {
+ enc.addKey(key)
+ enc.buf.AppendByte('{')
+ enc.openNamespaces++
+}
+
+func (enc *jsonEncoder) AddString(key, val string) {
+ enc.addKey(key)
+ enc.AppendString(val)
+}
+
+func (enc *jsonEncoder) AddTime(key string, val time.Time) {
+ enc.addKey(key)
+ enc.AppendTime(val)
+}
+
+func (enc *jsonEncoder) AddUint64(key string, val uint64) {
+ enc.addKey(key)
+ enc.AppendUint64(val)
+}
+
+func (enc *jsonEncoder) AppendArray(arr ArrayMarshaler) error {
+ enc.addElementSeparator()
+ enc.buf.AppendByte('[')
+ err := arr.MarshalLogArray(enc)
+ enc.buf.AppendByte(']')
+ return err
+}
+
+func (enc *jsonEncoder) AppendObject(obj ObjectMarshaler) error {
+ enc.addElementSeparator()
+ enc.buf.AppendByte('{')
+ err := obj.MarshalLogObject(enc)
+ enc.buf.AppendByte('}')
+ return err
+}
+
+func (enc *jsonEncoder) AppendBool(val bool) {
+ enc.addElementSeparator()
+ enc.buf.AppendBool(val)
+}
+
+func (enc *jsonEncoder) AppendByteString(val []byte) {
+ enc.addElementSeparator()
+ enc.buf.AppendByte('"')
+ enc.safeAddByteString(val)
+ enc.buf.AppendByte('"')
+}
+
+func (enc *jsonEncoder) AppendComplex128(val complex128) {
+ enc.addElementSeparator()
+ // Cast to a platform-independent, fixed-size type.
+ r, i := float64(real(val)), float64(imag(val))
+ enc.buf.AppendByte('"')
+ // Because we're always in a quoted string, we can use strconv without
+ // special-casing NaN and +/-Inf.
+ enc.buf.AppendFloat(r, 64)
+ enc.buf.AppendByte('+')
+ enc.buf.AppendFloat(i, 64)
+ enc.buf.AppendByte('i')
+ enc.buf.AppendByte('"')
+}
+
+func (enc *jsonEncoder) AppendDuration(val time.Duration) {
+ cur := enc.buf.Len()
+ enc.EncodeDuration(val, enc)
+ if cur == enc.buf.Len() {
+ // User-supplied EncodeDuration is a no-op. Fall back to nanoseconds to keep
+ // JSON valid.
+ enc.AppendInt64(int64(val))
+ }
+}
+
+func (enc *jsonEncoder) AppendInt64(val int64) {
+ enc.addElementSeparator()
+ enc.buf.AppendInt(val)
+}
+
+func (enc *jsonEncoder) AppendReflected(val interface{}) error {
+ enc.resetReflectBuf()
+ err := enc.reflectEnc.Encode(val)
+ if err != nil {
+ return err
+ }
+ enc.reflectBuf.TrimNewline()
+ enc.addElementSeparator()
+ _, err = enc.buf.Write(enc.reflectBuf.Bytes())
+ return err
+}
+
+func (enc *jsonEncoder) AppendString(val string) {
+ enc.addElementSeparator()
+ enc.buf.AppendByte('"')
+ enc.safeAddString(val)
+ enc.buf.AppendByte('"')
+}
+
+func (enc *jsonEncoder) AppendTime(val time.Time) {
+ cur := enc.buf.Len()
+ enc.EncodeTime(val, enc)
+ if cur == enc.buf.Len() {
+ // User-supplied EncodeTime is a no-op. Fall back to nanos since epoch to keep
+ // output JSON valid.
+ enc.AppendInt64(val.UnixNano())
+ }
+}
+
+func (enc *jsonEncoder) AppendUint64(val uint64) {
+ enc.addElementSeparator()
+ enc.buf.AppendUint(val)
+}
+
+func (enc *jsonEncoder) AddComplex64(k string, v complex64) { enc.AddComplex128(k, complex128(v)) }
+func (enc *jsonEncoder) AddFloat32(k string, v float32) { enc.AddFloat64(k, float64(v)) }
+func (enc *jsonEncoder) AddInt(k string, v int) { enc.AddInt64(k, int64(v)) }
+func (enc *jsonEncoder) AddInt32(k string, v int32) { enc.AddInt64(k, int64(v)) }
+func (enc *jsonEncoder) AddInt16(k string, v int16) { enc.AddInt64(k, int64(v)) }
+func (enc *jsonEncoder) AddInt8(k string, v int8) { enc.AddInt64(k, int64(v)) }
+func (enc *jsonEncoder) AddUint(k string, v uint) { enc.AddUint64(k, uint64(v)) }
+func (enc *jsonEncoder) AddUint32(k string, v uint32) { enc.AddUint64(k, uint64(v)) }
+func (enc *jsonEncoder) AddUint16(k string, v uint16) { enc.AddUint64(k, uint64(v)) }
+func (enc *jsonEncoder) AddUint8(k string, v uint8) { enc.AddUint64(k, uint64(v)) }
+func (enc *jsonEncoder) AddUintptr(k string, v uintptr) { enc.AddUint64(k, uint64(v)) }
+func (enc *jsonEncoder) AppendComplex64(v complex64) { enc.AppendComplex128(complex128(v)) }
+func (enc *jsonEncoder) AppendFloat64(v float64) { enc.appendFloat(v, 64) }
+func (enc *jsonEncoder) AppendFloat32(v float32) { enc.appendFloat(float64(v), 32) }
+func (enc *jsonEncoder) AppendInt(v int) { enc.AppendInt64(int64(v)) }
+func (enc *jsonEncoder) AppendInt32(v int32) { enc.AppendInt64(int64(v)) }
+func (enc *jsonEncoder) AppendInt16(v int16) { enc.AppendInt64(int64(v)) }
+func (enc *jsonEncoder) AppendInt8(v int8) { enc.AppendInt64(int64(v)) }
+func (enc *jsonEncoder) AppendUint(v uint) { enc.AppendUint64(uint64(v)) }
+func (enc *jsonEncoder) AppendUint32(v uint32) { enc.AppendUint64(uint64(v)) }
+func (enc *jsonEncoder) AppendUint16(v uint16) { enc.AppendUint64(uint64(v)) }
+func (enc *jsonEncoder) AppendUint8(v uint8) { enc.AppendUint64(uint64(v)) }
+func (enc *jsonEncoder) AppendUintptr(v uintptr) { enc.AppendUint64(uint64(v)) }
+
+func (enc *jsonEncoder) Clone() Encoder {
+ clone := enc.clone()
+ clone.buf.Write(enc.buf.Bytes())
+ return clone
+}
+
+func (enc *jsonEncoder) clone() *jsonEncoder {
+ clone := getJSONEncoder()
+ clone.EncoderConfig = enc.EncoderConfig
+ clone.spaced = enc.spaced
+ clone.openNamespaces = enc.openNamespaces
+ clone.buf = bufferpool.Get()
+ return clone
+}
+
+func (enc *jsonEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer, error) {
+ final := enc.clone()
+ final.buf.AppendByte('{')
+
+ if final.LevelKey != "" {
+ final.addKey(final.LevelKey)
+ cur := final.buf.Len()
+ final.EncodeLevel(ent.Level, final)
+ if cur == final.buf.Len() {
+ // User-supplied EncodeLevel was a no-op. Fall back to strings to keep
+ // output JSON valid.
+ final.AppendString(ent.Level.String())
+ }
+ }
+ if final.TimeKey != "" {
+ final.AddTime(final.TimeKey, ent.Time)
+ }
+ if ent.LoggerName != "" && final.NameKey != "" {
+ final.addKey(final.NameKey)
+ cur := final.buf.Len()
+ nameEncoder := final.EncodeName
+
+ // if no name encoder provided, fall back to FullNameEncoder for backwards
+ // compatibility
+ if nameEncoder == nil {
+ nameEncoder = FullNameEncoder
+ }
+
+ nameEncoder(ent.LoggerName, final)
+ if cur == final.buf.Len() {
+ // User-supplied EncodeName was a no-op. Fall back to strings to
+ // keep output JSON valid.
+ final.AppendString(ent.LoggerName)
+ }
+ }
+ if ent.Caller.Defined && final.CallerKey != "" {
+ final.addKey(final.CallerKey)
+ cur := final.buf.Len()
+ final.EncodeCaller(ent.Caller, final)
+ if cur == final.buf.Len() {
+ // User-supplied EncodeCaller was a no-op. Fall back to strings to
+ // keep output JSON valid.
+ final.AppendString(ent.Caller.String())
+ }
+ }
+ if final.MessageKey != "" {
+ final.addKey(enc.MessageKey)
+ final.AppendString(ent.Message)
+ }
+ if enc.buf.Len() > 0 {
+ final.addElementSeparator()
+ final.buf.Write(enc.buf.Bytes())
+ }
+ addFields(final, fields)
+ final.closeOpenNamespaces()
+ if ent.Stack != "" && final.StacktraceKey != "" {
+ final.AddString(final.StacktraceKey, ent.Stack)
+ }
+ final.buf.AppendByte('}')
+ if final.LineEnding != "" {
+ final.buf.AppendString(final.LineEnding)
+ } else {
+ final.buf.AppendString(DefaultLineEnding)
+ }
+
+ ret := final.buf
+ putJSONEncoder(final)
+ return ret, nil
+}
+
+func (enc *jsonEncoder) truncate() {
+ enc.buf.Reset()
+}
+
+func (enc *jsonEncoder) closeOpenNamespaces() {
+ for i := 0; i < enc.openNamespaces; i++ {
+ enc.buf.AppendByte('}')
+ }
+}
+
+func (enc *jsonEncoder) addKey(key string) {
+ enc.addElementSeparator()
+ enc.buf.AppendByte('"')
+ enc.safeAddString(key)
+ enc.buf.AppendByte('"')
+ enc.buf.AppendByte(':')
+ if enc.spaced {
+ enc.buf.AppendByte(' ')
+ }
+}
+
+func (enc *jsonEncoder) addElementSeparator() {
+ last := enc.buf.Len() - 1
+ if last < 0 {
+ return
+ }
+ switch enc.buf.Bytes()[last] {
+ case '{', '[', ':', ',', ' ':
+ return
+ default:
+ enc.buf.AppendByte(',')
+ if enc.spaced {
+ enc.buf.AppendByte(' ')
+ }
+ }
+}
+
+func (enc *jsonEncoder) appendFloat(val float64, bitSize int) {
+ enc.addElementSeparator()
+ switch {
+ case math.IsNaN(val):
+ enc.buf.AppendString(`"NaN"`)
+ case math.IsInf(val, 1):
+ enc.buf.AppendString(`"+Inf"`)
+ case math.IsInf(val, -1):
+ enc.buf.AppendString(`"-Inf"`)
+ default:
+ enc.buf.AppendFloat(val, bitSize)
+ }
+}
+
+// safeAddString JSON-escapes a string and appends it to the internal buffer.
+// Unlike the standard library's encoder, it doesn't attempt to protect the
+// user from browser vulnerabilities or JSONP-related problems.
+func (enc *jsonEncoder) safeAddString(s string) {
+ for i := 0; i < len(s); {
+ if enc.tryAddRuneSelf(s[i]) {
+ i++
+ continue
+ }
+ r, size := utf8.DecodeRuneInString(s[i:])
+ if enc.tryAddRuneError(r, size) {
+ i++
+ continue
+ }
+ enc.buf.AppendString(s[i : i+size])
+ i += size
+ }
+}
+
+// safeAddByteString is no-alloc equivalent of safeAddString(string(s)) for s []byte.
+func (enc *jsonEncoder) safeAddByteString(s []byte) {
+ for i := 0; i < len(s); {
+ if enc.tryAddRuneSelf(s[i]) {
+ i++
+ continue
+ }
+ r, size := utf8.DecodeRune(s[i:])
+ if enc.tryAddRuneError(r, size) {
+ i++
+ continue
+ }
+ enc.buf.Write(s[i : i+size])
+ i += size
+ }
+}
+
+// tryAddRuneSelf appends b if it is valid UTF-8 character represented in a single byte.
+func (enc *jsonEncoder) tryAddRuneSelf(b byte) bool {
+ if b >= utf8.RuneSelf {
+ return false
+ }
+ if 0x20 <= b && b != '\\' && b != '"' {
+ enc.buf.AppendByte(b)
+ return true
+ }
+ switch b {
+ case '\\', '"':
+ enc.buf.AppendByte('\\')
+ enc.buf.AppendByte(b)
+ case '\n':
+ enc.buf.AppendByte('\\')
+ enc.buf.AppendByte('n')
+ case '\r':
+ enc.buf.AppendByte('\\')
+ enc.buf.AppendByte('r')
+ case '\t':
+ enc.buf.AppendByte('\\')
+ enc.buf.AppendByte('t')
+ default:
+ // Encode bytes < 0x20, except for the escape sequences above.
+ enc.buf.AppendString(`\u00`)
+ enc.buf.AppendByte(_hex[b>>4])
+ enc.buf.AppendByte(_hex[b&0xF])
+ }
+ return true
+}
+
+func (enc *jsonEncoder) tryAddRuneError(r rune, size int) bool {
+ if r == utf8.RuneError && size == 1 {
+ enc.buf.AppendString(`\ufffd`)
+ return true
+ }
+ return false
+}
diff --git a/vendor/go.uber.org/zap/zapcore/level.go b/vendor/go.uber.org/zap/zapcore/level.go
new file mode 100644
index 0000000..e575c9f
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/level.go
@@ -0,0 +1,175 @@
+// 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 zapcore
+
+import (
+ "bytes"
+ "errors"
+ "fmt"
+)
+
+var errUnmarshalNilLevel = errors.New("can't unmarshal a nil *Level")
+
+// A Level is a logging priority. Higher levels are more important.
+type Level int8
+
+const (
+ // DebugLevel logs are typically voluminous, and are usually disabled in
+ // production.
+ DebugLevel Level = iota - 1
+ // InfoLevel is the default logging priority.
+ InfoLevel
+ // WarnLevel logs are more important than Info, but don't need individual
+ // human review.
+ WarnLevel
+ // ErrorLevel logs are high-priority. If an application is running smoothly,
+ // it shouldn't generate any error-level logs.
+ ErrorLevel
+ // DPanicLevel logs are particularly important errors. In development the
+ // logger panics after writing the message.
+ DPanicLevel
+ // PanicLevel logs a message, then panics.
+ PanicLevel
+ // FatalLevel logs a message, then calls os.Exit(1).
+ FatalLevel
+
+ _minLevel = DebugLevel
+ _maxLevel = FatalLevel
+)
+
+// String returns a lower-case ASCII representation of the log level.
+func (l Level) String() string {
+ switch l {
+ case DebugLevel:
+ return "debug"
+ case InfoLevel:
+ return "info"
+ case WarnLevel:
+ return "warn"
+ case ErrorLevel:
+ return "error"
+ case DPanicLevel:
+ return "dpanic"
+ case PanicLevel:
+ return "panic"
+ case FatalLevel:
+ return "fatal"
+ default:
+ return fmt.Sprintf("Level(%d)", l)
+ }
+}
+
+// CapitalString returns an all-caps ASCII representation of the log level.
+func (l Level) CapitalString() string {
+ // Printing levels in all-caps is common enough that we should export this
+ // functionality.
+ switch l {
+ case DebugLevel:
+ return "DEBUG"
+ case InfoLevel:
+ return "INFO"
+ case WarnLevel:
+ return "WARN"
+ case ErrorLevel:
+ return "ERROR"
+ case DPanicLevel:
+ return "DPANIC"
+ case PanicLevel:
+ return "PANIC"
+ case FatalLevel:
+ return "FATAL"
+ default:
+ return fmt.Sprintf("LEVEL(%d)", l)
+ }
+}
+
+// MarshalText marshals the Level to text. Note that the text representation
+// drops the -Level suffix (see example).
+func (l Level) MarshalText() ([]byte, error) {
+ return []byte(l.String()), nil
+}
+
+// UnmarshalText unmarshals text to a level. Like MarshalText, UnmarshalText
+// expects the text representation of a Level to drop the -Level suffix (see
+// example).
+//
+// In particular, this makes it easy to configure logging levels using YAML,
+// TOML, or JSON files.
+func (l *Level) UnmarshalText(text []byte) error {
+ if l == nil {
+ return errUnmarshalNilLevel
+ }
+ if !l.unmarshalText(text) && !l.unmarshalText(bytes.ToLower(text)) {
+ return fmt.Errorf("unrecognized level: %q", text)
+ }
+ return nil
+}
+
+func (l *Level) unmarshalText(text []byte) bool {
+ switch string(text) {
+ case "debug", "DEBUG":
+ *l = DebugLevel
+ case "info", "INFO", "": // make the zero value useful
+ *l = InfoLevel
+ case "warn", "WARN":
+ *l = WarnLevel
+ case "error", "ERROR":
+ *l = ErrorLevel
+ case "dpanic", "DPANIC":
+ *l = DPanicLevel
+ case "panic", "PANIC":
+ *l = PanicLevel
+ case "fatal", "FATAL":
+ *l = FatalLevel
+ default:
+ return false
+ }
+ return true
+}
+
+// Set sets the level for the flag.Value interface.
+func (l *Level) Set(s string) error {
+ return l.UnmarshalText([]byte(s))
+}
+
+// Get gets the level for the flag.Getter interface.
+func (l *Level) Get() interface{} {
+ return *l
+}
+
+// Enabled returns true if the given level is at or above this level.
+func (l Level) Enabled(lvl Level) bool {
+ return lvl >= l
+}
+
+// LevelEnabler decides whether a given logging level is enabled when logging a
+// message.
+//
+// Enablers are intended to be used to implement deterministic filters;
+// concerns like sampling are better implemented as a Core.
+//
+// Each concrete Level value implements a static LevelEnabler which returns
+// true for itself and all higher logging levels. For example WarnLevel.Enabled()
+// will return true for WarnLevel, ErrorLevel, DPanicLevel, PanicLevel, and
+// FatalLevel, but return false for InfoLevel and DebugLevel.
+type LevelEnabler interface {
+ Enabled(Level) bool
+}
diff --git a/vendor/go.uber.org/zap/zapcore/level_strings.go b/vendor/go.uber.org/zap/zapcore/level_strings.go
new file mode 100644
index 0000000..7af8dad
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/level_strings.go
@@ -0,0 +1,46 @@
+// 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 zapcore
+
+import "go.uber.org/zap/internal/color"
+
+var (
+ _levelToColor = map[Level]color.Color{
+ DebugLevel: color.Magenta,
+ InfoLevel: color.Blue,
+ WarnLevel: color.Yellow,
+ ErrorLevel: color.Red,
+ DPanicLevel: color.Red,
+ PanicLevel: color.Red,
+ FatalLevel: color.Red,
+ }
+ _unknownLevelColor = color.Red
+
+ _levelToLowercaseColorString = make(map[Level]string, len(_levelToColor))
+ _levelToCapitalColorString = make(map[Level]string, len(_levelToColor))
+)
+
+func init() {
+ for level, color := range _levelToColor {
+ _levelToLowercaseColorString[level] = color.Add(level.String())
+ _levelToCapitalColorString[level] = color.Add(level.CapitalString())
+ }
+}
diff --git a/vendor/go.uber.org/zap/zapcore/marshaler.go b/vendor/go.uber.org/zap/zapcore/marshaler.go
new file mode 100644
index 0000000..2627a65
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/marshaler.go
@@ -0,0 +1,53 @@
+// 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 zapcore
+
+// ObjectMarshaler allows user-defined types to efficiently add themselves to the
+// logging context, and to selectively omit information which shouldn't be
+// included in logs (e.g., passwords).
+type ObjectMarshaler interface {
+ MarshalLogObject(ObjectEncoder) error
+}
+
+// ObjectMarshalerFunc is a type adapter that turns a function into an
+// ObjectMarshaler.
+type ObjectMarshalerFunc func(ObjectEncoder) error
+
+// MarshalLogObject calls the underlying function.
+func (f ObjectMarshalerFunc) MarshalLogObject(enc ObjectEncoder) error {
+ return f(enc)
+}
+
+// ArrayMarshaler allows user-defined types to efficiently add themselves to the
+// logging context, and to selectively omit information which shouldn't be
+// included in logs (e.g., passwords).
+type ArrayMarshaler interface {
+ MarshalLogArray(ArrayEncoder) error
+}
+
+// ArrayMarshalerFunc is a type adapter that turns a function into an
+// ArrayMarshaler.
+type ArrayMarshalerFunc func(ArrayEncoder) error
+
+// MarshalLogArray calls the underlying function.
+func (f ArrayMarshalerFunc) MarshalLogArray(enc ArrayEncoder) error {
+ return f(enc)
+}
diff --git a/vendor/go.uber.org/zap/zapcore/memory_encoder.go b/vendor/go.uber.org/zap/zapcore/memory_encoder.go
new file mode 100644
index 0000000..dfead08
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/memory_encoder.go
@@ -0,0 +1,179 @@
+// 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 zapcore
+
+import "time"
+
+// MapObjectEncoder is an ObjectEncoder backed by a simple
+// map[string]interface{}. It's not fast enough for production use, but it's
+// helpful in tests.
+type MapObjectEncoder struct {
+ // Fields contains the entire encoded log context.
+ Fields map[string]interface{}
+ // cur is a pointer to the namespace we're currently writing to.
+ cur map[string]interface{}
+}
+
+// NewMapObjectEncoder creates a new map-backed ObjectEncoder.
+func NewMapObjectEncoder() *MapObjectEncoder {
+ m := make(map[string]interface{})
+ return &MapObjectEncoder{
+ Fields: m,
+ cur: m,
+ }
+}
+
+// AddArray implements ObjectEncoder.
+func (m *MapObjectEncoder) AddArray(key string, v ArrayMarshaler) error {
+ arr := &sliceArrayEncoder{elems: make([]interface{}, 0)}
+ err := v.MarshalLogArray(arr)
+ m.cur[key] = arr.elems
+ return err
+}
+
+// AddObject implements ObjectEncoder.
+func (m *MapObjectEncoder) AddObject(k string, v ObjectMarshaler) error {
+ newMap := NewMapObjectEncoder()
+ m.cur[k] = newMap.Fields
+ return v.MarshalLogObject(newMap)
+}
+
+// AddBinary implements ObjectEncoder.
+func (m *MapObjectEncoder) AddBinary(k string, v []byte) { m.cur[k] = v }
+
+// AddByteString implements ObjectEncoder.
+func (m *MapObjectEncoder) AddByteString(k string, v []byte) { m.cur[k] = string(v) }
+
+// AddBool implements ObjectEncoder.
+func (m *MapObjectEncoder) AddBool(k string, v bool) { m.cur[k] = v }
+
+// AddDuration implements ObjectEncoder.
+func (m MapObjectEncoder) AddDuration(k string, v time.Duration) { m.cur[k] = v }
+
+// AddComplex128 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddComplex128(k string, v complex128) { m.cur[k] = v }
+
+// AddComplex64 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddComplex64(k string, v complex64) { m.cur[k] = v }
+
+// AddFloat64 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddFloat64(k string, v float64) { m.cur[k] = v }
+
+// AddFloat32 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddFloat32(k string, v float32) { m.cur[k] = v }
+
+// AddInt implements ObjectEncoder.
+func (m *MapObjectEncoder) AddInt(k string, v int) { m.cur[k] = v }
+
+// AddInt64 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddInt64(k string, v int64) { m.cur[k] = v }
+
+// AddInt32 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddInt32(k string, v int32) { m.cur[k] = v }
+
+// AddInt16 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddInt16(k string, v int16) { m.cur[k] = v }
+
+// AddInt8 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddInt8(k string, v int8) { m.cur[k] = v }
+
+// AddString implements ObjectEncoder.
+func (m *MapObjectEncoder) AddString(k string, v string) { m.cur[k] = v }
+
+// AddTime implements ObjectEncoder.
+func (m MapObjectEncoder) AddTime(k string, v time.Time) { m.cur[k] = v }
+
+// AddUint implements ObjectEncoder.
+func (m *MapObjectEncoder) AddUint(k string, v uint) { m.cur[k] = v }
+
+// AddUint64 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddUint64(k string, v uint64) { m.cur[k] = v }
+
+// AddUint32 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddUint32(k string, v uint32) { m.cur[k] = v }
+
+// AddUint16 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddUint16(k string, v uint16) { m.cur[k] = v }
+
+// AddUint8 implements ObjectEncoder.
+func (m *MapObjectEncoder) AddUint8(k string, v uint8) { m.cur[k] = v }
+
+// AddUintptr implements ObjectEncoder.
+func (m *MapObjectEncoder) AddUintptr(k string, v uintptr) { m.cur[k] = v }
+
+// AddReflected implements ObjectEncoder.
+func (m *MapObjectEncoder) AddReflected(k string, v interface{}) error {
+ m.cur[k] = v
+ return nil
+}
+
+// OpenNamespace implements ObjectEncoder.
+func (m *MapObjectEncoder) OpenNamespace(k string) {
+ ns := make(map[string]interface{})
+ m.cur[k] = ns
+ m.cur = ns
+}
+
+// sliceArrayEncoder is an ArrayEncoder backed by a simple []interface{}. Like
+// the MapObjectEncoder, it's not designed for production use.
+type sliceArrayEncoder struct {
+ elems []interface{}
+}
+
+func (s *sliceArrayEncoder) AppendArray(v ArrayMarshaler) error {
+ enc := &sliceArrayEncoder{}
+ err := v.MarshalLogArray(enc)
+ s.elems = append(s.elems, enc.elems)
+ return err
+}
+
+func (s *sliceArrayEncoder) AppendObject(v ObjectMarshaler) error {
+ m := NewMapObjectEncoder()
+ err := v.MarshalLogObject(m)
+ s.elems = append(s.elems, m.Fields)
+ return err
+}
+
+func (s *sliceArrayEncoder) AppendReflected(v interface{}) error {
+ s.elems = append(s.elems, v)
+ return nil
+}
+
+func (s *sliceArrayEncoder) AppendBool(v bool) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendByteString(v []byte) { s.elems = append(s.elems, string(v)) }
+func (s *sliceArrayEncoder) AppendComplex128(v complex128) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendComplex64(v complex64) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendDuration(v time.Duration) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendFloat64(v float64) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendFloat32(v float32) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendInt(v int) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendInt64(v int64) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendInt32(v int32) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendInt16(v int16) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendInt8(v int8) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendString(v string) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendTime(v time.Time) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendUint(v uint) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendUint64(v uint64) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendUint32(v uint32) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendUint16(v uint16) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendUint8(v uint8) { s.elems = append(s.elems, v) }
+func (s *sliceArrayEncoder) AppendUintptr(v uintptr) { s.elems = append(s.elems, v) }
diff --git a/vendor/go.uber.org/zap/zapcore/sampler.go b/vendor/go.uber.org/zap/zapcore/sampler.go
new file mode 100644
index 0000000..e316418
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/sampler.go
@@ -0,0 +1,134 @@
+// 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 zapcore
+
+import (
+ "time"
+
+ "go.uber.org/atomic"
+)
+
+const (
+ _numLevels = _maxLevel - _minLevel + 1
+ _countersPerLevel = 4096
+)
+
+type counter struct {
+ resetAt atomic.Int64
+ counter atomic.Uint64
+}
+
+type counters [_numLevels][_countersPerLevel]counter
+
+func newCounters() *counters {
+ return &counters{}
+}
+
+func (cs *counters) get(lvl Level, key string) *counter {
+ i := lvl - _minLevel
+ j := fnv32a(key) % _countersPerLevel
+ return &cs[i][j]
+}
+
+// fnv32a, adapted from "hash/fnv", but without a []byte(string) alloc
+func fnv32a(s string) uint32 {
+ const (
+ offset32 = 2166136261
+ prime32 = 16777619
+ )
+ hash := uint32(offset32)
+ for i := 0; i < len(s); i++ {
+ hash ^= uint32(s[i])
+ hash *= prime32
+ }
+ return hash
+}
+
+func (c *counter) IncCheckReset(t time.Time, tick time.Duration) uint64 {
+ tn := t.UnixNano()
+ resetAfter := c.resetAt.Load()
+ if resetAfter > tn {
+ return c.counter.Inc()
+ }
+
+ c.counter.Store(1)
+
+ newResetAfter := tn + tick.Nanoseconds()
+ if !c.resetAt.CAS(resetAfter, newResetAfter) {
+ // We raced with another goroutine trying to reset, and it also reset
+ // the counter to 1, so we need to reincrement the counter.
+ return c.counter.Inc()
+ }
+
+ return 1
+}
+
+type sampler struct {
+ Core
+
+ counts *counters
+ tick time.Duration
+ first, thereafter uint64
+}
+
+// NewSampler creates a Core that samples incoming entries, which caps the CPU
+// and I/O load of logging while attempting to preserve a representative subset
+// of your logs.
+//
+// Zap samples by logging the first N entries with a given level and message
+// each tick. If more Entries with the same level and message are seen during
+// the same interval, every Mth message is logged and the rest are dropped.
+//
+// Keep in mind that zap's sampling implementation is optimized for speed over
+// absolute precision; under load, each tick may be slightly over- or
+// under-sampled.
+func NewSampler(core Core, tick time.Duration, first, thereafter int) Core {
+ return &sampler{
+ Core: core,
+ tick: tick,
+ counts: newCounters(),
+ first: uint64(first),
+ thereafter: uint64(thereafter),
+ }
+}
+
+func (s *sampler) With(fields []Field) Core {
+ return &sampler{
+ Core: s.Core.With(fields),
+ tick: s.tick,
+ counts: s.counts,
+ first: s.first,
+ thereafter: s.thereafter,
+ }
+}
+
+func (s *sampler) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
+ if !s.Enabled(ent.Level) {
+ return ce
+ }
+
+ counter := s.counts.get(ent.Level, ent.Message)
+ n := counter.IncCheckReset(ent.Time, s.tick)
+ if n > s.first && (n-s.first)%s.thereafter != 0 {
+ return ce
+ }
+ return s.Core.Check(ent, ce)
+}
diff --git a/vendor/go.uber.org/zap/zapcore/tee.go b/vendor/go.uber.org/zap/zapcore/tee.go
new file mode 100644
index 0000000..07a32ee
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/tee.go
@@ -0,0 +1,81 @@
+// 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 zapcore
+
+import "go.uber.org/multierr"
+
+type multiCore []Core
+
+// NewTee creates a Core that duplicates log entries into two or more
+// underlying Cores.
+//
+// Calling it with a single Core returns the input unchanged, and calling
+// it with no input returns a no-op Core.
+func NewTee(cores ...Core) Core {
+ switch len(cores) {
+ case 0:
+ return NewNopCore()
+ case 1:
+ return cores[0]
+ default:
+ return multiCore(cores)
+ }
+}
+
+func (mc multiCore) With(fields []Field) Core {
+ clone := make(multiCore, len(mc))
+ for i := range mc {
+ clone[i] = mc[i].With(fields)
+ }
+ return clone
+}
+
+func (mc multiCore) Enabled(lvl Level) bool {
+ for i := range mc {
+ if mc[i].Enabled(lvl) {
+ return true
+ }
+ }
+ return false
+}
+
+func (mc multiCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
+ for i := range mc {
+ ce = mc[i].Check(ent, ce)
+ }
+ return ce
+}
+
+func (mc multiCore) Write(ent Entry, fields []Field) error {
+ var err error
+ for i := range mc {
+ err = multierr.Append(err, mc[i].Write(ent, fields))
+ }
+ return err
+}
+
+func (mc multiCore) Sync() error {
+ var err error
+ for i := range mc {
+ err = multierr.Append(err, mc[i].Sync())
+ }
+ return err
+}
diff --git a/vendor/go.uber.org/zap/zapcore/write_syncer.go b/vendor/go.uber.org/zap/zapcore/write_syncer.go
new file mode 100644
index 0000000..209e25f
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/write_syncer.go
@@ -0,0 +1,123 @@
+// 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 zapcore
+
+import (
+ "io"
+ "sync"
+
+ "go.uber.org/multierr"
+)
+
+// A WriteSyncer is an io.Writer that can also flush any buffered data. Note
+// that *os.File (and thus, os.Stderr and os.Stdout) implement WriteSyncer.
+type WriteSyncer interface {
+ io.Writer
+ Sync() error
+}
+
+// AddSync converts an io.Writer to a WriteSyncer. It attempts to be
+// intelligent: if the concrete type of the io.Writer implements WriteSyncer,
+// we'll use the existing Sync method. If it doesn't, we'll add a no-op Sync.
+func AddSync(w io.Writer) WriteSyncer {
+ switch w := w.(type) {
+ case WriteSyncer:
+ return w
+ default:
+ return writerWrapper{w}
+ }
+}
+
+type lockedWriteSyncer struct {
+ sync.Mutex
+ ws WriteSyncer
+}
+
+// Lock wraps a WriteSyncer in a mutex to make it safe for concurrent use. In
+// particular, *os.Files must be locked before use.
+func Lock(ws WriteSyncer) WriteSyncer {
+ if _, ok := ws.(*lockedWriteSyncer); ok {
+ // no need to layer on another lock
+ return ws
+ }
+ return &lockedWriteSyncer{ws: ws}
+}
+
+func (s *lockedWriteSyncer) Write(bs []byte) (int, error) {
+ s.Lock()
+ n, err := s.ws.Write(bs)
+ s.Unlock()
+ return n, err
+}
+
+func (s *lockedWriteSyncer) Sync() error {
+ s.Lock()
+ err := s.ws.Sync()
+ s.Unlock()
+ return err
+}
+
+type writerWrapper struct {
+ io.Writer
+}
+
+func (w writerWrapper) Sync() error {
+ return nil
+}
+
+type multiWriteSyncer []WriteSyncer
+
+// NewMultiWriteSyncer creates a WriteSyncer that duplicates its writes
+// and sync calls, much like io.MultiWriter.
+func NewMultiWriteSyncer(ws ...WriteSyncer) WriteSyncer {
+ if len(ws) == 1 {
+ return ws[0]
+ }
+ // Copy to protect against https://github.com/golang/go/issues/7809
+ return multiWriteSyncer(append([]WriteSyncer(nil), ws...))
+}
+
+// See https://golang.org/src/io/multi.go
+// When not all underlying syncers write the same number of bytes,
+// the smallest number is returned even though Write() is called on
+// all of them.
+func (ws multiWriteSyncer) Write(p []byte) (int, error) {
+ var writeErr error
+ nWritten := 0
+ for _, w := range ws {
+ n, err := w.Write(p)
+ writeErr = multierr.Append(writeErr, err)
+ if nWritten == 0 && n != 0 {
+ nWritten = n
+ } else if n < nWritten {
+ nWritten = n
+ }
+ }
+ return nWritten, writeErr
+}
+
+func (ws multiWriteSyncer) Sync() error {
+ var err error
+ for _, w := range ws {
+ err = multierr.Append(err, w.Sync())
+ }
+ return err
+}