diff --git a/Gopkg.lock b/Gopkg.lock
index d9fa6fe05d8..d00d6bdfdfb 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -818,7 +818,7 @@
   version = "v1.1.0"
 
 [[projects]]
-  digest = "1:90a7f94b0c38c53364c997d2d03c442c7b1de6d42e968b220fe8cf51e9af6b52"
+  digest = "1:ee4488b9f3d51381242c4ab4cb1cc8d822f8a89d240c7e79e0f506db0b14acc1"
   name = "go.uber.org/zap"
   packages = [
     ".",
@@ -831,8 +831,8 @@
     "zaptest/observer",
   ]
   pruneopts = "NUT"
-  revision = "27376062155ad36be76b0f12cf1572a221d3a48c"
-  version = "v1.10.0"
+  revision = "2aa9fa25da83bdfff756c36a91442edc9a84576c"
+  version = "v1.14.1"
 
 [[projects]]
   branch = "master"
diff --git a/Gopkg.toml b/Gopkg.toml
index 6f4d3f7078d..4659aa1b71e 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -133,7 +133,7 @@ noverify = [
 
 [[constraint]]
   name = "go.uber.org/zap"
-  version = "1.9.0"
+  version = "1.14"
 
 [[constraint]]
   branch = "master"
diff --git a/vendor/go.uber.org/zap/buffer/buffer.go b/vendor/go.uber.org/zap/buffer/buffer.go
index 7592e8c63f6..3f4b86e081f 100644
--- a/vendor/go.uber.org/zap/buffer/buffer.go
+++ b/vendor/go.uber.org/zap/buffer/buffer.go
@@ -23,7 +23,10 @@
 // package's zero-allocation formatters.
 package buffer // import "go.uber.org/zap/buffer"
 
-import "strconv"
+import (
+	"strconv"
+	"time"
+)
 
 const _size = 1024 // by default, create 1 KiB buffers
 
@@ -49,6 +52,11 @@ func (b *Buffer) AppendInt(i int64) {
 	b.bs = strconv.AppendInt(b.bs, i, 10)
 }
 
+// AppendTime appends the time formatted using the specified layout.
+func (b *Buffer) AppendTime(t time.Time, layout string) {
+	b.bs = t.AppendFormat(b.bs, layout)
+}
+
 // AppendUint appends an unsigned integer to the underlying buffer (assuming
 // base 10).
 func (b *Buffer) AppendUint(i uint64) {
diff --git a/vendor/go.uber.org/zap/config.go b/vendor/go.uber.org/zap/config.go
index 6fe17d9e0f5..eae1d237f8e 100644
--- a/vendor/go.uber.org/zap/config.go
+++ b/vendor/go.uber.org/zap/config.go
@@ -21,6 +21,7 @@
 package zap
 
 import (
+	"fmt"
 	"sort"
 	"time"
 
@@ -174,6 +175,10 @@ func (cfg Config) Build(opts ...Option) (*Logger, error) {
 		return nil, err
 	}
 
+	if cfg.Level == (AtomicLevel{}) {
+		return nil, fmt.Errorf("missing Level")
+	}
+
 	log := New(
 		zapcore.NewCore(enc, sink, cfg.Level),
 		cfg.buildOptions(errSink)...,
diff --git a/vendor/go.uber.org/zap/encoder.go b/vendor/go.uber.org/zap/encoder.go
index 2e9d3c34152..08ed8335436 100644
--- a/vendor/go.uber.org/zap/encoder.go
+++ b/vendor/go.uber.org/zap/encoder.go
@@ -62,6 +62,10 @@ func RegisterEncoder(name string, constructor func(zapcore.EncoderConfig) (zapco
 }
 
 func newEncoder(name string, encoderConfig zapcore.EncoderConfig) (zapcore.Encoder, error) {
+	if encoderConfig.TimeKey != "" && encoderConfig.EncodeTime == nil {
+		return nil, fmt.Errorf("missing EncodeTime in EncoderConfig")
+	}
+
 	_encoderMutex.RLock()
 	defer _encoderMutex.RUnlock()
 	if name == "" {
diff --git a/vendor/go.uber.org/zap/field.go b/vendor/go.uber.org/zap/field.go
index 5130e134771..83c1ea245a2 100644
--- a/vendor/go.uber.org/zap/field.go
+++ b/vendor/go.uber.org/zap/field.go
@@ -38,6 +38,12 @@ func Skip() Field {
 	return Field{Type: zapcore.SkipType}
 }
 
+// nilField returns a field which will marshal explicitly as nil. See motivation
+// in https://github.com/uber-go/zap/issues/753 . If we ever make breaking
+// changes and add zapcore.NilType and zapcore.ObjectEncoder.AddNil, the
+// implementation here should be changed to reflect that.
+func nilField(key string) Field { return Reflect(key, nil) }
+
 // Binary constructs a field that carries an opaque binary blob.
 //
 // Binary data is serialized in an encoding-appropriate format. For example,
@@ -56,6 +62,15 @@ func Bool(key string, val bool) Field {
 	return Field{Key: key, Type: zapcore.BoolType, Integer: ival}
 }
 
+// Boolp constructs a field that carries a *bool. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Boolp(key string, val *bool) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Bool(key, *val)
+}
+
 // ByteString constructs a field that carries UTF-8 encoded text as a []byte.
 // To log opaque binary blobs (which aren't necessarily valid UTF-8), use
 // Binary.
@@ -70,6 +85,15 @@ func Complex128(key string, val complex128) Field {
 	return Field{Key: key, Type: zapcore.Complex128Type, Interface: val}
 }
 
+// Complex128p constructs a field that carries a *complex128. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Complex128p(key string, val *complex128) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Complex128(key, *val)
+}
+
 // Complex64 constructs a field that carries a complex number. Unlike most
 // numeric fields, this costs an allocation (to convert the complex64 to
 // interface{}).
@@ -77,6 +101,15 @@ func Complex64(key string, val complex64) Field {
 	return Field{Key: key, Type: zapcore.Complex64Type, Interface: val}
 }
 
+// Complex64p constructs a field that carries a *complex64. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Complex64p(key string, val *complex64) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Complex64(key, *val)
+}
+
 // Float64 constructs a field that carries a float64. The way the
 // floating-point value is represented is encoder-dependent, so marshaling is
 // necessarily lazy.
@@ -84,6 +117,15 @@ func Float64(key string, val float64) Field {
 	return Field{Key: key, Type: zapcore.Float64Type, Integer: int64(math.Float64bits(val))}
 }
 
+// Float64p constructs a field that carries a *float64. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Float64p(key string, val *float64) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Float64(key, *val)
+}
+
 // Float32 constructs a field that carries a float32. The way the
 // floating-point value is represented is encoder-dependent, so marshaling is
 // necessarily lazy.
@@ -91,66 +133,183 @@ func Float32(key string, val float32) Field {
 	return Field{Key: key, Type: zapcore.Float32Type, Integer: int64(math.Float32bits(val))}
 }
 
+// Float32p constructs a field that carries a *float32. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Float32p(key string, val *float32) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Float32(key, *val)
+}
+
 // Int constructs a field with the given key and value.
 func Int(key string, val int) Field {
 	return Int64(key, int64(val))
 }
 
+// Intp constructs a field that carries a *int. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Intp(key string, val *int) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Int(key, *val)
+}
+
 // Int64 constructs a field with the given key and value.
 func Int64(key string, val int64) Field {
 	return Field{Key: key, Type: zapcore.Int64Type, Integer: val}
 }
 
+// Int64p constructs a field that carries a *int64. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Int64p(key string, val *int64) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Int64(key, *val)
+}
+
 // Int32 constructs a field with the given key and value.
 func Int32(key string, val int32) Field {
 	return Field{Key: key, Type: zapcore.Int32Type, Integer: int64(val)}
 }
 
+// Int32p constructs a field that carries a *int32. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Int32p(key string, val *int32) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Int32(key, *val)
+}
+
 // Int16 constructs a field with the given key and value.
 func Int16(key string, val int16) Field {
 	return Field{Key: key, Type: zapcore.Int16Type, Integer: int64(val)}
 }
 
+// Int16p constructs a field that carries a *int16. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Int16p(key string, val *int16) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Int16(key, *val)
+}
+
 // Int8 constructs a field with the given key and value.
 func Int8(key string, val int8) Field {
 	return Field{Key: key, Type: zapcore.Int8Type, Integer: int64(val)}
 }
 
+// Int8p constructs a field that carries a *int8. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Int8p(key string, val *int8) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Int8(key, *val)
+}
+
 // String constructs a field with the given key and value.
 func String(key string, val string) Field {
 	return Field{Key: key, Type: zapcore.StringType, String: val}
 }
 
+// Stringp constructs a field that carries a *string. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Stringp(key string, val *string) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return String(key, *val)
+}
+
 // Uint constructs a field with the given key and value.
 func Uint(key string, val uint) Field {
 	return Uint64(key, uint64(val))
 }
 
+// Uintp constructs a field that carries a *uint. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Uintp(key string, val *uint) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Uint(key, *val)
+}
+
 // Uint64 constructs a field with the given key and value.
 func Uint64(key string, val uint64) Field {
 	return Field{Key: key, Type: zapcore.Uint64Type, Integer: int64(val)}
 }
 
+// Uint64p constructs a field that carries a *uint64. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Uint64p(key string, val *uint64) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Uint64(key, *val)
+}
+
 // Uint32 constructs a field with the given key and value.
 func Uint32(key string, val uint32) Field {
 	return Field{Key: key, Type: zapcore.Uint32Type, Integer: int64(val)}
 }
 
+// Uint32p constructs a field that carries a *uint32. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Uint32p(key string, val *uint32) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Uint32(key, *val)
+}
+
 // Uint16 constructs a field with the given key and value.
 func Uint16(key string, val uint16) Field {
 	return Field{Key: key, Type: zapcore.Uint16Type, Integer: int64(val)}
 }
 
+// Uint16p constructs a field that carries a *uint16. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Uint16p(key string, val *uint16) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Uint16(key, *val)
+}
+
 // Uint8 constructs a field with the given key and value.
 func Uint8(key string, val uint8) Field {
 	return Field{Key: key, Type: zapcore.Uint8Type, Integer: int64(val)}
 }
 
+// Uint8p constructs a field that carries a *uint8. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Uint8p(key string, val *uint8) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Uint8(key, *val)
+}
+
 // Uintptr constructs a field with the given key and value.
 func Uintptr(key string, val uintptr) Field {
 	return Field{Key: key, Type: zapcore.UintptrType, Integer: int64(val)}
 }
 
+// Uintptrp constructs a field that carries a *uintptr. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Uintptrp(key string, val *uintptr) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Uintptr(key, *val)
+}
+
 // Reflect constructs a field with the given key and an arbitrary object. It uses
 // an encoding-appropriate, reflection-based function to lazily serialize nearly
 // any object into the logging context, but it's relatively slow and
@@ -183,6 +342,15 @@ func Time(key string, val time.Time) Field {
 	return Field{Key: key, Type: zapcore.TimeType, Integer: val.UnixNano(), Interface: val.Location()}
 }
 
+// Timep constructs a field that carries a *time.Time. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Timep(key string, val *time.Time) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Time(key, *val)
+}
+
 // Stack constructs a field that stores a stacktrace of the current goroutine
 // under provided key. Keep in mind that taking a stacktrace is eager and
 // expensive (relatively speaking); this function both makes an allocation and
@@ -201,6 +369,15 @@ func Duration(key string, val time.Duration) Field {
 	return Field{Key: key, Type: zapcore.DurationType, Integer: int64(val)}
 }
 
+// Durationp constructs a field that carries a *time.Duration. The returned Field will safely
+// and explicitly represent `nil` when appropriate.
+func Durationp(key string, val *time.Duration) Field {
+	if val == nil {
+		return nilField(key)
+	}
+	return Duration(key, *val)
+}
+
 // Object constructs a field with the given key and ObjectMarshaler. It
 // provides a flexible, but still type-safe and efficient, way to add map- or
 // struct-like user-defined types to the logging context. The struct's
@@ -224,78 +401,116 @@ func Any(key string, value interface{}) Field {
 		return Array(key, val)
 	case bool:
 		return Bool(key, val)
+	case *bool:
+		return Boolp(key, val)
 	case []bool:
 		return Bools(key, val)
 	case complex128:
 		return Complex128(key, val)
+	case *complex128:
+		return Complex128p(key, val)
 	case []complex128:
 		return Complex128s(key, val)
 	case complex64:
 		return Complex64(key, val)
+	case *complex64:
+		return Complex64p(key, val)
 	case []complex64:
 		return Complex64s(key, val)
 	case float64:
 		return Float64(key, val)
+	case *float64:
+		return Float64p(key, val)
 	case []float64:
 		return Float64s(key, val)
 	case float32:
 		return Float32(key, val)
+	case *float32:
+		return Float32p(key, val)
 	case []float32:
 		return Float32s(key, val)
 	case int:
 		return Int(key, val)
+	case *int:
+		return Intp(key, val)
 	case []int:
 		return Ints(key, val)
 	case int64:
 		return Int64(key, val)
+	case *int64:
+		return Int64p(key, val)
 	case []int64:
 		return Int64s(key, val)
 	case int32:
 		return Int32(key, val)
+	case *int32:
+		return Int32p(key, val)
 	case []int32:
 		return Int32s(key, val)
 	case int16:
 		return Int16(key, val)
+	case *int16:
+		return Int16p(key, val)
 	case []int16:
 		return Int16s(key, val)
 	case int8:
 		return Int8(key, val)
+	case *int8:
+		return Int8p(key, val)
 	case []int8:
 		return Int8s(key, val)
 	case string:
 		return String(key, val)
+	case *string:
+		return Stringp(key, val)
 	case []string:
 		return Strings(key, val)
 	case uint:
 		return Uint(key, val)
+	case *uint:
+		return Uintp(key, val)
 	case []uint:
 		return Uints(key, val)
 	case uint64:
 		return Uint64(key, val)
+	case *uint64:
+		return Uint64p(key, val)
 	case []uint64:
 		return Uint64s(key, val)
 	case uint32:
 		return Uint32(key, val)
+	case *uint32:
+		return Uint32p(key, val)
 	case []uint32:
 		return Uint32s(key, val)
 	case uint16:
 		return Uint16(key, val)
+	case *uint16:
+		return Uint16p(key, val)
 	case []uint16:
 		return Uint16s(key, val)
 	case uint8:
 		return Uint8(key, val)
+	case *uint8:
+		return Uint8p(key, val)
 	case []byte:
 		return Binary(key, val)
 	case uintptr:
 		return Uintptr(key, val)
+	case *uintptr:
+		return Uintptrp(key, val)
 	case []uintptr:
 		return Uintptrs(key, val)
 	case time.Time:
 		return Time(key, val)
+	case *time.Time:
+		return Timep(key, val)
 	case []time.Time:
 		return Times(key, val)
 	case time.Duration:
 		return Duration(key, val)
+	case *time.Duration:
+		return Durationp(key, val)
 	case []time.Duration:
 		return Durations(key, val)
 	case error:
diff --git a/vendor/go.uber.org/zap/logger.go b/vendor/go.uber.org/zap/logger.go
index dc8f6e3a4bd..cd6e19551ad 100644
--- a/vendor/go.uber.org/zap/logger.go
+++ b/vendor/go.uber.org/zap/logger.go
@@ -258,6 +258,12 @@ func (log *Logger) check(lvl zapcore.Level, msg string) *zapcore.CheckedEntry {
 	// (e.g., Check, Info, Fatal).
 	const callerSkipOffset = 2
 
+	// Check the level first to reduce the cost of disabled log calls.
+	// Since Panic and higher may exit, we skip the optimization for those levels.
+	if lvl < zapcore.DPanicLevel && !log.core.Enabled(lvl) {
+		return nil
+	}
+
 	// Create basic checked entry thru the core; this will be non-nil if the
 	// log message will actually be written somewhere.
 	ent := zapcore.Entry{
diff --git a/vendor/go.uber.org/zap/options.go b/vendor/go.uber.org/zap/options.go
index 7a6b0fca1b8..dd3b6b2b2f3 100644
--- a/vendor/go.uber.org/zap/options.go
+++ b/vendor/go.uber.org/zap/options.go
@@ -20,7 +20,11 @@
 
 package zap
 
-import "go.uber.org/zap/zapcore"
+import (
+	"fmt"
+
+	"go.uber.org/zap/zapcore"
+)
 
 // An Option configures a Logger.
 type Option interface {
@@ -107,3 +111,16 @@ func AddStacktrace(lvl zapcore.LevelEnabler) Option {
 		log.addStack = lvl
 	})
 }
+
+// IncreaseLevel increase the level of the logger. It has no effect if
+// the passed in level tries to decrease the level of the logger.
+func IncreaseLevel(lvl zapcore.LevelEnabler) Option {
+	return optionFunc(func(log *Logger) {
+		core, err := zapcore.NewIncreaseLevelCore(log.core, lvl)
+		if err != nil {
+			fmt.Fprintf(log.errorOutput, "failed to IncreaseLevel: %v", err)
+		} else {
+			log.core = core
+		}
+	})
+}
diff --git a/vendor/go.uber.org/zap/zapcore/encoder.go b/vendor/go.uber.org/zap/zapcore/encoder.go
index f0509522b5f..6c78f7e49a9 100644
--- a/vendor/go.uber.org/zap/zapcore/encoder.go
+++ b/vendor/go.uber.org/zap/zapcore/encoder.go
@@ -31,6 +31,9 @@ import (
 // behavior.
 const DefaultLineEnding = "\n"
 
+// OmitKey defines the key to use when callers want to remove a key from log output.
+const OmitKey = ""
+
 // A LevelEncoder serializes a Level to a primitive type.
 type LevelEncoder func(Level, PrimitiveArrayEncoder)
 
@@ -109,17 +112,58 @@ func EpochNanosTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
 	enc.AppendInt64(t.UnixNano())
 }
 
+func encodeTimeLayout(t time.Time, layout string, enc PrimitiveArrayEncoder) {
+	type appendTimeEncoder interface {
+		AppendTimeLayout(time.Time, string)
+	}
+
+	if enc, ok := enc.(appendTimeEncoder); ok {
+		enc.AppendTimeLayout(t, layout)
+		return
+	}
+
+	enc.AppendString(t.Format(layout))
+}
+
 // ISO8601TimeEncoder serializes a time.Time to an ISO8601-formatted string
 // with millisecond precision.
+//
+// If enc supports AppendTimeLayout(t time.Time,layout string), it's used
+// instead of appending a pre-formatted string value.
 func ISO8601TimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
-	enc.AppendString(t.Format("2006-01-02T15:04:05.000Z0700"))
+	encodeTimeLayout(t, "2006-01-02T15:04:05.000Z0700", enc)
 }
 
-// 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.
+// RFC3339TimeEncoder serializes a time.Time to an RFC3339-formatted string.
+//
+// If enc supports AppendTimeLayout(t time.Time,layout string), it's used
+// instead of appending a pre-formatted string value.
+func RFC3339TimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
+	encodeTimeLayout(t, time.RFC3339, enc)
+}
+
+// RFC3339NanoTimeEncoder serializes a time.Time to an RFC3339-formatted string
+// with nanosecond precision.
+//
+// If enc supports AppendTimeLayout(t time.Time,layout string), it's used
+// instead of appending a pre-formatted string value.
+func RFC3339NanoTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
+	encodeTimeLayout(t, time.RFC3339Nano, enc)
+}
+
+// UnmarshalText unmarshals text to a TimeEncoder.
+// "rfc3339nano" and "RFC3339Nano" are unmarshaled to RFC3339NanoTimeEncoder.
+// "rfc3339" and "RFC3339" are unmarshaled to RFC3339TimeEncoder.
+// "iso8601" and "ISO8601" are unmarshaled to ISO8601TimeEncoder.
+// "millis" is unmarshaled to EpochMillisTimeEncoder.
+// "nanos" is unmarshaled to EpochNanosEncoder.
+// Anything else is unmarshaled to EpochTimeEncoder.
 func (e *TimeEncoder) UnmarshalText(text []byte) error {
 	switch string(text) {
+	case "rfc3339nano", "RFC3339Nano":
+		*e = RFC3339NanoTimeEncoder
+	case "rfc3339", "RFC3339":
+		*e = RFC3339TimeEncoder
 	case "iso8601", "ISO8601":
 		*e = ISO8601TimeEncoder
 	case "millis":
@@ -146,6 +190,12 @@ func NanosDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
 	enc.AppendInt64(int64(d))
 }
 
+// MillisDurationEncoder serializes a time.Duration to an integer number of
+// milliseconds elapsed.
+func MillisDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
+	enc.AppendInt64(d.Nanoseconds() / 1e6)
+}
+
 // StringDurationEncoder serializes a time.Duration using its built-in String
 // method.
 func StringDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
@@ -161,6 +211,8 @@ func (e *DurationEncoder) UnmarshalText(text []byte) error {
 		*e = StringDurationEncoder
 	case "nanos":
 		*e = NanosDurationEncoder
+	case "ms":
+		*e = MillisDurationEncoder
 	default:
 		*e = SecondsDurationEncoder
 	}
@@ -272,8 +324,8 @@ type ObjectEncoder interface {
 	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 uses reflection to serialize arbitrary objects, so it can be
+	// 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
@@ -343,6 +395,7 @@ type Encoder interface {
 	Clone() Encoder
 
 	// EncodeEntry encodes an entry and fields, along with any accumulated
-	// context, into a byte buffer and returns it.
+	// context, into a byte buffer and returns it. Any fields that are empty,
+	// including fields on the `Entry` type, should be omitted.
 	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
index 7d9893f3313..8273abdf073 100644
--- a/vendor/go.uber.org/zap/zapcore/entry.go
+++ b/vendor/go.uber.org/zap/zapcore/entry.go
@@ -136,7 +136,8 @@ func (ec EntryCaller) TrimmedPath() string {
 
 // 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.
+// information are available for inspection and modification. Any fields left
+// empty will be omitted when encoding.
 //
 // Entries are pooled, so any functions that accept them MUST be careful not to
 // retain references to them.
diff --git a/vendor/go.uber.org/zap/zapcore/error.go b/vendor/go.uber.org/zap/zapcore/error.go
index a67c7bacc98..9ba2272c3f7 100644
--- a/vendor/go.uber.org/zap/zapcore/error.go
+++ b/vendor/go.uber.org/zap/zapcore/error.go
@@ -66,11 +66,6 @@ type errorGroup interface {
 	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.
diff --git a/vendor/go.uber.org/zap/zapcore/increase_level.go b/vendor/go.uber.org/zap/zapcore/increase_level.go
new file mode 100644
index 00000000000..a42135c159d
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/increase_level.go
@@ -0,0 +1,55 @@
+// Copyright (c) 2020 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"
+
+type levelFilterCore struct {
+	Core
+
+	level LevelEnabler
+}
+
+// NewIncreaseLevelCore creates a core that can be used to increase the level of
+// an existing Core. It cannot be used to decrease the logging level, as it acts
+// as a filter before calling the underlying core. If level decreases the log level,
+// an error is returned.
+func NewIncreaseLevelCore(core Core, level LevelEnabler) (Core, error) {
+	for l := _maxLevel; l >= _minLevel; l-- {
+		if !core.Enabled(l) && level.Enabled(l) {
+			return nil, fmt.Errorf("invalid increase level, as level %q is allowed by increased level, but not by existing core", l)
+		}
+	}
+
+	return &levelFilterCore{core, level}, nil
+}
+
+func (c *levelFilterCore) Enabled(lvl Level) bool {
+	return c.level.Enabled(lvl)
+}
+
+func (c *levelFilterCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
+	if !c.Enabled(ent.Level) {
+		return ce
+	}
+
+	return c.Core.Check(ent, ce)
+}
diff --git a/vendor/go.uber.org/zap/zapcore/json_encoder.go b/vendor/go.uber.org/zap/zapcore/json_encoder.go
index 9aec4eada31..7facc1b36b5 100644
--- a/vendor/go.uber.org/zap/zapcore/json_encoder.go
+++ b/vendor/go.uber.org/zap/zapcore/json_encoder.go
@@ -145,15 +145,29 @@ func (enc *jsonEncoder) resetReflectBuf() {
 	}
 }
 
-func (enc *jsonEncoder) AddReflected(key string, obj interface{}) error {
+var nullLiteralBytes = []byte("null")
+
+// Only invoke the standard JSON encoder if there is actually something to
+// encode; otherwise write JSON null literal directly.
+func (enc *jsonEncoder) encodeReflected(obj interface{}) ([]byte, error) {
+	if obj == nil {
+		return nullLiteralBytes, nil
+	}
 	enc.resetReflectBuf()
-	err := enc.reflectEnc.Encode(obj)
+	if err := enc.reflectEnc.Encode(obj); err != nil {
+		return nil, err
+	}
+	enc.reflectBuf.TrimNewline()
+	return enc.reflectBuf.Bytes(), nil
+}
+
+func (enc *jsonEncoder) AddReflected(key string, obj interface{}) error {
+	valueBytes, err := enc.encodeReflected(obj)
 	if err != nil {
 		return err
 	}
-	enc.reflectBuf.TrimNewline()
 	enc.addKey(key)
-	_, err = enc.buf.Write(enc.reflectBuf.Bytes())
+	_, err = enc.buf.Write(valueBytes)
 	return err
 }
 
@@ -236,14 +250,12 @@ func (enc *jsonEncoder) AppendInt64(val int64) {
 }
 
 func (enc *jsonEncoder) AppendReflected(val interface{}) error {
-	enc.resetReflectBuf()
-	err := enc.reflectEnc.Encode(val)
+	valueBytes, err := enc.encodeReflected(val)
 	if err != nil {
 		return err
 	}
-	enc.reflectBuf.TrimNewline()
 	enc.addElementSeparator()
-	_, err = enc.buf.Write(enc.reflectBuf.Bytes())
+	_, err = enc.buf.Write(valueBytes)
 	return err
 }
 
@@ -254,6 +266,13 @@ func (enc *jsonEncoder) AppendString(val string) {
 	enc.buf.AppendByte('"')
 }
 
+func (enc *jsonEncoder) AppendTimeLayout(time time.Time, layout string) {
+	enc.addElementSeparator()
+	enc.buf.AppendByte('"')
+	enc.buf.AppendTime(time, layout)
+	enc.buf.AppendByte('"')
+}
+
 func (enc *jsonEncoder) AppendTime(val time.Time) {
 	cur := enc.buf.Len()
 	enc.EncodeTime(val, enc)